using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Shared.Models.Base;
using Shared.Models.Online.Filmix;
using Shared.Models.Online.Settings;
using Shared.Models.Templates;
using System.Collections.Concurrent;
using System.Text.RegularExpressions;
using System.Web;

namespace Shared.Engine.Online
{
    public class FilmixInvoke
    {
        static ConcurrentDictionary<string, string> user_dev_ids = new ConcurrentDictionary<string, string>();

        static readonly JsonSerializerSettings jsonSettings = new JsonSerializerSettings { Error = (se, ev) => { ev.ErrorContext.Handled = true; } };

        #region FilmixInvoke
        FilmixSettings init;

        public bool disableSphinxSearch, reserve;

        public string token;
        string host, args, route;
        string apihost;
        Func<string, string> onstreamfile;
        Func<string, string> onlog;
        Action requesterror;
        bool rjson;
        HttpHydra httpHydra;

        public FilmixInvoke(FilmixSettings init, string host, string token, string route, HttpHydra httpHydra, Func<string, string> onstreamfile, Func<string, string> onlog = null, Action requesterror = null, bool rjson = false)
        {
            this.init = init;
            apihost = init.corsHost();
            reserve = init.reserve;
            this.token = token;
            this.route = route;
            this.host = host != null ? $"{host}/" : null;
            this.onstreamfile = onstreamfile;
            this.onlog = onlog;
            this.requesterror = requesterror;
            this.rjson = rjson;
            this.httpHydra = httpHydra;

            string user_dev_id = user_dev_ids.GetOrAdd(token ?? string.Empty, (k) => UnicTo.Code(16));

            args = $"app_lang=ru_RU&user_dev_apk=2.2.10.0&user_dev_id={user_dev_id}&user_dev_name=Xiaomi+24069PC21G&user_dev_os=14&user_dev_token={token}&user_dev_vendor=Xiaomi";
        }
        #endregion

        #region Search
        async public Task<SearchResult> Search(string title, string original_title, int clarification, int year, bool similar)
        {
            if (string.IsNullOrWhiteSpace(title ?? original_title))
                return null;

            string uri = $"{apihost}/api/v2/search?story={HttpUtility.UrlEncode(clarification == 1 ? title : (original_title ?? title))}&{args}";
            onlog?.Invoke(uri);
            
            var root = await httpHydra.Get<List<SearchModel>>(uri, useDefaultHeaders: false, safety: !string.IsNullOrEmpty(token));

            if (root == null || root.Count == 0)
                return await Search2(title, original_title, clarification, year);

            var ids = new List<int>(root.Count);
            var stpl = new SimilarTpl(root.Count);

            string enc_title = HttpUtility.UrlEncode(title);
            string enc_original_title = HttpUtility.UrlEncode(original_title);

            string stitle = StringConvert.SearchName(title);
            string sorigtitle = StringConvert.SearchName(original_title);

            foreach (var item in root)
            {
                if (item == null)
                    continue;

                string name = !string.IsNullOrEmpty(item.title) && !string.IsNullOrEmpty(item.original_title) ? $"{item.title} / {item.original_title}"  : (item.title ?? item.original_title);

                stpl.Append(name, item.year.ToString(), string.Empty, host + $"{route}?postid={item.id}&title={enc_title}&original_title={enc_original_title}", PosterApi.Size(item.poster)); 

                if ((!string.IsNullOrEmpty(stitle) && StringConvert.SearchName(item.title) == stitle) ||
                    (!string.IsNullOrEmpty(sorigtitle) && StringConvert.SearchName(item.original_title) == sorigtitle))
                {
                    if (item.year == year)
                        ids.Add(item.id);
                }
            }

            onlog?.Invoke("ids: " + ids.Count);

            if (ids.Count == 1 && !similar)
                return new SearchResult() { id = ids[0] };

            return new SearchResult() { similars = stpl };
        }
        #endregion

        #region Search2
        async Task<SearchResult> Search2(string title, string original_title, int clarification, int year)
        {
            async Task<List<SearchModel>> gosearch(string story)
            {
                if (string.IsNullOrEmpty(story))
                    return null;

                string uri = $"https://api.filmix.tv/api-fx/list?search={HttpUtility.UrlEncode(story)}&limit=48";
                onlog?.Invoke(uri);

