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2025-12-17 17:03:50 +09:00
commit 4de4d36282
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--- a/.editorconfig
+++ b/.editorconfig
@@ -0,0 +1,7 @@
+[*.cs]
+
+# CS8602: null 가능 참조에 대한 역참조입니다.
+dotnet_diagnostic.CS8602.severity = none
+
+# CS8618: null을 허용하지 않는 필드는 생성자를 종료할 때 null이 아닌 값을 포함해야 합니다. 'required' 한정자를 추가하거나 nullable로 선언하는 것이 좋습니다.
+dotnet_diagnostic.CS8618.severity = none
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,485 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from `dotnet new gitignore`
+
+# dotenv files
+.env
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# Tye
+.tye/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
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+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
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+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
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+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
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+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio 6 auto-generated project file (contains which files were open etc.)
+*.vbp
+
+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
+*.dsw
+*.dsp
+
+# Visual Studio 6 technical files
+*.ncb
+*.aps
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# Visual Studio History (VSHistory) files
+.vshistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
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+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml
+.idea/
+
+##
+## Visual studio for Mac
+##
+
+
+# globs
+Makefile.in
+*.userprefs
+*.usertasks
+config.make
+config.status
+aclocal.m4
+install-sh
+autom4te.cache/
+*.tar.gz
+tarballs/
+test-results/
+
+# Mac bundle stuff
+*.dmg
+*.app
+
+# content below from: https://github.com/github/gitignore/blob/main/Global/macOS.gitignore
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# content below from: https://github.com/github/gitignore/blob/main/Global/Windows.gitignore
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Vim temporary swap files
+*.swp
+*.bkp
--- a/VTSFetcher/App.xaml
+++ b/VTSFetcher/App.xaml
@@ -0,0 +1,8 @@
+<Application x:Class="VTSFetcher.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:VTSFetcher">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
--- a/VTSFetcher/App.xaml.cs
+++ b/VTSFetcher/App.xaml.cs
@@ -0,0 +1,155 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Serilog;
+using Serilog.Formatting.Json;
+using System.IO;
+using System.IO.Pipes;
+using System.Windows;
+using VTSFetcher.Models;
+using VTSFetcher.Repositories;
+using VTSFetcher.Services;
+using VTSFetcher.ViewModels;
+using VTSFetcher.Views;
+
+namespace VTSFetcher;
+
+/// <summary>
+/// Interaction logic for App.xaml
+/// </summary>
+public partial class App : System.Windows.Application
+{
+    private const string MutexName = "VTSFetcher_SingleInstance";
+    private const string PipeName = "VTSFetcher_SingleInstance_Pipe";
+    private Mutex _mutex;
+
+    protected override void OnStartup(StartupEventArgs e)
+    {
+        bool createdNew;
+        _mutex = new Mutex(true, MutexName, out createdNew);
+        if(!createdNew)
+        {
+            // 이미 실행 중이면 파이프를 통해 기존 창 열기 요청
+            using (var client = new NamedPipeClientStream(".", PipeName, PipeDirection.Out))
+            {
+                try
+                {
+                    client.Connect(500); // 0.5초 대기
+                    using (var writer = new StreamWriter(client))
+                    {
+                        writer.WriteLine("SHOW");
+                        writer.Flush();
+                    }
+                }
+                catch
+                {
+                    // 연결 실패 시 무시
+                }
+            }
+
+            Shutdown();
+            return;
+        }
+
+        // Start named pipe server for single instance communication
+        Task.Run(() => StartPipeServer());
+
+        base.OnStartup(e);
+        
+        var config = new ConfigurationBuilder()
+            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+            .Build();
+
+        SetSerilog();
+
+        var services = new ServiceCollection();
+        services.Configure<AppSettings>(config);
+        services.AddSingleton<AnytypeService>();
+        services.AddSingleton<VtsService>();
+        services.AddSingleton<SlackService>();
+        services.AddDbContext<AnytypeVtsContext>();
+        services.AddSingleton<AnytypeVtsRepository>();
+        services.AddTransient<MainViewModel>();
+        services.AddTransient<MainWindow>();
+
+        var provider = services.BuildServiceProvider();
+        try
+        {
+            using (var scope = provider.CreateScope())
+            {
+                var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+                db.Database.EnsureCreated();
+            }
+            var mainWindow = provider.GetRequiredService<MainWindow>();
+            mainWindow.Show();
+        }
+        catch(Exception ex)
+        {
+            Log.Error("Unhandled exception occured during starting application: {error_message}", ex.Message);
+        }
+
+        Log.Information("Application started.");
+    }
+    protected override void OnExit(ExitEventArgs e)
+    {
+        Log.Information("Application ended.");
+
+        Log.CloseAndFlush();
+        base.OnExit(e);
+    }
+    private void StartPipeServer()
+    {
+        while (true)
+        {
+            try
+            {
+                using (var server = new NamedPipeServerStream(PipeName, PipeDirection.In))
+                {
+                    server.WaitForConnection();
+                    using (var reader = new StreamReader(server))
+                    {
+                        string command = reader.ReadLine();
+                        if (command == "SHOW")
+                        {
+                            Dispatcher.Invoke(() =>
+                            {
+                                if (Current.MainWindow != null)
+                                {
+                                    if (Current.MainWindow.WindowState == WindowState.Minimized)
+                                        Current.MainWindow.WindowState = WindowState.Normal;
+
+                                    Current.MainWindow.Show();
+                                    Current.MainWindow.Activate();
+                                    Current.MainWindow.Topmost = true;  // 맨 위로 올림
+                                    Current.MainWindow.Topmost = false; // 다시 원래대로
+                                }
+                            });
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                // 에러 발생 시 루프 재시작
+            }
+        }
+    }
+    private void SetSerilog()
+    {
+        var exePath = AppDomain.CurrentDomain.BaseDirectory;
+        var logDir = Path.Combine(exePath, "logs");
+        if (!Directory.Exists(logDir))
+            Directory.CreateDirectory(logDir);
+
+        Log.Logger = new LoggerConfiguration()
+            .MinimumLevel.Debug()
+            .WriteTo.Console()
+            .WriteTo.File(
+                formatter: new JsonFormatter(renderMessage: true),
+                path: Path.Combine(logDir, "log-.log"),
+                rollingInterval: RollingInterval.Day,
+                retainedFileCountLimit: 30
+            )
+            .WriteTo.Seq("http://localhost:5341")
+            .CreateLogger();
+    }
+}
--- a/VTSFetcher/AssemblyInfo.cs
+++ b/VTSFetcher/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None,            //where theme specific resource dictionaries are located
+                                                //(used if a resource is not found in the page,
+                                                // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly   //where the generic resource dictionary is located
+                                                //(used if a resource is not found in the page,
+                                                // app, or any theme specific resource dictionaries)
+)]
--- a/VTSFetcher/Commands/RelayCommand.cs
+++ b/VTSFetcher/Commands/RelayCommand.cs
@@ -0,0 +1,42 @@
+using System.Windows.Input;
+
+namespace VTSFetcher.Commands;
+
+/// <summary>
+/// MVVM에서 버튼 클릭 등 UI 이벤트를 ViewModel 메서드로 중계하는 ICommand 구현
+/// </summary>
+public class RelayCommand : ICommand
+{
+    private readonly Action<object?> _execute;
+    private readonly Func<object?, bool>? _canExecute;
+
+    /// <summary>
