using LibGit2Sharp;
using MarketAlly.AIPlugin;
using MarketAlly.AIPlugin.Analysis;
using MarketAlly.AIPlugin.Analysis.Plugins;
using MarketAlly.AIPlugin.Learning;
using MarketAlly.AIPlugin.Learning.Configuration;
using MarketAlly.AIPlugin.Learning.Exceptions;
using MarketAlly.AIPlugin.Learning.Services;
using MarketAlly.AIPlugin.Refactoring.Plugins;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using RefactorIQ.Services;
using RefactorIQ.Core;
using RefactorIQ.Persistence.Services;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Security.Cryptography.Xml;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Signature = LibGit2Sharp.Signature;
using LogLevel = Microsoft.Extensions.Logging.LogLevel;

namespace MarketAlly.AIPlugin.Learning
{
	[AIPlugin("ComprehensiveLearningRefactor", "Complete self-learning refactoring system with ModularMap, RefactorIQ, Git safety, and warnings analysis")]
	public class ComprehensiveLearningRefactorPlugin : IAIPlugin, IDisposable
	{
		[AIParameter("Solution path to analyze and improve", required: true)]
		public string SolutionPath { get; set; }

		[AIParameter("Reports output directory", required: false)]
		public string ReportsDirectory { get; set; } = "Reports";

		[AIParameter("Maximum learning iterations per session", required: false)]
		public int MaxIterations { get; set; } = 20;

		[AIParameter("Maximum attempts per file before giving up", required: false)]
		public int MaxAttemptsPerFile { get; set; } = 3;

		[AIParameter("Session timeout in minutes", required: false)]
		public int SessionTimeoutMinutes { get; set; } = 60;

		[AIParameter("Verbose reporting (detailed vs summary)", required: false)]
		public bool VerboseReporting { get; set; } = false;

		[AIParameter("Learning mode: conservative, moderate, aggressive", required: false)]
		public string LearningMode { get; set; } = "conservative";

		[AIParameter("Skip warnings analysis", required: false)]
		public bool SkipWarningsAnalysis { get; set; } = false;

		[AIParameter("Configuration file path for RefactorIQ", required: false)]
		public string ConfigPath { get; set; }

		[AIParameter("Enable AI embeddings generation", required: false)]
		public bool EnableAIEmbeddings { get; set; } = false;

		[AIParameter("Enable semantic code search", required: false)]
		public bool EnableSemanticSearch { get; set; } = false;

		[AIParameter("OpenAI API key for embeddings", required: false)]
		public string OpenAIApiKey { get; set; }

		public IReadOnlyDictionary<string, Type> SupportedParameters => new Dictionary<string, Type>
		{
			["solutionPath"] = typeof(string),
			["reportsDirectory"] = typeof(string),
			["maxIterations"] = typeof(int),
			["maxAttemptsPerFile"] = typeof(int),
			["sessionTimeoutMinutes"] = typeof(int),
			["verboseReporting"] = typeof(bool),
			["learningMode"] = typeof(string),
			["skipWarningsAnalysis"] = typeof(bool),
			["configPath"] = typeof(string),
			["enableAIEmbeddings"] = typeof(bool),
			["enableSemanticSearch"] = typeof(bool),
			["openAIApiKey"] = typeof(string)
		};

		private IServiceProvider? _serviceProvider;
		private bool _disposed = false;

		public async Task<AIPluginResult> ExecuteAsync(IReadOnlyDictionary<string, object> parameters)
		{
			try
			{
				// Build service provider with proper configuration
				_serviceProvider = BuildServiceProvider(parameters);
				
