#!/bin/bash

set -euo pipefail

GOOS=$(go env GOOS)
case $GOOS in
linux)
	__sdk_dir=$HOME/Android/Sdk
	;;
darwin)
	__sdk_dir=$HOME/Library/Android/sdk
	;;
*)
	echo "FATAL: unsupported operating system" 1>&2
	exit 1
	;;
esac

ANDROID_HOME=${ANDROID_HOME:-$__sdk_dir}

__clitools_version=8512546
__clitools_file=commandlinetools-linux-${__clitools_version}_latest.zip
__clitools_sha256=2ccbda4302db862a28ada25aa7425d99dce9462046003c1714b059b5c47970d8

printf "checking for curl... "
command -v curl || {
	echo "not found"
	exit 1
}
printf "checking for shasum... "
command -v shasum || {
	echo "not found"
	exit 1
}
printf "checking for unzip... "
command -v unzip || {
	echo "not found"
	exit 1
}

set -x
rm -rf $ANDROID_HOME/cmdline-tools/latest
curl -fsSLO https://dl.google.com/android/repository/$__clitools_file
echo "$__clitools_sha256  $__clitools_file" >__SHA256
shasum --check __SHA256
rm -f __SHA256
unzip $__clitools_file
rm $__clitools_file
mkdir -p $ANDROID_HOME/cmdline-tools
# See https://stackoverflow.com/a/61176718 to understand why
# we need to reorganize the directories like this:
mv cmdline-tools $ANDROID_HOME/cmdline-tools/latest