47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
import { Pipe, PipeTransform } from '@angular/core';
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import { AssignmentPollService } from 'app/site/assignments/services/assignment-poll.service';
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import { MotionPollService } from 'app/site/motions/services/motion-poll.service';
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import { PollData } from 'app/site/polls/services/poll.service';
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/**
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* Uses a number and a ViewPoll-object.
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* Converts the number to the voting percent base using the
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* given 100%-Base option in the poll object
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*
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* returns null if a percent calculation is not possible
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* or the result is 0
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*
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* @example
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* ```html
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* <span> {{ voteYes | pollPercentBase: poll }} </span>
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* ```
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*/
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@Pipe({
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name: 'pollPercentBase'
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})
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export class PollPercentBasePipe implements PipeTransform {
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private decimalPlaces = 3;
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public constructor(
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private assignmentPollService: AssignmentPollService,
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private motionPollService: MotionPollService
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) {}
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public transform(value: number, poll: PollData): string | null {
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let totalByBase: number;
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if ((<any>poll).assignment) {
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totalByBase = this.assignmentPollService.getPercentBase(poll);
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} else {
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totalByBase = this.motionPollService.getPercentBase(poll);
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}
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if (totalByBase && totalByBase > 0) {
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const percentNumber = (value / totalByBase) * 100;
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const result = percentNumber % 1 === 0 ? percentNumber : percentNumber.toFixed(this.decimalPlaces);
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return `(${result} %)`;
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}
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return null;
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}
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}
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