using System.Diagnostics;
using System.Net;
using System.Text.Json.Nodes;
using System.Xml;
using Core;
using FluentScheduler;
using Interface.Jobs;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;

namespace Service.Jobs;

public class ChineseNfoRegistry : Registry, IChineseNfoRegistry
{
    private readonly IConfiguration _configuration;
    private readonly ILogger<ChineseNfoRegistry> _logger;
    private readonly HttpClient _client;

    public ChineseNfoRegistry(IConfiguration configuration, ILogger<ChineseNfoRegistry> logger)
    {
        _configuration = configuration;
        _logger = logger;

        var httpClientHandler = new HttpClientHandler();

        var proxyAddress = _configuration["ChineseNfo:HttpProxy"];

        if (string.IsNullOrEmpty(proxyAddress) == false)
        {
            httpClientHandler.Proxy = string.IsNullOrEmpty(proxyAddress) ? null : new WebProxy(proxyAddress, false);
            httpClientHandler.UseProxy = !string.IsNullOrEmpty(proxyAddress);
        }

        _client = new HttpClient(httpClientHandler);
        _client.BaseAddress = new Uri("https://api.themoviedb.org");

        Schedule(() => Job(true, true)).ToRunEvery(1).Days();
    }

    public async void Job(bool ignoreLocked, bool ignoreCompleted)
    {
        try
        {
            await JobExecute(ignoreLocked, ignoreCompleted);
        }
        catch (Exception e)
        {
            _logger.LogError(e, "ChineseNfoRegistry.Job() error");
        }
    }


    private async Task JobExecute(bool ignoreLocked, bool ignoreCompleted)
    {
        // 读取环境变量 tv folder 
        var tvFolder = _configuration["ChineseNfo:TvFolder"];
        if (string.IsNullOrEmpty(tvFolder))
        {
            Console.WriteLine("请设置环境变量 tv_folder");
            return;
        }

        var successCount = 0;
        var failedCount = 0;
        var skippedCount = 0;

        // 使用 root 角色执行 chmod -R 666  设置全部文件的读写权限
        var permission = new ProcessStartInfo("sudo", "chmod -R 666 " + tvFolder)
        {
            CreateNoWindow = true,
            UseShellExecute = false
        };
        Process.Start(permission);
        
        
        // 扫描 tvshow.nfo 文件
        var tvShowFiles = Directory.GetFiles(tvFolder, "tvshow.nfo", SearchOption.AllDirectories);

        foreach (var tvShowFile in tvShowFiles)
        {
            var nfoContent = File.ReadAllText(tvShowFile);

            // 读取 使用XML解析器 读取 <uniqueid type="tmdb">60059</uniqueid>
            var tvXml = new XmlDocument();
            tvXml.LoadXml(nfoContent);
            var uniqueIdNode = tvXml.SelectSingleNode("//uniqueid[@type='tmdb']");
            if (uniqueIdNode == null)
            {
                Console.WriteLine($"{tvShowFile}  &  未找到 tmdb id");
                continue;
            }

            if (!int.TryParse(uniqueIdNode.InnerText, out var tmdbId))
            {
                Console.WriteLine($"{tvShowFile}  &  tmdb id 不是数字");
                continue;
            }

            // 获取 tvShowFile 的文件夹
            var folderPath = Path.GetDirectoryName(tvShowFile);

            if (folderPath == null)
            {
                Console.WriteLine($"{tvShowFile}  &  未找到文件夹");
                continue;
            }

            // 扫描文件夹下其他 nfo 文件
            var seasonFiles = Directory.GetFiles(folderPath, "*.nfo", SearchOption.AllDirectories);

            seasonFiles = seasonFiles.Where(x => !x.EndsWith("tvshow.nfo")).ToArray();

            foreach (var episodeFile in seasonFiles)
            {
                var episodeContent = await File.ReadAllTextAsync(episodeFile);
                var episodeXml = new XmlDocument();
                episodeXml.LoadXml(episodeContent);

                // 判断有无 completed 节点
                var completedNode = episodeXml.SelectSingleNode("//completed");
                if (completedNode != null && ignoreCompleted == false)
                {
                    skippedCount++;
                    Console.WriteLine($"{episodeFile}  &  已完成");
                    continue;
                }

