#!/usr/bin/env bash
##
## Download all package sources and install all build tools whether possible,
## so they will be available offline.
##

set -e -u

if [ "$(uname -o)" = "Android" ] || [ "$(uname -m)" != "x86_64" ]; then
	echo "This script supports only x86_64 GNU/Linux systems."
	exit 1
fi

export TERMUX_SCRIPTDIR="$(dirname "$(readlink -f "$0")")/../"
mkdir -p "$TERMUX_SCRIPTDIR"/build-tools

export TERMUX_PACKAGES_OFFLINE=true
export TERMUX_ARCH=aarch64
export TERMUX_ON_DEVICE_BUILD=false
export TERMUX_PKG_TMPDIR=$TERMUX_SCRIPTDIR/build-tools/_tmp
export TERMUX_COMMON_CACHEDIR=$TERMUX_PKG_TMPDIR
export CC=gcc CXX=g++ LD=ld AR=ar STRIP=strip PKG_CONFIG=pkg-config
export CPPFLAGS="" CFLAGS="" CXXFLAGS="" LDFLAGS=""
mkdir -p "$TERMUX_PKG_TMPDIR"

# Build tools.
. "$TERMUX_SCRIPTDIR"/scripts/build/termux_download.sh
(. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_cmake.sh
	termux_setup_cmake
)
# GHC fails. Skipping for now.
#(. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_ghc.sh
#	termux_setup_ghc
#)
(. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_golang.sh
	termux_setup_golang
)
(
	. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_ninja.sh
	. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_meson.sh
	termux_setup_meson
)
(. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_protobuf.sh
	termux_setup_protobuf
)
# Offline rust is not supported yet.
#(. "$TERMUX_SCRIPTDIR"/scripts/build/setup/termux_setup_rust.sh
#	termux_setup_rust
#)
rm -rf "${TERMUX_PKG_TMPDIR}"
(test -d "$TERMUX_SCRIPTDIR"/build-tools/android-sdk && test -d "$TERMUX_SCRIPTDIR"/build-tools/android-ndk && exit 0
	"$TERMUX_SCRIPTDIR"/scripts/setup-android-sdk.sh
)

# Package sources.
for p in "$TERMUX_SCRIPTDIR"/packages/*; do
	(
		. "$TERMUX_SCRIPTDIR"/scripts/properties.sh
		. "$TERMUX_SCRIPTDIR"/scripts/build/get_source/termux_step_get_source.sh
		. "$TERMUX_SCRIPTDIR"/scripts/build/get_source/termux_git_clone_src.sh
		. "$TERMUX_SCRIPTDIR"/scripts/build/get_source/termux_download_src_archive.sh
		. "$TERMUX_SCRIPTDIR"/scripts/build/get_source/termux_unpack_src_archive.sh

		# Disable archive extraction in termux_step_get_source.sh.
		termux_extract_src_archive() {
			:
		}

		TERMUX_PKG_NAME=$(basename "$p")
		TERMUX_PKG_BUILDER_DIR="${p}"
		TERMUX_PKG_CACHEDIR="${p}/cache"
		TERMUX_PKG_METAPACKAGE=false

		# Set some variables to dummy values to avoid errors.
		TERMUX_PKG_TMPDIR="${TERMUX_PKG_CACHEDIR}/.tmp"
		TERMUX_PKG_SRCDIR="${TERMUX_PKG_CACHEDIR}/.src"
		TERMUX_PKG_BUILDDIR="$TERMUX_PKG_SRCDIR"
		TERMUX_PKG_HOSTBUILD_DIR=$TERMUX_PKG_TMPDIR
		TERMUX_PREFIX=/data/data/com.termux/files/usr
		TERMUX_ANDROID_HOME=/data/data/com.termux/files/home
		TERMUX_HOST_PLATFORM=aarch64-linux-android
		TERMUX_ARCH_BITS=64
		TERMUX_BUILD_TUPLE=x86_64-pc-linux-gnu
		TERMUX_PKG_GIT_BRANCH=""

		mkdir -p "$TERMUX_PKG_CACHEDIR" "$TERMUX_PKG_TMPDIR" "$TERMUX_PKG_SRCDIR"
		cd "$TERMUX_PKG_CACHEDIR"

		. "${p}"/build.sh
		if ! ${TERMUX_PKG_METAPACKAGE}; then
			echo "Downloading sources for '$TERMUX_PKG_NAME'..."
			termux_step_get_source

			# Delete dummy src and tmp directories.
			rm -rf "$TERMUX_PKG_TMPDIR" "$TERMUX_PKG_SRCDIR"
		fi
	)
done