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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PACKAGE_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
source "$SCRIPT_DIR/lib/common.sh"

PROJECT_ENV=""
APPROVAL_FILE=""
APPLY=0
while [ "$#" -gt 0 ]; do
  case "$1" in
    --project-env) PROJECT_ENV="$2"; shift 2 ;;
    --approval-file) APPROVAL_FILE="$2"; shift 2 ;;
    --apply) APPLY=1; shift ;;
    *) die "unknown argument: $1" ;;
  esac
done

[ -n "$PROJECT_ENV" ] || die "--project-env is required"
load_env_file "$PROJECT_ENV"
assert_no_placeholders "$PROJECT_ENV"
validate_project_root "$STORE_ROOT"

case "$ALIYUN_MQTT_AUTH_MODE:$ALIYUN_MQTT_INSTANCE_GENERATION" in
  device-credential:new|signature:existing-signature-enabled) ;;
  *) die "unsupported MQTT auth/instance combination" ;;
esac

log "PLAN add explicit $ALIYUN_MQTT_AUTH_MODE support to Store MQTT clients"
log "PLAN backup MqttConfig.php and MQTTServer.php, then run PHP syntax checks"

[ "$APPLY" -eq 1 ] || {
  log "SHADOW_ONLY: Store files unchanged"
  exit 0
}

[ -n "$APPROVAL_FILE" ] || die "--approval-file is required with --apply"
require_apply_authorization "configure-mqtt-auth-adapter" "$APPROVAL_FILE" "$TARGET_HOST_REF"
require_cmd python3
PHP_BIN="${PHP73_BIN:-/usr/local/php/bin/php}"
require_file "$PHP_BIN"

BACKUP_DIR="$BACKUP_ROOT/mqtt-auth-adapter-$(date '+%Y%m%dT%H%M%S%z')"
python3 "$PACKAGE_ROOT/tools/configure_mqtt_auth.py" \
  --project-root "$STORE_ROOT" \
  --backup-dir "$BACKUP_DIR"

"$PHP_BIN" -l "$STORE_ROOT/extend/mqtt/MqttConfig.php"
"$PHP_BIN" -l "$STORE_ROOT/extend/mqtt/MQTTServer.php"
log "MQTT_AUTH_ADAPTER_APPLIED backup=$BACKUP_DIR"