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tiennm99
90cd679639
A /rules page says, in one place, what nothing in the app said before: the chain rule, the clock, what a dead end costs, elimination and the last player standing, how a word is scored and the reconnect window. Linked from the landing page and from the board and lobby headers. The chat control moves above the chain as a pill with the unread count, where it can be reached on a phone mid-game, and the lobby's folded chat now carries an unread badge too. ESLint with the Svelte and JSDoc plugins, run in CI; the real findings it turned up (missing each keys, untyped timer handles) are fixed.
53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
/**
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* Room codes as the client has to handle them: typed by hand, or pasted from a
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* chat message.
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*
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* The alphabet mirrors the server's. It omits 0/O and 1/I/L because those are
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* the pairs people get wrong when reading a code out. A test checks this
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* against the Go constant rather than trusting the copy.
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*/
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export const ROOM_CODE_ALPHABET = '23456789ABCDEFGHJKMNPQRSTUVWXYZ';
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export const ROOM_CODE_LENGTH = 6;
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/** Pulls the code out of a pasted invite link. */
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const LINK_CODE = /[?&]code=([^&#\s]+)/i;
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/** Separators people put inside or around a code when writing it down. */
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const SEPARATORS = /[\s._-]+/g;
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/**
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* Turns whatever arrived into what the server would recognise.
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*
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* Two shapes are worth handling, because they are the two ways a code reaches
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* a player: the code itself, in any case and spaced or hyphenated for reading,
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* and a whole invite link pasted from a message.
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*
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* Only separators are removed. Dropping every character outside the alphabet
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* instead would turn any sentence into six plausible letters, and the player
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* would be told the room does not exist rather than that they pasted the wrong
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* thing.
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* @param {string} raw
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* @returns {string}
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*/
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export function normalizeRoomCode(raw) {
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const text = String(raw ?? '').trim();
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const link = text.match(LINK_CODE);
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const source = link ? link[1] : text;
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return source.replace(SEPARATORS, '').toUpperCase();
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}
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/**
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* Whether a normalized code is worth sending. Checking here saves a round trip
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* and, more usefully, tells the player which of the two failures they have:
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* a malformed code, or a room that is not there.
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* @param {string} code
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* @returns {boolean}
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*/
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export function isRoomCode(code) {
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return (
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code.length === ROOM_CODE_LENGTH && [...code].every((ch) => ROOM_CODE_ALPHABET.includes(ch))
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);
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}
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