29: Gracefully handle when there is no project or file

src/Command/GetCommand.php

@@ -115,8 +115,17 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
 
         try {
+            if ($this->storage->checkIfProjectExists($project) === false) {
+                $output->writeln(sprintf("<error>Requested project does not exist: %s </error>", $project));
+                return static::RETURN_CODE_DOWNLOAD_ERROR;
+            }
+
             if (!$file) {
                 $file = $this->storage->getLatestFile($project);
+                if (!$file) {
+                    $output->writeln(sprintf("<error>Requested file does not exist: %s </error>", $file));
+                    return static::RETURN_CODE_DOWNLOAD_ERROR;
+                }
             }
 
             $output->writeln(

src/Service/Storage/S3.php

@@ -353,4 +353,32 @@ public function setLogger(LoggerInterface $logger)
     {
         $this->logger = $logger;
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function checkIfFileExists($file, $project)
+    {
+        $bucket = $this->getBucket();
+        $key = $this->getFileKey($project, $file);
+
+        try {
+            return $this->getClient()->doesObjectExist($bucket, $key);
+        } catch (\Exception $e) {
+            throw new ServiceException($e->getMessage());
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function checkIfProjectExists($project)
+    {
+        $bucket = $this->getBucket();
+        try {
+            return $this->getClient()->doesObjectExist($bucket, $project);
+        } catch (\Exception $e) {
+            throw new ServiceException($e->getMessage());
+        }
+    }
 }

src/Service/StorageInterface.php

@@ -81,4 +81,22 @@ public function delete($project, $file);
      * @return void
      */
     public function clean($project, $keep = 5);
+
+    /**
+     * Check if the given file exists for the project to allow us to gracefully handle files that don't
+     *
+     * @param string $file The file to check the project for
+     * @param string $project The project to check
+     *
+     * @return bool
+     */
+    public function checkIfFileExists($file, $project);
+
+    /**
+     * Check if the given project exists to allow us to gracefully handle projects that don't
+     *
+     * @param $project
+     * @return bool
+     */
+    public function checkIfProjectExists($project);
 }