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import argparse
import asyncio
import re
import sys
from datetime import datetime
from typing import Dict, List, Optional, Tuple
import httpx
REPOSITORY = "https://github.com/freedomofpress/dangerzone/"
TEMPLATE = "- {title} ([#{number}]({url}))"
def parse_version(version: str) -> Tuple[int, int]:
"""Extract major.minor from version string, ignoring patch"""
match = re.match(r"v?(\d+)\.(\d+)", version)
if not match:
raise ValueError(f"Invalid version format: {version}")
return (int(match.group(1)), int(match.group(2)))
async def get_last_minor_release(
client: httpx.AsyncClient, owner: str, repo: str
) -> Optional[str]:
"""Get the latest minor release date (ignoring patches)"""
response = await client.get(f"https://api.github.com/repos/{owner}/{repo}/releases")
response.raise_for_status()
releases = response.json()
if not releases:
return None
# Get the latest minor version by comparing major.minor numbers
current_version = parse_version(releases[0]["tag_name"])
latest_date = None
for release in releases:
try:
version = parse_version(release["tag_name"])
if version < current_version:
latest_date = release["published_at"]
break
except ValueError:
continue
return latest_date
async def get_issue_details(
client: httpx.AsyncClient, owner: str, repo: str, issue_number: int
) -> Optional[dict]:
"""Get issue title and number if it exists"""
response = await client.get(
f"https://api.github.com/repos/{owner}/{repo}/issues/{issue_number}"
)
if response.is_success:
data = response.json()
return {
"title": data["title"],
"number": data["number"],
"url": data["html_url"],
}
return None
def extract_issue_number(pr_body: Optional[str]) -> Optional[int]:
"""Extract issue number from PR body looking for common formats like 'Fixes #123' or 'Closes #123'"""
if not pr_body:
return None
patterns = [
r"(?:closes|fixes|resolves)\s*#(\d+)",
r"(?:close|fix|resolve)\s*#(\d+)",
]
for pattern in patterns:
match = re.search(pattern, pr_body.lower())
if match:
return int(match.group(1))
return None
async def verify_commit_in_master(
client: httpx.AsyncClient, owner: str, repo: str, commit_id: str
) -> bool:
"""Verify if a commit exists in master"""
response = await client.get(
f"https://api.github.com/repos/{owner}/{repo}/commits/{commit_id}"
)
return response.is_success and response.json().get("commit") is not None
async def process_issue_events(
client: httpx.AsyncClient, owner: str, repo: str, issue: Dict
) -> Optional[Dict]:
"""Process events for a single issue"""
events_response = await client.get(f"{issue['url']}/events")
if not events_response.is_success:
return None
for event in events_response.json():
if event["event"] == "closed" and event.get("commit_id"):
if await verify_commit_in_master(client, owner, repo, event["commit_id"]):
return {
"title": issue["title"],
"number": issue["number"],
"url": issue["html_url"],
}
return None
async def get_closed_issues(
client: httpx.AsyncClient, owner: str, repo: str, since: str
) -> List[Dict]:
"""Get issues closed by commits to master since the given date"""
response = await client.get(
f"https://api.github.com/repos/{owner}/{repo}/issues",
params={
"state": "closed",
"sort": "updated",
"direction": "desc",
"since": since,
"per_page": 100,
},
)
response.raise_for_status()
tasks = []
since_date = datetime.strptime(since, "%Y-%m-%dT%H:%M:%SZ")
for issue in response.json():
if "pull_request" in issue:
continue
closed_at = datetime.strptime(issue["closed_at"], "%Y-%m-%dT%H:%M:%SZ")
if closed_at <= since_date:
continue
tasks.append(process_issue_events(client, owner, repo, issue))
results = await asyncio.gather(*tasks)
return [r for r in results if r is not None]
async def process_pull_request(
client: httpx.AsyncClient,
owner: str,
repo: str,
pr: Dict,
closed_issues: List[Dict],
) -> Optional[str]:
"""Process a single pull request"""
issue_number = extract_issue_number(pr.get("body"))
if issue_number:
issue = await get_issue_details(client, owner, repo, issue_number)
if issue:
if not any(i["number"] == issue["number"] for i in closed_issues):
return TEMPLATE.format(**issue)
return None
return TEMPLATE.format(title=pr["title"], number=pr["number"], url=pr["html_url"])
async def get_changes_since_last_release(
owner: str, repo: str, token: Optional[str] = None
) -> List[str]:
headers = {
"Accept": "application/vnd.github.v3+json",
}
if token:
headers["Authorization"] = f"token {token}"
else:
print(
"Warning: No token provided. API rate limiting may occur.", file=sys.stderr
)
async with httpx.AsyncClient(headers=headers, timeout=30.0) as client:
# Get the date of last minor release
since = await get_last_minor_release(client, owner, repo)
if not since:
return []
changes = []
# Get issues closed by commits to master
closed_issues = await get_closed_issues(client, owner, repo, since)
changes.extend([TEMPLATE.format(**issue) for issue in closed_issues])
# Get merged PRs
response = await client.get(
f"https://api.github.com/repos/{owner}/{repo}/pulls",
params={
"state": "closed",
"sort": "updated",
"direction": "desc",
"per_page": 100,
},
)
response.raise_for_status()
# Process PRs in parallel
pr_tasks = []
for pr in response.json():
if not pr["merged_at"]:
continue
if since and pr["merged_at"] <= since:
break
pr_tasks.append(
process_pull_request(client, owner, repo, pr, closed_issues)
)
pr_results = await asyncio.gather(*pr_tasks)
changes.extend([r for r in pr_results if r is not None])
return changes
async def main_async():
parser = argparse.ArgumentParser(description="Generate release notes from GitHub")
parser.add_argument("--token", "-t", help="GitHub API token")
args = parser.parse_args()
try:
url_path = REPOSITORY.rstrip("/").split("github.com/")[1]
owner, repo = url_path.split("/")[-2:]
except (ValueError, IndexError):
print("Error: Invalid GitHub URL", file=sys.stderr)
sys.exit(1)
try:
notes = await get_changes_since_last_release(owner, repo, args.token)
print("\n".join(notes))
except httpx.HTTPError as e:
print(f"Error: {e}", file=sys.stderr)
sys.exit(1)
except Exception as e:
print(f"Error: {e}", file=sys.stderr)
sys.exit(1)
def main():
asyncio.run(main_async())
if __name__ == "__main__":
main()

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@ -56,6 +56,9 @@ pytest-subprocess = "^1.5.2"
[tool.poetry.group.container.dependencies]
pymupdf = "1.24.11" # Last version to support python 3.8 (needed for Ubuntu Focal support)
[tool.poetry.group.dev.dependencies]
httpx = "^0.27.2"
[tool.isort]
profile = "black"
skip_gitignore = true