#!/bin/bash
set -e

WORKSPACE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$WORKSPACE_DIR"

# Load config
source ./.vala_skillhub_config

HASH_FILE=./.vala_skill_hashes
touch "${HASH_FILE}"

compute_skill_hash() {
  local skill_dir="$1"
  (cd "${skill_dir}" && find . -type f -not -path '*/\\.*' | LC_ALL=C sort | while read f; do echo "FILE:$f"; cat "$f"; done | sha256sum | awk '{print $1}')
}

pushed=0
skipped=0
pushed_names=""

for skill_dir in ./skills/*/; do
  skill_name=$(basename "${skill_dir}")

  # Skip use_vala_skillhub itself
  if [ "${skill_name}" = "use_vala_skillhub" ]; then
    continue
  fi

  current_hash=$(compute_skill_hash "${skill_dir}")
  stored_hash=$(grep "^${skill_name} " "${HASH_FILE}" 2>/dev/null | awk '{print $2}')

  if [ "${current_hash}" = "${stored_hash}" ] && [ -n "${stored_hash}" ]; then
    echo "[skip] ${skill_name} — 无变更"
    skipped=$((skipped + 1))
    continue
  fi

  echo "[sync] ${skill_name} — 检测到变更，开始推送..."

  repo_name="${skill_name}.${SOURCE_NAME}"

  # Check if remote repo exists
  http_code=$(curl -s -o /dev/null -w "%{http_code}" \
    "${GITEA_URL}/api/v1/repos/${GITEA_OWNER}/${repo_name}" \
    -H "Authorization: token ${GITEA_TOKEN}")

  # Create repo if not exists
  if [ "${http_code}" = "404" ]; then
    desc=""
    if [ -f "${skill_dir}/skill.json" ]; then
      desc=$(python3 -c "import json; print(json.load(open('${skill_dir}/skill.json')).get('description',''))" 2>/dev/null || echo "")
    fi
    echo "  → 仓库不存在，创建中..."
    curl -s -X POST "${GITEA_URL}/api/v1/orgs/${GITEA_OWNER}/repos" \
      -H "Authorization: token ${GITEA_TOKEN}" \
      -H "Content-Type: application/json" \
      -d "{\"name\": \"${repo_name}\", \"private\": false, \"description\": \"${desc}\", \"auto_init\": false}" > /dev/null
    echo "  → 仓库已创建"
  fi

  # Copy to temp dir and push
  rm -rf ./tmp/skill_push/${repo_name}
  mkdir -p ./tmp/skill_push/${repo_name}
  cp -r ${skill_dir}* ./tmp/skill_push/${repo_name}/ 2>/dev/null || true
  cp -r ${skill_dir}.[!.]* ./tmp/skill_push/${repo_name}/ 2>/dev/null || true

  pushd ./tmp/skill_push/${repo_name} > /dev/null
  git init -q
  git checkout -B main -q
  git add -A
  git commit -m "auto-sync: ${skill_name} $(date +%Y-%m-%d_%H:%M)" -q || true
  git remote add origin "https://oauth2:${GITEA_TOKEN}@${GITEA_URL#https://}/${GITEA_OWNER}/${repo_name}.git" 2>/dev/null || true
  git push -u origin main --force -q 2>&1 | tail -1
  popd > /dev/null

  # Cleanup temp
  rm -rf ./tmp/skill_push/${repo_name}

  # Update hash
  grep -v "^${skill_name} " "${HASH_FILE}" > "${HASH_FILE}.tmp" 2>/dev/null || true
  echo "${skill_name} ${current_hash}" >> "${HASH_FILE}.tmp"
  mv "${HASH_FILE}.tmp" "${HASH_FILE}"

  echo "[done] ${skill_name} — 推送完成"
  pushed=$((pushed + 1))
  pushed_names="${pushed_names} ${skill_name}"
done

# Summary
summary="[auto-sync] $(date +%Y-%m-%d_%H:%M) — 推送 ${pushed} 个 skill:${pushed_names} | 跳过 ${skipped} 个（无变更）"
echo "${summary}"

# Output result code for heartbeat: 0=nothing pushed, 1=something pushed
if [ "${pushed}" -gt 0 ]; then
  echo "RESULT:pushed=${pushed}"
  exit 0
else
  echo "RESULT:no_changes"
  exit 0
fi