using System;
using System.IO;
using System.Threading.Tasks;
using CtrEditor.HydraulicSimulator.Python;
using CtrEditor.HydraulicSimulator.TSNet;
using CtrEditor.ObjetosSim;

namespace CtrEditor.HydraulicSimulator.Tests
{
    /// <summary>
    /// Pruebas de integración para TSNet
    /// </summary>
    public static class TSNetIntegrationTest
    {
        /// <summary>
        /// Ejecuta todas las pruebas de integración TSNet
        /// </summary>
        public static async Task<bool> RunAllTestsAsync()
        {
            Console.WriteLine("=== TSNet Integration Tests ===");
            
            bool allPassed = true;
            
            // Test 1: Inicialización de Python
            allPassed &= await TestPythonInitialization();
            
            // Test 2: Verificación de TSNet
            allPassed &= await TestTSNetAvailability();
            
            // Test 3: Ejecución de script básico
            allPassed &= await TestBasicScriptExecution();
            
            // Test 4: Creación de TSNetSimulationManager
            allPassed &= await TestTSNetSimulationManager();
            
            Console.WriteLine($"\n=== Tests Result: {(allPassed ? "PASSED" : "FAILED")} ===");
            return allPassed;
        }
        
        /// <summary>
        /// Test 1: Inicialización de Python
        /// </summary>
        private static async Task<bool> TestPythonInitialization()
        {
            try
            {
                Console.WriteLine("\n1. Testing Python Initialization...");
                
                // Verificar que los archivos existen
                var pythonDll = PythonInterop.PythonDll;
                Console.WriteLine($"   Python DLL path: {pythonDll}");
                
                if (!File.Exists(pythonDll))
                {
                    Console.WriteLine($"   ✗ Python DLL not found: {pythonDll}");
                    return false;
                }
                Console.WriteLine("   ✓ Python DLL found");
                
                // Inicializar Python
                var initialized = PythonInterop.Initialize();
                Console.WriteLine($"   Python initialized: {initialized}");
                
                if (initialized)
                {
                    Console.WriteLine("   ✓ Python initialization successful");
                    return true;
                }
                else
                {
                    Console.WriteLine("   ✗ Python initialization failed");
                    return false;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"   ✗ Exception in Python initialization: {ex.Message}");
                return false;
            }
        }
        
        /// <summary>
        /// Test 2: Verificación de TSNet
        /// </summary>
        private static async Task<bool> TestTSNetAvailability()
        {
            try
            {
                Console.WriteLine("\n2. Testing TSNet Availability...");
                
                var available = PythonInterop.IsTSNetAvailable();
                
                if (available)
                {
                    Console.WriteLine("   ✓ TSNet is available");
                    return true;
                }
                else
                {
                    Console.WriteLine("   ✗ TSNet is not available");
                    return false;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"   ✗ Exception checking TSNet: {ex.Message}");
                return false;
            }
        }
        
        /// <summary>
        /// Test 3: Ejecución de script básico
        /// </summary>
        private static async Task<bool> TestBasicScriptExecution()
        {
            try
            {
                Console.WriteLine("\n3. Testing Basic Script Execution...");
                
                var scriptPath = Path.Combine(
                    @"d:\Proyectos\VisualStudio\CtrEditor\HydraulicSimulator\TSNet",
                    "test_tsnet_integration.py"
                );
                
                Console.WriteLine($"   Script path: {scriptPath}");
                
                if (!File.Exists(scriptPath))
                {
                    Console.WriteLine($"   ✗ Test script not found: {scriptPath}");
                    return false;
                }
                
                var result = await PythonInterop.ExecuteScriptAsync(scriptPath);
                
                Console.WriteLine($"   Script execution result:");
                Console.WriteLine($"   Success: {result.Success}");
                Console.WriteLine($"   Exit code: {result.ExitCode}");
                
                if (!string.IsNullOrEmpty(result.Output))
                {
                    Console.WriteLine($"   Output: {result.Output.Substring(0, Math.Min(200, result.Output.Length))}...");
                }
                
                if (!string.IsNullOrEmpty(result.Error))
                {
                    Console.WriteLine($"   Error: {result.Error}");
                }
                
                if (result.Success)
                {
                    Console.WriteLine("   ✓ Script execution successful");
                    return true;
                }
                else
                {
                    Console.WriteLine("   ✗ Script execution failed");
                    return false;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"   ✗ Exception in script execution: {ex.Message}");
                return false;
            }
        }
        
        /// <summary>
        /// Test 4: Creación de TSNetSimulationManager
        /// </summary>
        private static async Task<bool> TestTSNetSimulationManager()
        {
            try
            {
                Console.WriteLine("\n4. Testing TSNetSimulationManager...");
                
                using var manager = new TSNetSimulationManager();
                
                Console.WriteLine($"   Working directory: {manager.WorkingDirectory}");
                Console.WriteLine($"   Configuration duration: {manager.Configuration.Duration}s");
                Console.WriteLine($"   Configuration time step: {manager.Configuration.TimeStep}s");
                
                // Verificar que el directorio de trabajo se crea
                if (Directory.Exists(manager.WorkingDirectory))
                {
                    Console.WriteLine("   ✓ Working directory created");
                }
                else
                {
                    Console.WriteLine("   ✗ Working directory not created");
                    return false;
                }
                
                Console.WriteLine("   ✓ TSNetSimulationManager created successfully");
                return true;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"   ✗ Exception creating TSNetSimulationManager: {ex.Message}");
                return false;
            }
        }
        
        /// <summary>
        /// Ejecuta un test específico de generación INP
        /// </summary>
        public static async Task<bool> TestINPGeneration()
        {
            try
            {
                Console.WriteLine("\n=== Testing INP Generation ===");
                
                using var manager = new TSNetSimulationManager();
                
                // Simular un tanque simple
                var mockTank = CreateMockTank();
                manager.RegisterHydraulicObject(mockTank);
                
                // Generar archivo INP
                var inpFile = await manager.GenerateINPFileAsync();
                
                if (File.Exists(inpFile))
                {
                    Console.WriteLine($"✓ INP file generated: {inpFile}");
                    
                    // Leer y mostrar parte del contenido
                    var content = await File.ReadAllTextAsync(inpFile);
                    var preview = content.Substring(0, Math.Min(500, content.Length));
                    Console.WriteLine($"INP Preview:\n{preview}...");
                    
                    return true;
                }
                else
                {
                    Console.WriteLine("✗ INP file not generated");
                    return false;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"✗ Exception in INP generation test: {ex.Message}");
                return false;
            }
        }
        
        /// <summary>
        /// Crea un tanque mock para pruebas
        /// </summary>
        private static osHydTank CreateMockTank()
        {
            return new osHydTank
            {
                Nombre = "TankTest",
                CrossSectionalArea = 1.0,
                MaxLevelM = 2.0,
                MinLevelM = 0.0,
                CurrentLevelM = 1.0,
                TankPressure = 1.013,
                IsFixedPressure = false
            };
        }
    }
}