Reto mouredev#44 - javascript

Retos/Reto #44 - ADIVINANZAS MATEMÁTICAS [Media]/javascript/npminit-dev.js

@@ -0,0 +1,79 @@
+const readline = require('readline')
+
+let questCount = 1
+let correct = 0
+const ops = ['+', '-']
+
+const createIF = (readline) => readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+})
+
+const getOperation = (ops, quesCount) => {
+  const op = ops[Math.round(Math.random() * (ops.length - 1))]
+  let left
+  let right
+  if(quesCount <= 5) {
+    left = Math.round(Math.random() * 9)
+    right = Math.round(Math.random() * 9)
+  } else if(quesCount > 5 && quesCount <= 10) {
+    left = Math.round(Math.random() * 90)
+    right = Math.round(Math.random() * 9)
+  } else if(quesCount > 10 && quesCount <= 15) {
+    left = Math.round(Math.random() * 99)
+    right = Math.round(Math.random() * 99)
+  } else {
+    left = Math.round(Math.random() * 999)
+    right = Math.round(Math.random() * 99)
+  }
+  return [
+    `${left}${op}${right}`,
+    eval(`Math.trunc(${left}${op}${right})`)
+  ]
+}
+
+console.clear()
+console.log(
+` ---- MATH OPS GAME ----
+All result must be rounded to nearest the integer
+3 seconds contown per question...`)
+
+const question =() => {
+  return new Promise((res, rej) => {
+    let rl = createIF(readline)
+    let [opstring, expect] = getOperation(ops, questCount)
+    rl.question(
+    `- Question ${questCount}:
+    Which is the result of ${opstring}?\n`, (result) => {
+      if(parseInt(result) === expect) correct++
+      rl.close()
+      console.clear()
+      res('')
+    })
+    setTimeout(() => {
+      rl.close()
+      rej('')
+    }, 3000)
+  })
+}
+
+setTimeout(async () => {
+  console.clear()
+  while(questCount <= 20) {
+    try { await question() }
+    catch(_) { break }
+    questCount ++
+  }
+  console.clear()
+  console.log(`
+  GAME END!!!
+  Correct answers: ${correct}/20
+  ${correct <= 10 ?
+    'Meh... better luck next time' :
+    correct > 10 && correct <= 15 ?
+    'Not bad, but you can improve' :
+    correct > 15 && correct <= 19 ?
+    'Great work!' : 'Perfect!!!'
+  }`)
+  process.exit(0)
+}, 4000)