using System;
using System.IO;
using System.Linq;
using System.Text.Json;
using GeViSetEditor.Core.Parsers;

namespace GeViSetEditor.CLI.Commands
{
    /// <summary>
    /// Parse ALL configuration data comprehensively
    /// </summary>
    public static class ComprehensiveParseCommand
    {
        public static void Execute(string inputPath, string? outputJsonPath = null)
        {
            if (!File.Exists(inputPath))
            {
                Console.WriteLine($"ERROR: File not found: {inputPath}");
                return;
            }

            try
            {
                // Read file
                byte[] data = File.ReadAllBytes(inputPath);
                Console.WriteLine($"Input: {inputPath}");
                Console.WriteLine($"Size: {data.Length:N0} bytes");

                // Parse with comprehensive parser
                var parser = new ComprehensiveConfigParser();
                var config = parser.Parse(data);

                // Show sample properties
                Console.WriteLine($"\n=== Sample Properties (first 20) ===");
                foreach (var prop in config.Properties.Take(20))
                {
                    string valueStr = prop.Value?.ToString() ?? "null";
                    if (valueStr.Length > 50)
                        valueStr = valueStr.Substring(0, 47) + "...";
                    Console.WriteLine($"  {prop.Name} = {valueStr} ({prop.ValueType})");
                }

                if (config.Properties.Count() > 20)
                    Console.WriteLine($"  ... and {config.Properties.Count() - 20} more properties");

                // Show Rules sections
                Console.WriteLine($"\n=== Rules Sections (first 5) ===");
                foreach (var rules in config.RulesSections.Take(5))
                {
                    if (rules.Value is List<string> actions)
                    {
                        Console.WriteLine($"\nRules at offset {rules.StartOffset}:");
                        Console.WriteLine($"  Actions: {actions.Count}");
                        foreach (var action in actions.Take(3))
                        {
                            Console.WriteLine($"    - {action}");
                        }
                        if (actions.Count > 3)
                            Console.WriteLine($"    ... and {actions.Count - 3} more actions");
                    }
                }

                // Export to JSON if requested
                if (!string.IsNullOrEmpty(outputJsonPath))
                {
                    Console.WriteLine($"\n=== Exporting to JSON ===");

                    var options = new JsonSerializerOptions
                    {
                        WriteIndented = true,
                        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                        Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping
                    };

                    string json = JsonSerializer.Serialize(config, options);
                    File.WriteAllText(outputJsonPath, json);

                    Console.WriteLine($"JSON written to: {outputJsonPath}");
                    Console.WriteLine($"JSON size: {json.Length:N0} characters ({json.Length / 1024:N0} KB)");
                }

                Console.WriteLine("\n✓ Comprehensive parsing complete!");

            }
            catch (Exception ex)
            {
                Console.WriteLine($"\n✗ ERROR: {ex.Message}");
                Console.WriteLine($"Stack trace:\n{ex.StackTrace}");
            }
        }
    }
}