				var session = new ComprehensiveLearningSession
				{
					SessionId = Guid.NewGuid(),
					SolutionPath = parameters["solutionPath"].ToString(),
					ReportsDirectory = parameters.GetValueOrDefault("reportsDirectory", "Reports").ToString(),
					MaxIterations = Convert.ToInt32(parameters.GetValueOrDefault("maxIterations", 20)),
					MaxAttemptsPerFile = Convert.ToInt32(parameters.GetValueOrDefault("maxAttemptsPerFile", 3)),
					SessionTimeoutMinutes = Convert.ToInt32(parameters.GetValueOrDefault("sessionTimeoutMinutes", 60)),
					VerboseReporting = Convert.ToBoolean(parameters.GetValueOrDefault("verboseReporting", false)),
					LearningMode = parameters.GetValueOrDefault("learningMode", "conservative").ToString(),
					SkipWarningsAnalysis = Convert.ToBoolean(parameters.GetValueOrDefault("skipWarningsAnalysis", false)),
					ConfigPath = parameters.GetValueOrDefault("configPath", null)?.ToString(),
					EnableAIEmbeddings = Convert.ToBoolean(parameters.GetValueOrDefault("enableAIEmbeddings", false)),
					EnableSemanticSearch = Convert.ToBoolean(parameters.GetValueOrDefault("enableSemanticSearch", false)),
					OpenAIApiKey = parameters.GetValueOrDefault("openAIApiKey", null)?.ToString(),
					StartTime = DateTime.UtcNow
				};

				// Use the new orchestrator service
				using var orchestrator = _serviceProvider.GetRequiredService<ILearningOrchestrator>();
				var result = await orchestrator.ExecuteCompleteLearningSessionAsync(session);

				return new AIPluginResult(result, "Comprehensive learning session completed");
			}
			catch (LearningException ex)
			{
				return new AIPluginResult(ex, $"Learning operation failed: {ex.Message}");
			}
			catch (Exception ex)
			{
				return new AIPluginResult(ex, $"Comprehensive learning session failed: {ex.Message}");
			}
		}

		private IServiceProvider BuildServiceProvider(IReadOnlyDictionary<string, object> parameters)
		{
			var services = new ServiceCollection();

			// Configuration
			var configuration = new ConfigurationBuilder()
				.AddInMemoryCollection(new Dictionary<string, string?>
				{
					["Learning:Git:BranchPrefix"] = "ai-refactoring",
					["Learning:Git:CommitterName"] = "AI Learning System",
					["Learning:Git:CommitterEmail"] = "ai@learning.system",
					["Learning:LearningModes:Conservative:MaxIterations"] = "10",
					["Learning:LearningModes:Moderate:MaxIterations"] = "20",
					["Learning:LearningModes:Aggressive:MaxIterations"] = "50",
					["Learning:AI:EnableSemanticSearch"] = parameters.GetValueOrDefault("enableSemanticSearch", false).ToString(),
					["Learning:AI:MaxSearchResults"] = "10",
					["Learning:AI:MinSimilarityScore"] = "0.7"
				})
				.Build();

			services.AddSingleton<IConfiguration>(configuration);
			services.Configure<LearningConfiguration>(configuration.GetSection(LearningConfiguration.SectionName));

			// Logging
			services.AddLogging(builder => builder.AddConsole().SetMinimumLevel(LogLevel.Information));

			// Core services
			services.AddSingleton<ISecurityService, SecurityService>();
			services.AddSingleton<ILLMContextService, LLMContextService>();
			services.AddSingleton<IUnifiedContextService, UnifiedContextService>();
			services.AddTransient<ILearningOrchestrator, LearningOrchestrator>();

			// Legacy services (temporarily until fully migrated)
			services.AddTransient<GitManager>(provider => new GitManager(parameters["solutionPath"].ToString()));
			services.AddTransient<CompilationManager>();
			services.AddTransient<ReportsManager>(provider => new ReportsManager(parameters.GetValueOrDefault("reportsDirectory", "Reports").ToString()));
			services.AddTransient<RefactorIQIntegration>(provider => new RefactorIQIntegration(parameters.GetValueOrDefault("configPath", null)?.ToString()));

			// RefactorIQ services (would need proper implementation)
			// services.AddSingleton<IRefactorIQClient, RefactorIQClient>();

			return services.BuildServiceProvider();
		}

		public void Dispose()
		{
			Dispose(true);
			GC.SuppressFinalize(this);
		}

		protected virtual void Dispose(bool disposing)
		{
			if (!_disposed && disposing)
			{
				if (_serviceProvider is IDisposable disposableProvider)
				{
					disposableProvider.Dispose();
				}
			}
			_disposed = true;
		}
	}
}