mtcute/packages/client/src/utils/misc-utils.ts

import { MaybeDynamic, MtCuteError } from '../types'
import { BigInteger } from 'big-integer'
import { randomBytes } from '@mtcute/core/src/utils/buffer-utils'
import { bufferToBigInt } from '@mtcute/core/src/utils/bigint-utils'
import { tl } from '@mtcute/tl'

export const EMPTY_BUFFER = Buffer.alloc(0)

export function normalizePhoneNumber(phone: string): string {
    phone = phone.trim().replace(/[+()\s-]/g, '')
    if (!phone.match(/^\d+$/)) throw new MtCuteError('Invalid phone number')

    return phone
}

export async function resolveMaybeDynamic<T>(val: MaybeDynamic<T>): Promise<T> {
    return val instanceof Function ? await val() : await val
}

export function randomUlong(): BigInteger {
    return bufferToBigInt(randomBytes(8))
}

export function extractChannelIdFromUpdate(
    upd: tl.TypeUpdate
): number | undefined {
    // holy shit
    return 'channelId' in upd
        ? upd.channelId
        : 'message' in upd &&
          typeof upd.message !== 'string' &&
          'peerId' in upd.message &&
          upd.message.peerId &&
          'channelId' in upd.message.peerId
        ? upd.message.peerId.channelId
        : undefined
}

export function normalizeDate(
    date: Date | number | undefined
): number | undefined {
    return date
        ? ~~((typeof date === 'number' ? date : date.getTime()) / 1000)
        : undefined
}