using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using Avalonia.Media.Imaging;
using CRD.Utils.Structs.Crunchyroll;
using CRD.Utils.Structs.History;
using Newtonsoft.Json;

namespace CRD.Utils.Structs;

public class CrunchyEpisodeList{
    public int Total{ get; set; }
    public List<CrunchyEpisode>? Data{ get; set; }
    public Meta Meta{ get; set; }
}

public class CrunchyEpisode : IHistorySource{
    [JsonProperty("next_episode_id")]
    public string NextEpisodeId{ get; set; }

    [JsonProperty("series_id")]
    public string SeriesId{ get; set; }

    [JsonProperty("season_number")]
    public int SeasonNumber{ get; set; }

    [JsonProperty("next_episode_title")]
    public string NextEpisodeTitle{ get; set; }

    [JsonProperty("availability_notes")]
    public string AvailabilityNotes{ get; set; }

    [JsonProperty("duration_ms")]
    public int DurationMs{ get; set; }

    [JsonProperty("series_slug_title")]
    public string SeriesSlugTitle{ get; set; }

    [JsonProperty("series_title")]
    public string SeriesTitle{ get; set; }

    [JsonProperty("is_dubbed")]
    public bool IsDubbed{ get; set; }

    public List<EpisodeVersion>? Versions{ get; set; }
    public string Identifier{ get; set; }

    [JsonProperty("sequence_number")]
    public float SequenceNumber{ get; set; }

    [JsonProperty("eligible_region")]
    public string EligibleRegion{ get; set; }

    [JsonProperty("availability_starts")]
    public DateTime AvailabilityStarts{ get; set; }

    public Images Images{ get; set; } = new();

    [JsonProperty("season_id")]
    public string SeasonId{ get; set; }

    [JsonProperty("seo_title")]
    public string SeoTitle{ get; set; }

    [JsonProperty("is_premium_only")]
    public bool IsPremiumOnly{ get; set; }

    [JsonProperty("extended_maturity_rating")]
    public Dictionary<string, object> ExtendedMaturityRating{ get; set; }

    public string Title{ get; set; }

    [JsonProperty("production_episode_id")]
    public string ProductionEpisodeId{ get; set; }

    [JsonProperty("premium_available_date")]
    public DateTime PremiumAvailableDate{ get; set; }

    [JsonProperty("season_title")]
    public string SeasonTitle{ get; set; }

    [JsonProperty("seo_description")]
    public string SeoDescription{ get; set; }

    [JsonProperty("audio_locale")]
    public string AudioLocale{ get; set; }

    public required string Id{ get; set; }

    [JsonProperty("media_type")]
    public string? MediaType{ get; set; }

    [JsonProperty("availability_ends")]
    public DateTime AvailabilityEnds{ get; set; }

    [JsonProperty("free_available_date")]
    public DateTime FreeAvailableDate{ get; set; }

    public string Playback{ get; set; }

    [JsonProperty("channel_id")]
    public string? ChannelId{ get; set; }

    public string? Episode{ get; set; }

    [JsonProperty("is_mature")]
    public bool IsMature{ get; set; }

    [JsonProperty("listing_id")]
    public string ListingId{ get; set; }

    [JsonProperty("episode_air_date")]
    public DateTime EpisodeAirDate{ get; set; }

    public string Slug{ get; set; }

    [JsonProperty("available_date")]
    public DateTime AvailableDate{ get; set; }

    [JsonProperty("subtitle_locales")]
    public List<string> SubtitleLocales{ get; set; }

    [JsonProperty("slug_title")]
    public string SlugTitle{ get; set; }

    [JsonProperty("available_offline")]
    public bool AvailableOffline{ get; set; }

    public string Description{ get; set; }

    [JsonProperty("is_subbed")]
    public bool IsSubbed{ get; set; }

    [JsonProperty("premium_date")]
    public DateTime PremiumDate{ get; set; }

    [JsonProperty("upload_date")]
    public DateTime UploadDate{ get; set; }

    [JsonProperty("season_slug_title")]
    public string SeasonSlugTitle{ get; set; }

