#!/usr/bin/env bash
set -euo pipefail
script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "${script_dir}/lib-compose-project.sh"

compose_file="docker-compose.devprod.yml"
env_file=".env.devprod"

usage() {
  cat <<'USAGE'
Usage: ./scripts/clear-nextcloud-appdata-assets.sh [options]

Options:
  --compose-file <path>  Compose file to use (default: docker-compose.devprod.yml)
  --env-file <path>      Env file to use (default: .env.devprod)
  -h, --help             Show this help
USAGE
}

while [[ $# -gt 0 ]]; do
  case "$1" in
    --compose-file)
      compose_file="$2"
      shift 2
      ;;
    --env-file)
      env_file="$2"
      shift 2
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "Unknown option: $1"
      usage
      exit 1
      ;;
  esac
done

if [[ -f "${env_file}" ]]; then
  export_compose_project_name_from_env "${env_file}" || true
fi

ensure_docker_access() {
  local docker_path=""
  docker_path="$(type -P docker || true)"
  if [[ -z "${docker_path}" ]]; then
    echo "docker is required"
    exit 1
  fi

  if "${docker_path}" info >/dev/null 2>&1; then
    DOCKER_CMD=("${docker_path}")
    return 0
  fi

  if ! command -v sudo >/dev/null 2>&1; then
    echo "docker is installed but this user cannot access it, and sudo is unavailable."
    exit 1
  fi

  if sudo -n "${docker_path}" info >/dev/null 2>&1; then
    DOCKER_CMD=(sudo "${docker_path}")
    echo "Using sudo for docker commands."
    return 0
  fi

  echo "docker requires elevated privileges on this machine."
  echo "You may be prompted for your sudo password."
  if sudo "${docker_path}" info >/dev/null 2>&1; then
    DOCKER_CMD=(sudo "${docker_path}")
    echo "Using sudo for docker commands."
    return 0
  fi

  echo "Unable to access docker, even with sudo."
  exit 1
}

docker() {
  "${DOCKER_CMD[@]}" "$@"
}

ensure_docker_access

docker compose -f "${compose_file}" --env-file "${env_file}" exec -T -u root app sh -lc '
set -eu
for base in /var/www/html/data/appdata_*; do
  [ -d "${base}" ] || continue
  for asset in js css; do
    dir="${base}/${asset}"
    if [ -d "${dir}" ]; then
      find "${dir}" -mindepth 1 -type f -delete
      find "${dir}" -mindepth 1 -type l -delete
    else
      mkdir -p "${dir}"
    fi
    mkdir -p "${dir}/core"
  done
done
'

echo "Cleared Nextcloud appdata JS/CSS assets while preserving js/core and css/core."