using FictionArchive.Service.Shared.Contracts.Events;
using FictionArchive.Service.UserNovelDataService.Models.Database;
using FictionArchive.Service.UserNovelDataService.Services;
using MassTransit;
using Microsoft.EntityFrameworkCore;

namespace FictionArchive.Service.UserNovelDataService.Consumers;

public class UserInvitedConsumer : IConsumer<IUserInvited>
{
    private readonly ILogger<UserInvitedConsumer> _logger;
    private readonly UserNovelDataServiceDbContext _dbContext;

    public UserInvitedConsumer(
        ILogger<UserInvitedConsumer> logger,
        UserNovelDataServiceDbContext dbContext)
    {
        _logger = logger;
        _dbContext = dbContext;
    }

    public async Task Consume(ConsumeContext<IUserInvited> context)
    {
        var message = context.Message;

        var userId = Guid.Parse(message.InvitedUserId);
        var exists = await _dbContext.Users.AnyAsync(u => u.Id == userId);
        if (exists)
        {
            _logger.LogDebug("User {UserId} already exists, skipping", message.InvitedUserId);
            return;
        }

        var user = new User
        {
            Id = userId,
            OAuthProviderId = message.InvitedOAuthProviderId
        };
        _dbContext.Users.Add(user);
        await _dbContext.SaveChangesAsync();

        _logger.LogInformation("Created user stub for {UserId}", message.InvitedUserId);
    }
}