# Copyright 2026 Google LLC

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

import os

import json

import urllib.request

import sys

def get_gemini_response(api_key, prompt):

# Using the stable Gemini 2.5 Flash

url = f"https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent?key={api_key}"

headers = {'Content-Type': 'application/json'}

data = {

"contents": [{

"parts": [{"text": prompt}]

}],

"generationConfig": {

"response_mime_type": "application/json"

}

}

req = urllib.request.Request(url, data=json.dumps(data).encode('utf-8'), headers=headers)

try:

with urllib.request.urlopen(req) as response:

res_data = json.loads(response.read().decode('utf-8'))

return res_data['candidates'][0]['content']['parts'][0]['text']

except urllib.error.HTTPError as e:

print(f"Gemini API Error ({e.code}): {e.reason}", file=sys.stderr)

try:

error_body = e.read().decode('utf-8')

print(f"Error details: {error_body}", file=sys.stderr)

except:

pass

return None

except Exception as e:

print(f"Error calling Gemini API: {e}", file=sys.stderr)

return None

def main():

api_key = os.getenv("GEMINI_API_KEY")

issue_title = os.getenv("ISSUE_TITLE")

issue_body = os.getenv("ISSUE_BODY")

if not api_key:

print("GEMINI_API_KEY not found", file=sys.stderr)

sys.exit(1)

if not issue_title and not issue_body:

print("Error: ISSUE_TITLE and ISSUE_BODY are both empty. Triage skipped.", file=sys.stderr)

sys.exit(0) # Exit gracefully so the workflow doesn't just fail without a reason

prompt = f"""

You are an expert software engineer and triage assistant.

Analyze the following GitHub Issue details and suggest appropriate labels.

Issue Title: {issue_title}

Issue Description: {issue_body}

Triage Criteria:

- Severity:

- priority: p0: Critical issues, crashes, security vulnerabilities (specifically if it mentions "crash" or "exception").

- priority: p1: Important issues that block release.

- priority: p2: Normal priority bugs or improvements.

- priority: p3: Minor enhancements or non-critical fixes.

- priority: p4: Low priority, nice-to-have eventually.

Return a JSON object with a 'labels' key containing an array of suggested label names.

The response MUST be valid JSON.

Example: {{"labels": ["priority: p2", "type: bug"]}}

"""

response_text = get_gemini_response(api_key, prompt)

if response_text:

try:

# Clean up response text in case it has markdown wrapping

if response_text.startswith("```json"):

response_text = response_text.replace("```json", "", 1).replace("```", "", 1).strip()

result = json.loads(response_text)

labels = result.get("labels", [])

# Print labels as a comma-separated string for GitHub Actions

print(",".join(labels))

except Exception as e:

print(f"Error parsing Gemini response: {e}", file=sys.stderr)

print(f"Raw response: {response_text}", file=sys.stderr)

sys.exit(1)

else:

sys.exit(1)

if __name__ == "__main__":

main()