#!/usr/bin/env bash
# Commit and optionally push a completed feature using Conventional Commits.
# Usage: ./scripts/commit_feature.sh <feature_id>

set -euo pipefail

FEATURE_ID="${1:-}"
if [ -z "$FEATURE_ID" ]; then
  echo "[FAIL] Usage: $0 <feature_id>" >&2
  exit 1
fi

# Check if git repo
if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  echo "[SKIP] Not a git repository, skipping commit"
  exit 0
fi

feature_meta() {
  python3 - "$FEATURE_ID" <<'PY'
import json
import re
import sys
from pathlib import Path

fid = sys.argv[1]
path = Path('backlog/features.json')
commit_type = 'feat'
title = 'completed feature'

if path.exists():
    data = json.loads(path.read_text(encoding='utf-8'))
    for feature in data.get('features', []):
        if str(feature.get('id')) == fid:
            ftype = str(feature.get('type', 'feature')).lower()
            commit_type = {
                'feature': 'feat',
                'fix': 'fix',
                'bug': 'fix',
                'chore': 'chore',
            }.get(ftype, 'feat')
            title = feature.get('title') or feature.get('description') or title
            break

subject = re.sub(r'\s+', ' ', str(title)).strip()
subject = subject[0].lower() + subject[1:] if subject else 'completed feature'
subject = subject.rstrip('.')
print(commit_type)
print(subject[:120])
PY
}

mapfile -t META < <(feature_meta)
COMMIT_TYPE="${META[0]:-feat}"
COMMIT_SUBJECT="${META[1]:-completed feature}"
SCOPE=$(printf '%s' "$FEATURE_ID" | tr '[:upper:]' '[:lower:]' | tr -c 'a-z0-9._/-' '-')
COMMIT_MSG="$COMMIT_TYPE($SCOPE): $COMMIT_SUBJECT"

# Validate before touching git state.
python3 scripts/validate_conventional_commit.py --message "$COMMIT_MSG"

# Stage all changes (excluding node_modules, dist, .next, etc. via .gitignore)
git add -A

# Check if there are changes to commit
if git diff --cached --quiet; then
  echo "[SKIP] No changes to commit for $FEATURE_ID"
  exit 0
fi

# Commit
git commit -m "$COMMIT_MSG"

echo "[OK] Committed $FEATURE_ID: $COMMIT_MSG"

# Check if remote exists and push
if git remote get-url origin >/dev/null 2>&1; then
  BRANCH=$(git rev-parse --abbrev-ref HEAD)
  echo "[INFO] Pushing to origin/$BRANCH..."
  if git push origin "$BRANCH"; then
    echo "[OK] Pushed to origin/$BRANCH"
  else
    echo "[WARN] Push failed (you can push manually later)"
  fi
else
  echo "[SKIP] No remote 'origin' configured, skipping push"
fi