                // 判断 locked == true
                var lockedNode = episodeXml.SelectSingleNode("//lockdata");
                if (lockedNode != null && lockedNode.InnerText == "true" && ignoreLocked == false)
                {
                    skippedCount++;
                    Console.WriteLine($"{episodeFile}  &  已锁定");
                    continue;
                }

                // 读取 <season>1</season>
                var seasonNode = episodeXml.SelectSingleNode("//season");
                if (seasonNode == null)
                {
                    failedCount++;
                    Console.WriteLine($"{episodeFile}  &  未找到 season");
                    continue;
                }

                // 读取 <episode>1</episode>
                var episodeNode = episodeXml.SelectSingleNode("//episode");
                if (episodeNode == null)
                {
                    failedCount++;
                    Console.WriteLine($"{episodeFile}  &  未找到 episode");
                    continue;
                }

                if (!int.TryParse(seasonNode.InnerText, out var season))
                {
                    failedCount++;
                    Console.WriteLine($"{episodeFile}  &  season 不是数字");
                    continue;
                }

                if (!int.TryParse(episodeNode.InnerText, out var episode))
                {
                    failedCount++;
                    Console.WriteLine($"{episodeFile}  &  episode 不是数字");
                    continue;
                }

                // 设置 title 
                var titleNode = episodeXml.SelectSingleNode("//title");
                if (titleNode == null)
                {
                    failedCount++;
                    Console.WriteLine($"{episodeFile}  &  未找到 title");
                    continue;
                }

                var json = await GetTmdbEpisode(tmdbId, season, episode);

                if (json == null)
                {
                    failedCount++;
                    continue;
                }

                var title = json["name"]?.ToString();
                var overview = json["overview"]?.ToString();

                var isUpdate = false;
                if (!string.IsNullOrEmpty(title))
                {
                    title = $"<![CDATA[{title}]]>";

                    if (titleNode.InnerXml != title)
                    {
                        isUpdate = true;
                        // 写入且不转义
                        titleNode.InnerXml = title;
                    }
                }

                var plotNode = episodeXml.SelectSingleNode("//plot");

                if (!string.IsNullOrEmpty(overview) && plotNode != null)
                {
                    overview = $"<![CDATA[{overview}]]>";
                    if (plotNode.InnerXml != overview)
                    {
                        isUpdate = true;
                        plotNode.InnerXml = overview;
                    }
                }

                if (!isUpdate)
                {
                    skippedCount++;
                    Console.WriteLine($"{episodeFile}  &  无更新");
                    continue;
                }

                successCount++;

                // 添加一个已完成节点
                if (completedNode == null)
                {
                    episodeXml.DocumentElement?.AppendChild(episodeXml.CreateElement("completed"));
                }

                // 锁定
                if (lockedNode == null)
                {
                    lockedNode = episodeXml.CreateElement("lockdata");
                    episodeXml.DocumentElement?.AppendChild(lockedNode);
                    lockedNode.InnerText = "true";
                }
                else
                {
                    lockedNode.InnerText = "true";
                }

                try
                {
                    episodeXml.Save(episodeFile);
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                    continue;
                }

                Console.WriteLine($"{episodeFile}  &  {title}  &  {overview}");

                await Task.Delay(10000);
            }
        }

        await WxNotify.SendCommonAsync($"ChineseNfoRegistry.Job() success: {successCount}, failed: {failedCount}, skipped: {skippedCount}");
    }

    private async Task<JsonObject?> GetTmdbEpisode(int tmdbId, int season, int episode)
    {
        const string episodeUrl = "/3/tv/{0}/season/{1}/episode/{2}?api_key=e28e1bc408db7adefc8bacce225c5085&language=zh-CN";
        var requestUrl = string.Format(episodeUrl, tmdbId, season, episode);

        try
        {
            var response = await _client.GetAsync(requestUrl);
            if (!response.IsSuccessStatusCode)
            {
                Console.WriteLine($"{requestUrl}  &  {response.StatusCode}");
                return null;
            }

            var content = await response.Content.ReadAsStringAsync();
            var json = JsonNode.Parse(content);
            return json as JsonObject;
        }
        catch (Exception e)
        {
            Console.WriteLine($"{requestUrl} \r {e}");
            return null;
        }
    }
}