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const readline = require('readline');
const random = (lo, hi) => lo + Math.floor(Math.random() * (hi - lo));
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
const rsleep = (lo, hi) => sleep(random(lo, hi));
const interface = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
const prompt = (question) =>
new Promise((resolve) =>
interface.question(`${blue(question)}\n> `, resolve));
const coloured = (colour) => (str) => `${colour}${reset(str)}`;
const yellow = coloured("\x1b[33m");
const blue = coloured("\x1b[34m");
const green = coloured("\x1b[32m");
const reset = (str) => `${str}\x1b[0m`;
const add = (a, b) => compute(a, b, "+");
const hedges = [
"um. okay. so,",
"right. next. uh,",
"hmm",
"okay. so,",
"um. okay.",
"uh okay..",
"so..",
];
const confirmations = [
"o right. ofc.",
"nice.",
"thank u.",
"thanks.",
"um right. yes.",
"right.",
];
const innumerables = [
"yeah i don't think we can do that one",
"that's not great for fib",
"um no sorry i can't help with that one",
"um????? no my b i can't help with that one",
"oh no my bad no i can't help u with that",
"sorry not that one",
"yaaa not that one though",
];
const dones = [
"we're done aren't we?",
"oh! that's it..?",
"all ... done??????",
"i think it's over",
"no more computation?",
"oh!",
"wait you did it all.",
"oh that's it?",
];
const thinkings = [
"let me just think a second..",
"hold on..",
"i just need a moment",
"uh wait",
"just looking at the data",
"sorry - looking over things",
"got everything just one sec",
"let me look at things",
"let me think a moment",
"just thinking ...",
];
const rarray = (array) => array[random(0, array.length)];
const hedge = () => rarray(hedges);
const confirmation = () => rarray(confirmations);
const innumerable = () => rarray(innumerables);
const done = () => rarray(dones);
const thinking = () => rarray(thinkings);
const rentries = (map) => rarray(Array.from(map.entries()));
const say = (msg, before, after) =>
sleep(before)
.then(() => console.log(...msg))
.then(() => sleep(after));
const fast = (...msg) => say(msg, random(30, 100), random(30, 100));
const slow = (...msg) => say(msg, random(400, 2000), random(200, 1000));
const compute = (a, b, op) =>
slow(hedge())
.then(() => prompt(`what is ${a} ${op} ${b}?`))
.then((value) => slow(confirmation()).then(() => value));
const build = (n, map) => {
if (n <= 0) {
const zero = () => Promise.resolve();
map.set(zero, 0);
return zero;
} else if (n === 1) {
const one = () => Promise.resolve();
map.set(one, 1);
return one;
} else {
const sub1 = build(n - 1, map);
const sub2 = build(n - 2, map);
const nth = () =>
(map.get(nth) === null && (map.get(sub1) !== null && map.get(sub2) !== null))
? add(map.get(sub2), map.get(sub1))
.then((value) => Promise.resolve(map.set(nth, value)).then(() => value))
: Promise.resolve();
map.set(nth, null);
return nth;
};
};
const fill = (map, top) =>
map.get(top) === null
? rentries(map)[0]().then(() => fill(map, top))
: Promise.resolve(map.get(top));
const hitlfib = (n) =>
Promise.resolve(new Map())
.then((map) => Promise.resolve(build(n, map))
.then((top) => fill(map, top)));
const hitlfibiter = (n, a = 0, b = 1) =>
n === 0
? Promise.resolve(a)
: n === 1
? Promise.resolve(b)
: add(a, b).then((result) => hitlfibiter(n - 1, b, result));
const number = () =>
prompt("give me a number")
.then((str) => str.trim())
.then((trimmed) => Promise.resolve(Number(trimmed))
.then((n) => (trimmed !== "" && n !== null && isFinite(n))
? n
: slow(hedge()).then(() => slow(innumerable())).then(number)));
const choose = () =>
prompt("would you like to use my iteration optimization??? yes????")
.then((response) => ["y", "yes"].includes(response.trim().toLowerCase()))
.then((should) => should
? fast("yes!").then(() => hitlfibiter)
: fast("oh.").then(() => slow("okay.")).then(() => slow("we can take it slow.")).then(() => hitlfib));
const flow = () =>
slow("\nwhat's the fib you'd like to compute? i can help u out")
.then(number)
.then((n) => slow(confirmation())
.then(() => fast(hedge()))
.then(() => slow(`i will help u compute ${green(`fib ${n}`)}`))
.then(choose)
.then((fib) => fib(n))
.then((fibn) => slow(hedge())
.then(() => fast(done()))
.then(() => fast(thinking()))
.then(() => rsleep(Math.min(1000, n * 100), Math.max(n * 500, 1000)))
.then(() => slow(green(`fib ${n} is ${fibn}`)))))
.then(() => rsleep(1000, 4000));
const loop = () => flow().then(loop);
loop();
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