import 'dart:ui';

import 'package:timemanagerapp/entity/Course.dart';
import 'package:timemanagerapp/setting/Setting.dart';

class CourseWidgetController {
  final double pixelToMinuteRatio =
      0.9 * Setting.pixelToMinuteRatio_ratio; //old:0.9
  late List<Course> courseList;
  late DateTime mondayTime;
  late int weekCount;
  late DateTime termStartDate;

  CourseWidgetController() {
    mondayTime = getmondayTime();
    termStartDate = Setting.startdate;
    weekCount = getWeekCount();
  }

  //getInstance
  static CourseWidgetController getInstance() {
    return new CourseWidgetController();
  }

  static final List<Course> testcourseList = [
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 18, 7, 20),
        end: DateTime(2023, 9, 18, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 19, 7, 20),
        end: DateTime(2023, 9, 19, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 20, 7, 20),
        end: DateTime(2023, 9, 20, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 21, 7, 20),
        end: DateTime(2023, 9, 21, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 22, 7, 20),
        end: DateTime(2023, 9, 22, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 23, 7, 20),
        end: DateTime(2023, 9, 23, 10, 0)),
    Course(
        userId: 1,
        courseId: 2,
        name: 'Math',
        credit: 3,
        teacher: 'Mr. Smith',
        location: 'Room 101',
        remark: "null",
        start: DateTime(2023, 9, 24, 7, 20),
        end: DateTime(2023, 9, 24, 10, 0)),
  ];

  //时间转换为时间轴的piexl值的函数
  List<Offset> convertTimeList(List<DateTime> timePoints, double deviceWidth) {
    List<Offset> convertedTimes = [];
    for (var time in timePoints) {
      int hour = time.hour;
      int minute = time.minute;

      int totalMinutes = (hour - 7) * 60 + minute;
      double convertedTime = totalMinutes * pixelToMinuteRatio;
      convertedTimes.add(Offset(deviceWidth * 0.015, convertedTime));
    }

    return convertedTimes;
  }

  int getWeekCount() {
    weekCount = DateTime.now().difference(termStartDate).inDays ~/ 7 + 1;
    return weekCount;
  }

  DateTime getmondayTime() {
    mondayTime = DateTime.now();
    //获取本周星期一是几号
    while (mondayTime.weekday != 1) {
      mondayTime = mondayTime.subtract(Duration(days: 1));
    }
    return mondayTime;
  }

  Map<int, List<Course>> transformCourseMap(List<Course> courseList) {
    Map<int, List<Course>> courseMap = {};
    for (var course in courseList) {
      int weekCount = course.start.difference(termStartDate).inDays ~/ 7 + 1; //
      if (courseMap.containsKey(weekCount)) {
        courseMap[weekCount]!.add(course);
      } else {
        courseMap[weekCount] = [course];
      }
    }
    return courseMap;
  }
}