using System.Text.Json;
using System.Text.Json.Serialization;
using ForgejoReleaseSync.DTOs;
using Microsoft.Extensions.Logging;

namespace ForgejoReleaseSync.Services;

public class GithubService
{
    
    private readonly AppConfig _config;
    private readonly RepositoryConfig _repoConfig;
    private readonly HttpClient _httpClient;
    private readonly ILogger<GithubService> _logger;
    
    public GithubService(AppConfig config, RepositoryConfig repoConfig, ILogger<GithubService> logger)
    {
        var client = new HttpClient();
        client.BaseAddress = new Uri("https://api.github.com");
        client.DefaultRequestHeaders.Add("User-Agent", "ForgejoReleaseSync");
        client.DefaultRequestHeaders.Add("Accept", "application/json");
        client.Timeout = TimeSpan.FromSeconds(90);

        _config = config;
        _repoConfig = repoConfig;
        _httpClient = client;
        _logger = logger;
    }
    
    
    public async Task<List<GithubReleaseResponseDto>> FetchRepoReleasesAsync(string owner, string repo)
    {
        try
        {
            var response = await _httpClient.GetAsync(
                $"/repos/{owner}/{repo}/releases?per_page=3&page=1");

            response.EnsureSuccessStatusCode();

            var responseStream = await response.Content.ReadAsStreamAsync();
            var releases = await JsonSerializer.DeserializeAsync(responseStream,
                AppJsonSerializerContext.Default.ListGithubReleaseResponseDto);

            return releases ?? [];
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to fetch posts from Mastodon");
            return [];
        }
    }
}

[JsonSerializable(typeof(List<GithubReleaseResponseDto>))]
internal partial class AppJsonSerializerContext : JsonSerializerContext
{
}