                List<SearchModel> items = null;

                try
                {
                    var root = await httpHydra.Get<JObject>(uri, useDefaultHeaders: false, safety: !string.IsNullOrEmpty(token));
                    items = root["items"]?.ToObject<List<SearchModel>>();
                }
                catch { }

                if (items == null || items.Count == 0)
                    return null;

                return items;
            }

            var result = await gosearch(clarification == 1 ? original_title : title);
            if (result == null)
                result = await gosearch(clarification == 1 ? title : original_title);

            if (result == null)
                return await Search3(title, original_title, clarification, year);

            var ids = new List<int>(result.Count);
            var stpl = new SimilarTpl(result.Count);

            string enc_title = HttpUtility.UrlEncode(title);
            string enc_original_title = HttpUtility.UrlEncode(original_title);

            string stitle = StringConvert.SearchName(title);
            string sorigtitle = StringConvert.SearchName(original_title);

            foreach (var item in result)
            {
                if (item == null)
                    continue;

                string name = !string.IsNullOrEmpty(item.title) && !string.IsNullOrEmpty(item.original_name) ? $"{item.title} / {item.original_name}" : (item.title ?? item.original_name);

                stpl.Append(name, item.year.ToString(), string.Empty, host + $"{route}?postid={item.id}&title={enc_title}&original_title={enc_original_title}");

                if ((!string.IsNullOrEmpty(stitle) && StringConvert.SearchName(item.title) == stitle) ||
                    (!string.IsNullOrEmpty(sorigtitle) && StringConvert.SearchName(item.original_name) == sorigtitle))
                {
                    if (item.year == year)
                        ids.Add(item.id);
                }
            }

            onlog?.Invoke("ids: " + ids.Count);

            if (ids.Count == 1)
                return new SearchResult() { id = ids[0] };

            return new SearchResult() { similars = stpl };
        }
        #endregion

        #region Search3
        async Task<SearchResult> Search3(string title, string original_title, int clarification, int year)
        {
            return null;

            //if (disableSphinxSearch)
            //{
            //    requesterror?.Invoke();
            //    return null;
            //}

            //onlog?.Invoke("Search3");

            //string html = await onpost.Invoke("https://filmix.my/engine/ajax/sphinx_search.php", $"scf=fx&story={HttpUtility.UrlEncode(clarification == 1 ? title : (original_title ?? title))}&search_start=0&do=search&subaction=search&years_ot=1902&years_do={DateTime.Today.Year}&kpi_ot=1&kpi_do=10&imdb_ot=1&imdb_do=10&sort_name=&undefined=asc&sort_date=&sort_favorite=&simple=1", HeadersModel.Init( 
            //    ("Origin", "https://filmix.my"),
            //    ("Referer", "https://filmix.my/search/"),
            //    ("X-Requested-With", "XMLHttpRequest"),
            //    ("Sec-Fetch-Site", "same-origin"),
            //    ("Sec-Fetch-Mode", "cors"),
            //    ("Sec-Fetch-Dest", "empty"),
            //    ("Cookie", "x-a-key=sinatra; FILMIXNET=2g5orcue70hmbkugbr7vi431l0; _ga_GYLWSWSZ3C=GS1.1.1703578122.1.0.1703578122.0.0.0; _ga=GA1.1.1855910641.1703578123")
            //));

            //if (html == null)
            //{
            //    requesterror?.Invoke();
            //    return null;
            //}

            //var rows = html.Split("</article>");

            //var ids = new List<int>(rows.Length);
            //var stpl = new SimilarTpl(rows.Length);

            //string enc_title = HttpUtility.UrlEncode(title);
            //string enc_original_title = HttpUtility.UrlEncode(original_title);

            //string stitle = title?.ToLower();
            //string sorigtitle = original_title?.ToLower();

            //foreach (string row in rows)
            //{
            //    string ftitle = Regex.Match(row, "itemprop=\"name\" content=\"([^\"]+)\"").Groups[1].Value;
            //    string ftitle_orig = Regex.Match(row, "itemprop=\"alternativeHeadline\" content=\"([^\"]+)\"").Groups[1].Value;
            //    string fyear = Regex.Match(row, "itemprop=\"copyrightYear\"[^>]+>([0-9]{4})").Groups[1].Value;
            //    string fid = Regex.Match(row, "data-id=\"([0-9]+)\"").Groups[1].Value;

