fix(server): harden inserting process, self-healing timestamp info on bad timestamp (#682)

* fix(server): harden inserting process, self-healing timestamp info

server/libs/common/src/index.ts

@@ -1,2 +1,3 @@
 export * from './config';
 export * from './constants';
+export * from './utils';

server/libs/common/src/utils/index.ts

@@ -0,0 +1 @@
+export * from './time-utils';

server/libs/common/src/utils/time-utils.spec.ts

@@ -0,0 +1,37 @@
+// create unit test for time utils
+
+import { timeUtils } from './time-utils';
+
+describe('Time Utilities', () => {
+  describe('checkValidTimestamp', () => {
+    it('check for year 0000', () => {
+      const result = timeUtils.checkValidTimestamp('0000-00-00T00:00:00.000Z');
+      expect(result).toBeFalsy();
+    });
+
+    it('check for 6-digits year with plus sign', () => {
+      const result = timeUtils.checkValidTimestamp('+12345-00-00T00:00:00.000Z');
+      expect(result).toBeFalsy();
+    });
+
+    it('check for 6-digits year with negative sign', () => {
+      const result = timeUtils.checkValidTimestamp('-12345-00-00T00:00:00.000Z');
+      expect(result).toBeFalsy();
+    });
+
+    it('check for current date', () => {
+      const result = timeUtils.checkValidTimestamp(new Date().toISOString());
+      expect(result).toBeTruthy();
+    });
+
+    it('check for year before 1583', () => {
+      const result = timeUtils.checkValidTimestamp('1582-12-31T23:59:59.999Z');
+      expect(result).toBeFalsy();
+    });
+
+    it('check for year after 9999', () => {
+      const result = timeUtils.checkValidTimestamp('10000-00-00T00:00:00.000Z');
+      expect(result).toBeFalsy();
+    });
+  });
+});

server/libs/common/src/utils/time-utils.ts

@@ -0,0 +1,48 @@
+import exifr from 'exifr';
+
+function createTimeUtils() {
+  const checkValidTimestamp = (timestamp: string): boolean => {
+    const parsedTimestamp = Date.parse(timestamp);
+
+    if (isNaN(parsedTimestamp)) {
+      return false;
+    }
+
+    const date = new Date(parsedTimestamp);
+
+    if (date.getFullYear() < 1583 || date.getFullYear() > 9999) {
+      return false;
+    }
+
+    return date.getFullYear() > 0;
+  };
+
+  const getTimestampFromExif = async (originalPath: string): Promise<string> => {
+    try {
+      const exifData = await exifr.parse(originalPath, {
+        tiff: true,
+        ifd0: true as any,
+        ifd1: true,
+        exif: true,
+        gps: true,
+        interop: true,
+        xmp: true,
+        icc: true,
+        iptc: true,
+        jfif: true,
+        ihdr: true,
+      });
+
+      if (exifData && exifData['DateTimeOriginal']) {
+        return exifData['DateTimeOriginal'];
+      } else {
+        return new Date().toISOString();
+      }
+    } catch (error) {
+      return new Date().toISOString();
+    }
+  };
+  return { checkValidTimestamp, getTimestampFromExif };
+}
+
+export const timeUtils = createTimeUtils();