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Merge pull request #7 from ozgurg/dev
release: v1.2.0
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| // This file should not be used and will be removed in the next major release | ||
| import { | ||
| closeBrowser, | ||
| emulateDevice, | ||
| ensurePageLoadOnlyDocument, | ||
| launchBrowser, | ||
| openNewPage | ||
| } from "./utils/browser.js"; | ||
| import { CurrencyCode, isValidCurrencyCode } from "./utils/currency-code.js"; | ||
| import { objectToQueryString } from "./utils/object-to-query-string.js"; | ||
| import { getDate, parseAndNormalizeDateInSearchResult } from "./utils/date.js"; | ||
|
|
||
| /** | ||
| * @param {object} params | ||
| * @param {CurrencyCode | string} params.from | ||
| * @param {CurrencyCode | string} params.to | ||
| * @returns {Promise<{from: CurrencyCode | string, to: CurrencyCode | string, rate: number, dateUpdated: string}>} | ||
| * @deprecated | ||
| */ | ||
| const googleCurrencyScraper = async ({ from, to }) => { | ||
| if (!isValidCurrencyCode(from)) { | ||
| throw new Error(`Invalid 'from' currency code: ${from}`); | ||
| } | ||
|
|
||
| if (!isValidCurrencyCode(to)) { | ||
| throw new Error(`Invalid 'to' currency code: ${to}`); | ||
| } | ||
|
|
||
| if (from === to) { | ||
| return { | ||
| from, | ||
| to, | ||
| rate: 1, | ||
| dateUpdated: getDate() | ||
| }; | ||
| } | ||
|
|
||
| const browser = await launchBrowser(); | ||
|
|
||
| const page = await openNewPage(browser); | ||
|
|
||
| // To lighter page and faster load times, I emulate a mobile device. | ||
| // So why iPhone 7? | ||
| // It doesn't matter which one as long as it's a mobile device. | ||
| // That's why I chose iPhone 7 as I use it in real life :) | ||
| await emulateDevice(page, "iPhone 7"); | ||
|
|
||
| // To lighter page and faster load times, make sure load only document. | ||
| await ensurePageLoadOnlyDocument(page); | ||
|
|
||
| await goToGoogleCurrencySearchResult(page, { from, to }); | ||
|
|
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| const result = await parseResult(page); | ||
|
|
||
| await closeBrowser(browser); | ||
|
|
||
| return { | ||
| from, | ||
| to, | ||
| rate: result.rate, | ||
| dateUpdated: parseAndNormalizeDateInSearchResult(result.dateUpdated) | ||
| }; | ||
| }; | ||
|
|
||
| /** | ||
| * @param {*} page | ||
| * @param {object} params | ||
| * @param {CurrencyCode | string} params.from | ||
| * @param {CurrencyCode | string} params.to | ||
| * @returns {Promise<* | null>} | ||
| * @deprecated | ||
| */ | ||
| async function goToGoogleCurrencySearchResult(page, { from, to }) { | ||
| const qs = objectToQueryString({ | ||
| q: `1+${from}+to+${to}`, | ||
| hl: "en" // Make sure to use the English language to avoid any weirdness | ||
| }); | ||
| return await page.goto(`https://www.google.com/search?${qs}`, { | ||
| waitUntil: "networkidle2" | ||
| }); | ||
| } | ||
|
|
||
| /** | ||
| * @param {*} page | ||
| * @returns {Promise<{rate: number, dateUpdated: string}>} | ||
| * @deprecated | ||
| */ | ||
| async function parseResult(page) { | ||
| return page.$eval( | ||
| "[data-exchange-rate]", | ||
| element => ({ | ||
| rate: parseFloat(element.getAttribute("data-exchange-rate")), | ||
| dateUpdated: element.nextSibling.querySelector("span").textContent | ||
| }) | ||
| ); | ||
| } | ||
|
|
||
| export default googleCurrencyScraper; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // TODO: Replace "node-fetch" with "fetch" when its commonly available | ||
| // https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API | ||
| import fetch from "node-fetch"; | ||
|
|
||
| /** | ||
| * @param {string} url | ||
| * @param {object} config | ||
| * @returns {Promise<string>} | ||
| */ | ||
| const makeGetRequest = async (url, config) => { | ||
| const response = await fetch(url, { | ||
| method: "GET", | ||
| ...config | ||
| }); | ||
| return response.text(); | ||
| }; | ||
|
|
||
| export { | ||
| makeGetRequest | ||
| }; |
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