#!/bin/bash
# sync.sh — Pull VoltAgent/awesome-codex-subagents and convert to Claude Code plugin marketplace
# Usage: ./sync.sh [--dry-run] [--force] [--verbose]
set -euo pipefail

SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
UPSTREAM_DIR="${SCRIPT_DIR}/upstream"
UPSTREAM_REPO="https://github.com/VoltAgent/awesome-codex-subagents"
OUTPUT_DIR="${SCRIPT_DIR}/plugins"
MANIFEST="${SCRIPT_DIR}/codex-manifest.json"

DRY_RUN=""
FORCE=false
VERBOSE=""

usage() {
  echo "Usage: $(basename "$0") [--dry-run] [--force] [--verbose]"
  echo ""
  echo "Pull upstream Codex agent definitions and convert to Claude Code plugins."
  echo ""
  echo "Options:"
  echo "  --dry-run   Print what would happen without writing files"
  echo "  --force     Re-run converter even if upstream hasn't changed"
  echo "  --verbose   Print per-file conversion status"
  echo "  --help      Show this help message"
}

log() {
  echo "[$(date '+%H:%M:%S')] $*" >&2
}

while [[ $# -gt 0 ]]; do
  case "$1" in
    --dry-run)
      DRY_RUN="--dry-run"
      shift
      ;;
    --force)
      FORCE=true
      shift
      ;;
    --verbose)
      VERBOSE="--verbose"
      shift
      ;;
    --help)
      usage
      exit 0
      ;;
    *)
      echo "Unknown option: $1" >&2
      usage
      exit 1
      ;;
  esac
done

# Clone or pull upstream
if [[ -d "${UPSTREAM_DIR}/.git" ]]; then
  log "Pulling upstream updates..."
  git -C "$UPSTREAM_DIR" pull --ff-only
else
  log "Cloning upstream repo..."
  git clone "$UPSTREAM_REPO" "$UPSTREAM_DIR"
fi

CURRENT_COMMIT=$(git -C "$UPSTREAM_DIR" rev-parse --short HEAD)
log "Upstream at commit ${CURRENT_COMMIT}"

# Check manifest for skip
if [[ "$FORCE" == false && -f "$MANIFEST" ]]; then
  LAST_COMMIT=$(python3 -c "import json; m=json.load(open('${MANIFEST}')); print(m.get('upstream_commit',''))" 2>/dev/null || echo "")
  if [[ "$LAST_COMMIT" == "$CURRENT_COMMIT" ]]; then
    log "Already up to date (commit ${CURRENT_COMMIT}). Use --force to re-run."
    exit 0
  fi
fi

# Run converter
log "Converting agents..."
python3 "${SCRIPT_DIR}/convert.py" \
  "${UPSTREAM_DIR}/categories" \
  "${OUTPUT_DIR}" \
  --manifest "${MANIFEST}" \
  ${DRY_RUN} \
  ${VERBOSE}

# Update manifest with commit hash (converter writes the rest)
if [[ -z "$DRY_RUN" && -f "$MANIFEST" ]]; then
  python3 -c "
import json
from pathlib import Path
p = Path('${MANIFEST}')
m = json.loads(p.read_text())
m['upstream_commit'] = '${CURRENT_COMMIT}'
p.write_text(json.dumps(m, indent=2) + '\n')
"
  log "Manifest updated with commit ${CURRENT_COMMIT}"
fi

log "Done."