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

namespace GeViSetEditor.CLI.Commands
{
    /// <summary>
    /// Test complete binary parser - parses ENTIRE structure
    /// </summary>
    public static class ParseCompleteCommand
    {
        public static void Execute(string inputPath, string? outputJsonPath = null)
        {
            Console.WriteLine("=== Complete Binary Parser Test ===\n");

            if (!File.Exists(inputPath))
            {
                Console.WriteLine($"ERROR: File not found: {inputPath}");
                return;
            }

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

                // Parse with complete parser
                var parser = new CompleteBinaryParser();
                var setFile = parser.Parse(data);

                // Display results
                Console.WriteLine("\n=== Parse Results ===");
                Console.WriteLine($"Header: '{setFile.Header}'");
                Console.WriteLine($"Sections: {setFile.Sections.Count}");
                Console.WriteLine($"Total Items: {setFile.Statistics.TotalItems}");
                Console.WriteLine($"Total Rules: {setFile.Statistics.TotalRules}");
                Console.WriteLine($"Total Actions: {setFile.Statistics.TotalActions}");

                Console.WriteLine("\n=== Section Breakdown ===");
                foreach (var sectionType in setFile.Statistics.SectionTypes.OrderByDescending(x => x.Value))
                {
                    Console.WriteLine($"  {sectionType.Key}: {sectionType.Value} occurrences");
                }

                // Show first few sections in detail
                Console.WriteLine("\n=== First 10 Sections (Detail) ===");
                foreach (var section in setFile.Sections.Take(10))
                {
                    Console.WriteLine($"\nSection: '{section.Name}'");
                    Console.WriteLine($"  Offset: {section.FileOffset} - {section.FileEndOffset} ({section.ByteSize} bytes)");
                    Console.WriteLine($"  Items: {section.Items.Count}, Rules: {section.Rules.Count}");

                    if (section.Items.Count > 0)
                    {
                        Console.WriteLine("  Sample items:");
                        foreach (var item in section.Items.Take(3))
                        {
                            Console.WriteLine($"    {item.Key} = {item.Value} ({item.ValueType})");
                        }
                        if (section.Items.Count > 3)
                        {
                            Console.WriteLine($"    ... and {section.Items.Count - 3} more");
                        }
                    }

                    if (section.Rules.Count > 0)
                    {
                        Console.WriteLine("  Sample rules:");
                        foreach (var rule in section.Rules.Take(2))
                        {
                            Console.WriteLine($"    Rule #{rule.RuleId}: {rule.Actions.Count} actions");
                            foreach (var action in rule.Actions.Take(2))
                            {
                                Console.WriteLine($"      - {action}");
                            }
                        }
                    }
                }

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

                    var options = new JsonSerializerOptions
                    {
                        WriteIndented = true,
                        PropertyNamingPolicy = JsonNamingPolicy.CamelCase
                    };

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

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

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

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