            //    if (int.TryParse(fid, out int id) && id > 0)
            //    {
            //        string name = !string.IsNullOrEmpty(ftitle) && !string.IsNullOrEmpty(ftitle_orig) ? $"{ftitle} / {ftitle_orig}" : (ftitle ?? ftitle_orig);

            //        stpl.Append(name, fyear, string.Empty, host + $"{route}?postid={id}&title={enc_title}&original_title={enc_original_title}");

            //        if ((!string.IsNullOrEmpty(stitle) && ftitle.ToLower() == stitle) ||
            //            (!string.IsNullOrEmpty(sorigtitle) && ftitle_orig.ToLower() == sorigtitle))
            //        {
            //            if (fyear == year.ToString())
            //                ids.Add(id);
            //        }
            //    }
            //}

            //onlog?.Invoke("ids: " + ids.Count);

            //if (ids.Count == 1)
            //    return new SearchResult() { id = ids[0] };

            //return new SearchResult() { similars = stpl };
        }
        #endregion

        #region Post
        async public Task<RootObject> Post(int postid)
        {
            string uri = $"{apihost}/api/v2/post/{postid}?{args}";
            onlog?.Invoke(uri);

            string json = await httpHydra.Get(uri, useDefaultHeaders: false, safety: !string.IsNullOrEmpty(token));
            if (json == null)
            {
                requesterror?.Invoke();
                return null;
            }

            try
            {
                string jsonFix = json.Contains("\"playlist\":[],") 
                    ? json.Replace("\"playlist\":[],", "\"playlist\":null,")
                    : json;

                var root = JsonConvert.DeserializeObject<RootObject>(jsonFix, jsonSettings);

                if (root?.player_links == null)
                    return null;

                return root;
            }
            catch { return null; }
        }
        #endregion

        #region Html
        public ITplResult Tpl(RootObject root, bool pro, int postid, string title, string original_title, int t, int? s, VastConf vast = null)
        {
            var player_links = root.player_links;
            if (player_links.movie == null && player_links.playlist == null)
                return default;

            int filmixservtime = DateTime.UtcNow.AddHours(2).Hour;
            bool hidefree720 = string.IsNullOrEmpty(token) /*&& filmixservtime >= 19 && filmixservtime <= 23*/;

            if (player_links.movie != null && player_links.movie.Length > 0)
            {
                #region Фильм
                if (player_links.movie.Length == 1 && player_links.movie[0].translation.ToLower().StartsWith("заблокировано "))
                    return default;

                var cdns = reserve ? player_links.movie
                        .Select(e => Regex.Match(e.link, "^(https?://[^/]+)").Groups[1].Value)
                        .ToHashSet() : null;

                var mtpl = new MovieTpl(title, original_title, player_links.movie.Length);

                foreach (var v in player_links.movie)
                {
                    var streamquality = new StreamQualityTpl();

                    foreach (int q in new int[] { 2160, 1440, 1080, 720, 480 })
                    {
                        if (!pro)
                        {
                            if (hidefree720 && q > 480)
                                continue;

                            if (q > 720)
                                continue;
                        }

                        if (!v.link.Contains($"{q},"))
                            continue;

                        string l = Regex.Replace(v.link, "_\\[[0-9,]+\\]\\.mp4", $"_{q}.mp4");

                        if (init.hls && !Regex.IsMatch(l, "/(HDR10p?|HEVC)/"))
                        {
                            var m = Regex.Match(l, "^(https?://[^/]+)/s/([^/]+)/(.*)");
                            if (m.Success)
                                l = $"{m.Groups[1].Value}/hls/{m.Groups[3].Value}/index.m3u8?hash={m.Groups[2].Value}";
                        }

                        if (reserve)
                        {
                            foreach (string cdn in cdns)
                            {
                                if (!l.Contains(cdn))
                                {
                                    l += " or " + Regex.Replace(l, "^https?://[^/]+", cdn);
                                    break;
                                }
                            }
                        }

