import 'package:timemanagerapp/controller/NetWorkController.dart';
import 'package:timemanagerapp/database/dao/CourseDao.dart';
import 'package:timemanagerapp/entity/Course.dart';
import 'package:timemanagerapp/entity/CourseForm.dart';
import 'package:timemanagerapp/setting/Setting.dart';
import 'package:timemanagerapp/util/GetCourseByLogin.dart';

import '../util/dataUtil.dart';

class CourseController {
  static CourseController getInstance() {
    return new CourseController();
  }

  GetCourseByLogin getCourseByLogin = GetCourseByLogin();
  IdGenerator idGenerator = IdGenerator();
  List<Course> courseList = []; //实时维护的courseList缓存
  NetWorkController netWorkController = NetWorkController();

  DateTime termstartdate = Setting.startdate; //Setting.getStartDate();

  // 课表的时间范围
  final List<List<String>> raspiyane = [
    ["8:00", "8:45"], //1
    ["8:50", "9:35"],  //2
    ["10:05", "10:50"],  //3
    ["10:55", "11:40"],  //4

    ["13:30", "14:15"],  //5
    ["14:20", "15:05"],  //6
    ["15:35", "16:20"],  //7
    ["16:25", "17:10"],  //8

    ["18:30", "19:15"],
    ["19:20", "20:05"],
    ["20:10", "20:55"],
    ["21:10", "21:50"],
    ["22:05", "22:35"],
  ];

  Future<void> addCourseForm(CourseForm courseForm) async {
    List<Course> courseListToInsert = [];
    for (int week = courseForm.getStartWeek(); week <= courseForm.getEndWeek(); week++) {
        for(int day in courseForm.selectedDays){
          // 计算具体的日期和时间
          final startDate = termstartdate.add(Duration(
            days: (7 * (week - 1) + day! - 1),
            hours: int.parse(raspiyane[courseForm.getStartTime()  - 1][0].split(':')[0]),
            minutes: int.parse(raspiyane[courseForm.getStartTime() - 1][0].split(':')[1]),
          ));

          final endDate = termstartdate.add(Duration(
            days: (7 * (week - 1) + day! - 1),
            hours: int.parse(raspiyane[courseForm.getEndTime() - 1][1].split(':')[0]),
            minutes: int.parse(raspiyane[courseForm.getEndTime() - 1][1].split(':')[1]),
          ));
          Course course = Course(
            id:await idGenerator.generateId(),
            name: courseForm.getCourse(),
            userId: Setting.user!.getId!,
            courseId: await idGenerator.generateId(),
            teacher: courseForm.getTeacher(),
            location: courseForm.getLocation(),
            start: startDate,
            end: endDate,
            credit: courseForm.getCredit(),
            remark: courseForm.getNote()
          );
          courseListToInsert.add(course);
        }
      }
    await insertCourseList(courseListToInsert);
  }

  Future<List<Course>> getCourses() async {
    List<Map<String, dynamic>> courseMaps = await CourseDao().getCourses();
    List<Course> courses = []; // 用于存储转换后的Course对象列表

    for (var courseMap in courseMaps) {
      // 使用Course类的构造函数从Map创建Course对象
      Course course = Course(
        id: courseMap['id'],
        userId: courseMap['userId'],
        courseId: courseMap['courseId'],
        name: courseMap['name'],
        credit: courseMap['credit'],
        teacher: courseMap['teacher'],
        location: courseMap['location'],
        remark: courseMap['remark'],
        start: DateTime.parse(courseMap['start']),
        end: DateTime.parse(courseMap['end']),
      );
      courses.add(course);
    }
      courseList = courses; // 将Course对象添加到列表中
      return courseList;
  }

  Future<int> insertCourse(Course course) async {
    return await CourseDao().insertCourse(course);
  }

  Future<int> insertCourseList(List<Course> courseList) async {
    int result = 0;
    for(Course course in courseList){
      result += await CourseDao().insertCourse(course);
    }
    return result;
  }

  Future<int> autoImportCours(int stuid,String passwd,int year, int term) async {
    String jsonstr = await netWorkController.getUserCoursejson(stuid, passwd, year, term);
    List<Course> courseList = await getCourseByLogin.dealRawString(jsonstr);
    return await insertCourseList(courseList);
  }

  //test_autoImportCours
  Future<int> test_autoImportCours(String jsonstr) async {
    List<Course> courseList = await GetCourseByLogin().dealRawString(jsonstr);
    return await insertCourseList(courseList);
  }


  Future<int> deleteAllCourses() async {
    return await CourseDao().deleteAllCourses();
  }

  Future<int> deleteCourse(int id) async {
    return await CourseDao().deleteCourseById(id);
  }

}