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import { createInterface } from 'node:readline/promises';
const noteList = [
["do", "tidi"],
["dodi", "rebe"],
["re"],
["redi", "mibe"],
["mi", "fabe"],
["fa", "midi"],
["fadi", "sobe"],
["so"],
["sodi", "labe"],
["la"],
["ladi", "tibe"],
["ti", "dobe"],
];
const MAX_INTERVAL = 4;
const randomIndex = (array) => Math.floor(Math.random() * array.length);
const randomElement = (array) => array[randomIndex(array)];
const readline = createInterface({
input: process.stdin,
output: process.stdout,
});
const makeTest = async () => {
const startingNoteIndex = randomIndex(noteList);
// random number between -$MAX_INTERVAL --- +$MAX_INTERVAL
const getInterval = () => Math.round((Math.random() * MAX_INTERVAL * 2) - MAX_INTERVAL);
const interval = getInterval()
const displayInterval = interval > 0 ? `+${interval}`: interval;
const displayStartingNote = randomElement(noteList[startingNoteIndex])
// 11 + 4 should yield 3
const targetIndex = (startingNoteIndex + interval) % noteList.length
const acceptedAnswers = noteList.at(targetIndex);
performance.mark('start')
const response = await readline.question(`${displayStartingNote} ${displayInterval} `)
try {
if (acceptedAnswers.includes(response)) {
performance.mark('end')
const { duration } = performance.measure('time', 'start', 'end')
console.log('correct!', `Took ${Math.round(duration)/1000}s`);
} else {
console.log('wrong! should be:', acceptedAnswers.join(', or '))
}
} catch (e) {
console.log('error!');
console.log({ startingNoteIndex, interval, targetIndex })
}
}
while (true) {
await makeTest()
}
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