import { tuple } from './tuple.js';
import { integer } from './integer.js';
import { paddedUintToBase32StringMapper, uintToBase32StringUnmapper } from './_internals/mappers/UintToBase32String.js';
const padded10Mapper = paddedUintToBase32StringMapper(10);
const padded8Mapper = paddedUintToBase32StringMapper(8);
function ulidMapper(parts) {
return (padded10Mapper(parts[0]) +
padded8Mapper(parts[1]) +
padded8Mapper(parts[2]));
}
function ulidUnmapper(value) {
if (typeof value !== 'string' || value.length !== 26) {
throw new Error('Unsupported type');
}
return [
uintToBase32StringUnmapper(value.slice(0, 10)),
uintToBase32StringUnmapper(value.slice(10, 18)),
uintToBase32StringUnmapper(value.slice(18)),
];
}
export function ulid() {
const timestampPartArbitrary = integer({ min: 0, max: 0xffffffffffff });
const randomnessPartOneArbitrary = integer({ min: 0, max: 0xffffffffff });
const randomnessPartTwoArbitrary = integer({ min: 0, max: 0xffffffffff });
return tuple(timestampPartArbitrary, randomnessPartOneArbitrary, randomnessPartTwoArbitrary).map(ulidMapper, ulidUnmapper);
}