#!/usr/bin/env bash
[[ " domains domains:setup domains:add domains:clear domains:remove help domains:help " == *" $1 "* ]] || exit $DOKKU_NOT_IMPLEMENTED_EXIT
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_AVAILABLE_PATH/domains/functions"
source "$PLUGIN_AVAILABLE_PATH/nginx-vhosts/functions"

case "$1" in
  domains)
    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
    verify_app_name "$2"
    APP="$2"

    dokku domains:setup $APP
    if [[ -f "$DOKKU_ROOT/$APP/VHOST" ]]; then
      dokku_log_info2_quiet "$APP Domain Names"
      get_app_domains "$APP"
    else
      dokku_log_fail "No domain names set for $APP"
    fi
    ;;

  domains:setup)
    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
    verify_app_name "$2"
    APP="$2"; VHOST_PATH="$DOKKU_ROOT/$APP/VHOST"
    RE_IPV4="$(get_ipv4_regex)"; RE_IPV6="$(get_ipv6_regex)"

    if [[ ! -f $VHOST_PATH ]]; then
      if [[ -f "$DOKKU_ROOT/VHOST" ]]; then
        VHOST=$(< "$DOKKU_ROOT/VHOST")
      else
        VHOST=$(< "$DOKKU_ROOT/HOSTNAME")
      fi
      if [[ "$VHOST" =~ $RE_IPV4 ]] || [[ "$VHOST" =~ $RE_IPV6 ]]; then
        dokku_log_info2 "unsupported vhost config found. disabling vhost support"
        disable_app_vhost $APP --no-restart $APP
      else
        if [[ -f "$DOKKU_ROOT/VHOST" ]]; then
          dokku_log_info1 "Creating new $VHOST_PATH..."
          SUBDOMAIN=${APP/%\.${VHOST}/}
          hostname=$(: | plugn trigger nginx-hostname $APP $SUBDOMAIN $VHOST)
          if [[ ! -n $hostname ]]; then
            if [[ "$APP" == *.* ]] && [[ "$SUBDOMAIN" == "$APP" ]]; then
              hostname="${APP/\//-}"
            else
              hostname="${APP/\//-}.$VHOST"
            fi
          fi

          echo "$hostname" > $VHOST_PATH
        fi
      fi
    fi
    ;;

  domains:add)
    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
    verify_app_name "$2"
    APP="$2"

    if [[ -z "${*:3}" ]]; then
      echo "Usage: dokku $1 $APP DOMAIN [DOMAIN ...]"
      echo "Must specify DOMAIN."
      exit 1
    fi

    if [[ $(egrep ^"$3"$ "$DOKKU_ROOT/$APP/VHOST" > /dev/null 2>&1; echo $?) -eq 0 ]]; then
      echo "$3 is already defined for $APP"
      exit 1
    fi

    shift 2
    dokku domains:setup $APP
    for DOMAIN in "$@"; do
      echo "$DOMAIN" >> "$DOKKU_ROOT/$APP/VHOST"
    done
    # we need to restart the app to make sure we're binding to the appropriate network interface
    nginx_build_config $APP
    plugn trigger post-domains-update $APP
    for DOMAIN in "$@"; do
      dokku_log_info1 "Added $DOMAIN to $APP"
    done

    ;;

  domains:clear)
    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
    verify_app_name "$2"
    APP="$2"

    rm -f "$DOKKU_ROOT/$APP/VHOST"
    dokku domains:setup $APP
    plugn trigger post-domains-update $APP
    dokku_log_info1 "Cleared domains in $APP"

    ;;

  domains:remove)
    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
    verify_app_name "$2"
    APP="$2"

    if [[ -z "${*:3}" ]]; then
      echo "Usage: dokku $1 $APP DOMAIN [DOMAIN ...]"
      echo "Must specify DOMAIN."
      exit 1
    fi

    shift 2
    dokku domains:setup $APP
    for DOMAIN in "$@"; do
      sed -i "/^$DOMAIN$/d" "$DOKKU_ROOT/$APP/VHOST"
    done
    plugn trigger post-domains-update $APP
    for DOMAIN in "$@"; do
      dokku_log_info1 "Removed $DOMAIN from $APP"
    done

    ;;

  help | domains:help)
    cat<<EOF
    domains <app>, List custom domains for app
    domains:add <app> DOMAIN, Add a custom domain to app
    domains:clear <app>, Clear all custom domains for app
    domains:remove <app> DOMAIN, Remove a custom domain from app
EOF
    ;;

  *)
    exit $DOKKU_NOT_IMPLEMENTED_EXIT
    ;;

esac