import 'dart:async';
import 'dart:ui';
import 'package:flutter/material.dart';

import 'package:rxdart/rxdart.dart';
import 'package:rxdart/subjects.dart';
import 'package:touch_demonstrator/model/touchData.dart';

class TouchDataBloc {
  final int xMax = 1200;
  String inputString = "";
  final history =  List<TouchData>();

//  final _touchData$ = BehaviorSubject<TouchData>(); // Touch Data from the input String
  final _touchData$ = PublishSubject<TouchData>(); // Touch Data from the input String
  final _touchVisualise$ = BehaviorSubject<Map<TouchData, Color>>();
  final _touchDataHistory$ = BehaviorSubject<List<TouchData>>(); //All touches

  // Controller Input of Data
  final _inputTouchDataController = StreamController<String>();
// Controller for outputting

  //SINKS (into bloc)
  Sink<String> get inputTouchData => _inputTouchDataController.sink;
  //STREAMS (output bloc)
  Stream<TouchData> get outputTouchData$ => _touchData$.stream;                 //->
  Stream<Map<TouchData,Color>> get outputVisualise$ => _touchVisualise$.stream; //->
  Stream<List<TouchData>> get outputHistory$ => _touchDataHistory$.stream; //->

  void dispose() {
    _inputTouchDataController.close();
    _touchData$.close();
    _touchVisualise$.close();
    _touchDataHistory$.close();
//    _touchDataHistory$.close();
  }

  static List<Color> _colorOfTouches = [
    Colors.blue,
    Colors.red,
    Colors.orange,
    Colors.white,
    Colors.yellow,
  ];

  static List<TouchData> _lastFingerTouch = [
    TouchData(5, 0, 1200, 1200),
    TouchData(5, 1, 1200, 1200),
    TouchData(5, 2, 1200, 1200),
    TouchData(5, 3, 1200, 1200),
    TouchData(5, 4, 1200, 1200),
  ];

  Map<TouchData, Color> touchCollection = {
    _lastFingerTouch[0]: _colorOfTouches[0],
    _lastFingerTouch[1]: _colorOfTouches[1],
    _lastFingerTouch[2]: _colorOfTouches[2],
    _lastFingerTouch[3]: _colorOfTouches[3],
    _lastFingerTouch[4]: _colorOfTouches[4],
  };

  TouchDataBloc() {
    print('init: Touch Data BLOC');
    _inputTouchDataController.stream.listen(_testTouchEventData);
  }

  void _updateStreams(TouchData t){
/*    print("<- Update Streams (${t.e}|${t.f}|${t.x.toString().padLeft(4,'0')}|"
        "${t.y.toString().padLeft(4,'0')})");*/
    _lastFingerTouch[t.fingerNumber].touchEvent(t.event, t.x, t.y);
    _touchData$.add(t); // Stream of single touches
    _touchVisualise$.add(touchCollection);
    //new:
    history.add(t);
    _touchDataHistory$.add(history);
  }

  void _testTouchEventData(String i) {
    print('_testTouchEventData');
    TouchData t = TouchData(0, 0, 0, 0);
    inputString = i;
//    print("input: $inputString");
    RegExp regExp = new RegExp(
      r"\(\d{1}\|\d{1}\|\d{4}\|\d{4}\)",
      caseSensitive: false,
      multiLine: false,
    );
    var matches = regExp.allMatches(inputString);
    for (var m in matches) {
//      print('${m.group(0)}');
      t.event = int.tryParse(m.group(0)[1]);
      t.fingerNumber = int.tryParse(m.group(0)[3]);
      t.x = int.tryParse(m.group(0).substring(5, 9));
      t.y = int.tryParse(m.group(0).substring(10, 14));
      if (t.x < 1024 && t.y < 1024 && (t.fingerNumber <=4) && (t.event==1 || t.event==4 || t.event==5)){
        _updateStreams(t);
        print('straem update');
      }
      else{
        print("Touch not Added!!!!!!!!!!!!");
      }
    }
  }
}