+    /// 생성자
+    /// </summary>
+    /// <param name="execute">실행할 Action</param>
+    /// <param name="canExecute">실행 가능 조건 (선택)</param>
+    public RelayCommand(Action<object?> execute, Func<object?, bool>? canExecute = null)
+    {
+        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+        _canExecute = canExecute;
+    }
+
+    /// <summary>
+    /// 명령 실행 가능 여부
+    /// </summary>
+    public bool CanExecute(object? parameter) => _canExecute?.Invoke(parameter) ?? true;
+
+    /// <summary>
+    /// 명령 실행
+    /// </summary>
+    public void Execute(object? parameter) => _execute(parameter);
+
+    /// <summary>
+    /// CanExecuteChanged 이벤트 (UI 갱신용)
+    /// </summary>
+    public event EventHandler? CanExecuteChanged
+    {
+        add => CommandManager.RequerySuggested += value;
+        remove => CommandManager.RequerySuggested -= value;
+    }
+}
--- a/VTSFetcher/Documents/VtsFetcherWorkflow.drawio
+++ b/VTSFetcher/Documents/VtsFetcherWorkflow.drawio
@@ -0,0 +1,141 @@
+<mxfile host="Electron" agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/28.2.5 Chrome/138.0.7204.251 Electron/37.6.1 Safari/537.36" version="28.2.5">
+  <diagram name="페이지-1" id="QgJmRnvOjF1n6O1NZE9H">
+    <mxGraphModel dx="2235" dy="823" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+      <root>
+        <mxCell id="0" />
+        <mxCell id="1" parent="0" />
+        <mxCell id="B76gYM8LnXhayGnT7YrE-24" value="Anytype" style="shape=cylinder3;whiteSpace=wrap;html=1;boundedLbl=1;backgroundOutline=1;size=15;" parent="1" vertex="1">
+          <mxGeometry x="120" y="1290" width="60" height="80" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-25" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;dashed=1;" parent="1" source="B76gYM8LnXhayGnT7YrE-22" target="B76gYM8LnXhayGnT7YrE-24" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-39" value="VTS" style="shape=cylinder3;whiteSpace=wrap;html=1;boundedLbl=1;backgroundOutline=1;size=15;" parent="1" vertex="1">
+          <mxGeometry x="-330" y="635" width="60" height="80" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-40" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;dashed=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;exitPerimeter=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" parent="1" source="B76gYM8LnXhayGnT7YrE-39" target="B76gYM8LnXhayGnT7YrE-7" edge="1">
+          <mxGeometry relative="1" as="geometry">
+            <mxPoint x="-250" y="840" as="sourcePoint" />
+            <mxPoint x="-250" y="960" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-41" value="VTS Fetcher" style="swimlane;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+          <mxGeometry x="-200" y="460" width="1280" height="780" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-2" value="VTS Service" style="swimlane;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="70" y="80" width="590" height="250" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-11" value="UpsertVtsIssues" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-2" vertex="1">
+          <mxGeometry x="230" y="105" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-3" value="Anytype Service" style="swimlane;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="60" y="550" width="600" height="200" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-23" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;" parent="B76gYM8LnXhayGnT7YrE-3" source="B76gYM8LnXhayGnT7YrE-19" target="B76gYM8LnXhayGnT7YrE-22" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-19" value="GetIssuesToPublish()" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-3" vertex="1">
+          <mxGeometry x="30" y="100" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-27" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" parent="B76gYM8LnXhayGnT7YrE-3" source="B76gYM8LnXhayGnT7YrE-22" target="B76gYM8LnXhayGnT7YrE-26" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-22" value="PublishPageAsync" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-3" vertex="1">
+          <mxGeometry x="230" y="100" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-26" value="UpsertVtsIssues" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-3" vertex="1">
+          <mxGeometry x="433.5" y="100" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-4" value="Slack Service" style="swimlane;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="820" y="550" width="420" height="200" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-38" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" parent="B76gYM8LnXhayGnT7YrE-4" source="B76gYM8LnXhayGnT7YrE-34" target="B76gYM8LnXhayGnT7YrE-37" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-34" value="TryDequeue" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-4" vertex="1">
+          <mxGeometry x="30" y="99" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-37" value="SendSlackMessageAsync" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-4" vertex="1">
+          <mxGeometry x="207" y="99" width="183" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-12" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-7" target="B76gYM8LnXhayGnT7YrE-11" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-7" value="FetchVtsIssues()" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="120" y="185" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-13" value="UpdateLastFetchTime" style="rounded=1;whiteSpace=wrap;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="490" y="185" width="150" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-14" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-11" target="B76gYM8LnXhayGnT7YrE-13" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-15" value="DB" style="shape=cylinder3;whiteSpace=wrap;html=1;boundedLbl=1;backgroundOutline=1;size=15;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="330" y="400" width="60" height="80" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-16" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;dashed=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-11" target="B76gYM8LnXhayGnT7YrE-15" edge="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-18" value="vtsIssues" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="B76gYM8LnXhayGnT7YrE-16" vertex="1" connectable="0">
+          <mxGeometry x="-0.4968" y="-1" relative="1" as="geometry">
+            <mxPoint as="offset" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-17" value="Config.LastFetchTimeKey" style="endArrow=classic;html=1;rounded=0;exitX=0.593;exitY=0.983;exitDx=0;exitDy=0;exitPerimeter=0;dashed=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-13" edge="1">
+          <mxGeometry x="-0.4616" y="17" width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="450" y="370" as="sourcePoint" />
+            <mxPoint x="360" y="400" as="targetPoint" />
+            <mxPoint as="offset" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-20" value="" style="endArrow=classic;html=1;rounded=0;entryX=0.442;entryY=-0.05;entryDx=0;entryDy=0;entryPerimeter=0;exitX=0.4;exitY=1.025;exitDx=0;exitDy=0;exitPerimeter=0;dashed=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-15" target="B76gYM8LnXhayGnT7YrE-19" edge="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="330" y="540" as="sourcePoint" />
+            <mxPoint x="380" y="490" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-21" value="VtsIssues" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="B76gYM8LnXhayGnT7YrE-20" vertex="1" connectable="0">
+          <mxGeometry x="0.4927" y="2" relative="1" as="geometry">
+            <mxPoint as="offset" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-28" value="" style="endArrow=classic;html=1;rounded=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;entryPerimeter=0;exitX=0.563;exitY=0.05;exitDx=0;exitDy=0;exitPerimeter=0;dashed=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-26" target="B76gYM8LnXhayGnT7YrE-15" edge="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="711" y="500" as="sourcePoint" />
+            <mxPoint x="500" y="665" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-29" value="VtsIssues" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="B76gYM8LnXhayGnT7YrE-28" vertex="1" connectable="0">
+          <mxGeometry x="0.4927" y="2" relative="1" as="geometry">
+            <mxPoint x="110" y="95" as="offset" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-30" value="_publishedIssuesQueue" style="shape=cylinder3;whiteSpace=wrap;html=1;boundedLbl=1;backgroundOutline=1;size=15;" parent="B76gYM8LnXhayGnT7YrE-41" vertex="1">
