lms-app/src/app/tabs/courses/course-details/course-details.component.ts

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Subscription } from 'rxjs';
import { Location } from '@angular/common';
import { DemoService } from '../../../services/demo.service';

@Component({
	selector: 'app-course-details',
	templateUrl: './course-details.component.html',
	styleUrls: ['./course-details.component.scss']
})
export class CourseDetailsComponent implements OnInit {
    selectedSegment: string = 'home';
    heading: string;
    routeSubscription: Subscription;
    selectedChapter: number = 0;
    showDeletePopup: boolean = false;
    isSubSegment: boolean = true;
    selectedTopic: number;
    classLevel: string;

    demoType: string;

    chapterList = [];

    constructor(
        private route: ActivatedRoute,
        private location: Location,
        private demoService: DemoService
    ) { }

    ngOnInit(): void {
        let classLevel: string, courseId: string;
        this.routeSubscription = this.route.params.subscribe((params) => {
            classLevel = params['classLevel'];
            this.classLevel = classLevel;
            courseId = params['courseId'];
        });

        this.demoType = localStorage.demoType;
        let courseData = this.demoService.courseData;
        let course = courseData.find((courseClass) => courseClass.classLevel === classLevel).courses.find((course) => course.id === courseId);
        this.heading = course.name;
        this.chapterList = course.chapterList;
    }

    ngOnDestroy() {
        this.routeSubscription.unsubscribe();
    }

    back() {
        this.location.back();
    }

    getPopupDeleteDecision(e : string) {
        if (e === 'false') {
            this.showDeletePopup = false;
        }

        if (e === 'true') {
            this.chapterList[this.selectedChapter].topics[this.selectedTopic].mediaState = 'none';
            this.showDeletePopup = false;
        }
    }

    downloadMedia() {
        this.chapterList[this.selectedChapter].topics[this.selectedTopic].mediaState = 'downloading';

        setTimeout(() => {
            this.chapterList[this.selectedChapter].topics[this.selectedTopic].mediaState = 'downloaded';
        }, 1500);
    }

}