Initial commit

db.js

@@ -0,0 +1,57 @@
+const sqlite3 = require('sqlite3')
+
+const db = new sqlite3.Database('count.db')
+
+db.run(`CREATE TABLE IF NOT EXISTS tb_count (
+    id    INTEGER      PRIMARY KEY AUTOINCREMENT
+                       NOT NULL
+                       UNIQUE,
+    name  VARCHAR (32) NOT NULL
+                       UNIQUE,
+    num   BIGINT       NOT NULL
+                       DEFAULT (0) 
+);`)
+
+function getNum(name) {
+  return new Promise((resolve, reject) => {
+    db.get('SELECT `name`, `num` from tb_count WHERE `name` = ?', name, (err, row) => {
+      if (err) reject(err)
+
+      resolve(row || { name, num: 0 })
+    })
+  })
+}
+
+function getAll(name) {
+  return new Promise((resolve, reject) => {
+    db.get('SELECT * from tb_count', (err, row) => {
+      if (err) reject(err)
+
+      resolve(row)
+    })
+  })
+}
+
+function setNum(name, num) {
+  return new Promise((resolve, reject) => {
+    db.run(`INSERT INTO tb_count(\`name\`, \`num\`)
+            VALUES($name, $num)
+            ON CONFLICT(name) DO
+            UPDATE SET \`num\` = $num;`
+      , {
+        $name: name,
+        $num: num
+      }
+      , (err, row) => {
+        if (err) reject(err)
+
+        resolve(row)
+      })
+  })
+}
+
+module.exports = {
+  getNum,
+  getAll,
+  setNum
+}

index.js

@@ -0,0 +1,74 @@
+'use strict'
+
+const fs = require('fs')
+const express = require('express')
+const compression = require('compression')
+
+const db = require('./db')
+
+const numList = require('./num-list')
+
+const PLACES = 7
+
+function getCountImage(count) {
+  // This is not the greatest way for generating an SVG but it'll do for now
+  const countArray = count.toString().padStart(PLACES, '0').split('')
+
+  const parts = countArray.reduce((acc, next, index) => `
+        ${acc}
+        <image x="${index * 45}" y="0" width="45px" height="100px" xlink:href="data:image/gif;base64,${numList[next]}" />
+`, '')
+
+  return `<?xml version="1.0" encoding="UTF-8"?>
+<svg width="${PLACES * 45}" height="100" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>Kawaii Count</title>
+    <g>
+      ${parts}
+    </g>
+</svg>
+`
+}
+
+
+const app = express()
+app.use(compression())
+app.set('view engine', 'pug')
+
+app.get('/', (req, res) => {
+  res.render('index')
+});
+
+// get the image
+app.get('/get/@:name', async (req, res) => {
+  const name = req.params.name
+
+  if (!name) return
+
+  const counter = await db.getNum(name)
+  const num = counter.num + 1
+
+  db.setNum(counter.name, num)
+
+  // This helps with GitHub's image cache 
+  res.set({
+    'content-type': 'image/svg+xml',
+    'cache-control': 'max-age=0, no-cache, no-store, must-revalidate'
+  })
+
+  // Send the generated SVG as the result
+  res.send(getCountImage(num))
+  console.log(counter)
+})
+
+app.get('/heart-beat', (req, res) => {
+  res.set({
+    'cache-control': 'max-age=0, no-cache, no-store, must-revalidate'
+  })
+
+  res.send('alive')
+  console.log('heart-beat')
+});
+
+const listener = app.listen(process.env.PORT, () => {
+  console.log('Your app is listening on port ' + listener.address().port)
+})