using System.Buffers.Text;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using MessagePack;
using CultMath;
using UnityEngine;
using UnityEditor;
using Random = CultMath.Random;

public class NameTools : EditorWindow
{
    public TextAsset[] NameFiles;
    public int NameGeneratorMinLength = 5;
    public int NameGeneratorMaxLength = 10;
    public int NameGeneratorOrder = 4;
    private int minWordLength = 4;
    private TextAsset nameFile;
    private MarkovNameGenerator _nameGenerator;
    private bool _stripNumberTokens;


    // Add menu named "My Window" to the Window menu
    [MenuItem("Window/Aetheria/Name Tools")]
    static void Init()
    {
        // Get existing open window or if none, make a new one:
        NameTools window = (NameTools)EditorWindow.GetWindow(typeof(NameTools));
        window.Show();
    }
    
    bool HasNonASCIIChars(string str)
    {
        return (System.Text.Encoding.UTF8.GetByteCount(str) != str.Length);
    }

    void OnGUI()
    {
        ScriptableObject target = this;
        SerializedObject so = new SerializedObject(target);
        SerializedProperty stringsProperty = so.FindProperty("NameFiles");

        EditorGUILayout.PropertyField(stringsProperty, true); // True means show children
        so.ApplyModifiedProperties(); // Remember to apply modified properties

        if (GUILayout.Button("Save Name Files"))
        {
            RegisterResolver.Register();
            var nameFilesDirectory = ActionGameManager.GameDataDirectory.CreateSubdirectory("NameFile");
            foreach (var nameFile in NameFiles)
            {
                var entry = new NameFile
                {
                    Name = nameFile.name, 
                    Names = nameFile.text.Split('\n')
                };
                File.WriteAllBytes(Path.Combine(nameFilesDirectory.FullName, $"{entry.ID.ToString()}.msgpack"), MessagePackSerializer.Serialize((DatabaseEntry) entry));
            }
        }
        
        nameFile = (TextAsset) EditorGUILayout.ObjectField("Name File", nameFile, typeof(TextAsset), false);
        minWordLength = EditorGUILayout.IntField("Minimum File Word Length", minWordLength);
        NameGeneratorMinLength = EditorGUILayout.IntField("Generated Minimum Word Length", NameGeneratorMinLength);
        NameGeneratorMaxLength = EditorGUILayout.IntField("Generated Maximum Word Length", NameGeneratorMaxLength);
        NameGeneratorOrder = EditorGUILayout.IntField("Generator Order", NameGeneratorOrder);
        _stripNumberTokens = GUILayout.Toggle(_stripNumberTokens, "Strip Number Tokens");

        if (GUILayout.Button("Clean Name File"))
        {
            var lines = nameFile.text.Split('\n');
            using StreamWriter outputFile = new StreamWriter(Path.Combine(Application.dataPath, nameFile.name + ".csv"));
            var names = new HashSet<string>();
            foreach (var line in lines)
            {
                var tokens = line.Split(',', ' ');
                foreach (var t in tokens)
                {
                    if (!HasNonASCIIChars(t))
                    {
                        var s = new string(t.Where(c => char.IsLetter(c) || c == '-' || c == '`' || c == '\'').ToArray()).Trim().Trim('`','-');
                        if(s.Length >= minWordLength && !names.Contains(s))
                        {
                            names.Add(s);
                            outputFile.WriteLine(s);
                        }
                    }
                }
            }
        }

        if (GUILayout.Button("Process Name File") && nameFile != null)
        {
            var names = new HashSet<string>();
            var lines = nameFile.text.Split('\n');
            foreach (var line in lines)
            {
                foreach(var word in line.ToUpperInvariant().Split(' ', ',', '.', '"'))
                    if (word.Length >= minWordLength && !names.Contains(word))
                        names.Add(word);
            }
            Debug.Log($"Found {lines.Length} lines, with {names.Count} unique names!");
            var random = new Random(1337);
            _nameGenerator = new MarkovNameGenerator(ref random, names, NameGeneratorOrder, NameGeneratorMinLength, NameGeneratorMaxLength);
        }

        if (_nameGenerator != null)
        {
            if (GUILayout.Button("Generate Name"))
            {
                Debug.Log(_nameGenerator.NextName);
            }
        }
    }
}