#!/usr/bin/env bash
# Point d'entree pour le provisioning NETbian

export PROJECT_DIR="$(cd "$(dirname "$0")" && pwd)"
export ROLE_DIR="$PROJECT_DIR/roles"
export PROFILE_DIR="$PROJECT_DIR/profiles"

source "$PROJECT_DIR/lib.sh"
enable_strict_mode

PROG="$(basename "$0")"
usage() {
	local exit_code="${1:-1}"
	cat <<EOM >&2
Usage: $PROG [options]
Options:
  -p, --profile <server|desktop|devel|cli>   Profile to install (required)
  -l, --lang <code>                          Language code if translations are needed (e.g. fr, es, de)
      --config <path>                        Config file path (default: /etc/netbian.conf)
      --list-profiles                        List available profiles and exit
      --list-roles                           List available roles and exit
  -h, --help                                 Show this help
EOM
	exit "$exit_code"
}

PROFILE_OVERRIDE="${NETBIAN_PROFILE:-}"
LANG_OVERRIDE="${NETBIAN_LANG:-}"
CONFIG_FILE="${NETBIAN_CONFIG_FILE:-/etc/netbian.conf}"
ARGS_PROVIDED=false
LIST_PROFILES=false
LIST_ROLES=false

if [[ $# -gt 0 ]]; then
	ARGS_PROVIDED=true
	while [[ $# -gt 0 ]]; do
		case "$1" in
		-p | --profile)
			shift
			[[ $# -gt 0 && -n "${1:-}" ]] || {
				err "Option --profile requires a value."
				usage
			}
			PROFILE_OVERRIDE="$1"
			shift
			;;
		-l | --lang)
			shift
			[[ $# -gt 0 && -n "${1:-}" ]] || {
				err "Option --lang requires a value."
				usage
			}
			LANG_OVERRIDE="$1"
			shift
			;;
		--config)
			shift
			[[ $# -gt 0 && -n "${1:-}" ]] || {
				err "Option --config requires a path."
				usage
			}
			CONFIG_FILE="$1"
			shift
			;;
		--list-profiles)
			LIST_PROFILES=true
			shift
			;;
		--list-roles)
			LIST_ROLES=true
			shift
			;;
		-h | --help)
			usage 0
			;;
		-*)
			err "Unknown option: $1"
			usage
			;;
		*)
			err "Positional arguments are not supported."
			usage
			;;
		esac
	done
fi

if $LIST_PROFILES; then
	list_available_profiles | sort
	exit 0
fi

if $LIST_ROLES; then
	list_available_roles | sort
	exit 0
fi

[[ "$(id -u)" -eq 0 ]] || fatal "Please run this script as root."
require_debian_version "13"
if exists_cmd curl; then
	curl -fsSI --connect-timeout 10 https://deb.debian.org/ >/dev/null || fatal "Network unavailable (HTTP test failed with curl)."
elif exists_cmd wget; then
	wget -q --timeout=10 --spider https://deb.debian.org/ >/dev/null 2>&1 || fatal "Network unavailable (HTTP test failed with wget)."
else
	fatal "curl or wget is required for the network availability check."
fi

cat <<'EOM'
     _   _ _____ _____ _     _
    | \ | | ____|_   _| |__ (_) __ _ _ __
    |  \| |  _|   | | | '_ \| |/ _` | '_ \
    | |\  | |___  | | | |_) | | (_| | | | |
    |_| \_|_____| |_| |_.__/|_|\__,_|_| |_|

EOM

declare -A CFG
CONFIG_EXISTED=false
if [[ -f "$CONFIG_FILE" ]]; then
	CONFIG_EXISTED=true
	validate_config_file "$CONFIG_FILE"
	source "$CONFIG_FILE"
	[[ -n "${profile:-}" ]] && CFG[profile]="$profile"
	[[ -n "${lang:-}" ]] && CFG[lang]="$lang"
fi

if [[ -n "$PROFILE_OVERRIDE" ]]; then
	PROFILE_OVERRIDE="$(tr '[:upper:]' '[:lower:]' <<<"$PROFILE_OVERRIDE")"
	case "$PROFILE_OVERRIDE" in
	server | desktop | devel | cli) CFG[profile]="$PROFILE_OVERRIDE" ;;
	*)
		err "Invalid profile"
		usage
		;;
	esac
fi
if [[ -n "$LANG_OVERRIDE" ]]; then
	CFG[lang]="$(tr '[:upper:]' '[:lower:]' <<<"$LANG_OVERRIDE" | tr '_' '-')"
fi

[[ -n "${CFG[profile]:-}" ]] || {
	err "Profile not provided. Use --profile or NETBIAN_PROFILE."
	usage
}

TMP_IN="$(mktemp --tmpdir netbian.conf.in.XXXXXX)" || TMP_IN="/tmp/netbian.conf.in.$$"
TMP_OUT="$(mktemp --tmpdir netbian.conf.out.XXXXXX)" || TMP_OUT="/tmp/netbian.conf.out.$$"
trap 'rm -f "$TMP_IN" "$TMP_OUT"' EXIT

if [[ -f "$CONFIG_FILE" ]]; then
	grep -v -E '^(profile|lang)=' "$CONFIG_FILE" >"$TMP_IN" || true
else
	: >"$TMP_IN"
fi

{
	cat "$TMP_IN"
	printf 'profile=%s\n' "${CFG[profile]}"
	[[ -n "${CFG[lang]:-}" ]] && printf 'lang=%s\n' "${CFG[lang]}"
} >"$TMP_OUT"

if write_if_changed "$TMP_OUT" "$CONFIG_FILE"; then
	echo "Configuration written to $CONFIG_FILE:"
	grep -E '^(profile|lang)=' "$CONFIG_FILE" || true
elif $CONFIG_EXISTED; then
	if $ARGS_PROVIDED; then
		echo "No changes; configuration remains in $CONFIG_FILE:"
	else
		echo "Configuration read from $CONFIG_FILE:"
	fi
	grep -E '^(profile|lang)=' "$CONFIG_FILE" || true
else
	echo "No configuration file present and no changes were made."
fi

export CONFIG_FILE
exec "$PROJECT_DIR/roles.sh"