#!/usr/bin/env bash
set -euo pipefail

if [[ $# -lt 1 ]]; then
  echo "Usage: $0 <path-to-git-repo> [<path-to-smart_ide>]" >&2
  exit 1
fi

REPO=$(cd "$1" && pwd)
SMART_IDE_ROOT=${2:-}
if [[ -z "$SMART_IDE_ROOT" ]]; then
  SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
  SMART_IDE_ROOT=$(cd "$SCRIPT_DIR/.." && pwd)
fi

SYNC_DIR="$SMART_IDE_ROOT/scripts/anythingllm-pull-sync"
HOOK="$REPO/.git/hooks/post-merge"

if [[ ! -d "$REPO/.git" ]]; then
  echo "Not a git repository: $REPO" >&2
  exit 1
fi

if [[ ! -f "$SYNC_DIR/sync.mjs" ]]; then
  echo "Missing $SYNC_DIR/sync.mjs" >&2
  exit 1
fi

mkdir -p "$(dirname "$HOOK")"
cat >"$HOOK" <<EOF
#!/usr/bin/env sh
# Installed by install-anythingllm-post-merge-hook.sh — AnythingLLM upload after pull (post-merge)
REPO_ROOT=\$(git rev-parse --show-toplevel)
if [ -f "\${HOME}/.config/4nk/anythingllm-sync.env" ]; then
  # shellcheck source=/dev/null
  . "\${HOME}/.config/4nk/anythingllm-sync.env"
fi
exec node "$SYNC_DIR/sync.mjs" --repo-root "\$REPO_ROOT"
EOF
chmod +x "$HOOK"
echo "Installed post-merge hook: $HOOK"
echo "Run: (cd $SYNC_DIR && npm install) if node_modules is missing."