+          <mxGeometry x="570" y="400" width="180" height="80" as="geometry" />
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-31" value="" style="endArrow=classic;html=1;rounded=0;entryX=0.461;entryY=1.025;entryDx=0;entryDy=0;entryPerimeter=0;exitX=0.5;exitY=0;exitDx=0;exitDy=0;dashed=1;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-22" target="B76gYM8LnXhayGnT7YrE-30" edge="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="771" y="693" as="sourcePoint" />
+            <mxPoint x="570" y="520" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-33" value="VtsIssue" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="B76gYM8LnXhayGnT7YrE-31" vertex="1" connectable="0">
+          <mxGeometry x="-0.649" y="-2" relative="1" as="geometry">
+            <mxPoint as="offset" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-35" value="" style="endArrow=classic;html=1;rounded=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;dashed=1;exitPerimeter=0;" parent="B76gYM8LnXhayGnT7YrE-41" source="B76gYM8LnXhayGnT7YrE-30" target="B76gYM8LnXhayGnT7YrE-34" edge="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="720" y="668" as="sourcePoint" />
+            <mxPoint x="1023" y="500" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="B76gYM8LnXhayGnT7YrE-36" value="VtsIssue" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="B76gYM8LnXhayGnT7YrE-35" vertex="1" connectable="0">
+          <mxGeometry x="-0.649" y="-2" relative="1" as="geometry">
+            <mxPoint x="177" y="109" as="offset" />
+          </mxGeometry>
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>
--- a/VTSFetcher/Helpers/Schedule.cs
+++ b/VTSFetcher/Helpers/Schedule.cs
@@ -0,0 +1,16 @@
+namespace VTSFetcher.Helpers;
+
+public static class Schedule
+{
+    public static bool CheckWorkingTime()
+    {
+        var now = DateTime.Now;
+        if (now.DayOfWeek >= DayOfWeek.Monday &&
+            now.DayOfWeek <= DayOfWeek.Friday &&
+            now.Hour >= 8 && now.Hour < 19)
+        {
+            return true;
+        }
+        return false;
+    }
+}
--- a/VTSFetcher/Models/AnytypePage.cs
+++ b/VTSFetcher/Models/AnytypePage.cs
@@ -0,0 +1,29 @@
+using System.Text.Json.Serialization;
+
+namespace VTSFetcher.Modelsl;
+
+public class AnytypePage
+{
+    [JsonPropertyName("name")]
+    public string Name { get; set; } = string.Empty;
+    [JsonPropertyName("type_key")]
+    public string TypeKey { get; } = "page";
+    [JsonPropertyName("template_id")]
+    public string TemplateId { get; set; } = string.Empty;
+    [JsonPropertyName("properties")]
+    public List<PageProperty> Properties { get; set; } = new();
+}
+public class PageProperty
+{
+    [JsonPropertyName("key")]
+    public string Key { get; set; } = string.Empty;
+    [JsonPropertyName("url")]
+    public string Url { get; set; }
+    [JsonPropertyName("select")]
+    public string Select { get; set; }
+    [JsonPropertyName("text")]
+    public string Text { get; set; }
+    [JsonPropertyName("date")]
+    public string Date { get; set; }
+}
+
--- a/VTSFetcher/Models/AnytypePageResponse.cs
+++ b/VTSFetcher/Models/AnytypePageResponse.cs
@@ -0,0 +1,19 @@
+using System.Text.Json.Serialization;
+
+namespace VTSFetcher.Models;
+
+internal class AnytypePageResponse
+{
+    [JsonPropertyName("object")]
+    public AnytypePageObject Object { get; set; }
+}
+
+public class AnytypePageObject
+{
+    [JsonPropertyName("object")]
+    public string ObjectType { get; set; }
+    [JsonPropertyName("id")]
+    public string ObjectId { get; set; }
+    [JsonPropertyName("space_id")]
+    public string SpaceId { get; set; }
+}
--- a/VTSFetcher/Models/AnytypePropertyResponse.cs
+++ b/VTSFetcher/Models/AnytypePropertyResponse.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace VTSFetcher.Models;
+
+public class AnytypePropertyResponse
+{
+    public Property[] data { get; set; }
+    public Pagination pagination { get; set; }
+}
+
+public class Pagination
+{
+    public int total { get; set; }
+    public int offset { get; set; }
+    public int limit { get; set; }
+    public bool has_more { get; set; }
+}
+
+public class Property
+{
+    [JsonPropertyName("object")]
+    public string Object { get; set; }
+    public string Id { get; set; }
+    public string Key { get; set; }
+    public string Name { get; set; }
+    public string Format { get; set; }
+}
--- a/VTSFetcher/Models/AppSettings.cs
+++ b/VTSFetcher/Models/AppSettings.cs
@@ -0,0 +1,53 @@
+namespace VTSFetcher.Models;
+
+public class AppSettings
+{
+    public Logging Logging { get; set; } = new();
+    public VTS VTS { get; set; } = new();
+    public DB DB { get; set; } = new();
+    public Anytype Anytype { get; set; } = new();
+    public Slack Slack { get; set; } = new();
+}
+
+public class Logging
+{
+    public Loglevel LogLevel { get; set; } = new();
+}
+
+public class Loglevel
+{
+    public string Default { get; set; } = string.Empty;
+    public string MicrosoftHostingLifetime { get; set; } = string.Empty;
+}
+
+public class DB
+{
+    public string Database { get; set; } = string.Empty;
+}
+
+public class VTS
+{
+    public string BaseUrl { get; set; } = string.Empty ;
+    public string ApiBaseUrl { get; set; } = string.Empty;
+    public string AccessToken { get; set; } = string.Empty;
+    public List<string> TargetProjects { get; set; } = [];
+    public int FetchInterval { get; set; } = 60;
+    public string SearchFields { get; set; } = string.Empty;
+}
+
+public class Anytype
+{
+    public string ApiBaseUrl { get; set; } = string.Empty;
+    public string Version { get; set; } = string.Empty;
+    public string ApiKey { get; set; } = string.Empty;
+    public string SpaceId { get; set; } = string.Empty;
+    public string TemplateId { get; set; } = string.Empty;
+    public string[] Properties { get; set; } = new string[0];
+}
+
+public class Slack
+{
+    public string ApiBaseUrl { get; set; } = string.Empty;
+    public string BotUserOAuthToken { get; set; } = string.Empty;
+    public string ChannelId { get; set; } = string.Empty;
+}
--- a/VTSFetcher/Models/VtsResponse.cs
+++ b/VTSFetcher/Models/VtsResponse.cs
@@ -0,0 +1,104 @@
+namespace VTSFetcher.Models;
+
+public class VTSResponse
+{
+    public string expand { get; set; }
+    public int startAt { get; set; }
+    public int maxResults { get; set; }
+    public int total { get; set; }
+    public Issue[] issues { get; set; }
+}
+
+public class Issue
+{
+    public string expand { get; set; }
+    public string id { get; set; }
+    public string self { get; set; }
+    public string key { get; set; } // RYXMARUV1-NNNN
+    public Fields fields { get; set; }
+}
+
+public class Fields
+{
+    public string summary { get; set; } // Title
+    public Assignee assignee { get; set; }
+    public Reporter reporter { get; set; }
+    public string updated { get; set; }
+    public Status status { get; set; }
+    public Issuetype issuetype { get; set; }
+    public DateTimeOffset UpdatedAt
+    {
+        get
+        {
+            // "2025-09-03T15:31:51.000+0900" → "2025-09-03T15:31:51.000+09:00"
+            var fixedValue = updated.Insert(updated.Length - 2, ":");
+            return DateTimeOffset.Parse(fixedValue);
+        }
+    }
+    public DateTime? duedate { get; set; }
+    public Issue parent { get; set; }
+    public string customfield_10808 { get; set; } // Epic key
+}
+
+public class Assignee
+{
+    public string self { get; set; }
+    public string name { get; set; }
+    public string key { get; set; }
+    public string emailAddress { get; set; }
+    public Avatarurls avatarUrls { get; set; }
+    public string displayName { get; set; } // Korean name
+    public bool active { get; set; }
+    public string timeZone { get; set; }
+}
+
+public class Reporter
+{
+    public string self { get; set; }
+    public string name { get; set; }
+    public string key { get; set; }
+    public string emailAddress { get; set; }
+    public Avatarurls avatarUrls { get; set; }
+    public string displayName { get; set; } // Korean name
+    public bool active { get; set; }
+    public string timeZone { get; set; }
+}
+
+public class Avatarurls
+{
+    public string _48x48 { get; set; }
+    public string _24x24 { get; set; }
+    public string _16x16 { get; set; }
+    public string _32x32 { get; set; }
+}
+
+public class Status
+{
+    public string self { get; set; }
+    public string description { get; set; }
+    public string iconUrl { get; set; }
+    public string name { get; set; } // Status: Open InProgress ...
