server-ts: Convert routes/api/backend_log

src/routes/api/backend_log.ts

@@ -0,0 +1,22 @@
+"use strict";
+
+import fs = require('fs');
+import dateUtils = require('../../services/date_utils');
+import dataDir = require('../../services/data_dir.js');
+const { LOG_DIR } = dataDir;
+
+function getBackendLog() {
+    const file = `${LOG_DIR}/trilium-${dateUtils.localNowDate()}.log`;
+
+    try {
+        return fs.readFileSync(file, 'utf8');
+    }
+    catch (e) {
+        // most probably the log file does not exist yet - https://github.com/zadam/trilium/issues/1977
+        return "";
+    }
+}
+
+export = {
+    getBackendLog
+};