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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | 34x 18x 13x 7x 7x 1x 6x 15x 10x 29x 24x 15x 3x 1x 2x 1x 1x 62x 6x 56x 3x 53x 3x 50x 3x | import { PriceItem } from 'ish-core/models/price-item/price-item.model';
import { Price } from './price.model';
export class PriceHelper {
static diff(p1: Price, p2: Price): Price {
PriceHelper.sanityChecks(p1, p2);
return {
type: p1.type,
currency: p1.currency,
value: Math.round((p1.value - p2.value) * 100) / 100,
};
}
/**
* Inverts the value of a price
*
* @param price The price
* @returns inverted price
*/
static invert<T extends Price | PriceItem>(price: T): T {
if (price) {
if (price.type === 'Money') {
return { ...price, value: (price as Price).value * -1 };
}
return { ...price, gross: (price as PriceItem).gross * -1, net: (price as PriceItem).net * -1 };
}
}
// visible-for-testing
static min(p1: Price, p2: Price): Price {
PriceHelper.sanityChecks(p1, p2);
return {
type: p1.type,
currency: p1.currency,
value: Math.round(Math.min(p1.value, p2.value) * 100) / 100,
};
}
static sum(p1: Price, p2: Price): Price {
PriceHelper.sanityChecks(p1, p2);
return {
type: p1.type,
currency: p1.currency,
value: Math.round((p1.value + p2.value) * 100) / 100,
};
}
static empty(currency?: string): Price {
return {
type: 'Money',
value: 0,
currency,
};
}
static getPrice(currency: string, value: number): Price {
if (!currency) {
throw new Error('getPrice cannot handle undefined currency');
}
if (value === undefined) {
throw new Error('getPrice cannot handle undefined value');
}
return { currency, value, type: 'Money' };
}
private static sanityChecks(p1: Price, p2: Price) {
if (!p1 || !p2) {
throw new Error('cannot handle undefined inputs');
}
if (!Number.isFinite(p1.value) || !Number.isFinite(p2.value)) {
throw new Error('cannot handle undefined values');
}
if (!p1.currency || !p2.currency) {
throw new Error('cannot handle undefined currency');
}
if (p1.currency !== p2.currency) {
throw new Error('currency mismatch');
}
}
}
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