// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/allSettled

import { __TS__Promise, PromiseState } from "./Promise";

// eslint-disable-next-line @typescript-eslint/promise-function-async

export function __TS__PromiseAllSettled<T>(

this: void,

iterable: Iterable<T>

): Promise<Array<PromiseSettledResult<T extends PromiseLike<infer U> ? U : T>>> {

const results: Array<PromiseSettledResult<T extends PromiseLike<infer U> ? U : T>> = [];

const toResolve = new LuaTable<number, PromiseLike<T>>();

let numToResolve = 0;

let i = 0;

for (const item of iterable) {

if (item instanceof __TS__Promise) {

if (item.state === PromiseState.Fulfilled) {

// If value is a resolved promise, add a fulfilled PromiseSettledResult

results[i] = { status: "fulfilled", value: item.value };

} else if (item.state === PromiseState.Rejected) {

// If value is a rejected promise, add a rejected PromiseSettledResult

results[i] = { status: "rejected", reason: item.rejectionReason };

} else {

// If value is a pending promise, add it to the list of pending promises

numToResolve++;

toResolve.set(i, item);

}

} else {

// If value is not a promise, add it to the results as fulfilled PromiseSettledResult

results[i] = { status: "fulfilled", value: item as any };

}

i++;

}

// If there are no remaining pending promises, return a resolved promise with the results

if (numToResolve === 0) {

return Promise.resolve(results);

}

return new Promise(resolve => {

for (const [index, promise] of pairs(toResolve)) {

promise.then(

data => {

// When resolved, add a fulfilled PromiseSettledResult

results[index] = { status: "fulfilled", value: data as any };

numToResolve--;

if (numToResolve === 0) {

// If there are no more promises to resolve, resolve with our filled results array

resolve(results);

}

},

reason => {

// When resolved, add a rejected PromiseSettledResult

results[index] = { status: "rejected", reason };

numToResolve--;

if (numToResolve === 0) {

// If there are no more promises to resolve, resolve with our filled results array

resolve(results);

}

}

);

}

});

}