#!/bin/bash

set -e

. "${INSTALLER_DIR}/wizard"

supported_distribution() {
	case "$(wiz_fact "osfamily")" in
		"debian")
			case $(wiz_fact "osversion") in
				"20.04")
					return 0
					;;
				"18.04")
					return 0
					;;
				"10")
					return 0
					;;
			esac
			;;
		"redhat")
			case "$(wiz_fact "osversion")" in
				8*)
					return 0
					;;
			esac
			;;
	esac
	return 1
}

existing_installation() {
	[ "$(wiz_get "server/autoinstall")" != "" ];
}

never_answered_before() {
	[ "$(wiz_get "openproject/edition")" == "" ];
}

input_start() {
	# on first run of the wizard, set default edition if existing OpenProject installation
	if never_answered_before && existing_installation ; then
		wiz_set "openproject/edition" "default"
		STATE="done"
	elif supported_distribution ; then
		wiz_put "openproject/edition"
		if wiz_ask ; then
			STATE="done"
		else
			STATE="cancel"
		fi
	else
		wiz_set "openproject/edition" "default"
		STATE="done"
	fi
}

state_machine() {
  case "$1" in
    "start")
      input_start
      ;;
    "done")
      echo "DONE"
      exit 0
      ;;
    "cancel")
      echo "CANCEL"
      exit 1
      ;;
    *)
      echo "invalid state ${STATE}"
      exit 1
      ;;
  esac
}

wizard "start"