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import { isBetween } from '@jsweb/utils/modules/number'
/**
* Generates a random number as string with optional radix and size limit.
* The `radix` parameter can be a number from 2 to 36. Default is 10, which generates base 10 random numbers.
* The `limit` size parameter can be a number from 1 to 40. Default is 40, which is the bigger possible.
* Keep in mind that `radix` can automatic limit the result max size.
*
* @export {function}
* @param {number} [radix=10] - Optional radix used to convert the number to string.
* @param {number} [limit=40] - Optional size limit used to cut the string result.
* @returns {string}
* @example
* import { rand } from '@jsweb/randkey'
*
* rand() // '555847878175'
* rand(2) // '1001010000010000000001111111010100000110'
* rand(8) // '2036103777231'
* rand(16) // '12a82628ee7'
* rand(32) // '18vq5b2hq'
* rand(36) // 'fdqlsnvb'
*/
export function rand(radix: number = 10, limit: number = 40): string {
const rnd = Date.now() * Math.random()
const rdx = isBetween(radix, 2, 36) ? radix : 10
const cut = isBetween(limit, 1, 40) ? limit : 40
const result = Math.round(rnd).toString(rdx).substring(0, cut)
return result
}
/**
* Generates a random hexadecimal number as string with optional custom size limit.
* Size limit must be from 1 to 11. Default is 11, which is the bigger possible.
* It is just an alias for `rand(16, limit)`.
*
* @export {function}
* @param {number} [limit=11] - Optional size limit used to cut the string result.
* @returns {string}
* @example
* import { hex } from '@jsweb/randkey'
*
* hex(6) // 'f9c1d0'
*/
export function hex(limit: number = 11): string {
return rand(16, limit)
}
/**
* Generates a random ID with 4 hexadecimal digits. It is just an alias for `hex(4)`.
*
* @export {function}
* @returns {string}
* @example
* import { id4 } from '@jsweb/randkey'
*
* id4() // 'f9c1'
*/
export function id4(): string {
return hex(4)
}
/**
* Generates a random ID with 8 hexadecimal digits. It is just an alias for `hex(8)`.
*
* @export {function}
* @returns {string}
* @example
* import { id8 } from '@jsweb/randkey'
*
* id8() // 'd74b8ed'
*/
export function id8(): string {
return hex(8)
}
/**
* Generates a random ID with 16 hexadecimal digits.
*
* @export {function}
* @returns {string}
* @example
* import { id16 } from '@jsweb/randkey'
*
* id16() // '6c1f3ac8e0ba611d'
*/
export function id16(): string {
return `${id8()}${id8()}`
}
/**
* Generates a random ID with 32 hexadecimal digits.
*
* @export {function}
* @returns {string}
* @example
* import { id32 } from '@jsweb/randkey'
*
* id32() // 'f17e3ac8e0ba925a61ed19016c1f2eb0'
*/
export function id32(): string {
return `${id16()}${id16()}`
}
/**
* Generates a random ID with 64 hexadecimal digits.
*
* @export {function}
* @returns {string}
* @example
* import { id64 } from '@jsweb/randkey'
*
* id64() // 'f17e3ac8e0ba925a61ed19016c1f2eb0f17e3ac8e0ba925a61ed19016c1f2eb0'
*/
export function id64(): string {
return `${id32()}${id32()}`
}
/**
* Generates a valid UUID v4 (RFC 4122 compliant).
*
* @export {function}
* @returns {string}
* @example
* import { uuid } from '@jsweb/randkey'
*
* uuid() // 'c30663ff-a2d3-4e5d-b377-9e561e8e599b'
*/
export function uuid(): string {
const rfc = [8, 9, 'a', 'b']
return [
id8(),
id4(),
`4${hex(3)}`,
`${getRandomItem(rfc)}${hex(3)}`,
`${hex(6)}${hex(6)}`,
].join('-')
}
/**
* Generates a random 5x5 ID with base2 progressive radix per block.
*
* @export {function}
* @returns {string}
* @example
* import { puid } from '@jsweb/randkey'
*
* puid() // 10100-13110-42720-98222-13prn
*/
export function puid(): string {
return [2, 4, 6, 8, 16].map((i) => rand(i, 5)).join('-')
}
/**
* Generates a random 5x5 ID using a common radix for all blocks using `rand(radix, 5)`.
* The `radix` parameter can be a number from 2 to 36. Default is 10, which generates base 10 random blocks.
*
* @export {function}
* @param {number} [radix=10] - Optional radix used to convert block numbers to string.
* @returns {string}
* @example
* import { ruid } from '@jsweb/randkey'
*
* ruid(8) // 15124-22432-17325-45517-15522
*/
export function ruid(radix: number = 10): string {
return Array(5)
.fill(radix)
.map((i) => rand(i, 5))
.join('-')
}
/**
* Generates a random 5x5 ID with hexadecimal blocks.
* It is just an alias for `ruid(16)`.
*
* @export {function}
* @returns {string}
* @example
* import { huid } from '@jsweb/randkey'
*
* huid() // d74b8-124e7-15854-15c73-82909
*/
export function huid(): string {
return ruid(16)
}
/**
* Generates a random 5x5 ID with alphanumerical blocks, like Windows Product Key.
* It is just an alias for `ruid(36)`.
*
* @export {function}
* @returns {string}
* @example
* import { wuid } from '@jsweb/randkey'
*
* wuid() // 7wuiu-e4fw7-ari12-3z50r-iv04x
*/
export function wuid(): string {
return ruid(36)
}
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