#!/bin/bash

# shellcheck disable=SC1091
. /etc/environment

set -Eeuxo pipefail

printf "\n\t🐋 Installing Go(lang) 🐋\t\n"

JSON=$(wget -qO- "$(jq -r '.toolcache[] | select(.name == "go") | .url' "/imagegeneration/toolset.json")" | jq --compact-output)

for V in $(jq -r '.toolcache[] | select(.name == "go") | .versions[]' "/imagegeneration/toolset.json"); do
  printf "\n\t🐋 Installing GO=%s 🐋\t\n" "${V}"
  VER=$(echo "${JSON}" | jq "[.[] | select(.version|test(\"^${V}\"))][0].version" -r)
  GOPATH="$AGENT_TOOLSDIRECTORY/go/${VER}/x64"

  # shellcheck disable=SC2174
  mkdir -v -m 0777 -p "$GOPATH"
  ARCH=$(uname -m)
  if [ "$ARCH" = x86_64 ]; then ARCH=amd64; fi
  if [ "$ARCH" = aarch64 ]; then ARCH=arm64; fi
  wget -qO- "https://golang.org/dl/go${VER}.linux-$ARCH.tar.gz" | tar -zxf - --strip-components=1 -C "$GOPATH"

  ENVVAR="${V//\./_}"
  echo "${ENVVAR}=${GOPATH}" >>/etc/environment

  printf "\n\t🐋 Installed GO 🐋\t\n"
  "$GOPATH/bin/go" version

  if [[ "${V}" == "1.15" ]]; then
    ln -s "$GOPATH/bin/*" /usr/bin/
  fi
done

printf "\n\t🐋 Cleaning image 🐋\t\n"
apt-get clean
rm -rf /var/cache/* /var/log/* /var/lib/apt/lists/* /tmp/* || echo 'Failed to delete directories'
printf "\n\t🐋 Cleaned up image 🐋\t\n"