#!/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.

# To check all components:
#
# $ check_components
#
# To check specific components:
#
# $ check_components path/to/component [path/to/component [...]]

function verbose_echo() {
  if [[ $verbose -ne 0 ]]; then
    echo "$*"
  fi
}

verbose=0
checks=""
components=""
while [[ $# -gt 0 ]]; do
  case $1 in
    "-h" | "--help")
      echo "Usage: $0 [-h] [-v] [-c check_script ...] [path/to/component ...]"
      echo
      echo "Check all components with all checks:"
      echo "\$ $0"
      echo
      echo "Do the same but report what is going on:"
      echo "\$ $0 -v"
      echo
      echo "Check all components with scripts/check/script1 scripts/check/script2:"
      echo "\$ $0 -c scripts/check/script1 -c scripts/check/script2"
      echo
      echo "Check only components/Foo and components/private/Bar:"
      echo "\$ $0 components/Foo components/private/Bar"
      exit 0
    ;;
    "-v" | "--verbose")
      verbose=1
      shift 1
    ;;
    "-c" | "--check")
      checks="$checks $2"
      shift 2
    ;;
    *)
      components="$components $1"
      shift 1
    ;;
  esac
done

readonly SCRIPTS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
readonly ROOT_DIR=$(dirname "$SCRIPTS_DIR")
verbose_echo "SCRIPTS_DIR: $SCRIPTS_DIR"
verbose_echo "ROOT_DIR: $ROOT_DIR"

# If no component listed on the command line, find them all.
if [[ -z "$components" ]]; then
  readonly PUBLIC_COMPONENTS=$($SCRIPTS_DIR/list_components --public)
  readonly PRIVATE_COMPONENTS=$($SCRIPTS_DIR/list_components --private)
  components="$PUBLIC_COMPONENTS $PRIVATE_COMPONENTS"
fi
verbose_echo "components: $components"

# Find all the check scripts.
if [[ -z "$checks" ]]; then
  checks=$(find $SCRIPTS_DIR/check -type f -perm +111)
fi 
verbose_echo "checks: $checks"

# Run through each component, running each check in turn.
# Keep track of the number that fail any check.
verbose_echo
failed=""
for component in $components; do 
  echo "Checking $component ..."

  all_checks_passed=1
  for check in $checks; do
    $check $component
    if [[ $? -ne 0 ]]; then
      all_checks_passed=0
    fi
  done

  if [[ $all_checks_passed -ne 1 ]]; then
    failed="$failed $component"
  fi
  echo
done
echo

if [[ -z $failed ]]; then
  echo Component checks passed.
else
  echo "The following components failed:"
  for i in $failed; do
    echo $i
  done
fi