From fe3a03be134413ed427232aae0ebb055a2b1fdaa Mon Sep 17 00:00:00 2001
From: Henry Wang <hi@henry.wang>
Date: Mon, 25 Nov 2019 03:50:46 +0000
Subject: [PATCH] =?UTF-8?q?feat:=20add=20TransferWise=20=E6=98=A8=E6=97=A5?=
 =?UTF-8?q?=E6=B1=87=E7=8E=87=E5=8F=98=E5=8A=A8=20(#3466)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 docs/en/other.md                | 12 ++++++-
 docs/other.md                   | 10 ++++++
 lib/router.js                   |  3 ++
 lib/routes/transferwise/pair.js | 61 +++++++++++++++++++++++++++++++++
 4 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 lib/routes/transferwise/pair.js

diff --git a/docs/en/other.md b/docs/en/other.md
index e691ab0b8..50c9ad711 100644
--- a/docs/en/other.md
+++ b/docs/en/other.md
@@ -71,10 +71,20 @@ EZTV provides an official RSS feed of all torrents: https://eztv.ag/ezrss.xml
 
 ### Remote.work Job Information
 
-<Route author="luyuhuang" example="/remote-work/all" path="/remote-work/:caty?" :paramsDesc="['Job category, default all']" radar="1">
+<Route author="luyuhuang" example="/remote-work/all" path="/remote-work/:caty?" :paramsDesc="['Job category, default to all']" radar="1">
 
 | All Jobs | Development | Design | Operation | Product | Other | Marketing | Sales |
 | :------: | :---------: | :----: | :-------: | :-----: | :---: | :-------: | :---: |
 |   all    | development | design | operation | product | other | marketing | sales |
 
 </Route>
+
+## TransferWise
+
+### FX Pair Yesterday
+
+<RouteEn author="HenryQW" example="/transferwise/pair/GBP/USD" path="/transferwise/pair/:source/:target" :paramsDesc="['Base currency abbreviation','Quote currency abbreviation']">
+
+See [the list of supported currencies](https://transferwise.com/tools/exchange-rate-alerts/).
+
+</RouteEn>
diff --git a/docs/other.md b/docs/other.md
index ce3d3cf1f..6829abdc8 100644
--- a/docs/other.md
+++ b/docs/other.md
@@ -107,6 +107,16 @@ pageClass: routes
 
 <Route author="sbilly" example="/sans/summit_archive" path="/sans/summit_archive" />
 
+## TransferWise
+
+### 昨日汇率变动
+
+<Route author="HenryQW" example="/transferwise/pair/GBP/USD" path="/transferwise/pair/:source/:target" :paramsDesc="['本币缩写','外币缩写']">
+
+参见支持的[货币列表](https://transferwise.com/tools/exchange-rate-alerts/)。
+
+</Route>
+
 ## TSSstatus（iOS 降级通道）
 
 ### Status
diff --git a/lib/router.js b/lib/router.js
index b630f3f96..ade5c9836 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -1995,6 +1995,9 @@ router.get('/itslide/new', require('./routes/itslide/new'));
 // Remote Work
 router.get('/remote-work/:caty?', require('./routes/remote-work/index'));
 
+// TransferWise
+router.get('/transferwise/pair/:source/:target', require('./routes/transferwise/pair'));
+
 // chocolatey
 router.get('/chocolatey/software/:name?', require('./routes/chocolatey/software'));
 
diff --git a/lib/routes/transferwise/pair.js b/lib/routes/transferwise/pair.js
new file mode 100644
index 000000000..bb9ff9162
--- /dev/null
+++ b/lib/routes/transferwise/pair.js
@@ -0,0 +1,61 @@
+const got = require('@/utils/got');
+const dayjs = require('dayjs');
+const customParseFormat = require('dayjs/plugin/customParseFormat');
+
+module.exports = async (ctx) => {
+    dayjs.extend(customParseFormat);
+    let yesterday = dayjs().subtract(1, 'day');
+    const dayBefore = yesterday.subtract(1, 'day').format('YYYY-MM-DD');
+
+    yesterday = yesterday.format('YYYY-MM-DD');
+
+    const guid = `${ctx.params.source}-${ctx.params.target}-${yesterday}`;
+    const cache = await ctx.cache.get(guid);
+
+    const link = 'https://transferwise.com/tools/exchange-rate-alerts/';
+
+    if (cache) {
+        return Promise.resolve(JSON.parse(cache));
+    } else {
+        const source = ctx.params.source.toUpperCase();
+        const target = ctx.params.target.toUpperCase();
+        const api = `https://api.transferwise.com/v1/rates?source=${source}&target=${target}&from=${dayBefore}&to=${yesterday}&group=day`;
+
+        const response = await got({
+            method: 'get',
+            url: api,
+            headers: {
+                Referer: 'https://transferwise.com/tools/exchange-rate-alerts/',
+                authorization: 'Basic OGNhN2FlMjUtOTNjNS00MmFlLThhYjQtMzlkZTFlOTQzZDEwOjliN2UzNmZkLWRjYjgtNDEwZS1hYzc3LTQ5NGRmYmEyZGJjZA==',
+                'Content-Type': 'application/json',
+            },
+        });
+
+        const data = response.data;
+        const trend = data[0].rate > data[1].rate;
+        const diff = (data[0].rate - data[1].rate) / data[1].rate;
+
+        const percent = (Math.abs(diff) * 100).toFixed(4);
+
+        const title = `${source}/${target} ${trend ? '📈' : '📉'} @${data[0].rate} ${diff > 0 ? '' : '-'}${percent}%`;
+
+        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;">${data[0].rate}</td></tr><tr><td style="border: 1px solid black;">${dayBefore}</td><td style="border: 1px solid black;">${data[1].rate}</td></tr></tbody></table>`;
+
+        const single = {
+            title,
+            description,
+            pubDate: new Date().toUTCString(),
+            guid,
+            link,
+        };
+
+        ctx.cache.set(guid, JSON.stringify(ctx.state.data));
+
+        ctx.state.data = {
+            title: `${source} to ${target} by TransferWise`,
+            link,
+            description: `Exchange Rate from TransferWise`,
+            item: [single],
+        };
+    }
+};