Feat: Add Replit Database support.

config.yml

@@ -2,4 +2,4 @@ app:
   port: 3000
 
 db:
-  type: sqlite # sqlite or mongodb
+  type: sqlite # sqlite or mongodb or repl(using replit inbuilt database)

db/index.js

@@ -4,10 +4,13 @@ const config = require('config-yml')
 
 let db
 
-switch(config.db.type){
+switch (config.db.type) {
   case 'mongodb':
     db = require('./mongodb')
     break;
+  case 'repl':
+    db = require('./repl')
+    break;
   case 'sqlite':
   default:
     db = require('./sqlite')

db/repl.js

@@ -0,0 +1,30 @@
+const Database = require("@replit/database")
+
+const db = new Database()
+
+async function getNum(name) {
+  const num = await db.get(name)
+  return { name, num: num || 0 }
+}
+
+async function getAll() {
+  const keys = await db.list()
+  const rows = await Promise.all(keys.map(async key => ({ name: key, num: await db.get(key) || 0 })))
+  return rows
+}
+
+async function setNum(name, num) {
+  await db.set(name, num)
+}
+
+async function setNumMulti(counters) {
+  const promises = counters.map(({ name, num }) => db.set(name, num))
+  await Promise.all(promises)
+}
+
+module.exports = {
+  getNum,
+  getAll,
+  setNum,
+  setNumMulti
+}