using DramaLing.Api.Tests.Integration.Fixtures;
using System.Net;
using System.Net.Http.Json;
using System.Text.Json;

namespace DramaLing.Api.Tests.Integration.Controllers;

/// <summary>
/// AuthController 整合測試
/// 測試用戶認證相關的 API 端點功能
/// </summary>
public class AuthControllerTests : IntegrationTestBase
{
    public AuthControllerTests(DramaLingWebApplicationFactory factory) : base(factory)
    {
    }

    [Fact]
    public async Task Register_WithValidData_ShouldCreateUser()
    {
        // Arrange
        var registerData = new
        {
            username = "newuser",
            email = "newuser@example.com",
            password = "password123",
            displayName = "New Test User"
        };

        // Act
        var response = await HttpClient.PostAsJsonAsync("/api/auth/register", registerData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");
        content.Should().Contain("token");
    }

    [Fact]
    public async Task Register_WithDuplicateEmail_ShouldReturn400()
    {
        // Arrange - 使用已存在的測試用戶 email
        var registerData = new
        {
            username = "duplicateuser",
            email = "test1@example.com", // 已存在的 email
            password = "password123",
            displayName = "Duplicate User"
        };

        // Act
        var response = await HttpClient.PostAsJsonAsync("/api/auth/register", registerData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("error");
    }

    [Fact]
    public async Task Login_WithValidCredentials_ShouldReturnToken()
    {
        // Arrange
        var loginData = new
        {
            email = "test1@example.com",
            password = "password123" // 對應 TestDataSeeder 中的密碼
        };

        // Act
        var response = await HttpClient.PostAsJsonAsync("/api/auth/login", loginData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");
        content.Should().Contain("token");

        // 驗證 JWT Token 格式
        var jsonResponse = JsonSerializer.Deserialize<JsonElement>(content);
        if (jsonResponse.TryGetProperty("data", out var data) &&
            data.TryGetProperty("token", out var tokenElement))
        {
            var token = tokenElement.GetString();
            token.Should().NotBeNullOrEmpty();
            token.Should().StartWith("eyJ"); // JWT Token 格式
        }
    }

    [Fact]
    public async Task Login_WithInvalidCredentials_ShouldReturn401()
    {
        // Arrange
        var loginData = new
        {
            email = "test1@example.com",
            password = "wrongpassword"
        };

        // Act
        var response = await HttpClient.PostAsJsonAsync("/api/auth/login", loginData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("error");
    }

    [Fact]
    public async Task GetProfile_WithValidAuth_ShouldReturnUserProfile()
    {
        // Arrange
        var client = CreateTestUser1Client();

        // Act
        var response = await client.GetAsync("/api/auth/profile");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("Test User 1");
        content.Should().Contain("testuser1");
        content.Should().Contain("test1@example.com");
    }

    [Fact]
    public async Task GetProfile_WithoutAuth_ShouldReturn401()
    {
        // Arrange
        var client = HttpClient; // 未認證

        // Act
        var response = await client.GetAsync("/api/auth/profile");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
    }

    [Fact]
    public async Task UpdateProfile_WithValidAuth_ShouldUpdateSuccessfully()
    {
        // Arrange
        var client = CreateTestUser1Client();
        var updateData = new
        {
            displayName = "Updated Display Name",
            bio = "Updated bio information"
        };

        // Act
        var response = await client.PutAsJsonAsync("/api/auth/profile", updateData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");

        // 驗證更新是否生效
        var profileResponse = await client.GetAsync("/api/auth/profile");
        var profileContent = await profileResponse.Content.ReadAsStringAsync();
        profileContent.Should().Contain("Updated Display Name");
    }

    [Fact]
    public async Task GetSettings_WithValidAuth_ShouldReturnSettings()
    {
        // Arrange
        var client = CreateTestUser1Client();

        // Act
        var response = await client.GetAsync("/api/auth/settings");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");
    }

    [Fact]
    public async Task UpdateSettings_WithValidAuth_ShouldUpdateSuccessfully()
    {
        // Arrange
        var client = CreateTestUser1Client();
        var settingsData = new
        {
            language = "zh-TW",
            theme = "dark",
            notifications = true
        };

        // Act
        var response = await client.PutAsJsonAsync("/api/auth/settings", settingsData);

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");
    }

    [Fact]
    public async Task GetStatus_ShouldReturnUserStatus()
    {
        // Arrange
        var client = CreateTestUser1Client();

        // Act
        var response = await client.GetAsync("/api/auth/status");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("success");
    }
}