#!/usr/bin/env bash
# Shared helpers for common core init scripts (ArgoCD, OpenBao, OpenTofu, Garage).
# Responsibilities:
# - handle [-c|--config] early so prole_cfg.sh loads the right prole.cfg
# - parse standard actions/options
# - resolve and apply namespaces consistently

# Actions supported by all common core scripts
COMMON_CORE_ACTIONS="start|stop|status|restart|initialize|update|reload"

# Parse -c/--config before loading prole_cfg.sh so PROLE_CONF is set in time.
# Sets:
#   COMMON_CORE_CONFIG_PATH - path to prole.cfg (if provided)
#   COMMON_CORE_ARGS        - original arguments minus -c/--config
common_core_preparse_config() {
  COMMON_CORE_CONFIG_PATH=""
  COMMON_CORE_ARGS=()
  while [[ $# -gt 0 ]]; do
    case "$1" in
      -c|--config)
        shift
        if [[ -z "${1:-}" ]]; then
          echo "ERROR: -c/--config requires a file path" >&2
          exit 2
        fi
        COMMON_CORE_CONFIG_PATH="$1"
        ;;
      -c=*|--config=*)
        COMMON_CORE_CONFIG_PATH="${1#*=}"
        ;;
      *)
        COMMON_CORE_ARGS+=("$1")
        ;;
    esac
    shift
  done

  if [[ -n "$COMMON_CORE_CONFIG_PATH" ]]; then
    if [[ ! -f "$COMMON_CORE_CONFIG_PATH" ]]; then
      echo "ERROR: config file not found: $COMMON_CORE_CONFIG_PATH" >&2
      exit 2
    fi
    local cfg_dir
    cfg_dir=$(cd "$(dirname "$COMMON_CORE_CONFIG_PATH")" && pwd)
    PROLE_CONF="$cfg_dir"
    export PROLE_CONF
  fi
}

# Parse standard options and action.
# Sets (always):
#   COMMON_CORE_ACTION
#   COMMON_CORE_NAMESPACE
#   COMMON_CORE_HELP (0/1)
#   COMMON_CORE_PARSE_ERROR (empty or message)
common_core_parse_args() {
  COMMON_CORE_ACTION=""
  COMMON_CORE_NAMESPACE=""
  COMMON_CORE_HELP=0
  COMMON_CORE_PARSE_ERROR=""

  while [[ $# -gt 0 ]]; do
    case "$1" in
      -m|--mode)
        shift
        prole_set_mode "${1:-}"
        ;;
      -m=*|--mode=*)
        prole_set_mode "${1#*=}"
        ;;
      -n|--namespace)
        shift
        if [[ -z "${1:-}" ]]; then
          COMMON_CORE_PARSE_ERROR="--namespace requires a value"
          break
        fi
        COMMON_CORE_NAMESPACE="$1"
        ;;
      -n=*|--namespace=*)
        COMMON_CORE_NAMESPACE="${1#*=}"
        ;;
      start|stop|status|restart|initialize|update|reload)
        COMMON_CORE_ACTION="$1"
        ;;
      -h|--help)
        COMMON_CORE_HELP=1
        ;;
      --)
        shift
        break
        ;;
      *)
        if [[ -z "$COMMON_CORE_ACTION" && "$1" != -* ]]; then
          COMMON_CORE_ACTION="$1"
        else
          COMMON_CORE_PARSE_ERROR="Unknown argument: $1"
          break
        fi
        ;;
    esac
    shift
  done

  if [[ -z "$COMMON_CORE_ACTION" && "$COMMON_CORE_HELP" -eq 0 && -z "$COMMON_CORE_PARSE_ERROR" ]]; then
    COMMON_CORE_PARSE_ERROR="Action is required (${COMMON_CORE_ACTIONS//|/, })"
  fi
}

common_core_usage() {
  local prog="${1:-$0}"
  echo "Usage: ${prog##*/} [${COMMON_CORE_ACTIONS//|/|}] [-n namespace] [--mode k3d|k3s|k8s] [-c conf/prole.cfg]" >&2
}

# Resolve namespace with precedence: CLI override -> SERVICE_NAMESPACE -> NAMESPACE -> provided default
common_core_resolve_namespace() {
  local default_ns="${1:-default}"
  local ns="${COMMON_CORE_NAMESPACE:-}"
  [[ -z "$ns" && -n "${SERVICE_NAMESPACE:-}" ]] && ns="$SERVICE_NAMESPACE"
  [[ -z "$ns" && -n "${NAMESPACE:-}" ]] && ns="$NAMESPACE"
  [[ -z "$ns" ]] && ns="$default_ns"
  echo "$ns"
}

# Apply a resolved namespace to both NAMESPACE and SERVICE_NAMESPACE for consistency
common_core_apply_namespace() {
  local ns="$1"
  if [[ -n "$ns" ]]; then
    NAMESPACE="$ns"
    SERVICE_NAMESPACE="$ns"
    export NAMESPACE SERVICE_NAMESPACE
  fi
}