#!/bin/sh

# An hook script to verify what is about to be pushed.  Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed.  If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
#   <local ref> <local sha1> <remote ref> <remote sha1>

remote="$1"
url="$2"

z40=0000000000000000000000000000000000000000

IFS=' '
while read local_ref local_sha remote_ref remote_sha
do
    if [ ! "$local_sha" = $z40 ] # not deleting from remote
    then
        if [ "$remote_sha" = $z40 ]
        then
            # New branch, examine all commits
            range="$local_sha"
        else
            # Update to existing branch, examine new commits
            range="$remote_sha..$local_sha"
        fi

        if echo $url | grep 'gitlab.com[/:]fdroid/fdroidclient'; then
            # Check for DO NOT MERGE commit
            commit=`git rev-list -n 1 --grep 'DO NOT MERGE' "$range"`
            if [ -n "$commit" ]
            then
                echo "Found DO NOT MERGE commit in $local_ref, not pushing"
                exit 1
            fi

            # Check for WIP commit
            commit=`git rev-list -n 1 --grep '^WIP' "$range"`
            if [ -n "$commit" ]
            then
                echo "Found WIP commit in $local_ref, not pushing"
                exit 1
            fi
        fi

        ./gradlew checkstyle pmd lint || exit 1
    fi
done

exit 0