using Modules.Library.Domain.Entities.MediaContent.Items.Anime;
using Modules.Library.Domain.Gateways;

namespace Modules.Library.Domain.Interactors.MediaContent.Anime.Title;

public abstract class InteractorBase(IAnimeTitleGateway gateway, ILanguageGateway languageGateway, IGenreGateway genreGateway)
{
    internal readonly CommonPropertiesService _commonPropertiesService = new(languageGateway, genreGateway);

    protected async Task<AnimeTitle> GetTitle(Guid titleId) => await gateway.GetByIdAsync(titleId);
    protected static AnimeSeason GetSeason(AnimeTitle title, Guid seasonId)
    {
        return title.Items.OfType<AnimeSeason>().First(q => q.Id == seasonId);
    }
    protected static AnimeEpisode GetEpisode(AnimeTitle title, AnimeSeason? season, Guid episodeId)
    {
        if (season != null) return season.Episodes.First(q => q.Id == episodeId);
        else return title.Items.OfType<AnimeEpisode>().First(q => q.Id == episodeId);
    }

    protected static void OnStructureActionCompleted(AnimeTitle title, AnimeSeason? season = null)
    {
        if (season != null) CheckIfAnimeSeasonCompleted(title, season);
        CheckIfAnimeTitleCompleted(title);
    }

    private static void CheckIfAnimeTitleCompleted(AnimeTitle title)
    {
        var itemsQuery = title.Items.AsQueryable();
        var ucompletedSeasons = itemsQuery
            .Any(q => !q.CommonProperties.ReleaseDate.HasValue);
        var lastEpisodeReleaseDate = itemsQuery
            .OrderByDescending(q => q.CommonProperties.ReleaseDate)
            .FirstOrDefault()?.CommonProperties.ReleaseDate;
        title.Completed = !(ucompletedSeasons || lastEpisodeReleaseDate >= DateTime.UtcNow - title.ExpirationTime);
    }

    private static void CheckIfAnimeSeasonCompleted(AnimeTitle title, AnimeSeason season)
    {
        var itemsQuery = title.Items.AsQueryable();
        var ucompletedSeasons = itemsQuery
            .Any(q => !q.CommonProperties.ReleaseDate.HasValue);
        var lastEpisodeReleaseDate = itemsQuery
            .OrderByDescending(q => q.CommonProperties.ReleaseDate)
            .FirstOrDefault()?.CommonProperties.ReleaseDate;
        title.Completed = !(ucompletedSeasons || lastEpisodeReleaseDate >= DateTime.UtcNow - title.ExpirationTime);
    }
}