using System;
using System.Linq;
using GeViSetEditor.Core.Parsers;
using GeViSetEditor.Core.Models;
using GeViSetEditor.CLI.Commands;

namespace GeViSetEditor.CLI
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("=== GeViSet Configuration Editor ===\n");

            if (args.Length == 0)
            {
                ShowHelp();
                return;
            }

            string command = args[0].ToLower();

            try
            {
                switch (command)
                {
                    case "view":
                    case "parse":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor view <input.set>");
                            return;
                        }
                        ViewSetFile(args[1]);
                        break;

                    case "export":
                        if (args.Length < 3)
                        {
                            Console.WriteLine("Usage: GeViSetEditor export <input.set> <output.xlsx>");
                            return;
                        }
                        ExportToExcel(args[1], args[2]);
                        break;

                    case "import":
                        if (args.Length < 3)
                        {
                            Console.WriteLine("Usage: GeViSetEditor import <input.xlsx> <output.set>");
                            return;
                        }
                        ImportFromExcel(args[1], args[2]);
                        break;

                    case "test-roundtrip":
                    case "test":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor test-roundtrip <input.set>");
                            return;
                        }
                        TestRoundTripCommand.Execute(args[1]);
                        break;

                    case "parse-complete":
                    case "full":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor parse-complete <input.set> [output.json]");
                            return;
                        }
                        string jsonOutput = args.Length >= 3 ? args[2] : null;
                        ParseCompleteCommand.Execute(args[1], jsonOutput);
                        break;

                    case "to-json":
                    case "json":
                        if (args.Length < 3)
                        {
                            Console.WriteLine("Usage: GeViSetEditor to-json <input.set> <output.json>");
                            return;
                        }
                        ExportJsonCommand.Execute(args[1], args[2]);
                        break;

                    case "enhanced":
                    case "full-parse":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor enhanced <input.set> [output.json]");
                            return;
                        }
                        string enhancedOutput = args.Length >= 3 ? args[2] : null;
                        EnhancedParseCommand.Execute(args[1], enhancedOutput);
                        break;

                    case "analyze":
                    case "inspect":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor analyze <input.set> [report.json]");
                            return;
                        }
                        string reportOutput = args.Length >= 3 ? args[2] : null;
                        AnalyzeStructureCommand.Execute(args[1], reportOutput);
                        break;

                    case "comprehensive":
                    case "all":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor comprehensive <input.set> [output.json]");
                            return;
                        }
                        string comprehensiveOutput = args.Length >= 3 ? args[2] : null;
                        ComprehensiveParseCommand.Execute(args[1], comprehensiveOutput);
                        break;

                    case "modify":
                    case "edit":
                        if (args.Length < 2)
                        {
                            Console.WriteLine("Usage: GeViSetEditor modify <input.set> [output.set]");
                            return;
                        }
                        string modifyOutput = args.Length >= 3 ? args[2] : null;
                        ModifyConfigCommand.Execute(args[1], modifyOutput);
                        break;

                    default:
                        Console.WriteLine($"Unknown command: {command}");
                        ShowHelp();
                        break;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"\n❌ Error: {ex.Message}");
                Console.WriteLine($"\nStack trace:\n{ex.StackTrace}");
            }
        }

        static void ShowHelp()
        {
            Console.WriteLine("Commands:");
            Console.WriteLine("  view <input.set>                      - View configuration and action mappings");
            Console.WriteLine("  test-roundtrip <input.set>            - Test read/write safety (IMPORTANT!)");
            Console.WriteLine("  comprehensive <input.set> [out.json]  - Parse ALL config data (19K+ nodes)");
            Console.WriteLine("  modify <input.set> [output.set]       - Test edit/add/delete operations");
            Console.WriteLine("  to-json <input.set> <output.json>     - Export action mappings to JSON");
            Console.WriteLine("  export <input.set> <output.xlsx>      - Export to Excel for editing");
            Console.WriteLine("  import <input.xlsx> <output.set>      - Import from Excel to .set file");
            Console.WriteLine("\nExamples:");
            Console.WriteLine("  GeViSetEditor test-roundtrip TestMKS.set");
            Console.WriteLine("  GeViSetEditor enhanced TestMKS.set full_config.json");
            Console.WriteLine("  GeViSetEditor to-json TestMKS.set mappings.json");
            Console.WriteLine("  GeViSetEditor view TestMKS.set");
            Console.WriteLine("  GeViSetEditor export TestMKS.set mappings.xlsx");
        }

        static void ViewSetFile(string inputPath)
        {
            Console.WriteLine($"Parsing: {inputPath}\n");

            var parser = new SetFileParser();
            var config = parser.Parse(inputPath);

            Console.WriteLine("\n" + new string('=', 70));
            Console.WriteLine("CONFIGURATION SUMMARY");
            Console.WriteLine(new string('=', 70) + "\n");

            int totalRules = 0;
            int totalVariations = 0;

            foreach (var section in config.Sections)
            {
                if (section.Rules.Count > 0)
                {
                    Console.WriteLine($"\n{section.Name}:");
                    Console.WriteLine(new string('-', 50));

                    foreach (var rule in section.Rules)
                    {
                        totalRules++;
                        totalVariations += rule.ActionVariations.Count;

                        Console.WriteLine($"\n  Rule #{rule.RuleId}:");

                        // Show triggers
                        var activeTriggers = rule.TriggerProperties.Where(kv => kv.Value).ToList();
                        if (activeTriggers.Any())
                        {
                            Console.WriteLine($"    Triggers: {string.Join(", ", activeTriggers.Select(t => t.Key))}");
                        }

                        // Show main action
                        if (!string.IsNullOrEmpty(rule.MainAction))
                        {
                            Console.WriteLine($"    Action: {rule.MainAction}");
                        }

                        // Show variations
                        if (rule.ActionVariations.Count > 0)
                        {
                            Console.WriteLine($"    Variations ({rule.ActionVariations.Count}):");
                            foreach (var variation in rule.ActionVariations)
                            {
                                Console.WriteLine($"      [{variation.VariationId}] {variation.ActionString}");
                                if (!string.IsNullOrEmpty(variation.ActionType))
                                {
                                    Console.WriteLine($"          Type: {variation.ActionType}");
                                }
                                if (!string.IsNullOrEmpty(variation.FullCommand))
                                {
                                    Console.WriteLine($"          Command: {variation.FullCommand}");
                                }
                                if (!string.IsNullOrEmpty(variation.ServerName))
                                {
                                    Console.WriteLine($"          Server: {variation.ServerName}");
                                }
                            }
                        }
                    }
                }
            }

            Console.WriteLine("\n" + new string('=', 70));
            Console.WriteLine($"Total: {totalRules} rules, {totalVariations} variations");
            Console.WriteLine(new string('=', 70));
        }

        static void ExportToExcel(string inputPath, string outputPath)
        {
            Console.WriteLine("Excel export not yet implemented.");
            Console.WriteLine("Will be added in next step with EPPlus library.");
        }

        static void ImportFromExcel(string inputPath, string outputPath)
        {
            Console.WriteLine("Excel import not yet implemented.");
            Console.WriteLine("Will be added after export functionality.");
        }
    }
}