#!/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-builder-dockerfile-computed-dockerfile-path() {
  declare APP="$1"

  file="$(fn-builder-dockerfile-dockerfile-path "$APP")"
  if [[ "$file" == "" ]]; then
    file="$(fn-builder-dockerfile-global-dockerfile-path "$APP")"
  fi
  if [[ "$file" == "" ]]; then
    file="Dockerfile"
  fi

  echo "$file"
}

fn-builder-dockerfile-global-dockerfile-path() {
  declare APP="$1"

  fn-plugin-property-get-default "builder-dockerfile" "--global" "dockerfile-path" ""
}

fn-builder-dockerfile-dockerfile-path() {
  declare APP="$1"

  fn-plugin-property-get-default "builder-dockerfile" "$APP" "dockerfile-path" ""
}

fn-builder-dockerfile-get-ports-from-dockerfile() {
  declare desc="return all exposed ports from passed file path"
  declare DOCKERFILE_PATH="$1"

  suppress_output dos2unix "$DOCKERFILE_PATH"
  local ports="$(grep -E "^EXPOSE " "$DOCKERFILE_PATH" | awk '{ print $2 }' | xargs)" || true
  echo "$ports"
}

fn-builder-dockerfile-get-ports-from-image() {
  declare desc="return all exposed ports from passed image name"
  declare IMAGE="$1"

  # shellcheck disable=SC2016
  local ports="$("$DOCKER_BIN" image inspect --format '{{range $key, $value := .Config.ExposedPorts}}{{$key}} {{end}}' "$IMAGE" | xargs)" || true
  echo "$ports"
}

fn-builder-dockerfile-get-detect-port-map() {
  declare desc="extracts and echos a port mapping from the app"
  declare APP="$1" IMAGE="$2" DOCKERFILE_PATH="$3"

  local detected_ports=$(fn-builder-dockerfile-get-ports-from-dockerfile "$DOCKERFILE_PATH")

  if [[ -z "$detected_ports" ]]; then
    local detected_ports=$(fn-builder-dockerfile-get-ports-from-image "$IMAGE")
  fi

  if [[ -n "$detected_ports" ]]; then
    local port_map=""
    for p in $detected_ports; do
      if [[ "$p" =~ .*udp.* ]]; then
        p=${p//\/udp/}
        port_map+="udp:$p:$p "
      else
        scheme="http"
        p=${p//\/tcp/}
        if [[ "$p" == "443" ]]; then
          scheme="https"
        fi
        port_map+="$scheme:$p:$p "
      fi
    done
    echo "$port_map" | xargs
  else
    # ensure we have a port mapping
    plugn trigger ports-configure "$APP"
    echo "http:$(plugn trigger ports-get-property "$APP" proxy-port):5000"
  fi
}