byGalax
61 lines
2.2 KiB
TypeScript
61 lines
2.2 KiB
TypeScript
import type { AppSupabaseClient } from '../supabase/client';
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// `@anna_b` style — letters, digits, underscore, dot, dash, 2-32 chars.
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// Conservative on purpose: false negatives (a real username we don't match)
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// are recoverable (no notification fires); false positives (matching a
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// non-username) just become an INSERT that the FK check rejects.
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const MENTION_RE = /(?:^|[\s,;:!?(])@([a-zA-Z0-9_.-]{2,32})/g;
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export function parseMentionUsernames(plaintext: string): string[] {
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const out = new Set<string>();
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for (const m of plaintext.matchAll(MENTION_RE)) {
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if (m[1]) out.add(m[1].toLowerCase());
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}
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return [...out];
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}
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export interface MentionResolver {
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// Resolves an array of @usernames in this conversation to user-ids.
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// Returns only memberships that exist + are accepted.
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resolveUsernames(conversationId: string, usernames: string[]): Promise<Map<string, string>>;
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}
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export function makeMentionResolver(client: AppSupabaseClient): MentionResolver {
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return {
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async resolveUsernames(conversationId, usernames) {
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if (usernames.length === 0) return new Map();
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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const { data, error } = await (client as any)
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.from('conversation_members')
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.select('user_id, accepted, profiles!inner(username)')
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.eq('conversation_id', conversationId)
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.eq('accepted', true)
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.in('profiles.username', usernames);
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if (error) throw error;
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const out = new Map<string, string>();
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for (const row of (data ?? []) as Array<{ user_id: string; profiles: { username: string } }>) {
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out.set(row.profiles.username.toLowerCase(), row.user_id);
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}
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return out;
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},
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};
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}
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export async function insertMentions(
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client: AppSupabaseClient,
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messageId: string,
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conversationId: string,
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mentionedUserIds: string[],
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): Promise<void> {
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if (mentionedUserIds.length === 0) return;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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const { error } = await (client as any).from('message_mentions').insert(
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mentionedUserIds.map((uid) => ({
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message_id: messageId,
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mentioned_user_id: uid,
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conversation_id: conversationId,
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})),
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);
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if (error) throw error;
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}
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