using Microsoft.Data.SqlClient;
using Respawn;
using SIGCM2.Infrastructure.Persistence;

namespace SIGCM2.Application.Tests.Integration;

[Collection("Database")]
public class UsuarioRepositoryTests : IAsyncLifetime
{
    private const string ConnectionString =
        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";

    private SqlConnection _connection = null!;
    private Respawner _respawner = null!;
    private UsuarioRepository _repository = null!;

    public async Task InitializeAsync()
    {
        _connection = new SqlConnection(ConnectionString);
        await _connection.OpenAsync();

        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
        {
            DbAdapter = DbAdapter.SqlServer,
            // Rol is a lookup table seeded by migration V003 — never wipe or Usuario FK breaks.
            TablesToIgnore =
            [
                new Respawn.Graph.Table("dbo", "Rol"),
                new Respawn.Graph.Table("dbo", "Permiso"),
                new Respawn.Graph.Table("dbo", "RolPermiso"),
                // UDT-010: *_History tables are system-versioned — engine rejects direct DELETE.
                new Respawn.Graph.Table("dbo", "Usuario_History"),
                new Respawn.Graph.Table("dbo", "Rol_History"),
                new Respawn.Graph.Table("dbo", "Permiso_History"),
                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
                new Respawn.Graph.Table("dbo", "Medio_History"),
                new Respawn.Graph.Table("dbo", "Seccion_History"),
                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
                new Respawn.Graph.Table("dbo", "TipoDeIva"),
                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
                new Respawn.Graph.Table("dbo", "Rubro_History"),
            ]
        });

        // Reset DB, re-seed Rol canonical table (lookup) and admin user for each test class run.
        await _respawner.ResetAsync(_connection);
        await SeedRolCanonicalAsync();
        await SeedAdminAsync();

        var factory = new SqlConnectionFactory(ConnectionString);
        _repository = new UsuarioRepository(factory);
    }

    public async Task DisposeAsync()
    {
        await _respawner.ResetAsync(_connection);
        await _connection.CloseAsync();
        await _connection.DisposeAsync();
    }

    // Scenario: GetByUsername returns correct entity when user exists
    [Fact]
    public async Task GetByUsernameAsync_ExistingUser_ReturnsUsuario()
    {
        var usuario = await _repository.GetByUsernameAsync("admin");

        Assert.NotNull(usuario);
        Assert.Equal("admin", usuario.Username);
        Assert.Equal("admin", usuario.Rol);
        Assert.True(usuario.Activo);
        Assert.False(string.IsNullOrWhiteSpace(usuario.PasswordHash));
    }

    // Triangulation: GetByUsername returns null when user does not exist
    [Fact]
    public async Task GetByUsernameAsync_NonExistentUser_ReturnsNull()
    {
        var usuario = await _repository.GetByUsernameAsync("noexiste");
        Assert.Null(usuario);
    }

    // Triangulation: case-sensitive username lookup (SQL Server UNIQUE constraint is case-insensitive by default)
    [Fact]
    public async Task GetByUsernameAsync_DifferentUser_ReturnsCorrectUser_Cajero()
    {
        // Insert a second user with canonical rol 'cajero' (post-UDT-004 FK requires Rol.Codigo to exist).
        await _connection.ExecuteAsync(
            "INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson) " +
            "VALUES ('cajero1', '$2a$12$hash2', 'Juan', 'Pérez', 'cajero', '[]')");

        var admin = await _repository.GetByUsernameAsync("admin");
        var cajero = await _repository.GetByUsernameAsync("cajero1");

        Assert.NotNull(admin);
        Assert.NotNull(cajero);
        Assert.NotEqual(admin.Id, cajero.Id);
        Assert.Equal("admin", admin.Rol);
        Assert.Equal("cajero", cajero.Rol);
    }

    private async Task SeedRolCanonicalAsync()
    {
        const string sql = """
            SET QUOTED_IDENTIFIER ON;
            MERGE dbo.Rol AS t
            USING (VALUES
                ('admin', N'Administrador', N'Supervisor total'),
                ('cajero', N'Cajero', N'Mostrador contado'),
                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
                ('productor', N'Productor', N'Carga restringida'),
                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
                ('reportes', N'Reportes', N'Solo lectura reportes')
            ) AS s (Codigo, Nombre, Descripcion)
            ON t.Codigo = s.Codigo
            WHEN NOT MATCHED BY TARGET THEN
                INSERT (Codigo, Nombre, Descripcion, Activo)
                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
            """;
        await _connection.ExecuteAsync(sql);
    }

    private async Task SeedAdminAsync()
    {
        await _connection.ExecuteAsync(
            "SET QUOTED_IDENTIFIER ON; " +
            "IF NOT EXISTS (SELECT 1 FROM dbo.Usuario WHERE Username = 'admin') " +
            "INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo) " +
            "VALUES ('admin', '$2a$12$rmq6tlSAQ8WXhR2CwLCSeuwCJKz/.8Eab95UQCUNfwe4dokeOqMcW', " +
            "'Administrador', 'Sistema', 'admin', '[\"*\"]', 1)");
    }
}

// Dapper extension helper for IDbConnection
file static class DapperHelper
{
    public static async Task ExecuteAsync(this SqlConnection conn, string sql)
    {
        using var cmd = conn.CreateCommand();
        cmd.CommandText = sql;
        await cmd.ExecuteNonQueryAsync();
    }
}