#!/usr/bin/env bash
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x
source "$(dirname "$(dirname "${BASH_SOURCE[0]}")")/functions"

cmd-google-auth-allow() {
  declare desc="allow a domain or address to sign in"
  local cmd="google-auth:allow"
  [[ "$1" == "$cmd" ]] && shift 1

  if [[ $# -eq 0 ]]; then
    dokku_log_info2 "google-auth allow list"
    local listed found=false
    while IFS= read -r listed; do
      [[ -z "$listed" ]] && continue
      dokku_log_verbose "$listed (domain)"
      found=true
    done < <(fn-ga-global-get-list allowed-domains)
    while IFS= read -r listed; do
      [[ -z "$listed" ]] && continue
      dokku_log_verbose "$listed"
      found=true
    done < <(fn-ga-global-get-list allowed-emails)
    [[ "$found" == "false" ]] && dokku_log_verbose "(empty — nobody can sign in)"
    return 0
  fi

  local entry
  for entry in "$@"; do
    fn-ga-validate-list-entry "$entry" ||
      dokku_log_fail "invalid entry '$entry' — use a domain (signal.org) or a full address (guest@partner.com), with no spaces or commas"
    entry="${entry,,}"
    if [[ "$(fn-ga-allow-entry-kind "$entry")" == "domain" ]]; then
      entry="${entry#@}"
      [[ "$entry" == *.* ]] || dokku_log_fail "'$entry' does not look like a domain"
      fn-ga-global-list-add allowed-domains "$entry"
      dokku_log_info1 "allowed domain: $entry (any verified account at $entry)"
    else
      fn-ga-global-list-add allowed-emails "$entry"
      dokku_log_info1 "allowed: $entry"
      if fn-ga-global-list-contains denied-emails "$entry"; then
        dokku_log_warn "$entry is on the deny list, which wins — run: dokku google-auth:undeny $entry"
      fi
    fi
  done

  fn-ga-reload-service-config
}

cmd-google-auth-allow "$@"