#!/bin/bash
#
# android-mktemplate generates a template json file suitable for use with the
# androiddeployqt tool.

set -eu

# QT_PATH is already pre-set in our docker container environment. Includes trailing slash.
QT_PATH=${QT_PATH:-/usr/local/Qt-5.15.13/}
QT_ANDROID=${QT_ANDROID:-$QT_PATH}

ndk_version() {
	ls /opt/android-sdk/ndk/ | tail -n1
}

target_sdk_version() {
	ls /opt/android-sdk/platforms | tail -n1 | sed -re 's/android-//'
}

build_tools_version() {
	ls /opt/android-sdk/build-tools | tail -n1
}

extra_libs() {
	if [[ -d /opt/android_openssl ]] ; then
		# Our miqt Qt5 container includes these extra .so libraries
		# However, the aqtinstall-based Qt 6 container does not use them
		echo "/opt/android_openssl/ssl_1.1/arm64-v8a/libssl_1_1.so,/opt/android_openssl/ssl_1.1/arm64-v8a/libcrypto_1_1.so"
	fi
}

main() {
	
	if [[ $# -ne 2 ]] ; then
		echo "Usage: android-mktemplate.sh appname output.json" >&2
		exit 1
	fi
	local ARG_APPNAME="$1"
	local ARG_DESTFILE="$2"
	
	# Available fields are documented in the template file at
	# @ref /usr/local/Qt-5.15.13/mkspecs/features/android/android_deployment_settings.prf
	cat > "${ARG_DESTFILE}" <<EOF
{
	"_description": "Generated by miqt/android-mktemplate",
	"application-binary": "${ARG_APPNAME}",
	"architectures": {
		"arm64-v8a" : "aarch64-linux-android"
	},
	"android-extra-libs": "$(extra_libs)",
	"android-min-sdk-version": "23",
	"android-target-sdk-version": "$(target_sdk_version)",
	"ndk": "/opt/android-sdk/ndk/$(ndk_version)",
	"ndk-host": "linux-x86_64",
	"qt": "${QT_ANDROID}",
	"sdk": "/opt/android-sdk",
	"sdkBuildToolsRevision": "$(build_tools_version)",
	"stdcpp-path": "/opt/android-sdk/ndk/$(ndk_version)/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib/",
	"tool-prefix": "llvm",
	"toolchain-prefix": "llvm",
	"useLLVM": true
}
EOF
}

main "$@"