#!/bin/bash

set -eu

# Set up environment
NDK=$ANDROID_NDK_HOME

ABI=${1:-"armeabi-v7a"}

case $ABI in
  armeabi-v7a)
    TARGET=armv7a-linux-androideabi
    NDK_API=19
    ;;
  arm64-v8a)
    TARGET=aarch64-linux-android
    NDK_API=21
    ;;
  x86)
    TARGET=i686-linux-android
    NDK_API=19
    ;;
  x86_64)
    TARGET=x86_64-linux-android
    NDK_API=21
    ;;
  *)
    exit 1
    ;;
esac

rm -rf _android_prefix
mkdir -p _android_prefix
PREFIX=$PWD/_android_prefix

TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
SYSROOT=$TOOLCHAIN/sysroot

export CC="$TOOLCHAIN/bin/$TARGET$NDK_API"-clang
export LDFLAGS=-static-libstdc++
export PKG_CONFIG_PATH="$PREFIX"/lib/pkgconfig

# Build libsodium
if [ ! -d libsodium ]; then
  git clone --branch=1.0.18 https://github.com/jedisct1/libsodium.git
fi
cd libsodium
git clean -ffdx
autoreconf -fi
./configure --prefix="$PREFIX" --host="$TARGET" --with-sysroot="$SYSROOT" --disable-shared --disable-pie
make -j"$(nproc)" install
cd ..

# Build c-toxcore
rm -rf _build
mkdir -p _build
cd _build
cmake .. \
  -DBUILD_TOXAV=OFF \
  -DBOOTSTRAP_DAEMON=OFF \
  -DCMAKE_TOOLCHAIN_FILE="$NDK/build/cmake/android.toolchain.cmake" \
  -DANDROID_ABI="$ABI" \
  -DCMAKE_INSTALL_PREFIX="$PREFIX" \
  -DCMAKE_PREFIX_PATH="$PREFIX"
cmake --build .