better discord chat bridging

server/src/services/discordGuildStore.js

@@ -0,0 +1,82 @@
+const fs = require('fs');
+const path = require('path');
+const logger = require('../globals/logger').child('discordGuildStore');
+
+const DATA_DIR = path.join(__dirname, '..', '..', 'data');
+const STORE_PATH = path.join(DATA_DIR, 'discord-guilds.json');
+const VALID_MODES = new Set(['global', 'private']);
+
+let cache = null;
+
+function loadStore() {
+  if (cache) return cache;
+  try {
+    const raw = fs.readFileSync(STORE_PATH, 'utf8');
+    cache = JSON.parse(raw);
+  } catch (err) {
+    if (err.code !== 'ENOENT') {
+      logger.warn('Failed to load guild store', err.message);
+    }
+    cache = {};
+  }
+  return cache;
+}
+
+function saveStore(next) {
+  fs.mkdirSync(DATA_DIR, { recursive: true });
+  fs.writeFileSync(STORE_PATH, `${JSON.stringify(next, null, 2)}\n`, 'utf8');
+  cache = next;
+}
+
+function normalizeMode(input, fallback = 'global') {
+  const candidate = String(input || '').trim().toLowerCase();
+  if (VALID_MODES.has(candidate)) return candidate;
+  return fallback;
+}
+
+function listGuildConfigs() {
+  const store = loadStore();
+  return Object.values(store);
+}
+
+function getGuildConfig(guildId) {
+  if (!guildId) return null;
+  const store = loadStore();
+  return store[String(guildId)] || null;
+}
+
+function setGuildConfig(guildId, { channelId, mode }) {
+  if (!guildId) {
+    throw new Error('guildId required');
+  }
+  const store = { ...loadStore() };
+  const now = Date.now();
+  const key = String(guildId);
+  const prev = store[key] || null;
+  const next = {
+    guildId: key,
+    channelId: channelId != null ? String(channelId) : prev?.channelId || null,
+    mode: normalizeMode(mode, prev?.mode || 'global'),
+    createdAt: prev?.createdAt || now,
+    updatedAt: now,
+  };
+  store[key] = next;
+  saveStore(store);
+  return next;
+}
+
+function removeGuildConfig(guildId) {
+  if (!guildId) return;
+  const store = { ...loadStore() };
+  delete store[String(guildId)];
+  saveStore(store);
+}
+
+module.exports = {
+  getGuildConfig,
+  listGuildConfigs,
+  setGuildConfig,
+  removeGuildConfig,
+  normalizeMode,
+  VALID_MODES,
+};