#
#   Copyright 2016 Telefónica Investigación y Desarrollo, S.A.U.
#
#   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.
#
#!/bin/sh

# Change log:
# 1. Bug 722 : Jayant Madavi : JM00553988@techmahindra.com : Enhancement to use new fossology server. Had to change the variable name at #    couple of places, while scanning the variable name was adding curl as a license.
# 2. Bug 542 : Jayant Madavi, Mrityunjay Yadav : JM00553988@techmahindra.com : 24-jul-2019 : Enhancement to raise exit in case files modified or added does #    not contain license.
# 3. 
 
echo GERRIT BRANCH is $GERRIT_BRANCH
dpkg -l wget &>/dev/null ||sudo apt-get install -y wget
dpkg -l curl &>/dev/null ||sudo apt-get install -y curl
#Curl can be used instead of wget:
#curl -s -X POST -d @$file https://osm.etsi.org/fossology/?mod=agent_nomos_once

apache=0
nolicense=0
other=0

git fetch

RE="FATAL: your file did not get passed through"

for file in $(git diff --name-only origin/$GERRIT_BRANCH -- . ':!*.png' ':!*.jp*g' ':!*.gif' ':!*.json'); do
    if [ -f $file ]; then
        if [ -s $file ]; then
            licnse=$(curl -s -X POST  -H 'Accept: text' -H 'Cache-Control: no-cache' -H 'Connection: keep-alive'  -H 'Content-Type: multipart/form-data'  -H 'cache-control: no-cache'  -F "file_input=@\"$file\""  -F 'showheader=1' https://fossology-osm.etsi.org/?mod=agent_nomos_once |grep "A one shot license analysis shows the following license(s) in file"|sed -n 's:.*<strong>\(.*\)</strong>.*:\1:p' |xargs)
            result=$(echo $licnse | grep "$RE")
            if [ -n "$result" ]; then
                # possibly we have exceeded the post rate
                sleep 10
                licnse=$(curl -s -X POST  -H 'Accept: text' -H 'Cache-Control: no-cache' -H 'Connection: keep-alive'  -H 'Content-Type: multipart/form-data'  -H 'cache-control: no-cache'  -F "file_input=@\"$file\""  -F 'showheader=1' https://fossology-osm.etsi.org/?mod=agent_nomos_once |grep "A one shot license analysis shows the following license(s) in file"|sed -n 's:.*<strong>\(.*\)</strong>.*:\1:p' |xargs)
            fi
        else
            licnse="No_license_found"
        fi
    else
        licnse="DELETED"
    fi
    echo "$file $licnse"
    case "$licnse" in
        "Apache-2.0")
            apache=$((apache + 1))
            ;;
        "No_license_found")
            nolicense=$((nolicense + 1))
            ;;
        "DELETED")
            ;;
        "FATAL:*")
            ;;
        *)
            echo "BAD LICENSE ON FILE $file"
            other=$((other + 1))
            ;;
    esac
done

if [ $other -gt 0 ]; then
    echo "FATAL: Non-apache licenses detected"
    exit 2
fi

if [ $nolicense -gt 0 ]; then
    echo "FATAL: Unlicensed files found"
	exit 2
fi

exit 0