+    public string id { get; set; }
+    public Statuscategory statusCategory { get; set; }
+}
+
+public class Statuscategory
+{
+    public string self { get; set; }
+    public int id { get; set; }
+    public string key { get; set; }
+    public string colorName { get; set; }
+    public string name { get; set; }
+}
+
+public class Issuetype
+{
+    public string self { get; set; }
+    public string id { get; set; }
+    public string description { get; set; }
+    public string iconUrl { get; set; }
+    public string name { get; set; } // Type
+    public bool subtask { get; set; }
+    public int avatarId { get; set; }
+}
+
--- a/VTSFetcher/Repositories/AnytpeVtsSqls.cs
+++ b/VTSFetcher/Repositories/AnytpeVtsSqls.cs
@@ -0,0 +1,18 @@
+namespace VTSFetcher.Repositories;
+
+public partial class AnytypeVtsContext
+{
+    public const string UpsertVtsIssues = @"
+        INSERT INTO vtsIssues (Key, Summary, Type, Status, Assignee, Due, Updated, Parent)
+            VALUES ($Key, $Summary, $Type, $Status, $Assignee, $Due, $Updated, $Parent)
+        ON CONFLICT(Id) DO 
+        UPDATE SET
+            Summary = excluded.Summary,
+            Type = excluded.Type,
+            Status = excluded.Status,
+            Assignee = excluded.Assignee,
+            Due = excluded.Due,
+            Updated = excluded.Updated,
+            Parent = excluded.Parent;
+    ";
+}
--- a/VTSFetcher/Repositories/AnytypeVtsContext.cs
+++ b/VTSFetcher/Repositories/AnytypeVtsContext.cs
@@ -0,0 +1,27 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using System.IO;
+using VTSFetcher.Models;
+using VTSFetcher.Repositories.Entities;
+
+namespace VTSFetcher.Repositories;
+
+public partial class AnytypeVtsContext : DbContext
+{
+    private readonly AppSettings _appSettings;
+    public DbSet<VtsIssue> VtsIssues { get;set; }
+    public DbSet<Config> Configs { get; set; }
+    public string DbPath { get; }
+
+    public AnytypeVtsContext(IOptions<AppSettings> options)
+    {
+        _appSettings = options.Value;
+        var folder = Environment.SpecialFolder.LocalApplicationData;
+        var path = Environment.GetFolderPath(folder);
+        DbPath = Path.Join(path, _appSettings.DB.Database);
+    }
+
+    protected override void OnConfiguring(DbContextOptionsBuilder options)
+        => options.UseSqlite($"Data Source={DbPath}");
+}
--- a/VTSFetcher/Repositories/AnytypeVtsRepository.cs
+++ b/VTSFetcher/Repositories/AnytypeVtsRepository.cs
@@ -0,0 +1,82 @@
+using EFCore.BulkExtensions;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using VTSFetcher.Repositories.Entities;
+
+namespace VTSFetcher.Repositories
+{
+    public class AnytypeVtsRepository
+    {
+        private readonly IServiceScopeFactory _scopeFactory;
+        public AnytypeVtsRepository(IServiceScopeFactory scopeFactory)
+        {
+            _scopeFactory = scopeFactory;
+        }
+
+        #region Configs
+        public Dictionary<string, string> GetConfigs()
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+            var result = db.Configs.ToDictionary(c => c.Key, c => c.Value);
+            return result;
+        }
+
+        public void UpdateLastFetchTime(DateTimeOffset dateTimeOffert)
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+            db.Configs
+                .Where(i => i.Key == Config.LastFetchTimeKey)
+                .ExecuteUpdate(s => s
+                    .SetProperty(i => i.Value, dateTimeOffert.ToString("yyyy-MM-ddTHH:mm:sszzz"))
+                );
+            db.SaveChanges();
+        }
+        #endregion Configs
+
+        #region VtsIssues
+        public async Task<VtsIssue?> GetVtsIssueAsync(string key)
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+            var result = await db.VtsIssues.FirstOrDefaultAsync(i => i.Key == key);
+            return result;
+        }
+        public async Task<List<VtsIssue>> GetVtsIssues(List<string> keys)
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+            var result = await db.VtsIssues
+                .Where(i => keys.Contains(i.Key))
+                .ToListAsync();
+            return result;
+        }
+
+        public void UpsertVtsIssues(List<VtsIssue> vtsIssues, List<string> excludedColumns)
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+
+            // BulkInsertOrUpdateAsync does not need SaveChangesAsync
+            db.BulkInsertOrUpdate(vtsIssues, new BulkConfig
+            {
+                PropertiesToExclude = excludedColumns
+            });
+        }
+
+        public List<VtsIssue> GetIssuesToPublish(int count = 1)
+        {
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AnytypeVtsContext>();
+            var result = db.VtsIssues
+                 .AsEnumerable() // DB에서 먼저 가져오고, 이후 LINQ 연산은 메모리에서 수행
+                .Where(p => p.Published < p.Updated)
+                //.OrderBy(p => p.Published)
+                .Take(count)
+                .ToList();
+            return result;
+        }
+        #endregion VtsIsseus
+    }
+}
--- a/VTSFetcher/Repositories/Entities/Config.cs
+++ b/VTSFetcher/Repositories/Entities/Config.cs
@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace VTSFetcher.Repositories.Entities;
+
+
+public class Config
+{
+    public const string LastFetchTimeKey = "LAST_FETCH_TIME";
+
+    [Key]
+    public string Key { get; set; }
+    public string Value { get; set; }
+}
--- a/VTSFetcher/Repositories/Entities/VtsIssue.cs
+++ b/VTSFetcher/Repositories/Entities/VtsIssue.cs
@@ -0,0 +1,20 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace VTSFetcher.Repositories.Entities;
+
+public class VtsIssue
+{
+    [Key]
+    public string Key { get; set; }
+    public string Summary { get; set; }
+    public string? Parent { get; set; }
+    public string Type { get; set; }
+    public string Status { get; set; }
+    public string Assignee { get; set; }
+    public string Manager { get; set; }
+    public DateTimeOffset Due { get; set; }
+    public DateTimeOffset Updated { get; set; }
+    public DateTimeOffset Published { get; set; }
+    public string? ObjectId { get; set; }
+    public int NeedNotify { get; set; }
+}
--- a/VTSFetcher/Services/AnytypeService.cs
+++ b/VTSFetcher/Services/AnytypeService.cs
@@ -0,0 +1,173 @@
+using Microsoft.Extensions.Options;
+using System.Net.Http;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using VTSFetcher.Models;
+using VTSFetcher.Modelsl;
+using VTSFetcher.Repositories.Entities;
+
+namespace VTSFetcher.Services;
+
+public class AnytypeService
+{
+    // Managed Property names
+    const string VtsKeyPropertyName = "VTS_Key";
+    const string VtsLinkPropertyName = "VTS_Link";
+    const string VtsTypePropertyName = "VTS_Type";
+    const string VtsStatusPropertyName = "VTS_Status";
+    const string VtsAssigneePropertyName = "VTS_Assignee";
+    const string VtsManagerPropertyName = "VTS_Manager";
+    const string VtsDueDatePropertyName = "VTS_Due";
+
+    private readonly AppSettings _appSettings;
+
+    private Dictionary<string, Property> _managedProperties = new();
+    private Dictionary<string, Property[]> _managedTags = new();
+
+    public AnytypeService(IOptions<AppSettings> options)
+    {
+        _appSettings = options.Value;
+
+        LoadProperties().Wait();
+    }
+
+    public async Task<VtsIssue> PublishPageAsync(VtsIssue issue)
+    {
+        List<PageProperty> pageProperties = new();
+        foreach (var propertyName in _managedProperties.Keys)
+        {
+            var property = _managedProperties[propertyName];
+            var pageProperty = GetPageProperty(property, issue);
+            if(pageProperty != null)
+                pageProperties.Add(pageProperty);
+        }
+        var page = new AnytypePage
+        {
+            Name = $"{issue.Key} {issue.Summary}",
+            TemplateId = _appSettings.Anytype.TemplateId,
+            Properties = pageProperties,
+        };
+        var options = new JsonSerializerOptions
+        {
+            DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+            PropertyNameCaseInsensitive = true
+        };
+        var jsingString = JsonSerializer.Serialize(page, options);
+        var content = new StringContent(jsingString);
+
+        using var client = new HttpClient();
+        HttpRequestMessage request;
+        if (string.IsNullOrEmpty(issue.ObjectId))
+            request = new HttpRequestMessage(
+                HttpMethod.Post,
+                $"{_appSettings.Anytype.ApiBaseUrl}/spaces/{_appSettings.Anytype.SpaceId}/objects"
+            );
+        else
+            request = new HttpRequestMessage(
+                HttpMethod.Patch,
+                $"{_appSettings.Anytype.ApiBaseUrl}/spaces/{_appSettings.Anytype.SpaceId}/objects/{issue.ObjectId}"
