#!/usr/bin/env bash
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x

nginx_vhosts_validate_single_func() {
  declare APP="$1" FLAG="$2"
  local NGINX_CONF="$DOKKU_ROOT/$APP/nginx.conf"

  if [[ ! -f "$NGINX_CONF" ]]; then
    dokku_log_warn_quiet "No nginx config found for ${APP}"
    return
  fi

  if nginx_vhosts_is_valid_nginx_config_func "$APP"; then
    return
  fi

  dokku_log_warn "Failed to validate nginx config for ${APP}. Contents below..."
  cat "$NGINX_CONF"

  if [[ "$FLAG" == "--clean" ]]; then
    nginx_vhosts_conf_clean_func "$APP"
  fi
}

nginx_vhosts_is_valid_nginx_config_func() {
  declare desc="checks if an app has a valid nginx config"
  declare APP="$1"
  local VALIDATE_TEMPLATE="$PLUGIN_AVAILABLE_PATH/nginx-vhosts/templates/validate.conf.sigil"
  local TMP_OUTPUT=$(mktemp "/tmp/${FUNCNAME[0]}.XXXX")
  trap 'rm -rf "$TMP_OUTPUT" >/dev/null' RETURN INT TERM EXIT

  sigil -f "$VALIDATE_TEMPLATE" NGINX_CONF="$DOKKU_ROOT/$APP/nginx.conf" | cat -s >"$TMP_OUTPUT"
  sudo "$NGINX_LOCATION" -t -c "$TMP_OUTPUT" 2>/dev/null
}

nginx_vhosts_conf_clean_func() {
  declare APP="$1"
  local NGINX_CONF="$DOKKU_ROOT/$APP/nginx.conf"
  dokku_log_warn "Removing invalid nginx file"
  rm -f "$NGINX_CONF"
}

nginx_vhosts_help_content_func() {
  declare desc="return nginx plugin help content"
  cat <<help_content
    nginx:build-config <app>, (Re)builds nginx config for given app
    nginx:access-logs <app> [-t], Show the nginx access logs for an application (-t follows)
    nginx:error-logs <app> [-t], Show the nginx error logs for an application (-t follows)
    nginx:validate [<app>] [--clean], Validates and optionally cleans up invalid nginx configurations
help_content
}

nginx_vhosts_help_cmd() {
  if [[ $1 == "nginx:help" ]]; then
    echo -e 'Usage: dokku nginx[:COMMAND]'
    echo ''
    echo 'Interact with Dokku'"'"'s Nginx proxy.'
    echo ''
    echo 'Additional commands:'
    nginx_vhosts_help_content_func | sort | column -c2 -t -s,
  elif [[ $(ps -o command= $PPID) == *"--all"* ]]; then
    nginx_vhosts_help_content_func
  else
    cat <<help_desc
    nginx, Interact with Dokku's Nginx proxy
help_desc
  fi
}

nginx_clear_config() {
  declare desc="Remove the nginx conf file"
  declare APP="$1"
  rm -f "$DOKKU_ROOT/$APP/nginx.conf"
}