import 'package:flutter/foundation.dart';
import 'package:prod/models/editor.dart';
import 'package:prod/models/project.dart';
import "package:shared_preferences/shared_preferences.dart";
import "package:prod/models/constants.dart";
// import "package:json_annotation/json_annotation.dart";
import "dart:convert";

class GlobalModel extends ChangeNotifier {
  late List<Project> projects;
  late List<bool> hoverShow;
  late List<Editor> editors;
  late SharedPreferences prefs;
  late Map<String, int> id2EdtMap;
  bool importedData = false;
  bool edited = false;

  GlobalModel() {
    SharedPreferences.getInstance().then((a) {
      print("Loaded sp");
      prefs = a;
      editors = [Editor("", "None", "NANII", "", "")];
      id2EdtMap = {"NANII": 0};
      if (prefs.containsKey(kEditorsKey)) {
        String edtData = prefs.getString(kEditorsKey)!;
        List<dynamic> data = jsonDecode(edtData);
        for (var (i, d) in data.indexed) {
          var localEdt = Editor.fromJson(d);
          editors.add(localEdt);
          id2EdtMap[localEdt.id] = i + 1;
        }
      } else {
        prefs.setString(kEditorsKey, jsonEncode(editors));
      }
      print(id2EdtMap);
      final List<String> idList = id2EdtMap.keys.toList();

      projects = [];
      if (prefs.containsKey(kProjectsKey)) {
        String prjData = prefs.getString(kProjectsKey)!;
        List<dynamic> data = jsonDecode(prjData);
        for (var d in data) {
          projects.add(Project.fromJson(d, idList));
        }
      } else {
        prefs.setString(kProjectsKey, jsonEncode(projects));
      }
      print(projects);

      hoverShow = List.filled(projects.length, false, growable: true);
      print("loaded data");
      importedData = true;
      notifyListeners();
    });
  }

  void saveProjectState() {
    var arst = projects.map((a) => a.toJson()).toList();
    prefs.setString(kProjectsKey, jsonEncode(arst));
  }

  void saveEditorState() {
    var tempEditors = editors;
    tempEditors.removeWhere((a) => a.id == "");
    List<Map<String, dynamic>> arst = tempEditors
        .map((a) => a.toJson())
        .toList();
    prefs.setString(kEditorsKey, jsonEncode(arst));
  }

  // Project management

  void addPrj(Project prj) {
    projects.add(prj);
    hoverShow.add(false);
    saveProjectState();
    notifyListeners();
  }

  void delPrj(int index) {
    projects.removeAt(index);
    hoverShow.removeAt(index);
    saveProjectState();
    notifyListeners();
  }

  List<Project> get lsPrj {
    return projects;
  }

  int get lenPrj {
    return projects.length;
  }

  Project nthPrj(int index) {
    return projects[index];
  }

  void setHoverShow(int index, bool state) {
    hoverShow[index] = state;
    notifyListeners();
  }

  bool getHoverShow(int index) {
    return hoverShow[index];
  }

  void updatePrj(int index, Project prj) {
    projects[index] = prj;
    saveProjectState();
    notifyListeners();
  }

  // Editor List Management.

  void addEdt(Editor edt) {
    editors.add(edt);
    print(editors);
    id2EdtMap[edt.id] = editors.length - 1;
    saveEditorState();
    notifyListeners();
  }

  void delEdt(int index) {
    Editor removed = editors.removeAt(index);
    int remmedID = id2EdtMap.remove(removed.id)!;
    assert(index == remmedID);
    saveEditorState();
    notifyListeners();
  }

  int get lenEdt {
    return editors.length;
  }

  Editor nthEdt(int index) {
    return editors[index];
  }

  int getEdtPosFromID(String id) {
    return id2EdtMap[id] ?? 0;
  }

  // Editing controller

  bool get isEdited {
    return edited;
  }

  void updateEdited(bool a) {
    edited = a;
    notifyListeners();
  }
}