+            );
+        request.Headers.Add("Authorization", $"Bearer {_appSettings.Anytype.ApiKey}");
+        request.Headers.Add("Anytype-Version", $"{_appSettings.Anytype.Version}");
+        request.Content = content;
+        var response = await client.SendAsync(request).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+        var jsonResponse = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
+        var pageResponse = JsonSerializer.Deserialize<AnytypePageResponse>(jsonResponse, options);
+        issue.ObjectId = pageResponse.Object.ObjectId;
+        issue.Published = DateTimeOffset.Now;
+        return issue;
+    }
+    private async Task LoadProperties()
+    {
+        using var client = new HttpClient();
+        var uri = $"{_appSettings.Anytype.ApiBaseUrl}/spaces/{_appSettings.Anytype.SpaceId}/properties";
+        var request = new HttpRequestMessage(HttpMethod.Get, uri);
+        request.Headers.Add("Accept", "application/json");
+        request.Headers.Add("Authorization", $"Bearer {_appSettings.Anytype.ApiKey}");
+        request.Headers.Add("Anytype-Version", $"{_appSettings.Anytype.Version}");
+
+        var response = await client.SendAsync(request).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+
+        var jsonResponse = await response.Content.ReadAsStringAsync();
+        var jsonSerializerOptions = new JsonSerializerOptions { PropertyNameCaseInsensitive = true };
+        var anytypePropertyResponse = JsonSerializer.Deserialize<AnytypePropertyResponse>(jsonResponse, jsonSerializerOptions);
+
+        var managedPropertyNameSet = new HashSet<string>(_appSettings.Anytype.Properties, StringComparer.OrdinalIgnoreCase);
+        var matchedProperties = anytypePropertyResponse.data
+            .Where(d => managedPropertyNameSet.Contains(d.Name)).ToList();
+        foreach (var item in matchedProperties)
+        {
+            _managedProperties.Add(item.Name, item);
+            if (!string.Equals(item.Format, "select", StringComparison.OrdinalIgnoreCase))
+                continue;
+            var tags = await LoadTags(item.Id);
+            _managedTags.Add(item.Name, tags);
+        }
+    }
+
+    private async Task<Property[]> LoadTags(string propertyId)
+    {
+        using var client = new HttpClient();
+        var uri = $"{_appSettings.Anytype.ApiBaseUrl}"
+            + $"/spaces/{_appSettings.Anytype.SpaceId}"
+            + $"/properties/{propertyId}/tags";
+        var request = new HttpRequestMessage(HttpMethod.Get, uri);
+        request.Headers.Add("Accept", "application/json");
+        request.Headers.Add("Authorization", $"Bearer {_appSettings.Anytype.ApiKey}");
+        request.Headers.Add("Anytype-Version", $"{_appSettings.Anytype.Version}");
+
+        var response = await client.SendAsync(request);
+        response.EnsureSuccessStatusCode();
+
+        var jsonResponse = await response.Content.ReadAsStringAsync();
+        var jsonSerializerOptions = new JsonSerializerOptions { PropertyNameCaseInsensitive = true };
+        var anytypeTagsesponse = JsonSerializer.Deserialize<AnytypePropertyResponse>(jsonResponse, jsonSerializerOptions);
+
+        var result = anytypeTagsesponse.data;
+        return result;
+    }
+
+    private PageProperty? GetPageProperty(Property property, VtsIssue issue)
+    {
+        var pageProperty = new PageProperty();
+        pageProperty.Key = property.Key;
+        switch (property.Name)
+        {
+            case VtsKeyPropertyName:
+                pageProperty.Text = issue.Key;
+                break;
+            case VtsLinkPropertyName:
+                pageProperty.Url = $"{_appSettings.VTS.BaseUrl}/browse/{issue.Key}";
+                break;
+            case VtsTypePropertyName:
+                pageProperty.Select = GetTagId(property, issue.Type);
+                break;
+            case VtsStatusPropertyName:
+                pageProperty.Select = GetTagId(property, issue.Status);
+                break;
+            case VtsAssigneePropertyName:
+                pageProperty.Text = $"{issue.Assignee}";
+                break;
+            case VtsManagerPropertyName:
+                pageProperty.Text = $"{issue.Manager}";
+                break;
+            case VtsDueDatePropertyName:
+                if (issue.Due < new DateTime(2000, 1, 1, 0, 0, 0))
+                    return null;
+                pageProperty.Date = $"{issue.Due.ToString("yyyy-MM-ddT23:59:59Z")}";
+                break;
+            default:
+                break;
+        }
+        return pageProperty;
+    }
+
+    private string GetTagId(Property property, string tagName)
+    {
+        var tags = _managedTags[property.Name];
+        var tag = tags.Where<Property>(t => t.Name == tagName).FirstOrDefault();
+       return tag.Id;
+    }
+}
--- a/VTSFetcher/Services/SlackService.cs
+++ b/VTSFetcher/Services/SlackService.cs
@@ -0,0 +1,86 @@
+using Microsoft.Extensions.Options;
+using Serilog;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Text.Json;
+using VTSFetcher.Models;
+using VTSFetcher.Repositories.Entities;
+
+namespace VTSFetcher.Services
+{
+    public class SlackService
+    {
+        private readonly AppSettings _appSettings;
+        public SlackService(IOptions<AppSettings> options)
+        {
+            _appSettings = options.Value;
+        }
+
+        public async Task SendSlackMessageAsync(List<VtsIssue> issues)
+        {
+            using var client = new HttpClient();
+
+            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _appSettings.Slack.BotUserOAuthToken);
+
+            var payload = CreateMessagePayload(issues);
+            try
+            {
+                var content = new StringContent(payload, Encoding.UTF8, "application/json");
+                var response = await client.PostAsync(_appSettings.Slack.ApiBaseUrl, content);
+                var result = response.EnsureSuccessStatusCode();
+            }
+            catch(Exception ex)
+            {
+                Log.Error("Failed to send message to slack. {error_message}", ex.Message);
+            }
+            finally
+            {
+            }
+        }
+
+        private string CreateMessagePayload(List<VtsIssue> issues)
+        {
+            var payload = @$"{{ ""channel"":""{ _appSettings.Slack.ChannelId }"", ";
+            payload += @" ""blocks"": 
+            [
+		        {
+			        ""type"": ""section"",
+			        ""text"": {
+				        ""type"": ""mrkdwn"",
+				        ""text"": ""@channel""
+			        }
+		        },
+		        {
+			        ""type"": ""divider""
+		        },";
+            foreach(var issue in issues)
+            {
+                payload += $@"
+                {{
+			        ""type"": ""section"",
+			        ""text"": {{
+				        ""type"": ""mrkdwn"",
+				        ""text"": "" *[{issue.Key}]*\n *<{_appSettings.VTS.BaseUrl}/browse/{issue.Key}|{issue.Summary}>*""
+			        }},
+			        ""fields"": [
+				        {{
+					        ""type"": ""mrkdwn"",
+					        ""text"": ""*Type:* `{issue.Type}`""
+				        }},
+				        {{
+					        ""type"": ""mrkdwn"",
+					        ""text"": ""*Status:* `{issue.Status}`""
+				        }}
+			        ]
+		        }},
+		        {{
+			        ""type"": ""divider""
+		        }},
+                ";
+            }
+            payload += "]}";
+            return payload;
+        }
+    }
+}
--- a/VTSFetcher/Services/VtsService.cs
+++ b/VTSFetcher/Services/VtsService.cs
@@ -0,0 +1,82 @@
+using Microsoft.Extensions.Options;
+using Serilog;
+using System.Net.Http;
+using System.Text.Json;
+using VTSFetcher.Models;
+using VTSFetcher.Repositories.Entities;
+
+namespace VTSFetcher.Services;
+
+public class VtsService
+{
+    private readonly AppSettings _appSettings;
+
+    public VtsService(IOptions<AppSettings> options)
+    {
+        _appSettings = options.Value;
+    }
+
+    public async Task<VTSResponse> FetchVtsIssues(DateTimeOffset lastFetchTime, string targetProject,
+        int startAt, CancellationToken ct)
+    {
+        var uri = $"{_appSettings.VTS.ApiBaseUrl}/"
+            + $"search?jql=project={targetProject} "
+            + $"AND updated >= \"{lastFetchTime.ToString("yyyy-MM-dd HH:mm")}\" "
+            + $"&fields={_appSettings.VTS.SearchFields}"
+            + $"&startAt={startAt}&maxResults=50";
+        var request = new HttpRequestMessage(HttpMethod.Get, uri);
+        request.Headers.Add("Accept", "application/json");
+        request.Headers.Add("Authorization", $"Bearer {_appSettings.VTS.AccessToken}");
+        Log.Debug("Fetch VTS issues ready. Fetch the issues updated after {last_fetch_time} in Project {target_project}.",
