using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Runtime.CompilerServices;
using Jellyfin.Plugin.MediaCleaner.Configuration;
using Jellyfin.Plugin.MediaCleaner.Models;
using Jellyfin.Plugin.MediaCleaner.ScheduledTasks;
using MediaBrowser.Controller.Entities;
using Microsoft.Extensions.Logging;

namespace Jellyfin.Plugin.MediaCleaner.Helpers;

public class LoggingHelper
{
    private readonly ILogger _logger;

    public LoggingHelper(ILogger logger)
    {
        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
    }

    private static PluginConfiguration Configuration =>
        Plugin.Instance!.Configuration;

    public void StartLogging()
    {
        if (Configuration.DebugMode)
        {
            _logger.LogInformation("--DEBUG MODE ACTIVE--");
        }

        _logger.LogInformation("-------------------------------------------------");
        _logger.LogInformation("Starting stale media scan...");
    }

    public void EndLogging()
    {
        _logger.LogInformation("Ending stale media scan...");
        _logger.LogInformation("-------------------------------------------------");
    }

    public void PrintDebugEndOfScanningForSeries(BaseItem item)
    {
        if (Configuration.DebugMode)
        {
            _logger.LogInformation("End of scanning for series: {Series}", item);
            _logger.LogInformation("-------------------------------------------------");
        }
    }


    public void StartScanningSeriesItems()
    {
        _logger.LogInformation("-------------------------------------------------");
        _logger.LogInformation("Starting scan of series items.");
        _logger.LogInformation("-------------------------------------------------");
    }

    public void StartScanningMoviesItems()
    {
        _logger.LogInformation("-------------------------------------------------");
        _logger.LogInformation("Starting scan of movies items.");
        _logger.LogInformation("-------------------------------------------------");
    }

    public void PrintStaleItemsInformation(IReadOnlyCollection<BaseItem> staleItems)
    {
        ArgumentNullException.ThrowIfNull(staleItems);

        _logger.LogInformation("Total stale items: {ItemCount}", staleItems.Count);
        _logger.LogInformation("Stale items found: {AllItems}", staleItems);
    }

    public void PrintStaleMoviesInformation(IReadOnlyCollection<BaseItem> staleMovies)
    {
        ArgumentNullException.ThrowIfNull(staleMovies);

        _logger.LogInformation("-------------------------------------------------");
        _logger.LogInformation("Stale Movies found: {StaleMovies}", staleMovies.Count);

        if (staleMovies.Count > 0 && Configuration.DebugMode)
        {
            foreach (var movieInfo in staleMovies)
            {
                _logger.LogInformation("Movie Info: ID: {Id} | Movie Name: {MovieName}", [movieInfo.Id, movieInfo.Name]);
            }
        }
    }

    public void PrintStaleEpisodesInformation(Func<IReadOnlyCollection<BaseItem>, List<SeriesInfo>> findSeriesInfoFromEpisodes, IReadOnlyCollection<BaseItem> staleEpisodes)
    {
        ArgumentNullException.ThrowIfNull(staleEpisodes);
        ArgumentNullException.ThrowIfNull(findSeriesInfoFromEpisodes);

        _logger.LogInformation("-------------------------------------------------");
        _logger.LogInformation("Stale Episodes found: {StaleEpisodes}", staleEpisodes.Count);

        if (staleEpisodes.Count > 0 && Configuration.DebugMode)
        {
            if (findSeriesInfoFromEpisodes == null)
            {
                throw new ArgumentNullException(nameof(findSeriesInfoFromEpisodes), "The method to find series information cannot be null.");
            }

            List<SeriesInfo> seriesInfoList = findSeriesInfoFromEpisodes(staleEpisodes);

            foreach (var seriesInfo in seriesInfoList)
            {
                _logger.LogInformation("Series Info: ID: {Id} | Series Name: {SeriesName} | Stale Seasons: {Seasons}", [seriesInfo.Id, seriesInfo.SeriesName, string.Join(", ", seriesInfo.Seasons)]);
            }
        }

        _logger.LogInformation("-------------------------------------------------");
    }

    public void PrintDebugDataForSeries(BaseItem item)
    {
        ArgumentNullException.ThrowIfNull(item);

        if (Configuration.DebugMode)
        {
            _logger.LogInformation("-------------------------------------------------");
            _logger.LogInformation("Debug data for series: {SeriesName}", item.Name);
            _logger.LogInformation("-------------------------------------------------");
        }
    }

    public void PrintDebugSeasonInfo()
    {
        if (Configuration.DebugMode)
        {
            _logger.LogInformation("Season debug information:");
        }
    }

    public void PrintDebugSeasonCreatedOutsideCutoff()
    {
        if(Configuration.DebugMode)
        {
            _logger.LogInformation("All episodes were created outside of media cutoff, season is possibly stale.");
        }
    }

    public void PrintDebugEpisodesWithUserData(IReadOnlyCollection<BaseItem> episodesWithUserData)
    {
        if(Configuration.DebugMode){
            _logger.LogInformation("Episodes with user data: {EpisodesWithUserData}", episodesWithUserData);
            _logger.LogInformation("-------------------------------------------------");
        }
    }

    public void PrintDebugNoUserDataAndOutsideCutoffEpisodeInfo(IReadOnlyCollection<BaseItem> episodes)
    {
        ArgumentNullException.ThrowIfNull(episodes);

        if(Configuration.DebugMode){
            _logger.LogInformation("No user data, and creation date is outside of media cutoff, Season is stale.");

            _logger.LogInformation("-------------------------------------------------");
            _logger.LogInformation("Episode creation dates:");
            _logger.LogInformation("-------------------------------------------------");
            foreach(BaseItem episode in episodes)
            {
                _logger.LogInformation("Episode: {EpisodeName} | Date Created: {EpisodeDateCreated}", [episode.Name, episode.DateCreated]);
            }
            _logger.LogInformation("-------------------------------------------------");
        }
    }


}