add Google Cloud Function for converting HEIC to JPEG

cloud-function/main.py

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+import functions_framework
+import pyheif
+from PIL import Image
+import io
+from flask import send_file, request, abort
+
+import os
+SECRET_TOKEN = os.getenv('SECRET_TOKEN')
+
+@functions_framework.http
+def convert_heic_to_jpg(request):
+    if request.headers.get('Authorization') != f"Bearer {SECRET_TOKEN}":
+        abort(403)
+
+    if 'file' not in request.files:
+        return 'No file part', 400
+
+    file = request.files['file']
+
+    if file.filename == '':
+        return 'No selected file', 400
+
+    try:
+        heif_file = pyheif.read_heif(io.BytesIO(file.read()))
+        image = Image.frombytes(
+            heif_file.mode,
+            heif_file.size,
+            heif_file.data,
+            "raw",
+            heif_file.mode,
+            heif_file.stride,
+        )
+
+        output = io.BytesIO()
+        image.save(output, format="JPEG")  # Use 'JPEG' instead of 'JPG'
+        output.seek(0)
+
+        return send_file(output, mimetype='image/jpeg', as_attachment=True, download_name='converted.jpg')
+
+    except Exception as e:
+        return str(e), 500

cloud-function/requirements.txt

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+Flask==2.0.2
+functions-framework==3.0.0
+pyheif==0.6.1
+Pillow==8.4.0
+Werkzeug==2.0.2