Revisión de gist:d61c2d421e064cff8aa10c524e46ac5e

Winston Hoy revisó este gist 4 years ago. Ir a la revisión

1 file changed, 65 insertions

carPriceNormalizer.mjs(archivo creado)

		@@ -0,0 +1,65 @@
1	+	#!/usr/bin/env node
2	+
3	+	const currentYear = new Date().getFullYear();
4	+
5	+	const adjustments = {
6	+	exteriorColor: {
7	+	black: 1000,
8	+	blue: -500,
9	+	burgundy: 500,
10	+	charcoal: 500,
11	+	deepBlue: 250,
12	+	silver: 0,
13	+	white: 250,
14	+	},
15	+	interiorColor: {
16	+	dark: 0,
17	+	light: 500,
18	+	mixed: -250,
19	+	},
20	+	miles: [ 5000, 150 ],
21	+	year: [ 1, 750 ],
22	+	};
23	+
24	+	const benchmark = {
25	+	exteriorColor: 'silver',
26	+	interiorColor: 'dark',
27	+	miles: 100000,
28	+	price: 10357,
29	+	year: 2016,
30	+	};
31	+
32	+	const [ price, year, miles, exteriorColor, interiorColor ] = process.argv.slice(2);
33	+	// args list length
34	+	if (process.argv.slice(2).length !== 5) {
35	+	throw new Error(`Expected exactly 5 args, found ${process.argv.slice(2).length}`);
36	+	}
37	+	// 1st 3 args should be numbers
38	+	[ price, year, miles ].forEach((number, i) => {
39	+	if (isNaN(number)) {
40	+	throw new Error(`arg #${number + 1} should be number`);
41	+	}
42	+	});
43	+	// 4th arg should be enumerated
44	+	if (!Object.keys(adjustments.exteriorColor).includes(exteriorColor)) {
45	+	throw new Error(`4th arg (exteriorColor) must be in list ${Object.keys(adjustments.exteriorColor).join(', ')}`);
46	+	}
47	+	// 5th arg should be enumerated
48	+	if (!Object.keys(adjustments.interiorColor).includes(interiorColor)) {
49	+	throw new Error(`5th arg (interiorColor) must be in list ${Object.keys(adjustments.interiorColor).join(', ')}`);
50	+	}
51	+
52	+	const benchYearsOld = currentYear - benchmark.year;
53	+	const yearsOld = currentYear - Number(year);
54	+
55	+	function calcAdjustment (benchValue, value, [ quantifier, valueAdjustment ] = [ 1, 1 ]) {
56	+	return (Number(value) - benchValue) / quantifier * valueAdjustment;
57	+	}
58	+
59	+	let adjustedPrice = Number(price);
60	+	adjustedPrice += calcAdjustment(benchmark.miles, miles, adjustments.miles);
61	+	adjustedPrice += calcAdjustment(benchYearsOld, yearsOld, adjustments.year);
62	+	adjustedPrice += calcAdjustment(0, adjustments.exteriorColor[exteriorColor]);
63	+	adjustedPrice += calcAdjustment(0, adjustments.interiorColor[interiorColor]);
64	+
65	+	console.log(adjustedPrice);

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