#if UNITY_EDITOR
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEngine;

public class FindTextInScriptsWindow : EditorWindow
{
    static string pathKey = "efpafvn98qnvq23ru9fse"; // How to make keys not crash with other keys ^:D
    static string searchKey = "rvi23uq4vekpfeaofi293gsp4";

    // Add menu named "My Window" to the Window menu
    [MenuItem("Window/FindTextInScripts Window")]
    static void Init()
    {
        // Get existing open window or if none, make a new one:
        FindTextInScriptsWindow window = (FindTextInScriptsWindow)EditorWindow.GetWindow(typeof(FindTextInScriptsWindow));
        window.Show();

        scriptPath = PlayerPrefs.GetString(pathKey, "");
        searchText = PlayerPrefs.GetString(searchKey, "");
    }

    struct FindTextInScriptsLine
    {
        public string text;
        public string filename;
        public int line;
        public Object obj;
    }

    List<FindTextInScriptsLine> todos = new List<FindTextInScriptsLine>();
    Vector2 scrollPos;

    static string scriptPath = "";

    static string searchText = "";

    void OnGUI()
    {
        var oldText = searchText;
        var oldPath = scriptPath;

        GUILayout.Label("Input text to find");
        searchText = GUILayout.TextField(searchText);
        GUILayout.Label("Search folder path");
        scriptPath = GUILayout.TextField(scriptPath);

        if (searchText.Equals(oldText) == false || scriptPath.Equals(oldPath) == false)
        {
            PlayerPrefs.SetString(pathKey, scriptPath);
            PlayerPrefs.SetString(searchKey, searchText);
        }

        if (GUILayout.Button("Find occurrences", GUILayout.Width(EditorGUIUtility.currentViewWidth)))
        {
            todos.Clear();

            if (searchText.Equals("") == false)
            {
                var pathName = Application.dataPath.Substring(0, Application.dataPath.Length - "Assets".Length);
                pathName = pathName.Replace('/', '\\');
                var pathStartAt = pathName.Length;

                string path = "Assets/" + scriptPath;
                var info = new DirectoryInfo(path);
                var fileInfo = info.GetFiles("*.cs", SearchOption.AllDirectories);
                foreach (var file in fileInfo)
                {
                    var reader = file.OpenText();
                    var text = reader.ReadToEnd();
                    var rows = text.Split('\n');
                    for (int i = 0; i < rows.Length; i++)
                    {
                        if (rows[i].Contains(searchText))
                        {
                            FindTextInScriptsLine newLine;
                            newLine.text = rows[i].Trim();
                            newLine.filename = file.Name;
                            newLine.line = i;
                            newLine.obj = AssetDatabase.LoadAssetAtPath(file.FullName.Substring(pathStartAt, file.FullName.Length - pathStartAt), typeof(MonoScript));
                            todos.Add(newLine);
                        }
                    }

                    reader.Close();
                }
            }
            else
            {
                Debug.LogWarning("Trying to search empty string is not a good idea...");
            }
        }

        scrollPos = EditorGUILayout.BeginScrollView(scrollPos, false, false);
        for (int i = 0; i < todos.Count; i++)
        {
            float margin = 30;
            float buttonWidth = 200;

            EditorGUILayout.BeginHorizontal();
            GUILayout.FlexibleSpace();
            GUILayout.Label(todos[i].text, GUILayout.Width(EditorGUIUtility.currentViewWidth - buttonWidth - margin));

            if (GUILayout.Button(todos[i].filename, GUILayout.Width(buttonWidth)))
            {
                AssetDatabase.OpenAsset(todos[i].obj, todos[i].line + 1);
            }
            EditorGUILayout.EndHorizontal();
        }
        EditorGUILayout.EndScrollView();
    }
}
#endif