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const BASE62_ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
/**
* Convert a base 10 integer to a base 62 string.
* @param num - The base 10 integer to convert.
* @returns The base 62 string representation of the number.
*/
function base10ToBase62( num: number ) {
let result = '';
while ( num > 0 ) {
result = BASE62_ALPHABET[ num % 62 ] + result;
num = Math.floor( num / 62 );
}
return result || '0';
}
/**
* Create a two-character long alphanumerical unique session ID.
* Two characters is short enough to not be ugly and create accidental offensive words, but long enough to contain 3782 enumerations.
*/
export function createSessionId() {
const minNumberForTwoLettersBase62 = 62;
const maxNumberForTwoLettersBase62 = 3844;
const seed =
minNumberForTwoLettersBase62 + Math.floor( Math.random() * maxNumberForTwoLettersBase62 );
return base10ToBase62( seed );
}
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