#!/bin/bash

if [[ "$BUILD_DIR" == *"IBDesignables"* ]] || [[ "$BUILD_DIR" == *"Previews"* ]] ; then
    echo "do nothing when building for IBDesignables/SwiftUI Previews builds";
    exit 0
fi

set -e

if [[ -z "$MARKETING_VERSION" ]] ; then
    VERS="$MARKETING_VERSION"
else
    VERS=$(/usr/libexec/PlistBuddy "${INFOPLIST_FILE}" -c "print CFBundleShortVersionString")
fi
REV=$(git rev-parse --short HEAD)
if [ "$?" -eq "0" ] && [ "$CONFIGURATION" == "Debug" ] ; then
    REV=$VERS"-"$REV;
    if ! git diff-index --quiet HEAD -- ; then
        REV="$REV-mod"
    fi
else
    REV=$VERS;
fi

TMPFILE=$(mktemp /tmp/version.h.XXXXXXXXXX)

echo "#define AppVersionString @\"$REV\"" > $TMPFILE

if [[ ! -e ${PROJECT_DIR}/version.h ]] || [[ ! -z $(diff ${PROJECT_DIR}/version.h $TMPFILE) ]] ; then
    mv $TMPFILE ${PROJECT_DIR}/version.h
else
    rm $TMPFILE
fi