+            lastFetchTime.ToString("yyyy-MM-dd HH:mm"), targetProject);
+
+        using var client = new HttpClient();
+        var response = await client.SendAsync(request, ct).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+
+        var jsonResponse = await response.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+        var vtsResponse = JsonSerializer.Deserialize<VTSResponse>(jsonResponse);
+        return vtsResponse;
+    }
+
+    public async Task<Issue> FetchVtsIssueAsync(string targetIssueKey, CancellationToken ct)
+    {
+        var uri = $"{_appSettings.VTS.ApiBaseUrl}/issue/{targetIssueKey}";
+        var request = new HttpRequestMessage(HttpMethod.Get, uri);
+        request.Headers.Add("Accept", "application/json");
+        request.Headers.Add("Authorization", $"Bearer {_appSettings.VTS.AccessToken}");
+        Log.Debug("Fetch a VTS issue({issue_key}) ready.", targetIssueKey);
+
+        using var client = new HttpClient();
+        var response = await client.SendAsync(request, ct).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+
+        var jsonResponse = await response.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+        var issue = JsonSerializer.Deserialize<Issue>(jsonResponse);
+        return issue;
+    }
+
+    private List<VtsIssue> JsonDeserializeToVtsIssues(string json)
+    {
+        var result = new List<VtsIssue>();
+        var jsonSerializerOptions = new JsonSerializerOptions { PropertyNameCaseInsensitive = true };
+        var vtsResponse = JsonSerializer.Deserialize<VTSResponse>(json, jsonSerializerOptions);
+        if (vtsResponse?.issues.Length > 0)
+        {
+            result = [.. vtsResponse.issues.Select(i => new VtsIssue
+            {
+                Key = i.key,
+                Summary = i.fields.summary,
+                Type = i.fields.issuetype.name,
+                Status = i.fields.status.name,
+                Assignee = i.fields.assignee.displayName,
+                Manager = i.fields.reporter.displayName,
+                Due = i.fields.duedate ?? new DateTime(1999, 12, 23, 23, 59, 59),
+                Updated = i.fields.UpdatedAt,
+                Parent = i.fields.parent?.key,
+            })];
+        }
+
+        return result;
+    }
+}
--- a/VTSFetcher/VTSFetcher.csproj
+++ b/VTSFetcher/VTSFetcher.csproj
@@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net9.0-windows</TargetFramework>
+        <Nullable>enable</Nullable>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <UseWPF>true</UseWPF>
+        <UseWindowsForms>true</UseWindowsForms>
+        <AssemblyVersion>1.0.0.1</AssemblyVersion>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <Folder Include="Models\" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="EFCore.BulkExtensions" Version="9.0.1" />
+      <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.8" />
+      <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.8" />
+      <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="9.0.9" />
+      <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.8" />
+      <PackageReference Include="Serilog" Version="4.3.0" />
+      <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.2" />
+      <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
+      <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
+      <PackageReference Include="Serilog.Sinks.Seq" Version="9.0.0" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <None Update="appsettings.json">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
+    </ItemGroup>
+
+</Project>
--- a/VTSFetcher/ViewModels/MainViewModel.cs
+++ b/VTSFetcher/ViewModels/MainViewModel.cs
@@ -0,0 +1,373 @@
+using Microsoft.Extensions.Options;
+using Serilog;
+using System.Collections.Concurrent;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Runtime.Intrinsics.X86;
+using System.Windows.Input;
+using System.Windows.Threading;
+using VTSFetcher.Commands;
+using VTSFetcher.Models;
+using VTSFetcher.Repositories;
+using VTSFetcher.Repositories.Entities;
+using VTSFetcher.Services;
+
+namespace VTSFetcher.ViewModels;
+
+public class MainViewModel : INotifyPropertyChanged
+{
+    #region Fields
+    const string MyName = "오승묵";
+    const string StatusReopen = "Reopened";
+    private readonly Stopwatch _sw = new();
+    private readonly AppSettings _appSettings;
+    private readonly AnytypeVtsRepository _repo;
+    private readonly VtsService _vts;
+    private readonly AnytypeService _anytype;
+    private readonly SlackService _slack;
+    private readonly Dictionary<string, string> _configs;
+    private readonly DispatcherTimer _fetchTimer;
+    private readonly DispatcherTimer _publishTimer;
+    private readonly DispatcherTimer _slackTimer;
+    private readonly CancellationTokenSource _cts;
+    private ConcurrentQueue<VtsIssue> _publishedIssuesQueue;
+
+    private DateTimeOffset _lastFetchTimeOffset;
+    private string _lastFetchTime;
+    public string LastFetchTime
+    {
+        get => _lastFetchTime;
+        set
+        {
+            if (_lastFetchTime != value)
+            {
+                _lastFetchTime = value;
+                OnPropertyChanged(nameof(LastFetchTime));
+            }
+        }
+    }
+
+    private int _nextFetchInSeconds; // Seconds
+    private string _nextFetchIn; // "M:SS" format
+    public string NextFetchIn
+    {
+        get => _nextFetchIn;
+        set
+        {
+            if (_nextFetchIn != value)
+            {
+                _nextFetchIn = value;
+                OnPropertyChanged(nameof(NextFetchIn));
+            }
+        }
+    }
+
+    private string _targetIssueKey;
+    public string TargetIssueKey
+    {
+        get => _targetIssueKey;
+        set
+        {
+            if (_targetIssueKey != value)
+            {
+                _targetIssueKey = value;
+                OnPropertyChanged(nameof(TargetIssueKey));
+            }
+        }
+    }
+
+    private bool _isWorking = true;
+    public ICommand FetchNowCommand { get; }
+    #endregion Fields
+
+    public MainViewModel(IOptions<AppSettings> options, AnytypeVtsRepository repo,
+        VtsService vtsService, AnytypeService anytypeService, SlackService slack)
+    {
+        _appSettings = options.Value;
+        _repo = repo;
+        _vts = vtsService;
+        _anytype = anytypeService;
+        _slack = slack;
+        _configs = _repo.GetConfigs();
+
+        _lastFetchTimeOffset = DateTimeOffset.Parse(_configs[Config.LastFetchTimeKey]);
+
+        _nextFetchInSeconds = 5; // Initial fetch after 5 seconds
+        UpdateLabels();
+
+        _fetchTimer = new DispatcherTimer();
+        _fetchTimer.Interval = TimeSpan.FromSeconds(1);
+        _fetchTimer.Tick += FetchTimerTick;
+        _fetchTimer.Start();
+
+        _publishTimer = new DispatcherTimer();
+        _publishTimer.Interval = TimeSpan.FromSeconds(1);
+        _publishTimer.Tick += PublishTimerTick;
+        _publishTimer.Start();
+
+        _slackTimer = new DispatcherTimer();
+        _slackTimer.Interval = TimeSpan.FromSeconds(30);
+        _slackTimer.Tick += SlackTick;
+        _slackTimer.Start();
+
+        FetchNowCommand = new RelayCommand(_ => FetchNow());
+
+        _cts = new CancellationTokenSource();
+        _publishedIssuesQueue = new();
+    }
+
+    #region FetchEvents
+    private void FetchTimerTick(object? sender, EventArgs e)
+    {
+        var isScheduled = CheckSchedule();
+        if (_isWorking && !isScheduled)
+        {
+            _isWorking = false;
+            _nextFetchInSeconds = 1;
+            Log.Information("Stop working by schedue.");
+        }
+        else if (!_isWorking && isScheduled)
+        {
+            _isWorking = true;
+            _nextFetchInSeconds = 1;
+            Log.Information("Start working by schedue.");
+        }
+        else if(!_isWorking && !isScheduled)
+        {
+            return;
+        }
+
+        _nextFetchInSeconds--;
+        if (_nextFetchInSeconds <= 0)
+        {
+            Log.Information("Start fetching by timer...");
+            if(FetchVtsIssues())
+            {
+                _nextFetchInSeconds = _appSettings.VTS.FetchInterval;
+            }
+        }
+
+        UpdateLabels();
+    }
+    private bool CheckSchedule()
+    {
+        DateTime now = DateTime.Now;
+        bool isWeekday = now.DayOfWeek >= DayOfWeek.Monday && now.DayOfWeek <= DayOfWeek.Friday;
+        TimeSpan start = new TimeSpan(8, 00, 0); // 08:00:00
+        TimeSpan end = new TimeSpan(19, 00, 0); // 19:00:00
+        bool isWorkingHours = now.TimeOfDay >= start && now.TimeOfDay <= end;
+        return isWeekday && isWorkingHours;
+    }
+    /// <summary>
+    /// Fetch VTS issues and update Anytype pages.
