feat: 喜欢的卡片可以查看详情了

cloudfunctions/getCard/config.json

@@ -0,0 +1,6 @@
+{
+  "permissions": {
+    "openapi": [
+    ]
+  }
+}

cloudfunctions/getCard/index.js

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+const cloud = require('wx-server-sdk');
+
+cloud.init({
+  env: cloud.DYNAMIC_CURRENT_ENV,
+});
+
+const db = cloud.database();
+const _ = db.command;
+const $ = _.aggregate;
+
+exports.main = async (event, context) => {
+  const wxContext = cloud.getWXContext();
+  const openid = wxContext.OPENID;
+  const _id = event._id;
+
+  const promiseCard = db.collection('cards').doc(_id).get().then(({ data }) => data);
+  const promiseLiked =
+    db.collection('card_like')
+      .where({ card_id: _id, state: 1 })
+      .count()
+      .then(({ total }) => total);
+  const promiseState =
+    db.collection('card_like')
+      .where({ card_id: _id, openid })
+      .limit(1)
+      .get()
+      .then(({ data }) => data[0] && data[0].state);
+
+  const [card, liked, state] = await Promise.all([promiseCard, promiseLiked, promiseState]);
+
+  return {
+    ...card,
+    like_count: liked,
+    like_state: state,
+  };
+}

cloudfunctions/getCard/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "getCard",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "wx-server-sdk": "~2.6.1"
+  }
+}