using Microsoft.EntityFrameworkCore;
using PlaylistShared.Api.Data;
using PlaylistShared.Api.Entities;

namespace PlaylistShared.Api.Services;

public class TrackAdditionLogService
{
    private readonly ApplicationDbContext _db;

    public TrackAdditionLogService(ApplicationDbContext db)
    {
        _db = db;
    }

    public async Task LogAdditionAsync(Guid sharedPlaylistId, string trackId, Guid addedByUserId)
    {
        var log = new TrackAdditionLogEntity
        {
            Id = Guid.NewGuid(),
            SharedPlaylistId = sharedPlaylistId,
            TrackId = trackId,
            AddedByUserId = addedByUserId,
            AddedAtUtc = DateTime.UtcNow
        };
        _db.TrackAdditionLogs.Add(log);
        await _db.SaveChangesAsync();
    }

    public async Task<bool> IsTrackAddedByUserAsync(Guid sharedPlaylistId, string trackId, Guid userId)
    {
        return await _db.TrackAdditionLogs
            .AnyAsync(l => l.SharedPlaylistId == sharedPlaylistId && l.TrackId == trackId && l.AddedByUserId == userId);
    }

    public async Task RemoveLogsForTrackAsync(Guid sharedPlaylistId, string trackId)
    {
        var logs = await _db.TrackAdditionLogs
            .Where(l => l.SharedPlaylistId == sharedPlaylistId && l.TrackId == trackId)
            .ToListAsync();
        _db.TrackAdditionLogs.RemoveRange(logs);
        await _db.SaveChangesAsync();
    }
}