diff options
| -rw-r--r-- | api/src/util/RandomInviteID.ts | 19 | ||||
| -rw-r--r-- | util/src/util/Snowflake.ts | 11 |
2 files changed, 26 insertions, 4 deletions
diff --git a/api/src/util/RandomInviteID.ts b/api/src/util/RandomInviteID.ts index b37994d8..45450b0d 100644 --- a/api/src/util/RandomInviteID.ts +++ b/api/src/util/RandomInviteID.ts @@ -1,3 +1,5 @@ +import { Snowflake } from "@fosscord/util"; + export function random(length = 6) { // Declare all characters let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; @@ -10,3 +12,20 @@ export function random(length = 6) { return str; } + +export function snowflakeBasedInvite() { + // Declare all characters + let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; + + let snowflake = Snowflake.generateWorkerProcess(); + + // snowflakes hold ~10.75 characters worth of entropy; + // safe to generate a 8-char invite out of them + let str = ""; + for (let i=0; i < 10; i++) { + str += chars.charAt((snowflake % chars.length)); + snowflake /= chars.length; + } + + return str.substr(3,8).reverse(); // little-endianise for entropy +} diff --git a/util/src/util/Snowflake.ts b/util/src/util/Snowflake.ts index 3f6e3c63..134d526e 100644 --- a/util/src/util/Snowflake.ts +++ b/util/src/util/Snowflake.ts @@ -21,7 +21,7 @@ export class Snowflake { } /** - * A Twitter snowflake, except the epoch is 2015-01-01T00:00:00.000Z + * A Twitter-like snowflake, except the epoch is 2015-01-01T00:00:00.000Z * ``` * If we have a snowflake '266241948824764416' we can represent it as binary: * @@ -83,14 +83,17 @@ export class Snowflake { return dec; } - static generate() { + static generateWorkerProcess() { // worker process - returns a number var time = BigInt(Date.now() - Snowflake.EPOCH) << BigInt(22); var worker = Snowflake.workerId << 17n; var process = Snowflake.processId << 12n; var increment = Snowflake.INCREMENT++; - return (time | worker | process | increment).toString(); + return BigInt(time | worker | process | increment); + } + + static generate() { + return Snowflake.generateWorkerProcess().toString(); } - /** * A deconstructed snowflake. * @typedef {Object} DeconstructedSnowflake |