index: prevent blank exif indexing

Signed-off-by: Varun Patil <radialapps@gmail.com>

lib/Command/Index.php

@@ -123,9 +123,7 @@ class Index extends Command
         try {
             // Use static exiftool process
             \OCA\Memories\Exif::ensureStaticExiftoolProc();
-            if (!Service\BinExt::testExiftool()) { // throws
-                throw new \Exception('exiftool could not be executed or test failed');
-            }
+            Service\BinExt::testExiftool(); // throws
 
             // Perform steps based on opts
             $this->checkClear();

lib/Command/MigrateGoogleTakeout.php

@@ -25,6 +25,7 @@ namespace OCA\Memories\Command;
 
 use OCA\Memories\Db\TimelineWrite;
 use OCA\Memories\Exif;
+use OCA\Memories\Service;
 use OCP\Files\File;
 use OCP\Files\Folder;
 use OCP\Files\IRootFolder;
@@ -111,6 +112,7 @@ class MigrateGoogleTakeout extends Command
 
         // Start static exif process
         Exif::ensureStaticExiftoolProc();
+        Service\BinExt::testExiftool(); // throws
 
         // Call migration for each user
         if ($input->getOption('user')) {

lib/Cron/IndexJob.php

@@ -59,13 +59,23 @@ class IndexJob extends TimedJob
         // Index with static exiftool process
         // This is sub-optimal: the process may not be required at all.
         try {
+            // Start and make sure exiftool is working
             \OCA\Memories\Exif::ensureStaticExiftoolProc();
+            Service\BinExt::testExiftool(); // throws
+
+            // Run the indexer
             $this->indexAllUsers();
+
+            // Remove stale index entries
             $this->service->cleanupStale();
+
             $this->log('Indexing completed successfully', 'success');
         } catch (Service\ProcessClosedException $e) {
             $this->log('Indexing process stopped before completion. Will continue on next run', 'info');
+        } catch (\Exception $e) {
+            $this->log('Indexing exception: '.$e->getMessage());
         } finally {
+            // Close the static exiftool process
             \OCA\Memories\Exif::closeStaticExiftoolProc();
         }
 

lib/Db/TimelineWrite.php

@@ -91,10 +91,11 @@ class TimelineWrite
         }
 
         // Get exif data
-        try {
         $exif = Exif::getExifFromFile($file);
-        } catch (\Exception $e) {
-            $exif = [];
+
+        // Check if EXIF is blank, which is probably wrong
+        if (0 === \count($exif)) {
+            throw new \Exception('No EXIF data could be read: '.$file->getPath());
         }
 
         // Hand off if Live Photo video part