using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using ColaFlow.Modules.Identity.Infrastructure.Persistence;
using ColaFlow.Modules.IssueManagement.Infrastructure.Persistence;
using ColaFlow.Modules.ProjectManagement.Infrastructure.Persistence;

namespace ColaFlow.Modules.ProjectManagement.IntegrationTests.Infrastructure;

/// <summary>
/// Custom WebApplicationFactory for ProjectManagement Integration Tests
/// Supports In-Memory database for fast, isolated tests
/// </summary>
public class PMWebApplicationFactory : WebApplicationFactory<Program>
{
    private readonly string _testDatabaseName = $"PMTestDb_{Guid.NewGuid()}";

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        // Set environment to Testing
        builder.UseEnvironment("Testing");

        // Configure test-specific settings
        builder.ConfigureAppConfiguration((context, config) =>
        {
            // Clear existing connection strings to prevent PostgreSQL registration
            config.Sources.Clear();

            // Add minimal config for testing
            config.AddInMemoryCollection(new Dictionary<string, string?>
            {
                ["ConnectionStrings:DefaultConnection"] = "",
                ["ConnectionStrings:PMDatabase"] = "",
                ["ConnectionStrings:IMDatabase"] = "",
                ["Jwt:SecretKey"] = "test-secret-key-for-integration-tests-minimum-32-characters",
                ["Jwt:Issuer"] = "ColaFlow.Test",
                ["Jwt:Audience"] = "ColaFlow.Test",
                ["Jwt:AccessTokenExpirationMinutes"] = "15",
                ["Jwt:RefreshTokenExpirationDays"] = "7"
            });
        });

        builder.ConfigureServices(services =>
        {
            // Remove existing DbContext registrations
            var descriptorsToRemove = services.Where(d =>
                d.ServiceType == typeof(DbContextOptions<IdentityDbContext>) ||
                d.ServiceType == typeof(DbContextOptions<PMDbContext>) ||
                d.ServiceType == typeof(DbContextOptions<IssueManagementDbContext>))
                .ToList();

            foreach (var descriptor in descriptorsToRemove)
            {
                services.Remove(descriptor);
            }

            // Register test databases with In-Memory provider
            // Use the same database name for cross-context data consistency
            services.AddDbContext<IdentityDbContext>(options =>
            {
                options.UseInMemoryDatabase(_testDatabaseName);
                options.EnableSensitiveDataLogging();
            });

            services.AddDbContext<PMDbContext>(options =>
            {
                options.UseInMemoryDatabase(_testDatabaseName);
                options.EnableSensitiveDataLogging();
            });

            services.AddDbContext<IssueManagementDbContext>(options =>
            {
                options.UseInMemoryDatabase(_testDatabaseName);
                options.EnableSensitiveDataLogging();
            });
        });
    }

    protected override IHost CreateHost(IHostBuilder builder)
    {
        var host = base.CreateHost(builder);

        // Initialize databases after host is created
        using var scope = host.Services.CreateScope();
        var services = scope.ServiceProvider;

        try
        {
            // Initialize Identity database
            var identityDb = services.GetRequiredService<IdentityDbContext>();
            identityDb.Database.EnsureCreated();

            // Initialize ProjectManagement database
            var pmDb = services.GetRequiredService<PMDbContext>();
            pmDb.Database.EnsureCreated();

            // Initialize IssueManagement database
            var imDb = services.GetRequiredService<IssueManagementDbContext>();
            imDb.Database.EnsureCreated();
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error initializing test database: {ex.Message}");
            throw;
        }

        return host;
    }
}
