server-ts: Port sync_options

src/services/sync_options.ts

@@ -0,0 +1,30 @@
+"use strict";
+
+import optionService = require('./options');
+import config = require('./config');
+
+/*
+ * Primary configuration for sync is in the options (document), but we allow to override
+ * these settings in config file. The reason for that is to avoid a mistake of loading a live/production
+ * document with live sync settings in a dev/debug environment. Changes would then successfully propagate
+ * to live sync server.
+ */
+
+function get(name: string) {
+    return (config['Sync'] && config['Sync'][name]) || optionService.getOption(name);
+}
+
+export = {
+    // env variable is the easiest way to guarantee we won't overwrite prod data during development
+    // after copying prod document/data directory
+    getSyncServerHost: () => process.env.TRILIUM_SYNC_SERVER_HOST || get('syncServerHost'),
+    isSyncSetup: () => {
+        const syncServerHost = get('syncServerHost');
+
+        // special value "disabled" is here to support a use case where the document is configured with sync server,
+        // and we need to override it with config from config.ini
+        return !!syncServerHost && syncServerHost !== 'disabled';
+    },
+    getSyncTimeout: () => parseInt(get('syncServerTimeout')) || 120000,
+    getSyncProxy: () => get('syncProxy')
+};