+    /// LastFetchTime is updated inside this method.
+    /// </summary>
+    /// <returns></returns>
+    private bool FetchVtsIssues()
+    {
+        var now = DateTimeOffset.Now;
+        foreach(var project in _appSettings.VTS.TargetProjects)
+        {
+            try
+            {
+                List<VtsIssue> issues = [];
+                _sw.Restart();
+                var vtsResponses = new List<VTSResponse>();
+                VTSResponse vtsResponse;
+                vtsResponse = _vts.FetchVtsIssues(_lastFetchTimeOffset, project, 0, _cts.Token).GetAwaiter().GetResult();
+                vtsResponses.Add(vtsResponse);
+                var startAt = vtsResponse?.maxResults ?? 0 ;
+                var total = vtsResponse?.total ?? 0;
+                while(startAt < total)
+                {
+                    vtsResponse = _vts.FetchVtsIssues(_lastFetchTimeOffset, project, startAt, _cts.Token).GetAwaiter().GetResult();
+                    vtsResponses.Add(vtsResponse);
+                    startAt += vtsResponse?.maxResults ?? 50;
+                }
+                issues = vtsResponses.SelectMany(r => r.issues.Select(i => new VtsIssue
+                {
+                    Key = i.key,
+                    Summary = i.fields.summary,
+                    Type = i.fields.issuetype.name,
+                    Status = i.fields.status.name,
+                    Assignee = i.fields.assignee?.displayName ?? "",
+                    Manager = i.fields.reporter?.displayName ?? "",
+                    Due = i.fields.duedate ?? new DateTime(1999, 12, 23, 23, 59, 59),
+                    Updated = i.fields.UpdatedAt,
+                    Parent = i.fields.parent?.key,
+                })).ToList();
+                _sw.Stop();
+                Log.Information("Fetched {issue_count} issues from VTS in {operation_time}ms"
+                    , issues.Count, _sw.ElapsedMilliseconds);
+                foreach(var i in issues)
+                {
+                    i.NeedNotify = (IsNeedNotify(i)) ? 1 : 0;
+                    Log.Debug("{issue_key}: {issue_summary} Updated at {issue_updated}", i.Key, i.Summary, i.Updated);
+                }
+
+                _repo.UpsertVtsIssues(issues, ["Published", "ObjectId"]);
+                _repo.UpdateLastFetchTime(now); // Update the timer after fetch
+
+                _lastFetchTimeOffset = now;
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Unhandled exception occured during fetching VTS issues: {error_message}", ex.Message);
+                return false;
+            }
+        }
+        return true;
+    }
+    private bool FetchVtsIssue(string targetIssueKey)
+    {
+        try
+        {
+            _sw.Restart();
+            var response = _vts.FetchVtsIssueAsync(targetIssueKey, _cts.Token).GetAwaiter().GetResult();
+            var issue = new VtsIssue
+            {
+                Key = response.key,
+                Summary = response.fields.summary,
+                Type = response.fields.issuetype.name,
+                Status = response.fields.status.name,
+                Assignee = response.fields.assignee?.displayName ?? "",
+                Manager = response.fields.reporter?.displayName ?? "",
+                Due = response.fields.duedate ?? new DateTime(1999, 12, 23, 23, 59, 59),
+                Updated = response.fields.UpdatedAt,
+                Parent = response.fields.parent?.key,
+            };
+            issue.NeedNotify = (IsNeedNotify(issue)) ? 1 : 0;
+            _repo.UpsertVtsIssues(new List<VtsIssue> { issue }, ["Published", "ObjectId"]);
+        }
+        catch (Exception ex)
+        {
+            Log.Error("Unhandled exception occured during fetching VTS issue({issue_key}): {error_message}", targetIssueKey, ex.Message);
+            return false;
+        }
+        finally
+        {
+            _sw.Stop();
+            Log.Information("Fetched an issue({issue_key}) from VTS in {operation_time}ms"
+               , targetIssueKey, _sw.ElapsedMilliseconds);
+        }
+        return true;
+    }
+    private void FetchNow()
+    {
+        Log.Information("Start fetching by the button...");
+        if(!string.IsNullOrEmpty(_targetIssueKey))
+        {
+            var result = FetchVtsIssue(_targetIssueKey);
+            if (result)
+                TargetIssueKey = "";
+            return;
+        }
+        if (FetchVtsIssues())
+        {
+            _lastFetchTime = DateTimeOffset.Now.ToString();
+            _nextFetchInSeconds = _nextFetchInSeconds = _appSettings.VTS.FetchInterval;
+            UpdateLabels();
+        }
+    }
+    #endregion FetchEvents
+
+    #region PublishEvents
+    private void PublishTimerTick(object? sender, EventArgs e)
+    {
+        var issues = _repo.GetIssuesToPublish();
+        var issueKeys = issues.Select(i => i.Key).ToList();
+        var existingIssues = _repo.GetVtsIssues(issueKeys).GetAwaiter().GetResult();
+        var newIssues = issues.Where(i => !existingIssues.Any(e => e.Key == i.Key)).ToList();
+        issues = newIssues.Concat(existingIssues).ToList();
+        _sw.Restart();
+        foreach (var issue in issues)
+        {
+            try
+            {
+                var existingIssue = existingIssues.Where(i => issue.Key == i.Key).FirstOrDefault();
+                var publishedIssue = _anytype.PublishPageAsync(issue).GetAwaiter().GetResult();
+                _repo.UpsertVtsIssues(new List<VtsIssue> { publishedIssue }, []); // Since it will be performed one by one anyway, we will proceed with Upsert right here.
+                Log.Debug("Issue {issue_key} is {publishd_or_updated} to the page({page_link})",
+                    publishedIssue.Key, (string.IsNullOrEmpty(existingIssue.ObjectId)) ? "published" : "updated",
+                    $"https://object.any.coop/{publishedIssue.ObjectId}?spaceId={_appSettings.Anytype.SpaceId}");
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Unhandled exception occured during publishing Anytype page({issue_key}): {error_message}",
+                    issue.Key, ex.Message);
+            }
+        }
+        _sw.Stop();
+    }
+    #endregion PublishEvents
+
+    #region SlackEvents
+    private bool IsNeedNotify(VtsIssue issue)
+    {
+        var orgIssue = _repo.GetVtsIssueAsync(issue.Key).GetAwaiter().GetResult();
+        if (orgIssue == null) // A new issue assigned to me.