    [JsonProperty("closed_captions_available")]
    public bool ClosedCaptionsAvailable{ get; set; }

    [JsonProperty("episode_number")]
    public int? EpisodeNumber{ get; set; }

    [JsonProperty("season_tags")]
    public List<object> SeasonTags{ get; set; }

    [JsonProperty("maturity_ratings")]
    public List<string> MaturityRatings{ get; set; }

    [JsonProperty("streams_link")]
    public string? StreamsLink{ get; set; }

    [JsonProperty("mature_blocked")]
    public bool? MatureBlocked{ get; set; }

    [JsonProperty("is_clip")]
    public bool IsClip{ get; set; }

    [JsonProperty("hd_flag")]
    public bool HdFlag{ get; set; }

    [JsonProperty("hide_season_title")]
    public bool? HideSeasonTitle{ get; set; }

    [JsonProperty("hide_season_number")]
    public bool? HideSeasonNumber{ get; set; }

    public bool? IsSelected{ get; set; }

    [JsonProperty("seq_id")]
    public string SeqId{ get; set; }

    [JsonProperty("__links__")]
    public Links? Links{ get; set; }

    [JsonIgnore]
    public EpisodeType EpisodeType{ get; set; } = EpisodeType.Episode;

    #region Interface

    public string GetSeriesId(){
        return SeriesId;
    }

    public string GetSeriesTitle(){
        return SeriesTitle;
    }

    public string GetSeasonTitle(){
        return SeasonTitle;
    }

    public string GetSeasonNum(){
        return Helpers.ExtractNumberAfterS(Identifier) ?? SeasonNumber + "";
    }

    public string GetSeasonId(){
        return SeasonId;
    }

    public string GetEpisodeId(){
        return Id;
    }

    public string GetEpisodeNumber(){
        return Episode ?? "";
    }

    public string GetEpisodeTitle(){
        if (Identifier.Contains("|M|")){
            if (string.IsNullOrEmpty(Title)){
                if (SeasonTitle.StartsWith(SeriesTitle)){
                    var splitTitle = SeasonTitle.Split(new[]{ SeriesTitle }, StringSplitOptions.None);
                    var titlePart = splitTitle.Length > 1 ? splitTitle[1] : splitTitle[0];
                    var cleanedTitle = Regex.Replace(titlePart, @"^[^a-zA-Z]+", "");

                    return cleanedTitle;
                }

                return SeasonTitle;
            }

            if (Title.StartsWith(SeriesTitle)){
                var splitTitle = Title.Split(new[]{ SeriesTitle }, StringSplitOptions.None);
                var titlePart = splitTitle.Length > 1 ? splitTitle[1] : splitTitle[0];
                var cleanedTitle = Regex.Replace(titlePart, @"^[^a-zA-Z]+", "");

                return cleanedTitle;
            }

            return Title;
        }

        return Title;
    }

    public string GetEpisodeDescription(){
        return Description;
    }

    public bool IsSpecialSeason(){
        if (string.IsNullOrEmpty(Identifier)){
            return false;
        }

        // does NOT contain "|S" followed by one or more digits immediately after
        string pattern = @"^(?!.*\|S\d+).*";

        return Regex.IsMatch(Identifier, pattern);
    }

    public bool IsSpecialEpisode(){
        return !int.TryParse(Episode, out _);
    }

    public List<string> GetAnimeIds(){
        return[];
    }

    public List<string> GetEpisodeAvailableDubLang(){
        var langList = new List<string>();

        if (Versions != null){
            langList.AddRange(Versions.Select(version => version.AudioLocale));
        } else{
            langList.Add(AudioLocale);
        }

        return Languages.SortListByLangList(langList);
    }

    public List<string> GetEpisodeAvailableSoftSubs(){
        return Languages.SortListByLangList(SubtitleLocales);
    }

    public DateTime GetAvailableDate(){
        return PremiumAvailableDate;
    }

    public SeriesType GetSeriesType(){
        return SeriesType.Series;
    }

    public EpisodeType GetEpisodeType(){
        return EpisodeType;
    }

    public string GetImageUrl(){
        return Images?.Thumbnail?
            .FirstOrDefault()?
            .FirstOrDefault()?
            .Source ?? string.Empty;
    }

