feat: init project with miniprogram, cloud functions and admin console

cloud/common/db.js

@@ -0,0 +1,45 @@
+var mysql = require('mysql2/promise')
+
+var pool = null
+
+function getPool() {
+  if (pool) return pool
+
+  pool = mysql.createPool({
+    host: process.env.DB_HOST || 'localhost',
+    port: parseInt(process.env.DB_PORT || '3306'),
+    user: process.env.DB_USER || 'root',
+    password: process.env.DB_PASSWORD || '',
+    database: process.env.DB_NAME || 'hox',
+    waitForConnections: true,
+    connectionLimit: 10,
+    charset: 'utf8mb4'
+  })
+
+  return pool
+}
+
+async function query(sql, params) {
+  var p = getPool()
+  var [rows] = await p.execute(sql, params)
+  return rows
+}
+
+async function insert(sql, params) {
+  var p = getPool()
+  var [result] = await p.execute(sql, params)
+  return result
+}
+
+async function update(sql, params) {
+  var p = getPool()
+  var [result] = await p.execute(sql, params)
+  return result
+}
+
+module.exports = {
+  query: query,
+  insert: insert,
+  update: update,
+  getPool: getPool
+}