using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using Moonlight.Api.Database;
using Moonlight.Api.Database.Entities;
using Moonlight.Api.Interfaces;

namespace Moonlight.Api.Services;

public class UserLogoutService
{
    private readonly DatabaseRepository<User> Repository;
    private readonly IEnumerable<IUserLogoutHook> Hooks;
    private readonly IMemoryCache Cache;

    public UserLogoutService(
        DatabaseRepository<User> repository,
        IEnumerable<IUserLogoutHook> hooks,
        IMemoryCache cache
    )
    {
        Repository = repository;
        Hooks = hooks;
        Cache = cache;
    }

    public async Task LogoutAsync(int userId)
    {
        var user = await Repository
            .Query()
            .FirstOrDefaultAsync(x => x.Id == userId);
        
        if(user == null)
            throw new AggregateException($"User with id {userId} not found");

        foreach (var hook in Hooks)
            await hook.ExecuteAsync(user);
        
        user.InvalidateTimestamp = DateTimeOffset.UtcNow;
        await Repository.UpdateAsync(user);
        
        Cache.Remove(string.Format(UserAuthService.CacheKeyPattern, userId));
    }
}