From c3bb8f4aa406b4be8d3617d8858b2f73ad0583e1 Mon Sep 17 00:00:00 2001
From: Sam Wachspress <samuel.wachspress@northwestern.edu>
Date: Tue, 14 Sep 2021 15:32:04 -0500
Subject: [PATCH] migrate cloud function to separate repo

---
 .gcloudignore    | 12 ++++++++++++
 README.md        |  2 ++
 main.py          | 26 ++++++++++++++++++++++++++
 requirements.txt |  2 ++
 4 files changed, 42 insertions(+)
 create mode 100644 .gcloudignore
 create mode 100644 README.md
 create mode 100644 main.py
 create mode 100644 requirements.txt

diff --git a/.gcloudignore b/.gcloudignore
new file mode 100644
index 00000000..a55ed18e
--- /dev/null
+++ b/.gcloudignore
@@ -0,0 +1,12 @@
+# This file specifies files that are *not* uploaded to Google Cloud Platform
+# using gcloud. It follows the same syntax as .gitignore, with the addition of
+# "#!include" directives (which insert the entries of the given .gitignore-style
+# file at that point).
+#
+# For more information, run:
+#   $ gcloud topic gcloudignore
+#
+.gcloudignore
+# If you would like to upload your .git directory, .gitignore file or files
+# from your .gitignore file, remove the corresponding line
+# below:
diff --git a/README.md b/README.md
new file mode 100644
index 00000000..20d41b33
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# Generate Thumbnails
+Google Cloud Function to monitor photo directory of site content bucket and generate thumbnails when new images are added
diff --git a/main.py b/main.py
new file mode 100644
index 00000000..c8634d05
--- /dev/null
+++ b/main.py
@@ -0,0 +1,26 @@
+import re
+from wand.image import Image
+from google.cloud import storage
+
+client = storage.Client()
+
+def generate_thumbnails(data, context):
+  thumbnail_regex = "^photos\/Celegans\/.*\.thumb.(jpg|jpeg)$"
+  image_regex = "^photos\/Celegans\/.*\.(jpg|jpeg)$"
+
+  # Only generate thumbnails for matching paths
+  is_image = re.search(image_regex, data['name']) 
+  is_thumbnail = re.search(thumbnail_regex, data['name']) 
+
+  if (is_image and not is_thumbnail):
+    # Download the image and resize it
+    bucket = client.get_bucket(data['bucket'])
+    thumbnail = Image(blob=bucket.get_blob(data['name']).download_as_string())
+    thumbnail.transform(resize='x200')
+
+    # Upload the thumbnail with modified name
+    path = data['name'].rsplit('.', 1)
+    blob_name = path[0] + ".thumb." + path[1]
+    thumbnail_blob = bucket.blob(blob_name)
+    thumbnail_blob.upload_from_string(thumbnail.make_blob())
+    
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000..b7a466da
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+google-cloud-storage
+wand
\ No newline at end of file