chris
2c78112a4f
Docker-ready Next.js + Prisma/Postgres e-invitation app: themed invite pages, RSVP, comments, share links, email + SMS invites with reply-to-RSVP-by-text, co-hosts, photo dropbox, and browser push notifications.
34 lines
1.3 KiB
TypeScript
34 lines
1.3 KiB
TypeScript
import type { RsvpStatus } from '@prisma/client';
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export type ParsedSmsRsvpReply = { status: RsvpStatus; numGuests: number };
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const YES_WORDS = new Set(['yes', 'y', 'yep', 'yeah', 'yup', 'ya']);
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const NO_WORDS = new Set(['no', 'n', 'nope', 'nah']);
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const MAYBE_WORDS = new Set(['maybe', 'perhaps', 'unsure', 'tentative', 'possibly']);
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/**
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* Parses a guest's free-form SMS reply into an RSVP status plus an optional
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* guest count (e.g. "YES 3", "no", "Maybe, 2 people"). Only the first word is
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* used to determine status - guests reply in all kinds of phrasing, but the
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* status word almost always leads. Returns null when no recognized status
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* word is found, so the caller can ask the guest to try again.
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*/
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export function parseSmsRsvpReply(rawBody: string): ParsedSmsRsvpReply | null {
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const body = rawBody.trim();
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if (!body) return null;
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const firstWord = body.toLowerCase().match(/[a-z']+/)?.[0];
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if (!firstWord) return null;
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let status: RsvpStatus;
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if (YES_WORDS.has(firstWord)) status = 'YES';
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else if (NO_WORDS.has(firstWord)) status = 'NO';
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else if (MAYBE_WORDS.has(firstWord)) status = 'MAYBE';
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else return null;
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const countMatch = body.match(/\d+/);
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const numGuests = countMatch ? Math.min(Math.max(parseInt(countMatch[0], 10), 1), 50) : 1;
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return { status, numGuests };
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}
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