#!/bin/bash

# Copyright (C) 2019 The Android Open Source Project
#
# 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.

if [ "$1" == "--help" -o "$1" == "-h" ]; then
echo "Usage: apilint [FILTERS...]"
echo "  Shows lint from currently open files (as diffed from HEAD), i.e. errors"
echo "  you will receive if you upload this CL."
echo
echo "Usage: apilint --all [FILTERS...]"
echo "  Shows all lint errors present in the current working directory, regardless"
echo "  of when they were added."
echo
echo "Usage: apilint --level API_LEVEL [FILTERS...]"
echo "  Shows lint as it stands in API_LEVEL"
echo
echo "Usage: apilint --shal SHA [FILTERS...]"
echo "  Shows lint from locally commited git change SHA."
echo
echo "Usage: apilint --unreleased [FILTERS...]"
echo "  Shows all lint errors in the current working directory directory added since"
echo "  the last released SDK version."
echo
echo "FILTERS"
echo "  List of class or package names by which to filter the results."
echo
exit
fi

if [ \( -z "$ANDROID_BUILD_TOP" \) \
           -a \( ! -f frameworks/base/api/current.txt \) \
           -a \( ! -f frameworks/base/api/system-current.txt \) \
        ]; then
    echo "apilint must be run either with ANDROID_BUILD_TOP set or from the" 1>&2
    echo "root of the android source tree" 1>&2
    exit 1
fi

if [ ${ANDROID_BUILD_TOP:0:1} != "/" ]; then
    echo "ANDROID_BUILD_TOP must be an absolute path, not: $ANDROID_BUILD_TOP" 1>&2
    exit 1
fi

if [ -z "$ANDROID_BUILD_TOP" ]; then
    ANDROID_BUILD_TOP=$(pwd)
fi

FW_BASE=$ANDROID_BUILD_TOP/frameworks/base

MODE=open

OPTIONS=$(getopt -n apilint -o "" -l "all,sha:,unreleased" -- "$@")

[ $? -eq 0 ] || { 
    exit 1
}

eval set -- "$OPTIONS"
while true; do
    case "$1" in
    --all)
        MODE=all
        ;;
    --sha)
        shift; # The arg is next in position args
        MODE=sha
        SHA=$1
        ;;
    --unreleased)
        MODE=unreleased
        ;;
    --)
        shift
        break
        ;;
    esac
    shift
done
FILTERS=
for var in "$@"
do
    FILTERS="$FILTERS --filter $var"
done

if [ $MODE = "all" ]; then
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SDK" \
            $FILTERS \
            $ANDROID_BUILD_TOP/frameworks/base/api/current.txt
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SystemApi" \
            $FILTERS \
            --base-current $ANDROID_BUILD_TOP/frameworks/base/api/current.txt \
            $ANDROID_BUILD_TOP/frameworks/base/api/system-current.txt
elif [ $MODE = "open" ]; then
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SDK" \
            $FILTERS \
            $ANDROID_BUILD_TOP/frameworks/base/api/current.txt \
            <(cd $FW_BASE ; git show HEAD:api/current.txt)
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SystemApi" \
            $FILTERS \
            --base-current $ANDROID_BUILD_TOP/frameworks/base/api/current.txt \
            --base-previous <(cd $FW_BASE ; git show HEAD:api/current.txt) \
            $ANDROID_BUILD_TOP/frameworks/base/api/system-current.txt \
            <(cd $FW_BASE ; git show HEAD:api/system-current.txt)
elif [ $MODE = "sha" ]; then
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SDK" \
            $FILTERS \
            <(cd $FW_BASE ; git show $SHA:api/current.txt) \
            <(cd $FW_BASE ; git show $SHA^:api/current.txt)
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SystemApi" \
            $FILTERS \
            --base-current <(cd $FW_BASE ; git show $SHA:api/current.txt) \
            --base-previous <(cd $FW_BASE ; git show $SHA^:api/current.txt) \
            <(cd $FW_BASE ; git show $SHA:api/system-current.txt) \
            <(cd $FW_BASE ; git show $SHA^:api/system-current.txt)
elif [ $MODE = "unreleased" ]; then
    LAST_SDK=$(ls $ANDROID_BUILD_TOP/prebuilts/sdk | grep "^[0-9][0-9]*$" | sort -n | tail -n 1)
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SDK" \
            $FILTERS \
            $ANDROID_BUILD_TOP/frameworks/base/api/current.txt \
            $ANDROID_BUILD_TOP/prebuilts/sdk/$LAST_SDK/public/api/android.txt
    python2.7 -B $ANDROID_BUILD_TOP/frameworks/base/tools/apilint/apilint.py \
            --title "SystemApi" \
            $FILTERS \
            --base-current $ANDROID_BUILD_TOP/frameworks/base/api/current.txt \
            --base-previous $ANDROID_BUILD_TOP/prebuilts/sdk/$LAST_SDK/public/api/android.txt \
            $ANDROID_BUILD_TOP/frameworks/base/api/system-current.txt \
            $ANDROID_BUILD_TOP/prebuilts/sdk/$LAST_SDK/system/api/android.txt
fi