    #endregion
}

public class Images{
    [JsonProperty("poster_tall")]
    public List<List<Image>> PosterTall{ get; set; } =[];

    [JsonProperty("poster_wide")]
    public List<List<Image>> PosterWide{ get; set; } =[];

    [JsonProperty("promo_image")]
    public List<List<Image>> PromoImage{ get; set; } =[];

    public List<List<Image>> Thumbnail{ get; set; } =[];
}

public class Image{
    public int Height{ get; set; }
    public string Source{ get; set; }
    public ImageType Type{ get; set; }
    public int Width{ get; set; }
}

public class EpisodeVersion{
    [JsonProperty("audio_locale")]
    public string AudioLocale{ get; set; }

    public string Guid{ get; set; }

    [JsonProperty("is_premium_only")]
    public bool IsPremiumOnly{ get; set; }

    [JsonProperty("media_guid")]
    public string? MediaGuid{ get; set; }

    public bool Original{ get; set; }

    [JsonProperty("season_guid")]
    public string SeasonGuid{ get; set; }

    public string Variant{ get; set; }
}

public class Link{
    public string Href{ get; set; }
}

public class Links(){
    public Dictionary<string, Link> LinkMappings{ get; set; } = new(){
        { "episode/channel", default },
        { "episode/next_episode", default },
        { "episode/season", default },
        { "episode/series", default },
        { "streams", default }
    };
}

public class CrunchyEpMeta{
    public List<CrunchyEpMetaData> Data{ get; set; } =[];

    public string? SeriesTitle{ get; set; }
    public string? SeasonTitle{ get; set; }
    public string? EpisodeNumber{ get; set; }
    public string? EpisodeTitle{ get; set; }
    public string? Description{ get; set; }
    public string? SeasonId{ get; set; }
    public string? Season{ get; set; }
    public string? SeriesId{ get; set; }
    public string? AbsolutEpisodeNumberE{ get; set; }
    public string? Image{ get; set; }
    public string? ImageBig{ get; set; }
    public bool Paused{ get; set; }
    public DownloadProgress DownloadProgress{ get; set; } = new();

    public List<string>? SelectedDubs{ get; set; }

    public string Hslang{ get; set; } = "none";

    public List<string>? AvailableSubs{ get; set; }

    public string? DownloadPath{ get; set; }
    public string? VideoQuality{ get; set; }
    public List<string> DownloadSubs{ get; set; } =[];
    public bool Music{ get; set; }

    public string Resolution{ get; set; }
    
    public string AvailableQualities{ get; set; }

    public List<string> downloadedFiles{ get; set; } =[];

    public bool OnlySubs{ get; set; }

    public CrDownloadOptions? DownloadSettings;

    public bool HighlightAllAvailable{ get; set; }
}

public class DownloadProgress{
    public bool IsDownloading = false;
    public bool Done = false;
    public bool Error = false;
    public string Doing = string.Empty;

    public int Percent{ get; set; }
    public double Time{ get; set; }
    public double DownloadSpeed{ get; set; }
}

public class CrunchyEpMetaData{
    public string MediaId{ get; set; }
    public LanguageItem? Lang{ get; set; }
    public string? Playback{ get; set; }
    public List<EpisodeVersion>? Versions{ get; set; }
    public bool IsSubbed{ get; set; }
    public bool IsDubbed{ get; set; }

    public (string? seasonID, string? guid) GetOriginalIds(){
        var version = Versions?.FirstOrDefault(a => a.Original);
        if (version != null && !string.IsNullOrEmpty(version.Guid) && !string.IsNullOrEmpty(version.SeasonGuid)){
            return (version.SeasonGuid, version.Guid);
        }

        return (null, null);
    }
}

public class CrunchyRollEpisodeData{
    public string Key{ get; set; }
    public EpisodeAndLanguage EpisodeAndLanguages{ get; set; }
}