#!/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

fn-traefik-logs() {
  declare desc="shows the logs for the traefik container"
  declare TAIL="$1" NUM="$2"
  local dokku_logs_args=("--tail" "$NUM")

  if [[ "$TAIL" == "true" ]]; then
    dokku_logs_args+=("--follow")
  fi

  "$DOCKER_BIN" logs traefik-traefik-1 "${dokku_logs_args[@]}"
}

fn-traefik-logs-usage() {
  declare desc="logs specific usage"
  echo "Usage: dokku traefik:logs"
  echo " display recent traefik log output"
  echo ""
  echo " -n, --num NUM        # the number of lines to display"
  echo " -t, --tail           # continually stream logs"
}

fn-traefik-template-compose-file() {
  declare desc="templates out the compose file"
  declare OUTPUT_PATH="$1"
  local COMPOSE_TEMPLATE="$PLUGIN_AVAILABLE_PATH/traefik-vhosts/templates/compose.yml.sigil"
  local basic_auth basic_auth_password basic_auth_username

  CUSTOM_COMPOSE_TEMPLATE="$(plugn trigger traefik-template-source "$APP")"
  if [[ -n "$CUSTOM_COMPOSE_TEMPLATE" ]]; then
    COMPOSE_TEMPLATE="$CUSTOM_COMPOSE_TEMPLATE"
  fi

  basic_auth_password="$(fn-traefik-computed-basic-auth-password)"
  basic_auth_username="$(fn-traefik-computed-basic-auth-username)"
  if [[ -n "$basic_auth_password" ]] && [[ -n "$basic_auth_username" ]]; then
    basic_auth="$(htpasswd -nb "$basic_auth_username" "$basic_auth_password" | sed -e s/\\$/\\$\\$/g)"
  fi

  local dns_provider_env_vars=""
  local dns_provider
  dns_provider="$(fn-traefik-computed-dns-provider)"
  if [[ -n "$dns_provider" ]]; then
    dns_provider_env_vars="$(fn-traefik-dns-provider-env-vars)"
  fi

  local api_entry_point_address api_entry_point_port=""
  api_entry_point_address="$(fn-traefik-computed-api-entry-point-address)"
  if [[ -n "$api_entry_point_address" ]]; then
    api_entry_point_port="${api_entry_point_address##*:}"
  fi

  local SIGIL_PARAMS=(TRAEFIK_API_ENABLED="$(fn-traefik-computed-api-enabled)"
  TRAEFIK_API_ENTRY_POINT="$(fn-traefik-computed-api-entry-point)"
  TRAEFIK_API_ENTRY_POINT_ADDRESS="$api_entry_point_address"
  TRAEFIK_API_ENTRY_POINT_PORT="$api_entry_point_port"
  TRAEFIK_API_VHOST="$(fn-traefik-computed-api-vhost)"
  TRAEFIK_BASIC_AUTH="$basic_auth"
  TRAEFIK_CHALLENGE_MODE="$(fn-traefik-computed-challenge-mode)"
  TRAEFIK_DASHBOARD_ENABLED="$(fn-traefik-computed-dashboard-enabled)"
  TRAEFIK_DATA_DIR="${DOKKU_LIB_ROOT}/data/traefik"
  TRAEFIK_DNS_PROVIDER="$dns_provider"
  TRAEFIK_DNS_PROVIDER_ENV_VARS="$dns_provider_env_vars"
  TRAEFIK_IMAGE="$(fn-traefik-computed-image)"
  TRAEFIK_LETSENCRYPT_EMAIL="$(fn-traefik-computed-letsencrypt-email)"
  TRAEFIK_LETSENCRYPT_SERVER="$(fn-traefik-computed-letsencrypt-server)"
  TRAEFIK_LOG_LEVEL="$(fn-traefik-computed-log-level)")

  sigil -f "$COMPOSE_TEMPLATE" "${SIGIL_PARAMS[@]}" | cat -s >"$OUTPUT_PATH"
}

fn-traefik-global-api-enabled() {
  fn-plugin-property-get-default "traefik" "--global" "api-enabled" ""
}

fn-traefik-computed-api-enabled() {
  local value
  value="$(fn-traefik-global-api-enabled)"
  if [[ -z "$value" ]]; then
    value="false"
  fi
  echo "$value"
}

fn-traefik-global-api-vhost() {
  fn-plugin-property-get-default "traefik" "--global" "api-vhost" ""
}

