Files
stack/packages/mosaic/framework/tools/git/pr-review.sh
2026-07-20 00:54:18 -05:00

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#!/bin/bash
# pr-review.sh - Review a pull request on GitHub or Gitea
# Usage: pr-review.sh -n <pr_number> -a <action> [-c <comment>]
set -e
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=packages/mosaic/framework/tools/git/detect-platform.sh
source "$SCRIPT_DIR/detect-platform.sh"
# Parse arguments
PR_NUMBER=""
ACTION=""
COMMENT=""
while [[ $# -gt 0 ]]; do
case $1 in
-n|--number)
PR_NUMBER="$2"
shift 2
;;
-a|--action)
ACTION="$2"
shift 2
;;
-c|--comment)
COMMENT="$2"
shift 2
;;
-h|--help)
echo "Usage: pr-review.sh -n <pr_number> -a <action> [-c <comment>]"
echo ""
echo "Options:"
echo " -n, --number PR number (required)"
echo " -a, --action Review action: approve, request-changes, comment (required)"
echo " -c, --comment Review comment (required for request-changes)"
echo " -h, --help Show this help"
exit 0
;;
*)
echo "Unknown option: $1"
exit 1
;;
esac
done
if [[ -z "$PR_NUMBER" ]]; then
echo "Error: PR number is required (-n)"
exit 1
fi
if [[ -z "$ACTION" ]]; then
echo "Error: Action is required (-a): approve, request-changes, comment"
exit 1
fi
detect_platform >/dev/null
if [[ "$PLATFORM" == "github" ]]; then
case $ACTION in
approve)
gh pr review "$PR_NUMBER" --approve ${COMMENT:+--body "$COMMENT"}
echo "Approved GitHub PR #$PR_NUMBER"
;;
request-changes)
if [[ -z "$COMMENT" ]]; then
echo "Error: Comment required for request-changes"
exit 1
fi
gh pr review "$PR_NUMBER" --request-changes --body "$COMMENT"
echo "Requested changes on GitHub PR #$PR_NUMBER"
;;
comment)
if [[ -z "$COMMENT" ]]; then
echo "Error: Comment required"
exit 1
fi
gh pr review "$PR_NUMBER" --comment --body "$COMMENT"
echo "Added review comment to GitHub PR #$PR_NUMBER"
;;
*)
echo "Error: Unknown action: $ACTION"
exit 1
;;
esac
elif [[ "$PLATFORM" == "gitea" ]]; then
case $ACTION in
approve)
repo=$(get_repo_slug)
host=$(get_remote_host)
login=$(get_gitea_login_for_host "$host")
tea pr approve "$PR_NUMBER" --repo "$repo" --login "$login" ${COMMENT:+--comment "$COMMENT"}
echo "Approved Gitea PR #$PR_NUMBER"
;;
request-changes)
if [[ -z "$COMMENT" ]]; then
echo "Error: Comment required for request-changes"
exit 1
fi
repo=$(get_repo_slug)
host=$(get_remote_host)
login=$(get_gitea_login_for_host "$host")
tea pr reject "$PR_NUMBER" --repo "$repo" --login "$login" --comment "$COMMENT"
echo "Requested changes on Gitea PR #$PR_NUMBER"
;;
comment)
if [[ -z "$COMMENT" ]]; then
echo "Error: Comment required"
exit 1
fi
repo=$(get_repo_slug)
host=$(get_remote_host)
token=$(get_gitea_token "$host") || {
echo "Error: Gitea token not found for comment persistence" >&2
exit 1
}
configured_url=$(get_gitea_url_for_host "$host") || {
echo "Error: Configured Gitea URL not found for comment persistence" >&2
exit 1
}
api_base="${configured_url%/}/api/v1/repos/$repo"
payload=$(COMMENT_BODY="$COMMENT" python3 -c '
import json
import os
print(json.dumps({"body": os.environ["COMMENT_BODY"]}))
')
write_response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-write.XXXXXX")
readback_response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-readback.XXXXXX")
trap 'rm -f "$write_response_file" "$readback_response_file"' EXIT
if ! write_status=$(curl -sS -o "$write_response_file" -w '%{http_code}' \
-X POST \
-H "Authorization: token $token" \
-H 'Content-Type: application/json' \
-d "$payload" \
"$api_base/issues/$PR_NUMBER/comments"); then
echo "Error: Gitea comment write transport failed" >&2
exit 1
fi
if [[ "$write_status" != "201" ]]; then
echo "Error: Gitea comment write failed with HTTP $write_status" >&2
exit 1
fi
comment_id=$(python3 - "$write_response_file" <<'PY'
import json
import sys
try:
with open(sys.argv[1], encoding="utf-8") as response:
comment = json.load(response)
comment_id = comment.get("id") if isinstance(comment, dict) else None
if not isinstance(comment_id, int) or comment_id <= 0:
raise ValueError("missing positive comment id")
except (OSError, json.JSONDecodeError, ValueError) as error:
print(f"Error: could not identify created Gitea comment: {error}", file=sys.stderr)
raise SystemExit(1)
print(comment_id)
PY
)
if ! readback_status=$(curl -sS -o "$readback_response_file" -w '%{http_code}' \
-H "Authorization: token $token" \
"$api_base/issues/comments/$comment_id"); then
echo "Error: Gitea comment read-back transport failed" >&2
exit 1
fi
if [[ "$readback_status" != "200" ]]; then
echo "Error: Gitea comment read-back failed with HTTP $readback_status" >&2
exit 1
fi
EXPECTED_COMMENT_ID="$comment_id" EXPECTED_COMMENT_BODY="$COMMENT" EXPECTED_REPO="$repo" EXPECTED_PR_NUMBER="$PR_NUMBER" \
python3 - "$readback_response_file" <<'PY'
import json
import os
import sys
from urllib.parse import urlparse
try:
with open(sys.argv[1], encoding="utf-8") as response:
comment = json.load(response)
if not isinstance(comment, dict):
raise ValueError("response is not a comment object")
expected_id = int(os.environ["EXPECTED_COMMENT_ID"])
expected_body = os.environ["EXPECTED_COMMENT_BODY"]
expected_repo = os.environ["EXPECTED_REPO"]
expected_pr = os.environ["EXPECTED_PR_NUMBER"]
issue_path = urlparse(comment.get("issue_url", "")).path.rstrip("/")
expected_suffix = f"/repos/{expected_repo}/issues/{expected_pr}"
if comment.get("id") != expected_id:
raise ValueError("comment id mismatch")
if comment.get("body") != expected_body:
raise ValueError("comment body mismatch")
if not issue_path.endswith(expected_suffix):
raise ValueError("repository or PR mismatch")
except (OSError, json.JSONDecodeError, KeyError, TypeError, ValueError) as error:
print(f"Error: Gitea comment persistence verification failed: {error}", file=sys.stderr)
raise SystemExit(1)
PY
echo "Added and verified comment on Gitea PR #$PR_NUMBER (comment ID $comment_id)"
;;
*)
echo "Error: Unknown action: $ACTION"
exit 1
;;
esac
else
echo "Error: Unknown platform"
exit 1
fi