#!/usr/bin/env bash
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_CORE_AVAILABLE_PATH/common/property-functions"
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x

cmd-traefik-set() {
  declare desc="set or clear an traefik property for an app"
  declare cmd="traefik:set"
  [[ "$1" == "$cmd" ]] && shift 1
  declare APP="$1" KEY="$2" VALUE="$3"
  local VALID_KEYS=("api-enabled" "api-entry-point" "api-entry-point-address" "api-vhost" "challenge-mode" "dashboard-enabled" "basic-auth-username" "basic-auth-password" "dns-provider" "image" "letsencrypt-email" "letsencrypt-server" "log-level" "http-entry-point" "https-entry-point")
  local GLOBAL_KEYS=("api-enabled" "api-entry-point" "api-entry-point-address" "api-vhost" "challenge-mode" "dashboard-enabled" "basic-auth-username" "basic-auth-password" "dns-provider" "image" "letsencrypt-email" "letsencrypt-server" "log-level" "http-entry-point" "https-entry-point")
  local GLOBAL_ONLY_KEYS=("api-enabled" "api-entry-point" "api-entry-point-address" "api-vhost" "basic-auth-username" "basic-auth-password" "challenge-mode" "dashboard-enabled" "dns-provider" "image" "letsencrypt-email" "letsencrypt-server" "log-level" "http-entry-point" "https-entry-point")

  [[ -z "$KEY" ]] && dokku_log_fail "No key specified"

  # Allow dns-provider-* keys for setting DNS provider environment variables
  local is_dns_provider_env_var=false
  if [[ "$KEY" == dns-provider-* ]]; then
    is_dns_provider_env_var=true
  fi

  if ! fn-in-array "$KEY" "${VALID_KEYS[@]}" && [[ "$is_dns_provider_env_var" != "true" ]]; then
    dokku_log_fail "Invalid key specified, valid keys include: api-enabled api-entry-point api-entry-point-address api-vhost challenge-mode dashboard-enabled basic-auth-username basic-auth-password dns-provider dns-provider-<ENV_VAR> image letsencrypt-email letsencrypt-server log-level http-entry-point https-entry-point"
  fi

  if ! fn-in-array "$KEY" "${GLOBAL_KEYS[@]}" && [[ "$is_dns_provider_env_var" != "true" ]]; then
    if [[ "$APP" == "--global" ]]; then
      dokku_log_fail "The key '$KEY' cannot be set globally"
    fi
    verify_app_name "$APP"
  fi

  # dns-provider-* keys and GLOBAL_ONLY_KEYS can only be set globally
  if [[ "$is_dns_provider_env_var" == "true" ]] && [[ "$APP" != "--global" ]]; then
    dokku_log_fail "The key '$KEY' can only be set globally"
  fi

  if fn-in-array "$KEY" "${GLOBAL_ONLY_KEYS[@]}" && [[ "$APP" != "--global" ]]; then
    dokku_log_fail "The key '$KEY' can only be set globally"
  fi

  if [[ -n "$VALUE" ]]; then
    dokku_log_info2_quiet "Setting ${KEY} to ${VALUE}"
    fn-plugin-property-write "traefik" "$APP" "$KEY" "$VALUE"
  else
    dokku_log_info2_quiet "Unsetting ${KEY}"
    fn-plugin-property-delete "traefik" "$APP" "$KEY"
  fi
}

cmd-traefik-set "$@"