+        {
+            Log.Debug("{method_name} - A new issue({target_keys}) assigned to me.", nameof(IsNeedNotify), issue.Key, issue.Assignee);
+            if (issue.Assignee == MyName)
+            {
+                _publishedIssuesQueue.Enqueue(issue);
+                return true;
+            }
+        }
+        else
+        {
+            if (orgIssue.Assignee != MyName && issue.Assignee == MyName)
+            {
+                Log.Debug("{method_name} - Existing issue({target_key}) assigned to me.", nameof(IsNeedNotify), issue.Key);
+                _publishedIssuesQueue.Enqueue(issue);
+                return true;
+            }
+            else if(orgIssue.Status != StatusReopen && issue.Status == StatusReopen)
+            {
+                Log.Debug("{method_name} - My issue({target_key}) has been reopened.", nameof(IsNeedNotify), issue.Key);
+                _publishedIssuesQueue.Enqueue(issue);
+                return true;
+            }
+        }
+        return false;
+    }
+    private void SlackTick(object? sender, EventArgs e)
+    {
+        var updatedIssues = new List<VtsIssue>();
+        VtsIssue issue;
+        while(_publishedIssuesQueue.TryDequeue(out issue))
+        {
+            if (issue == null) break;
+            Log.Debug("{method_name} - Get published issue {issue_key}", nameof(SlackTick), issue);
+            updatedIssues.Add(issue);
+        }
+        if (updatedIssues.Count < 1) return;
+
+        _slack.SendSlackMessageAsync(updatedIssues);
+    }
+    #endregion SlackEvents
+
+    #region UIEvents
+    private void UpdateLabels()
+    {
+        UpdateNextFetchLabel();
+        UpdateLastFetchTimeLabel();
+    }
+    private void UpdateNextFetchLabel()
+    {
+        int minutes = _nextFetchInSeconds / 60;
+        int seconds = _nextFetchInSeconds % 60;
+        NextFetchIn = $"{minutes}:{seconds:D2}";
+    }
+    private void UpdateLastFetchTimeLabel()
+    {
+        LastFetchTime = _lastFetchTimeOffset.ToString("MM'/'dd HH:mm");
+    }
+    #endregion UIEvents
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+    protected void OnPropertyChanged(string propertyName) 
+        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+}
--- a/VTSFetcher/Views/MainWindow.xaml
+++ b/VTSFetcher/Views/MainWindow.xaml
@@ -0,0 +1,27 @@
+<Window x:Class="VTSFetcher.Views.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:VTSFetcher"
+        xmlns:vm="clr-namespace:VTSFetcher.ViewModels"
+        mc:Ignorable="d"
+        Title="VTS Fetcher" Height="150" Width="300" ResizeMode="NoResize">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="150"/>
+            <ColumnDefinition Width="150"/>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+        <Label Content="Last Fetch Time: " FontSize="16" FontWeight="Bold" HorizontalAlignment="Right" VerticalAlignment="Center"  Grid.Row="0" Grid.Column="0"/>
+        <Label Content="{Binding LastFetchTime}" FontSize="16" HorizontalAlignment="Left" VerticalAlignment="Center" Grid.Row="0" Grid.Column="1"/>
+        <Label Content="Update remains: " FontSize="16" FontWeight="Bold" HorizontalAlignment="Right" VerticalAlignment="Center" Grid.Row="1" Grid.Column="0"/>
+        <Label Content="{Binding NextFetchIn}" FontSize="16" HorizontalAlignment="Left" VerticalAlignment="Center" Grid.Row="1" Grid.Column="1"/>
+        <TextBox Text="{Binding TargetIssueKey}" FontSize="14" HorizontalAlignment="Right" VerticalAlignment="Center" Width="130" Height="25" Grid.Row="2" Grid.Column="0"/>
+        <Button Content="Fetch Now" Command="{Binding FetchNowCommand}" Width="100" Height="25" Grid.Row="2" Grid.Column="1"/>
+    </Grid>
+</Window>
--- a/VTSFetcher/Views/MainWindow.xaml.cs
+++ b/VTSFetcher/Views/MainWindow.xaml.cs
@@ -0,0 +1,80 @@
+using System.Windows;
+using VTSFetcher.ViewModels;
+
+namespace VTSFetcher.Views;
+
+/// <summary>
+/// Interaction logic for MainWindow.xaml
+/// </summary>
+public partial class MainWindow : Window
+{
+    private NotifyIcon _notifyIcon;
+    private bool _exitFlag = false;
+
+    public MainWindow(MainViewModel mainViewModel)
+    {
+        InitializeComponent();
+        DataContext = mainViewModel;
+
+        // NotifyIcon 생성
+        _notifyIcon = new NotifyIcon();
+        _notifyIcon.Icon = new Icon(SystemIcons.Application, 40, 40);
+        _notifyIcon.Text = "VTS Fetcher";
+        _notifyIcon.Visible = false;
+
+        // 컨텍스트 메뉴 생성
+        var contextMenu = new ContextMenuStrip();
+        contextMenu.Items.Add("Open", null, (s, e) => ShowWindow());
+        contextMenu.Items.Add("Fetch", null, (s, e) => FetchNow());
+        contextMenu.Items.Add("Exit", null, (s, e) => ExitApp());
+
+        _notifyIcon.ContextMenuStrip = contextMenu;
+
+        // 더블클릭 시 창 복원
+        _notifyIcon.DoubleClick += (s, e) => ShowWindow();
+    }
+    private void ShowWindow()
+    {
+        this.Show();
+        this.WindowState = WindowState.Normal;
+        this.Activate();
+        _notifyIcon.Visible = false;
+    }
+    private void FetchNow()
+    {
+        if (DataContext is MainViewModel vm)
+        {
+            vm.FetchNowCommand.Execute(null);
+        }
+    }
+    private void ExitApp()
+    {
+        _exitFlag = true;
+        this.Close();
+    }
+
+    protected override void OnStateChanged(EventArgs e)
+    {
+        base.OnStateChanged(e);
+
+        if (this.WindowState == WindowState.Minimized)
+        {
+            this.Hide();
+            _notifyIcon.Visible = true;
+        }
+    }
+
+    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
+    {
+        if (!_exitFlag)
+        {
+            e.Cancel = true;
+            this.Hide();
+            _notifyIcon.Visible = true;
+        }
+        else
+        {
+            _notifyIcon.Dispose();
+        }
+    }
+}
--- a/VaLogger/VaLogger.cs
+++ b/VaLogger/VaLogger.cs
@@ -0,0 +1,6 @@
+namespace VaLogger;
+
+public class VaLogger
+{
+
+}
--- a/VaLogger/VaLogger.csproj
+++ b/VaLogger/VaLogger.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
--- a/Vanadium.sln
+++ b/Vanadium.sln
@@ -0,0 +1,36 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36401.2
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VTSFetcher", "VTSFetcher\VTSFetcher.csproj", "{ECEF57A6-5A17-49D6-8E84-6B2479FFA630}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{C8D5274F-AC00-46C7-1F8D-E88E81087A52}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+	EndProjectSection
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VaLogger", "VaLogger\VaLogger.csproj", "{C9AFF5BA-A048-4C0A-A72B-1C21B39A9535}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{ECEF57A6-5A17-49D6-8E84-6B2479FFA630}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{ECEF57A6-5A17-49D6-8E84-6B2479FFA630}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ECEF57A6-5A17-49D6-8E84-6B2479FFA630}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{ECEF57A6-5A17-49D6-8E84-6B2479FFA630}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C9AFF5BA-A048-4C0A-A72B-1C21B39A9535}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C9AFF5BA-A048-4C0A-A72B-1C21B39A9535}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C9AFF5BA-A048-4C0A-A72B-1C21B39A9535}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C9AFF5BA-A048-4C0A-A72B-1C21B39A9535}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EE08A8F6-E909-4BB6-8781-331B9A477E8B}
+	EndGlobalSection
+EndGlobal