fn-traefik-computed-api-vhost() {
  local value
  value="$(fn-traefik-global-api-vhost)"
  if [[ -z "$value" ]]; then
    value="traefik.dokku.me"
  fi
  echo "$value"
}

fn-traefik-global-basic-auth-password() {
  fn-plugin-property-get-default "traefik" "--global" "basic-auth-password" ""
}

fn-traefik-computed-basic-auth-password() {
  fn-traefik-global-basic-auth-password
}

fn-traefik-global-basic-auth-username() {
  fn-plugin-property-get-default "traefik" "--global" "basic-auth-username" ""
}

fn-traefik-computed-basic-auth-username() {
  fn-traefik-global-basic-auth-username
}

fn-traefik-global-dashboard-enabled() {
  fn-plugin-property-get-default "traefik" "--global" "dashboard-enabled" ""
}

fn-traefik-computed-dashboard-enabled() {
  local value
  value="$(fn-traefik-global-dashboard-enabled)"
  if [[ -z "$value" ]]; then
    value="false"
  fi
  echo "$value"
}

fn-traefik-global-image() {
  fn-plugin-property-get-default "traefik" "--global" "image" ""
}

fn-traefik-computed-image() {
  local value
  value="$(fn-traefik-global-image)"
  if [[ -z "$value" ]]; then
    value="$(grep "FROM" "$PLUGIN_AVAILABLE_PATH/traefik-vhosts/Dockerfile" | awk '{print $2}')"
  fi
  echo "$value"
}

fn-traefik-global-letsencrypt-email() {
  fn-plugin-property-get-default "traefik" "--global" "letsencrypt-email" ""
}

fn-traefik-computed-letsencrypt-email() {
  fn-traefik-global-letsencrypt-email
}

fn-traefik-global-letsencrypt-server() {
  fn-plugin-property-get-default "traefik" "--global" "letsencrypt-server" ""
}

fn-traefik-computed-letsencrypt-server() {
  local value
  value="$(fn-traefik-global-letsencrypt-server)"
  if [[ -z "$value" ]]; then
    value="https://acme-v02.api.letsencrypt.org/directory"
  fi
  echo "$value"
}

fn-traefik-global-log-level() {
  fn-plugin-property-get-default "traefik" "--global" "log-level" ""
}

fn-traefik-computed-log-level() {
  local value
  value="$(fn-traefik-global-log-level)"
  if [[ -z "$value" ]]; then
    value="ERROR"
  fi
  echo "${value^^}"
}

fn-traefik-global-http-entry-point() {
  fn-plugin-property-get-default "traefik" "--global" "http-entry-point" ""
}

fn-traefik-computed-http-entry-point() {
  local value
  value="$(fn-traefik-global-http-entry-point)"
  if [[ -z "$value" ]]; then
    value="http"
  fi
  echo "$value"
}

fn-traefik-global-https-entry-point() {
  fn-plugin-property-get-default "traefik" "--global" "https-entry-point" ""
}

fn-traefik-computed-https-entry-point() {
  local value
  value="$(fn-traefik-global-https-entry-point)"
  if [[ -z "$value" ]]; then
    value="https"
  fi
  echo "$value"
}

fn-traefik-global-api-entry-point() {
  fn-plugin-property-get-default "traefik" "--global" "api-entry-point" ""
}

fn-traefik-computed-api-entry-point() {
  fn-traefik-global-api-entry-point
}

fn-traefik-global-api-entry-point-address() {
  fn-plugin-property-get-default "traefik" "--global" "api-entry-point-address" ""
}

fn-traefik-computed-api-entry-point-address() {
  fn-traefik-global-api-entry-point-address
}

fn-traefik-global-challenge-mode() {
  fn-plugin-property-get-default "traefik" "--global" "challenge-mode" ""
}

fn-traefik-computed-challenge-mode() {
  local value
  value="$(fn-traefik-global-challenge-mode)"
  if [[ -z "$value" ]]; then
    value="tls"
  fi
  echo "$value"
}

fn-traefik-global-dns-provider() {
  fn-plugin-property-get-default "traefik" "--global" "dns-provider" ""
}

fn-traefik-computed-dns-provider() {
  fn-traefik-global-dns-provider
}

fn-traefik-dns-provider-env-vars() {
  declare desc="returns all dns-provider-* environment variables"
  fn-plugin-property-get-all-by-prefix "traefik" "--global" "dns-provider-"
}