style: format code with Autopep8, Black, ClangFormat, dotnet-format, …

…Go fmt, Gofumpt, Google Java Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt, Scalafmt, StandardJS, StandardRB, swift-format and Yapf

This commit fixes the style issues introduced in 573789a according to the output
from Autopep8, Black, ClangFormat, dotnet-format, Go fmt, Gofumpt, Google Java
Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt,
Scalafmt, StandardJS, StandardRB, swift-format and Yapf.

Details: None

app/routes/api.py

@@ -1,29 +1,32 @@
 # API routes
-from flask import Blueprint, request, jsonify
-from app.services.ipfs import IPFS
-from app.services.encryption import encrypt_file
+from flask import Blueprint, jsonify, request
+
 from app.models import File, User
+from app.services.encryption import encrypt_file
+from app.services.ipfs import IPFS
+
+api = Blueprint("api", __name__)
 
-api = Blueprint('api', __name__)
 
-@api.route('/files', methods=['POST'])
+@api.route("/files", methods=["POST"])
 def upload_file():
-    file = request.files['file']
-    user = User.query.filter_by(username=request.form['username']).first()
+    file = request.files["file"]
+    user = User.query.filter_by(username=request.form["username"]).first()
     if user:
         encrypted_file = encrypt_file(file)
         ipfs_hash = IPFS.add(encrypted_file)
         file = File(name=file.filename, content=ipfs_hash, user=user)
         db.session.add(file)
         db.session.commit()
-        return jsonify({'message': 'File uploaded successfully'})
-    return jsonify({'message': 'User not found'}), 404
+        return jsonify({"message": "File uploaded successfully"})
+    return jsonify({"message": "User not found"}), 404
+
 
-@api.route('/files/<string:ipfs_hash>', methods=['GET'])
+@api.route("/files/<string:ipfs_hash>", methods=["GET"])
 def download_file(ipfs_hash):
     file = File.query.filter_by(ipfs_hash=ipfs_hash).first()
     if file:
         encrypted_file = IPFS.get(ipfs_hash)
         decrypted_file = decrypt_file(encrypted_file)
         return send_file(decrypted_file, as_attachment=True)
-    return jsonify({'message': 'File not found'}), 404
+    return jsonify({"message": "File not found"}), 404