Add short gallery URL toggle and token support (#38)

backend/src/services/shareLinkService.js

@@ -0,0 +1,181 @@
+const { db } = require('../database/db');
+const { formatBoolean } = require('../utils/dbCompat');
+const { extractShareToken, isPotentialShareToken, buildSharePath } = require('../utils/shareLinkUtils');
+
+const SETTING_KEY = 'general_short_gallery_urls';
+const CACHE_TTL_MS = 60_000;
+
+let cachedSetting = null;
+let cacheExpiresAt = 0;
+
+const parseSettingValue = (rawValue) => {
+  if (rawValue === undefined || rawValue === null) {
+    return null;
+  }
+
+  if (typeof rawValue === 'boolean') {
+    return rawValue;
+  }
+
+  if (typeof rawValue === 'number') {
+    return rawValue !== 0;
+  }
+
+  if (typeof rawValue === 'string') {
+    const trimmed = rawValue.trim();
+    if (!trimmed) {
+      return null;
+    }
+
+    try {
+      const parsed = JSON.parse(trimmed);
+      return parseSettingValue(parsed);
+    } catch {
+      const normalized = trimmed.toLowerCase();
+      if (normalized === 'true' || normalized === '1' || normalized === 'yes') {
+        return true;
+      }
+      if (normalized === 'false' || normalized === '0' || normalized === 'no') {
+        return false;
+      }
+      return null;
+    }
+  }
+
+  if (typeof rawValue === 'object') {
+    try {
+      return parseSettingValue(JSON.parse(JSON.stringify(rawValue)));
+    } catch {
+      return null;
+    }
+  }
+
+  return null;
+};
+
+const getRawSettingValue = async () => {
+  try {
+    const setting = await db('app_settings').where({ setting_key: SETTING_KEY }).first();
+    return setting?.setting_value ?? null;
+  } catch (error) {
+    console.error('Failed to read gallery URL setting:', error.message);
+    return null;
+  }
+};
+
+const isShortGalleryUrlsEnabled = async () => {
+  if (cachedSetting !== null && Date.now() < cacheExpiresAt) {
+    return cachedSetting;
+  }
+
+  const rawValue = await getRawSettingValue();
+  const parsed = parseSettingValue(rawValue);
+  cachedSetting = parsed === null ? false : Boolean(parsed);
+  cacheExpiresAt = Date.now() + CACHE_TTL_MS;
+  return cachedSetting;
+};
+
+const clearShareLinkSettingsCache = () => {
+  cachedSetting = null;
+  cacheExpiresAt = 0;
+};
+
+const buildShareLinkVariants = async ({ slug, shareToken }) => {
+  if (!shareToken) {
+    throw new Error('shareToken is required to build share link variants');
+  }
+
+  const shortEnabled = await isShortGalleryUrlsEnabled();
+  const sharePath = buildSharePath(slug, shareToken, shortEnabled);
+  const frontendBase = (process.env.FRONTEND_URL || '').replace(/\/$/, '');
+  const shareUrl = frontendBase ? `${frontendBase}${sharePath}` : sharePath;
+
+  return {
+    shortEnabled,
+    sharePath,
+    shareUrl,
+    shareLinkToStore: sharePath
+  };
+};
+
+const getEventShareToken = (event) => {
+  if (!event) {
+    return null;
+  }
+
+  if (event.share_token) {
+    return event.share_token;
+  }
+
+  return extractShareToken(event.share_link);
+};
+
+const ACTIVE_EVENT_FILTER = {
+  is_active: formatBoolean(true),
+  is_archived: formatBoolean(false)
+};
+
+const resolveShareIdentifier = async (identifier) => {
+  if (!identifier) {
+    return null;
+  }
+
+  const trimmed = String(identifier).trim();
+  if (!trimmed) {
+    return null;
+  }
+
+  const baseQuery = db('events')
+    .select(
+      'id',
+      'slug',
+      'share_link',
+      'share_token',
+      'require_password',
+      'event_name',
+      'event_type',
+      'event_date',
+      'expires_at',
+      'is_active',
+      'is_archived'
+    )
+    .where(ACTIVE_EVENT_FILTER);
+
+  let event = await baseQuery.clone().where({ slug: trimmed }).first();
+  if (event) {
+    return { event, matchType: 'slug', shareToken: getEventShareToken(event) };
+  }
+
+  event = await baseQuery.clone().where({ share_token: trimmed }).first();
+  if (event) {
+    return { event, matchType: 'token', shareToken: getEventShareToken(event) };
+  }
+
+  event = await baseQuery.clone().where({ share_link: trimmed }).first();
+  if (event) {
+    return { event, matchType: 'link', shareToken: getEventShareToken(event) };
+  }
+
+  event = await baseQuery.clone().where('share_link', 'like', `%/${trimmed}`).first();
+  if (event) {
+    return { event, matchType: 'link_partial', shareToken: getEventShareToken(event) };
+  }
+
+  // As a final fallback, if identifier looks like a token but we did not match via share_token
+  if (isPotentialShareToken(trimmed)) {
+    event = await baseQuery.clone().whereRaw('LOWER(share_token) = ?', [trimmed.toLowerCase()]).first();
+    if (event) {
+      return { event, matchType: 'token_case_insensitive', shareToken: getEventShareToken(event) };
+    }
+  }
+
+  return null;
+};
+
+module.exports = {
+  isShortGalleryUrlsEnabled,
+  clearShareLinkSettingsCache,
+  buildShareLinkVariants,
+  getEventShareToken,
+  resolveShareIdentifier
+};