                        streamquality.Append(onstreamfile.Invoke(l), $"{q}p");
                    }

                    mtpl.Append(v.translation, streamquality.Firts().link, streamquality: streamquality, vast: vast);
                }

                return mtpl;
                #endregion
            }
            else
            {
                #region Сериал
                if (player_links.playlist == null || player_links.playlist.Count == 0)
                    return default;

                string enc_title = HttpUtility.UrlEncode(title);
                string enc_original_title = HttpUtility.UrlEncode(original_title);

                if (s == null)
                {
                    #region Сезоны
                    var tpl = new SeasonTpl(!string.IsNullOrEmpty(root?.quality) ? $"{root.quality.Replace("+", "")}p" : null, player_links.playlist.Count);

                    foreach (var season in player_links.playlist)
                    {
                        string link = host + $"{route}?rjson={rjson}&postid={postid}&title={enc_title}&original_title={enc_original_title}&s={season.Key}";
                        tpl.Append($"{season.Key.Replace("-1", "1")} сезон", link, season.Key);
                    }

                    return tpl;
                    #endregion
                }
                else
                {
                    string sArch = s?.ToString();

                    if (sArch == null)
                        return default;

                    #region Перевод
                    var voices = player_links.playlist[sArch];

                    int indexTranslate = 0;
                    var vtpl = new VoiceTpl(voices.Count);

                    foreach (var translation in voices)
                    {
                        string link = host + $"{route}?rjson={rjson}&postid={postid}&title={enc_title}&original_title={enc_original_title}&s={s}&t={indexTranslate}";
                        bool active = t == indexTranslate;

                        indexTranslate++;
                        vtpl.Append(translation.Key, active, link);
                    }
                    #endregion

                    #region Deserialize
                    Dictionary<string, Movie> episodes = null;

                    try
                    {
                        episodes = player_links.playlist[sArch].ElementAt(t).Value.ToObject<Dictionary<string, Movie>>();
                    }
                    catch
                    {
                        try
                        {
                            int episod_id = 0;
                            episodes = new Dictionary<string, Movie>();

                            foreach (var item in player_links.playlist[sArch].ElementAt(t).Value.ToObject<List<Movie>>())
                            {
                                episod_id++;
                                episodes.Add(episod_id.ToString(), item);
                            }
                        }
                        catch { }
                    }

                    if (episodes == null || episodes.Count == 0)
                        return default;
                    #endregion

                    var cdns = reserve ? episodes
                        .Select(e => Regex.Match(e.Value.link, "^(https?://[^/]+)").Groups[1].Value)
                        .ToHashSet() : null;

                    #region Серии
                    var etpl = new EpisodeTpl(vtpl, episodes.Count);

                    foreach (var episode in episodes)
                    {
                        var streamquality = new StreamQualityTpl();

                        foreach (var lq in episode.Value.qualities.OrderByDescending(i => i))
                        {
                            if (!pro)
                            {
                                if (hidefree720 && lq > 480)
                                    continue;

                                if (lq > 720)
                                    continue;
                            }

                            string l = episode.Value.link.Replace("_%s.mp4", $"_{lq}.mp4");

                            if (init.hls && !Regex.IsMatch(l, "/(HDR10p?|HEVC)/"))
                            {
                                var m = Regex.Match(l, "^(https?://[^/]+)/s/([^/]+)/(.*)");
                                if (m.Success)
                                    l = $"{m.Groups[1].Value}/hls/{m.Groups[3].Value}/index.m3u8?hash={m.Groups[2].Value}";
                            }

                            if (reserve)
                            {
                                foreach (string cdn in cdns)
                                {
                                    if (!l.Contains(cdn))
                                    {
                                        l += " or " + Regex.Replace(l, "^https?://[^/]+", cdn);
                                        break;
                                    }
                                }
                            }

                            streamquality.Append(onstreamfile.Invoke(l), $"{lq}p");
                        }

                        int fis = s == -1 ? 1 : (s ?? 1);

                        etpl.Append($"{episode.Key} серия", title ?? original_title, fis.ToString(), episode.Key, streamquality.Firts().link, streamquality: streamquality, vast: vast);
                    }
                    #endregion

                    return etpl;
                }
                #endregion
            }
        }
        #endregion
    }
}