#!/bin/bash
#
# Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

readonly COMPONENT_DIR=$1
readonly COMPONENT_NAME=$(basename $COMPONENT_DIR)
readonly SCRIPTS_DIR="$(dirname $(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd))"
readonly ROOT_DIR=$(dirname "$SCRIPTS_DIR")
readonly ICONS_DIR="$ROOT_DIR/site-source/jekyll-site-src/images/custom_icons"
readonly ICONS_CSS="$ROOT_DIR/site-source/jekyll-site-src/_sass/_icons.scss"

if [ ! -d $ICONS_DIR ]; then
  echo "Error: Could not find the icons directory at '$ICONS_DIR'."
  echo "Please run scripts/build_site.sh once to install the site sources."
  exit -1
fi

# Private components do not require an icon.
if [[ $COMPONENT_DIR != *"/private/"* ]]; then
  # Check for the icon on disk.
  readonly UNDERSCORE_NAME=$($SCRIPTS_DIR/convert_name -m underscore $COMPONENT_NAME)
  readonly ICON_NAME="ic_${UNDERSCORE_NAME}_24px.svg"
  if [ ! -f "$ICONS_DIR/$ICON_NAME" ]; then
    echo "Error: '$ICONS_DIR' is missing '$ICON_NAME'."
    exit -1
  fi

  # Check for a reference to the icon in the _icons.scss.
  GREP_OPTIONS="--quiet"
  GREP_PATTERN="background-image:.*images/custom_icons/$ICON_NAME"
  if ! grep $GREP_OPTIONS -- $GREP_PATTERN $ICONS_CSS; then
    echo "Error: Could not find entry for $ICON_NAME in '$ICONS_CSS'."
    exit -1
  fi
fi