using System.Data;
using Dapper;
using Microsoft.Extensions.Configuration;
using Npgsql;

namespace UserOfTheDayBot.Data;

public interface IUserRepository
{
    Task<int> RegisterUserAsync(long chatId, long userId, string userName);
    Task<IEnumerable<(long userId, string userName)>> GetUsersWithNamesAsync(long chatId);
}

public class UserRepository : IUserRepository
{
    private readonly string _connectionString;

    public UserRepository(IConfiguration configuration)
    {
        _connectionString = configuration["DatabaseSettings:ConnectionString"];
    }


    public async Task<int> RegisterUserAsync(long chatId, long userId, string userName)
    {
        using (IDbConnection db = new NpgsqlConnection(_connectionString))
        {
            string query = "INSERT INTO users (chat_id, user_id, user_name) VALUES (@ChatId, @UserId, @UserName) ON CONFLICT (chat_id, user_id) DO NOTHING";
            return await db.ExecuteAsync(query, new { ChatId = chatId, UserId = userId, UserName = userName });
        }
    }

    public async Task<IEnumerable<(long userId, string userName)>> GetUsersWithNamesAsync(long chatId)
    {
        using (IDbConnection db = new NpgsqlConnection(_connectionString))
        {
            string query = "SELECT user_id, user_name FROM users WHERE chat_id = @ChatId";
            return await db.QueryAsync<(long, string)>(query, new { ChatId = chatId });
        }
    }
}