#!/bin/bash

SOURCES=()

MKSOURCES=""

CURDIR=`pwd -P`

# Fetch sources

if [[ $# -ge 2 ]]; then

    for src in ${@:2}

    do

        SOURCES+=($src)

        MKSOURCES="$MKSOURCES $(basename $src)"

    done

else

    if [ -n "$1" ]; then

        while read src

        do

            SOURCES+=($src)

            MKSOURCES="$MKSOURCES $(basename $src)"

        done

    fi

fi

if [ -z "$1" ] || [ -z "$SOURCES" ]; then

    echo "Usage: androidbuild.sh com.yourcompany.yourapp < sources.list"

    echo "Usage: androidbuild.sh com.yourcompany.yourapp source1.c source2.c ...sourceN.c"

    echo "To copy SDL source instead of symlinking: COPYSOURCE=1 androidbuild.sh ... "

    echo "You can pass additional arguments to ndk-build with the NDKARGS variable: NDKARGS=\"-s\" androidbuild.sh ..."

    exit 1

fi

SDLPATH="$( cd "$(dirname "$0")/.." ; pwd -P )"

NDKBUILD=`which ndk-build`

if [ -z "$NDKBUILD" ];then

    echo "Could not find the ndk-build utility, install Android's NDK and add it to the path"

    exit 1

fi

ANDROID=`which android`

if [ -z "$ANDROID" ];then

    echo "Could not find the android utility, install Android's SDK and add it to the path"

    exit 1

fi

ANT=`which ant`

if [ -z "$ANT" ];then

    echo "Could not find the ant utility, install Android's SDK and add it to the path"

    exit 1

fi

NCPUS="1"

case "$OSTYPE" in

    darwin*)

        NCPU=`sysctl -n hw.ncpu`

        ;; 

    linux*)

        if [ -n `which nproc` ]; then

            NCPUS=`nproc`

        fi  

        ;;

  *);;

esac

APP="$1"

APPARR=(${APP//./ })

BUILDPATH="$SDLPATH/build/$APP"

# Start Building

rm -rf $BUILDPATH

mkdir -p $BUILDPATH

cp -r $SDLPATH/android-project/* $BUILDPATH

# Copy SDL sources

mkdir -p $BUILDPATH/jni/SDL

if [ -z "$COPYSOURCE" ]; then

    ln -s $SDLPATH/src $BUILDPATH/jni/SDL

    ln -s $SDLPATH/include $BUILDPATH/jni/SDL

else

    cp -r $SDLPATH/src $BUILDPATH/jni/SDL

    cp -r $SDLPATH/include $BUILDPATH/jni/SDL

fi

cp -r $SDLPATH/Android.mk $BUILDPATH/jni/SDL

sed -i -e "s|YourSourceHere.c|$MKSOURCES|g" $BUILDPATH/jni/src/Android.mk

sed -i -e "s|org\.libsdl\.app|$APP|g" $BUILDPATH/AndroidManifest.xml

# Copy user sources

for src in "${SOURCES[@]}"

do

    cp $src $BUILDPATH/jni/src

done

# Create an inherited Activity

cd $BUILDPATH/src

for folder in "${APPARR[@]}"

do

    mkdir -p $folder

    cd $folder

done

ACTIVITY="${folder}Activity"

sed -i -e "s|SDLActivity|$ACTIVITY|g" $BUILDPATH/AndroidManifest.xml

sed -i -e "s|SDLActivity|$APP|g" $BUILDPATH/build.xml

# Fill in a default Activity

echo "package $APP;" >  "$ACTIVITY.java"

echo "import org.libsdl.app.SDLActivity;" >> "$ACTIVITY.java"

echo "public class $ACTIVITY extends SDLActivity {}" >> "$ACTIVITY.java"

# Update project and build

cd $BUILDPATH

$ANDROID update project --path $BUILDPATH

$NDKBUILD -j $NCPUS $NDKARGS

$ANT debug

cd $CURDIR

APK="$BUILDPATH/bin/$APP-debug.apk"

if [ -f "$APK" ]; then

    echo "Your APK is ready at $APK"

    echo "To install to your device: "

    echo "cd  $BUILDPATH"

    echo "ant debug install"

    exit 0

fi

echo "There was an error building the APK"

exit 1