using Serilog;
using Microsoft.Extensions.Options;
using System.Text.Json;
using TriliumMind.Models;

namespace TriliumMind.Services;

public class JiraService
{
    private readonly AppConfigs _configs;
    private readonly Serilog.ILogger _log;

    public JiraService(AppConfigs configs)
    {
        _configs = configs;
        _log = Log.ForContext<JiraService>();
    }

    public async Task<JiraResponse> FetchJiraIssuesAsync(
        DateTimeOffset lastFetchTime, string targetProject,int startAt, CancellationToken ct)
    {
        var uri = $"{_configs.AppSettings.Jira.ApiBaseUrl}/"
            + $"search?jql=project={targetProject} "
            + $"AND updated >= \"{lastFetchTime.ToString("yyyy-MM-dd HH:mm")}\" "
            + $"&fields={_configs.AppSettings.Jira.SearchFields}"
            + $"&startAt={startAt}&maxResults=50";
        var request = new HttpRequestMessage(HttpMethod.Get, uri);
        request.Headers.Add("Accept", "application/json");
        request.Headers.Add("Authorization", $"Bearer {_configs.AppSettings.Jira.AccessToken}");
        Log.Debug("Fetch Jira 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 jiraResponse = JsonSerializer.Deserialize<JiraResponse>(jsonResponse);

        return jiraResponse;
    }

    public async Task<Issue> FetchJiraIssueAsync(string targetIssueKey, CancellationToken ct)
    {
        var uri = $"{_configs.AppSettings.Jira.ApiBaseUrl}/issue/{targetIssueKey}";
        var request = new HttpRequestMessage(HttpMethod.Get, uri);
        request.Headers.Add("Accept", "application/json");
        request.Headers.Add("Authorization", $"Bearer {_configs.AppSettings.Jira.AccessToken}");
        Log.Debug("Fetch a Jira 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;
    }
}