using System.Net;
using System.Net.Http.Headers;
using System.Net.Http.Json;
using System.Text.Json;
using Dapper;
using Microsoft.Data.SqlClient;
using SIGCM2.TestSupport;

namespace SIGCM2.Api.Tests.Usuarios;

/// <summary>
/// Integration tests for GET /api/v1/users/{id} (UDT-008 B3).
/// </summary>
[Collection("ApiIntegration")]
public sealed class GetUsuarioByIdEndpointTests : IAsyncLifetime
{
    private const string TestConnectionString =
        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";

    private readonly HttpClient _client;
    private readonly SqlTestFixture _db;

    public GetUsuarioByIdEndpointTests(TestWebAppFactory factory)
    {
        _client = factory.CreateClient();
        _db = new SqlTestFixture(TestConnectionString);
    }

    public async Task InitializeAsync() => await _db.InitializeAsync();
    public async Task DisposeAsync() => await _db.DisposeAsync();

    private async Task<string> GetAdminTokenAsync()
    {
        var response = await _client.PostAsJsonAsync("/api/v1/auth/login",
            new { username = "admin", password = "@Diego550@" });
        response.EnsureSuccessStatusCode();
        var json = await response.Content.ReadFromJsonAsync<JsonElement>();
        return json.GetProperty("accessToken").GetString()!;
    }

    private async Task<int> GetAdminIdAsync()
    {
        await using var conn = new SqlConnection(TestConnectionString);
        await conn.OpenAsync();
        return await conn.ExecuteScalarAsync<int>("SELECT Id FROM dbo.Usuario WHERE Username = 'admin'");
    }

    private async Task<string> GetCajeroTokenAsync()
    {
        await using var conn = new SqlConnection(TestConnectionString);
        await conn.OpenAsync();
        await conn.ExecuteAsync("""
            IF NOT EXISTS (SELECT 1 FROM dbo.Usuario WHERE Username = 'cajero_getbyid')
            INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
            VALUES ('cajero_getbyid', '$2a$12$rmq6tlSAQ8WXhR2CwLCSeuwCJKz/.8Eab95UQCUNfwe4dokeOqMcW', 'Cajero', 'Test', 'cajero', '[]', 1, 0)
            """);

        var response = await _client.PostAsJsonAsync("/api/v1/auth/login",
            new { username = "cajero_getbyid", password = "@Diego550@" });
        response.EnsureSuccessStatusCode();
        var json = await response.Content.ReadFromJsonAsync<JsonElement>();
        return json.GetProperty("accessToken").GetString()!;
    }

    [Fact]
    public async Task GET_Users_Id_200_Returns_Detail_Shape()
    {
        var token = await GetAdminTokenAsync();
        var adminId = await GetAdminIdAsync();
        var request = new HttpRequestMessage(HttpMethod.Get, $"/api/v1/users/{adminId}");
        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);

        var response = await _client.SendAsync(request);

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var json = await response.Content.ReadFromJsonAsync<JsonElement>();
        Assert.Equal(adminId, json.GetProperty("id").GetInt32());
        Assert.Equal("admin", json.GetProperty("username").GetString());
        Assert.True(json.TryGetProperty("nombre", out _));
        Assert.True(json.TryGetProperty("rol", out _));
        Assert.True(json.TryGetProperty("activo", out _));
        Assert.True(json.TryGetProperty("mustChangePassword", out _));
    }

    [Fact]
    public async Task GET_Users_Id_DoesNotContain_PasswordHash_In_Response()
    {
        var token = await GetAdminTokenAsync();
        var adminId = await GetAdminIdAsync();
        var request = new HttpRequestMessage(HttpMethod.Get, $"/api/v1/users/{adminId}");
        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);

        var response = await _client.SendAsync(request);

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var rawJson = await response.Content.ReadAsStringAsync();
        Assert.DoesNotContain("passwordHash", rawJson, StringComparison.OrdinalIgnoreCase);
        Assert.DoesNotContain("permisosJson", rawJson, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public async Task GET_Users_Id_9999_Returns_404()
    {
        var token = await GetAdminTokenAsync();
        var request = new HttpRequestMessage(HttpMethod.Get, "/api/v1/users/9999");
        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);

        var response = await _client.SendAsync(request);

        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public async Task GET_Users_Id_No_Auth_Returns_401()
    {
        var response = await _client.GetAsync("/api/v1/users/1");
        Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
    }

    [Fact]
    public async Task GET_Users_Id_No_Permission_Returns_403()
    {
        var token = await GetCajeroTokenAsync();
        var request = new HttpRequestMessage(HttpMethod.Get, "/api/v1/users/1");
        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);

        var response = await _client.SendAsync(request);

        Assert.Equal(HttpStatusCode.Forbidden, response.StatusCode);
    }
}