feat: build CoffeeChat mini program and backend

cloudfunctions/quickstartFunctions/config.json

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+{
+  "permissions": {
+    "openapi": [
+      "wxacode.get"
+    ]
+  }
+}

cloudfunctions/quickstartFunctions/index.js

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+const cloud = require("wx-server-sdk");
+cloud.init({
+  env: cloud.DYNAMIC_CURRENT_ENV,
+});
+
+const db = cloud.database();
+// 获取openid
+const getOpenId = async () => {
+  // 获取基础信息
+  const wxContext = cloud.getWXContext();
+  return {
+    openid: wxContext.OPENID,
+    appid: wxContext.APPID,
+    unionid: wxContext.UNIONID,
+  };
+};
+
+// 获取小程序二维码
+const getMiniProgramCode = async () => {
+  // 获取小程序二维码的buffer
+  const resp = await cloud.openapi.wxacode.get({
+    path: "pages/index/index",
+  });
+  const { buffer } = resp;
+  // 将图片上传云存储空间
+  const upload = await cloud.uploadFile({
+    cloudPath: "code.png",
+    fileContent: buffer,
+  });
+  return upload.fileID;
+};
+
+// 创建集合
+const createCollection = async () => {
+  try {
+    // 创建集合
+    await db.createCollection("sales");
+    await db.collection("sales").add({
+      // data 字段表示需新增的 JSON 数据
+      data: {
+        region: "华东",
+        city: "上海",
+        sales: 11,
+      },
+    });
+    await db.collection("sales").add({
+      // data 字段表示需新增的 JSON 数据
+      data: {
+        region: "华东",
+        city: "南京",
+        sales: 11,
+      },
+    });
+    await db.collection("sales").add({
+      // data 字段表示需新增的 JSON 数据
+      data: {
+        region: "华南",
+        city: "广州",
+        sales: 22,
+      },
+    });
+    await db.collection("sales").add({
+      // data 字段表示需新增的 JSON 数据
+      data: {
+        region: "华南",
+        city: "深圳",
+        sales: 22,
+      },
+    });
+    return {
+      success: true,
+    };
+  } catch (e) {
+    // 这里catch到的是该collection已经存在，从业务逻辑上来说是运行成功的，所以catch返回success给前端，避免工具在前端抛出异常
+    return {
+      success: true,
+      data: "create collection success",
+    };
+  }
+};
+
+// 查询数据
+const selectRecord = async () => {
+  // 返回数据库查询结果
+  return await db.collection("sales").get();
+};
+
+// 更新数据
+const updateRecord = async (event) => {
+  try {
+    // 遍历修改数据库信息
+    for (let i = 0; i < event.data.length; i++) {
+      await db
+        .collection("sales")
+        .where({
+          _id: event.data[i]._id,
+        })
+        .update({
+          data: {
+            sales: event.data[i].sales,
+          },
+        });
+    }
+    return {
+      success: true,
+      data: event.data,
+    };
+  } catch (e) {
+    return {
+      success: false,
+      errMsg: e,
+    };
+  }
+};
+
+// 新增数据
+const insertRecord = async (event) => {
+  try {
+    const insertRecord = event.data;
+    // 插入数据
+    await db.collection("sales").add({
+      data: {
+        region: insertRecord.region,
+        city: insertRecord.city,
+        sales: Number(insertRecord.sales),
+      },
+    });
+    return {
+      success: true,
+      data: event.data,
+    };
+  } catch (e) {
+    return {
+      success: false,
+      errMsg: e,
+    };
+  }
+};
+
+// 删除数据
+const deleteRecord = async (event) => {
+  try {
+    await db
+      .collection("sales")
+      .where({
+        _id: event.data._id,
+      })
+      .remove();
+    return {
+      success: true,
+    };
+  } catch (e) {
+    return {
+      success: false,
+      errMsg: e,
+    };
+  }
+};
+
+// const getOpenId = require('./getOpenId/index');
+// const getMiniProgramCode = require('./getMiniProgramCode/index');
+// const createCollection = require('./createCollection/index');
+// const selectRecord = require('./selectRecord/index');
+// const updateRecord = require('./updateRecord/index');
+// const fetchGoodsList = require('./fetchGoodsList/index');
+// const genMpQrcode = require('./genMpQrcode/index');
+// 云函数入口函数
+exports.main = async (event, context) => {
+  switch (event.type) {
+    case "getOpenId":
+      return await getOpenId();
+    case "getMiniProgramCode":
+      return await getMiniProgramCode();
+    case "createCollection":
+      return await createCollection();
+    case "selectRecord":
+      return await selectRecord();
+    case "updateRecord":
+      return await updateRecord(event);
+    case "insertRecord":
+      return await insertRecord(event);
+    case "deleteRecord":
+      return await deleteRecord(event);
+  }
+};

cloudfunctions/quickstartFunctions/package.json

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+{
+  "name": "quickstartFunctions",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "wx-server-sdk": "~2.4.0"
+  }
+}