import { Component, Input } from '@angular/core';
import { Term } from '../../core/models/term';
import { Course } from '../../core/models/course';
import { CdkDragDrop, moveItemInArray, transferArrayItem } from '@angular/cdk/drag-drop';

@Component({
	selector: 'cse-term-container',
	templateUrl: './term-container.component.html',
	styleUrls: ['./term-container.component.scss']
})

export class TermContainerComponent {
	@Input() term: Term;
	@Input() courses: Course[];
	@Input() termCodes: String[];
	terms: any[];

	constructor() {}

	getTotalCredits() {
		if (!this.courses) {
			return '0';
		}
		let total = 0;
		for (const course of this.courses) {
			total += course.credits;
		}
		return total;
	}

	drop(event: CdkDragDrop<string[]>) {
		if (event.previousContainer === event.container) {
			moveItemInArray(event.container.data, event.previousIndex, event.currentIndex);
		} else {
			transferArrayItem(event.previousContainer.data,
							event.container.data,
							event.previousIndex,
							event.currentIndex);
		}
	}
}