65 lines
2.6 KiB
JavaScript
65 lines
2.6 KiB
JavaScript
const got = require('@/utils/got');
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const dayjs = require('dayjs');
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const customParseFormat = require('dayjs/plugin/customParseFormat');
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module.exports = async (ctx) => {
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dayjs.extend(customParseFormat);
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let yesterday = dayjs().subtract(1, 'day');
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const dayBefore = yesterday.subtract(1, 'day').format('YYYY-MM-DD');
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yesterday = yesterday.format('YYYY-MM-DD');
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const guid = `${ctx.params.source}-${ctx.params.target}-${yesterday}`;
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const cache = await ctx.cache.get(guid);
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const link = 'https://transferwise.com/tools/exchange-rate-alerts/';
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if (cache) {
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return Promise.resolve(JSON.parse(cache));
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} else {
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const source = ctx.params.source.toUpperCase();
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const target = ctx.params.target.toUpperCase();
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const api = `https://api.transferwise.com/v1/rates?source=${source}&target=${target}&from=${dayBefore}&to=${dayjs().format('YYYY-MM-DDTHH:mm:ssZ')}&group=day`;
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const response = await got({
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method: 'get',
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url: api,
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headers: {
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Referer: 'https://transferwise.com/tools/exchange-rate-alerts/',
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authorization: 'Basic OGNhN2FlMjUtOTNjNS00MmFlLThhYjQtMzlkZTFlOTQzZDEwOjliN2UzNmZkLWRjYjgtNDEwZS1hYzc3LTQ5NGRmYmEyZGJjZA==',
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'Content-Type': 'application/json',
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},
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});
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const data = response.data;
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const yRate = data[1];
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const byRate = data[2];
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const trend = yRate.rate > byRate.rate;
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const diff = (yRate.rate - byRate.rate) / yRate.rate;
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const percent = (Math.abs(diff) * 100).toFixed(4);
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const title = `${source}/${target} ${trend ? '📈' : '📉'} @${yRate.rate} ${diff > 0 ? '' : '-'}${percent}%`;
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const description = `<h3>${source} to ${target}</h3><table><tbody><tr><th align="left" style="border: 1px solid black;">Date</th><th align="left" style="border: 1px solid black;">Rate</th></tr><tr><td style="border: 1px solid black;">${yesterday}</td><td style="border: 1px solid black;">${yRate.rate}</td></tr><tr><td style="border: 1px solid black;">${dayBefore}</td><td style="border: 1px solid black;">${byRate.rate}</td></tr></tbody></table>`;
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const single = {
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title,
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description,
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pubDate: new Date().toUTCString(),
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guid,
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link,
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};
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ctx.cache.set(guid, JSON.stringify(ctx.state.data));
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ctx.state.data = {
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title: `${source} to ${target} by TransferWise`,
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link,
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description: `Exchange Rate from TransferWise`,
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item: [single],
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};
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}
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};
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