using System;
using System.IO;
using System.Net.Http;
using System.Net.Http.Json;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace Todo.Services;

public class GithubVersionService
{
    private static HttpClient _client = new();
    private readonly string _url = "https://api.github.com/repos/mekasu0124/Todo/releases/latest";
    private readonly string versionFile = Path.Combine(Directory.GetCurrentDirectory(), "Services/version.txt");
    public record VersionData(string CurrentVersion, string LatestVersion, DateTime ReleaseDate, bool IsNewer);

    public async Task<VersionData> CheckVersion()
    {
        _client.DefaultRequestHeaders.UserAgent.TryParseAdd("request");
        try
        {
            var data = await _client.GetFromJsonAsync<ReleaseData>(_url);
            string version = File.ReadAllText(versionFile);
            return new VersionData(data.TagName, version, data.ReleaseDate, data.TagName != version);
        }
        catch (HttpRequestException ex)
        {
            return new VersionData("Exception", ex.Message, DateTime.Now, false);
        }
    }
}

public class ReleaseData
{
    [JsonPropertyName("tag_name")]
    public string TagName { get; set; }

    [JsonPropertyName("published_at")]
    public DateTime ReleaseDate { get; set; }
}