using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;

public class AchievementEditor : EditorWindow {

    Achievement achievement;
    Vector2 scrollPosition;

    int selected;
    bool editingAchi;
    int i;

    private List<string> achievements = new List<string>();
    private string id = "0"; //Used for Editor window id

    private string name = "Type name here...";
    private string desc = "Type description here...";
    private bool hidden = false;

    [MenuItem("Tools/Achievement Manager")]
    public static void Init(){
        AchievementEditor window = (AchievementEditor)EditorWindow.GetWindow(typeof(AchievementEditor));
        window.title = "Achievements";
    }

    public void LoadAchievements()
    {
        for (i = 0; i < achievement.achievements.Count; i++) {
            achievements.Add(achievement.achievements[i].name);
        }
    }

    public void OnEnable()
    {
        achievement = (Achievement)Resources.Load ("AchievementManager", typeof(Achievement));

        if(achievements.Count == 0)
        {
            LoadAchievements();
        }
    }

    void OnGUI(){

        EditorGUILayout.BeginHorizontal ();
        {
            scrollPosition = EditorGUILayout.BeginScrollView (scrollPosition, true, true, GUILayout.Width (position.width / 2.05f));
            {
                    selected = GUILayout.SelectionGrid (selected, achievements.ToArray (), 2);
            }
            EditorGUILayout.EndScrollView ();

            EditorGUILayout.BeginVertical();
            {
                //If button "Add achievement" is clicked then set id textfield to achievement.achievements.Count
                if (GUILayout.Button ("Add Achievement")) {
                    achievement.achievements.Add (new Achievement.AchievementItem ());
                    id = (achievement.achievements.Count - 1).ToString ();
                    achievement.achievements [StringToIntConverter (id)].id = StringToIntConverter (id);
                    achievement.achievements [StringToIntConverter (id)].name = "Template " + id;

                    achievements.Add (achievement.achievements [i].name);
                    selected = 0;
                }
                if (GUILayout.Button ("Edit Achievement")) {
                    if (selected <= (achievement.achievements.Count - 1)) {
                        achievement.achievements [selected].name = name;
                        achievement.achievements [selected].description = desc;
                        achievement.achievements [selected].hidden = hidden;
                        achievements [selected] = name;
                        editingAchi = false;
                    } else {
                        Debug.Log ("A achievement with such ID doesn't exist");
                    }
                }
                if (GUILayout.Button ("Remove Achievement")) {
                    if (selected <= (achievement.achievements.Count - 1)) {
                        achievement.achievements.RemoveAt (selected);
                        achievements.RemoveAt (selected);
                        selected = 0;
                    } else {
                        Debug.Log ("A achievement with such ID doesn't exist");
                    }

                    if(achievements.Count == 0)
                    {
                        selected = -1;
                        Debug.Log ("No achievements to select.");
                    }
                }
            }
            EditorGUILayout.EndVertical();

        }
        EditorGUILayout.EndHorizontal ();

        EditorGUILayout.Separator ();

        EditorGUILayout.BeginVertical ();
        {
            EditorGUILayout.LabelField ("ID:");
            id = EditorGUILayout.TextField (id);

            GUILayout.Space(7f);

            EditorGUILayout.LabelField ("Achievement Name:");
            name = EditorGUILayout.TextField (name);

            GUILayout.Space(7f);

            EditorGUILayout.LabelField ("Description:");
            desc = EditorGUILayout.TextArea (desc);

            GUILayout.Space(7f);

            EditorGUILayout.LabelField ("Hidden:");
            hidden = EditorGUILayout.Toggle (hidden);
        }
        EditorGUILayout.EndVertical ();

        GUILayout.Space(20f);

        if(selected > -1 && GUI.changed && !editingAchi)
        {
            name = achievement.achievements[selected].name;
            desc = achievement.achievements[selected].description;
            hidden = achievement.achievements[selected].hidden;
        }
        if(selected > -1 && GUI.changed)
        {
            id = achievement.achievements[selected].id.ToString();
        }

        GUILayout.Space (30);

        EditorGUILayout.LabelField ("Selected ID: " + selected.ToString());
        EditorGUILayout.LabelField ("List count: " + achievements.Count.ToString());
        EditorGUILayout.LabelField ("Editing?: " + editingAchi.ToString());
    }

    int StringToIntConverter(string value)
    {
        int id = int.Parse (value); //Converts value to int "idd"
        return id; //returns the int "idd"
    }

    bool IsNumeric(string value)
    {
        int number;
        bool id = int.TryParse (value, out number);
        return id;
    }

    void CheckForErrors(int errorid)
    {

    }
}