#!/usr/bin/env bash

## This script helps to setup a buildx environment for CI

set -euo pipefail

function help {
    echo
    echo "-h|--help:            To display this usage information"
    echo "--prepare:            Prepare docker buildx environment (only once for each setup)"
    echo "--src_dir <SRC_DIR>:  EMQ X source ode in this dir, default to PWD"
    echo "--profile <PROFILE>:  EMQ X profile to build, e.g. emqx, emqx-edge"
    echo "--system <SYSTEM>:    Target system e.g. debian10, centos7 etc."
    echo "--builder <BUILDER>:  Builder image to pull."
    echo "--arch <TARGET_ARCH>: Target arch to build the EMQ X package for"
    echo "--build_dest <PATH>:  Destination file output tar file"
}

while [ "$#" -gt 0 ]; do
    case $1 in
   -h|--help)
       help
        exit 0
        ;;
    --prepare)
        PREPARE='yes'
        shift
        ;;
    --src_dir)
        SRC_DIR="$2"
        shift 2
        ;;
    --profile)
        PROFILE="$2"
        shift 2
        ;;
    --system)
        SYSTEM="$2"
        shift 2
        ;;
    --builder)
        BUILDER="$2"
        shift 2
        ;;
    --arch)
        ARCH="$2"
        shift 2
        ;;
    --build_dest)
        BUILD_DEST="$2"
        shift 2
        ;;
    *)
      echo "WARN: Unknown arg (ignored): $1"
      shift
      continue
      ;;
  esac
done

if [ "${PREPARE:-}" = 'yes' ]; then
    mkdir -p $HOME/.docker
    echo '{ "experimental": "enabled" }' | tee $HOME/.docker/config.json
    echo '{ "experimental": true, "storage-driver": "overlay2", "max-concurrent-downloads": 50, "max-concurrent-uploads": 50}' | sudo tee /etc/docker/daemon.json
    sudo systemctl restart docker
    docker info
    docker buildx create --use --name mybuild
    docker run --rm --privileged tonistiigi/binfmt --install all
fi

cd "${SRC_DIR:-.}"

docker buildx build --no-cache \
    --platform=linux/$ARCH \
    -t "cross_build_emqx_for_${SYSTEM}" \
    -f .ci/build_packages/Dockerfile \
    --build-arg BUILD_FROM="$BUILDER" \
    --build-arg EMQX_NAME="$PROFILE" \
    --output type=tar,dest="$BUILD_DEST" .