#!/usr/bin/env bash
# pre-pr-gate.sh — PreToolUse hook for Bash commands.
# Reads tool input from stdin, checks if command contains `gh pr create`.
# If so, runs complexity checks and blocks on violations.
# All other commands pass through unchanged.
set -euo pipefail
# Read the tool input from stdin
input=$(cat)
# Extract the command from the JSON input
command=$(echo "$input" | grep -o '"command"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*: *"//;s/"$//' || true)
# Only gate on gh pr create
if ! echo "$command" | grep -q 'gh pr create'; then
exit 0
fi
# Check for in-progress beads issues (blocking, with trivial/ escape hatch)
if command -v bd &>/dev/null; then
current_branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || true)
if [[ "$current_branch" == trivial/* ]]; then
echo "Skipping beads check for trivial/ branch."
echo ""
else
beads_output=$(bd list --status=in_progress 2>/dev/null | head -1)
if [ -z "$beads_output" ]; then
echo "BLOCKED: No in-progress beads issues. Run \`bd create\` and \`bd update <id> --status=in_progress\` first."
echo "Tip: Use a \`trivial/\` branch prefix to skip this check for minor fixes."
exit 2
fi
fi
fi
# Run complexity check
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
output=$("$SCRIPT_DIR/check-complexity.sh" 2>&1) && exit 0
# Violations found — block PR creation
echo "BLOCKED: Code complexity violations detected. Fix before creating PR."
echo ""
echo "$output"
echo ""
echo "Run /create-pr which fixes violations automatically, or fix manually."
exit 2
