using Dapper;
using SIGCM.Domain.Entities;
using SIGCM.Infrastructure.Data;

namespace SIGCM.Infrastructure.Repositories;

public class ClientRepository
{
  private readonly IDbConnectionFactory _db;

  public ClientRepository(IDbConnectionFactory db)
  {
    _db = db;
  }

  // Búsqueda inteligente por Nombre O DNI
  public async Task<IEnumerable<Client>> SearchAsync(string query)
  {
    using var conn = _db.CreateConnection();
    var sql = @"
            SELECT TOP 10 * FROM Clients 
            WHERE Name LIKE @Query OR DniOrCuit LIKE @Query
            ORDER BY Name";
    return await conn.QueryAsync<Client>(sql, new { Query = $"%{query}%" });
  }

  // Buscar o Crear (Upsert) al guardar el aviso
  public async Task<int> EnsureClientExistsAsync(string name, string dni)
  {
    using var conn = _db.CreateConnection();

    // 1. Buscamos por DNI/CUIT (es el identificador único más fiable)
    var existingId = await conn.ExecuteScalarAsync<int?>(
        "SELECT Id FROM Clients WHERE DniOrCuit = @Dni", new { Dni = dni });

    if (existingId.HasValue)
    {
      // Opcional: Actualizar nombre si cambió
      await conn.ExecuteAsync("UPDATE Clients SET Name = @Name WHERE Id = @Id", new { Name = name, Id = existingId });
      return existingId.Value;
    }
    else
    {
      // Crear nuevo
      var sql = @"
                INSERT INTO Clients (Name, DniOrCuit) VALUES (@Name, @Dni);
                SELECT CAST(SCOPE_IDENTITY() as int);";
      return await conn.QuerySingleAsync<int>(sql, new { Name = name, Dni = dni });
    }
  }

  public async Task<IEnumerable<dynamic>> GetAllWithStatsAsync()
  {
    using var conn = _db.CreateConnection();
    var sql = @"
        SELECT c.*, 
               (SELECT COUNT(1) FROM Listings l WHERE l.ClientId = c.Id) as TotalAds,
               (SELECT SUM(AdFee) FROM Listings l WHERE l.ClientId = c.Id) as TotalSpent
        FROM Clients c
        ORDER BY c.Name";
    return await conn.QueryAsync(sql);
  }

  public async Task<IEnumerable<Listing>> GetClientHistoryAsync(int clientId)
  {
    using var conn = _db.CreateConnection();
    return await conn.QueryAsync<Listing>(
        "SELECT * FROM Listings WHERE ClientId = @Id ORDER BY CreatedAt DESC",
        new { Id = clientId });
  }
}