using System.Net;
using System.Net.Http.Json;
using FluentAssertions;
using Xunit;

namespace ColaFlow.IntegrationTests.API;

/// <summary>
/// Example API Integration Test for Projects Controller
/// Based on M1-Architecture-Design.md Section 8.3
/// </summary>
/// <remarks>
/// To use this test, you need to:
/// 1. Implement ColaFlowWebApplicationFactory with your Program and DbContext types
/// 2. Implement actual API endpoints
/// 3. Implement DTOs
/// </remarks>
public class ProjectsApiTests // : IClassFixture<ColaFlowWebApplicationFactory<Program, ColaFlowDbContext>>
{
    // private readonly HttpClient _client;
    // private readonly ColaFlowWebApplicationFactory<Program, ColaFlowDbContext> _factory;

    // public ProjectsApiTests(ColaFlowWebApplicationFactory<Program, ColaFlowDbContext> factory)
    // {
    //     _factory = factory;
    //     _client = factory.CreateClient();
    // }

    [Fact]
    public async Task GetProjects_ReturnsSuccessStatusCode()
    {
        // Arrange
        // No setup needed

        // Act
        // var response = await _client.GetAsync("/api/v1/projects");

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.OK);

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task CreateProject_ValidData_ReturnsCreated()
    {
        // Arrange
        // var createRequest = new CreateProjectDto
        // {
        //     Name = "Test Project",
        //     Description = "Test Description",
        //     Key = "TEST"
        // };

        // Act
        // var response = await _client.PostAsJsonAsync("/api/v1/projects", createRequest);

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.Created);
        // var project = await response.Content.ReadFromJsonAsync<ProjectDto>();
        // project.Should().NotBeNull();
        // project!.Name.Should().Be("Test Project");
        // project.Key.Should().Be("TEST");

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task CreateProject_DuplicateKey_ReturnsBadRequest()
    {
        // Arrange
        // using var scope = _factory.CreateScope();
        // var dbContext = _factory.GetDbContext(scope);

        // Seed existing project with key "TEST"
        // var existingProject = Project.Create("Existing", "Description", "TEST", UserId.Create(Guid.NewGuid()));
        // await dbContext.Projects.AddAsync(existingProject);
        // await dbContext.SaveChangesAsync();

        // var createRequest = new CreateProjectDto
        // {
        //     Name = "New Project",
        //     Description = "Description",
        //     Key = "TEST" // Duplicate key
        // };

        // Act
        // var response = await _client.PostAsJsonAsync("/api/v1/projects", createRequest);

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.BadRequest);

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task GetProject_ExistingId_ReturnsProject()
    {
        // Arrange
        // using var scope = _factory.CreateScope();
        // var dbContext = _factory.GetDbContext(scope);

        // Seed test project
        // var project = Project.Create("Test Project", "Description", "TEST", UserId.Create(Guid.NewGuid()));
        // await dbContext.Projects.AddAsync(project);
        // await dbContext.SaveChangesAsync();

        // Act
        // var response = await _client.GetAsync($"/api/v1/projects/{project.Id.Value}");

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.OK);
        // var returnedProject = await response.Content.ReadFromJsonAsync<ProjectDto>();
        // returnedProject.Should().NotBeNull();
        // returnedProject!.Name.Should().Be("Test Project");

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task GetProject_NonExistingId_ReturnsNotFound()
    {
        // Arrange
        // var nonExistingId = Guid.NewGuid();

        // Act
        // var response = await _client.GetAsync($"/api/v1/projects/{nonExistingId}");

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.NotFound);

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task UpdateProject_ValidData_ReturnsUpdated()
    {
        // Arrange
        // using var scope = _factory.CreateScope();
        // var dbContext = _factory.GetDbContext(scope);

        // Seed test project
        // var project = Project.Create("Original", "Description", "TEST", UserId.Create(Guid.NewGuid()));
        // await dbContext.Projects.AddAsync(project);
        // await dbContext.SaveChangesAsync();

        // var updateRequest = new UpdateProjectDto
        // {
        //     Name = "Updated Project",
        //     Description = "Updated Description"
        // };

        // Act
        // var response = await _client.PutAsJsonAsync($"/api/v1/projects/{project.Id.Value}", updateRequest);

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.OK);
        // var updatedProject = await response.Content.ReadFromJsonAsync<ProjectDto>();
        // updatedProject.Should().NotBeNull();
        // updatedProject!.Name.Should().Be("Updated Project");

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task DeleteProject_ExistingId_ReturnsNoContent()
    {
        // Arrange
        // using var scope = _factory.CreateScope();
        // var dbContext = _factory.GetDbContext(scope);

        // Seed test project
        // var project = Project.Create("Test", "Description", "TEST", UserId.Create(Guid.NewGuid()));
        // await dbContext.Projects.AddAsync(project);
        // await dbContext.SaveChangesAsync();

        // Act
        // var response = await _client.DeleteAsync($"/api/v1/projects/{project.Id.Value}");

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.NoContent);

        // Verify soft delete
        // var deletedProject = await dbContext.Projects.FindAsync(project.Id);
        // deletedProject.Should().BeNull(); // Filtered by global query filter

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }

    [Fact]
    public async Task GetKanbanBoard_ExistingProject_ReturnsBoard()
    {
        // Arrange
        // using var scope = _factory.CreateScope();
        // var dbContext = _factory.GetDbContext(scope);

        // Seed test project with tasks
        // var project = Project.Create("Test", "Description", "TEST", UserId.Create(Guid.NewGuid()));
        // var epic = project.CreateEpic("Epic 1", "Description", UserId.Create(Guid.NewGuid()));
        // var story = epic.CreateStory("Story 1", "Description", TaskPriority.High, UserId.Create(Guid.NewGuid()));
        // story.CreateTask("Task 1", "Description", TaskPriority.Medium, UserId.Create(Guid.NewGuid()));

        // await dbContext.Projects.AddAsync(project);
        // await dbContext.SaveChangesAsync();

        // Act
        // var response = await _client.GetAsync($"/api/v1/projects/{project.Id.Value}/kanban");

        // Assert
        // TODO: Uncomment after API is implemented
        // response.StatusCode.Should().Be(HttpStatusCode.OK);
        // var kanban = await response.Content.ReadFromJsonAsync<KanbanBoardDto>();
        // kanban.Should().NotBeNull();
        // kanban!.Columns.Should().HaveCount(4); // To Do, In Progress, Review, Done

        // Placeholder assertion for template
        await Task.CompletedTask;
        true.Should().BeTrue("This is a placeholder test");
    }
}