Shogi/Shogi.Api/Repositories/QueryRepository.cs

using Dapper;
using Shogi.Contracts.Api;
using Shogi.Contracts.Types;
using System.Data.SqlClient;

namespace Shogi.Api.Repositories;

public class QueryRepository : IQueryRespository
{
    private readonly string connectionString;

    public QueryRepository(IConfiguration configuration)
    {
        var connectionString = configuration.GetConnectionString("ShogiDatabase") ?? throw new InvalidOperationException("No database configured for QueryRepository.");
        this.connectionString = connectionString;
    }

    public async Task<ReadSessionsPlayerCountResponse> ReadSessionPlayerCount(string playerName)
    {
        using var connection = new SqlConnection(connectionString);

        var results = await connection.QueryMultipleAsync(
            "session.ReadSessionPlayerCount",
            new { PlayerName = playerName },
            commandType: System.Data.CommandType.StoredProcedure);

        var joinedSessions = await results.ReadAsync<SessionMetadata>();
        var otherSessions = await results.ReadAsync<SessionMetadata>();
        return new ReadSessionsPlayerCountResponse
        {
            PlayerHasJoinedSessions = joinedSessions.ToList(),
            AllOtherSessions = otherSessions.ToList()
        };
    }
}

public interface IQueryRespository
{
    Task<ReadSessionsPlayerCountResponse> ReadSessionPlayerCount(string playerName);
}