run

#!/bin/bash
CWD="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
cd "${CWD}" || exit 1
# shellcheck source=./lib/log.sh
source "${CWD}"/lib/log.sh

# to use APT proxy, run: ./image start-apt-cache
APT_PROXY=
APT_PROXY="http://$(ip -o route get to 8.8.8.8 | sed -n 's/.*src \([0-9.]\+\).*/\1/p'):3142"

HAS_DOCKER=$(docker -v 2>/dev/null || false)
HAS_BUILDX=$(docker buildx version 2>/dev/null || false)

start-apt-cache() {
  cd "${CWD}"/apt-cache || exit 1
  docker compose up -d
  cd .. || exit 1
}

stop-apt-cache() {
  cd "${CWD}"/apt-cache || exit 1
  docker compose down -v
  cd .. || exit 1
}

check-apt() {
  cd "${CWD}"/apt-cache || exit 1
  if [ "$(docker compose ps -q)" != "" ]; then
    log log "APT-Cache is running..."
  else
    log inf "Starting APT-Cache..."
    start-apt-cache
  fi
  cd .. || exit 1
}

check-docker() {
  log inf "Docker: [4[${HAS_DOCKER}]], [6[${HAS_BUILDX}]]"
  if [ -z "${HAS_DOCKER}" ] || [ -z "${HAS_BUILDX}" ]; then
    log err "Cannot find Docker or BuildX. Please install them."
    exit 1
  fi
}

settings() {
  if [ ! -f ./settings.env ]; then
    cat > settings.env << __EOF__
# Settings file for the openwebrx-deb-builder
# shellcheck disable=SC2148,SC2034 shell=bash

# Architectures to build for (space separated list in brackets):
# possible values: amd64 arm64 armhf
ARCHITECTURES=(amd64 arm64 armhf)

# setup multi-job compile to all CPU cores, but leave 4 for the system
MAKEFLAGS=-j$(nproc --ignore=4)

# Packages to compile. Set to 'y' or 'n'.
# NOTE: the builder will compile the dependency packages too.
BUILD_OWRX=y
BUILD_CSDR=n
BUILD_PYCSDR=n
BUILD_CSDR_ETI=n
BUILD_PYCSDR_ETI=n
BUILD_OWRXCONNECTOR=n
BUILD_SOAPYSDRPLAY3=n
BUILD_CODECSERVER=n
BUILD_DIGIHAM=n
BUILD_PYDIGIHAM=n
BUILD_JS8PY=n
BUILD_REDSEA=n
BUILD_LIBACARS=n
BUILD_ACARSDEC=n
BUILD_NRSC5=n
BUILD_CWSKIMMER=n

# If you are going to push the builder image to dockerhub,
# you should set your username and use 'docker login' command.
# If you do not know what this is, do not touch these variables.
PUSH_TO_DOCKERHUB=n
REGISTRY="docker.com"
REGISTRYUSER="slechev"
IMAGE_NAME="openwebrxplus-deb-builder"

# vim: set ft=sh
__EOF__
  fi
	${EDITOR:-vim} ./settings.env
}


create() {
	source ./settings.env
	if [ "${PUSH_TO_DOCKERHUB:-}" == "y" ]; then DOCKER_PUSH='--push'; else DOCKER_PUSH='--load'; fi
  if [ ${#ARCHITECTURES[@]} -gt 1 ] && [ "${PUSH_TO_DOCKERHUB:-}" != "y" ]; then
    log err "Creating multi-arch builders is supported only if you push to docker hub. Reduce to one arch only if you are going to create a builder locally."
    exit 1
  fi
	log inf "Creating builders with Docker/BuildX"
	docker buildx create --name owrxp-builder --driver docker-container --bootstrap --use --driver-opt network=host || true

	for file in docker/Dockerfile*; do
		IMAGE_TAG=$(echo "${file}" | sed -e 's/^docker\/Dockerfile-//' )
		log inf "Creating builders for [6[${IMAGE_TAG}]]"

		PLATFORMS=""
		for arch in "${ARCHITECTURES[@]}"; do
			PLATFORMS="${PLATFORMS},linux/$arch"
		done
		PLATFORMS=$(echo "${PLATFORMS}" | cut -c2-)

		log inf "[6[${IMAGE_TAG}]] creating builders for [5[${PLATFORMS}]]"
		time docker buildx build \
      --tag "${REGISTRYUSER}/${IMAGE_NAME}:${IMAGE_TAG}" \
      --platform "${PLATFORMS}" \
      ${DOCKER_PUSH} \
      -f "${file}" \
		.
	done

	docker buildx rm --keep-state owrxp-builder
}

build() {
	source ./settings.env
	log inf "Building packages with Docker/BuildX"
	for file in docker/Dockerfile*; do
		IMAGE_TAG=$(echo "${file}" | sed -e 's/^docker\/Dockerfile-//' )
		for arch in "${ARCHITECTURES[@]}"; do
			distro=$(echo "${IMAGE_TAG}" | cut -d '-' -f 1)
			release=$(echo "${IMAGE_TAG}" | cut -d '-' -f 2)
			log inf "running [4[${distro}]] [6[${release}]] build for [5[${arch}]]"
			mkdir -p "owrx/${distro}/${release}/${arch}"
			time docker run -it --rm --platform "linux/${arch}" \
				--name "owrx-build-${IMAGE_TAG}" \
        -e APT_PROXY="${APT_PROXY}" \
        -e OUTPUT_DIR="/output/${arch}" \
        -e MAKEFLAGS="${MAKEFLAGS}" \
				-v "${CWD}/owrx/${distro}/${release}/:/output" \
        -v "${CWD}/settings.env:/settings.env" \
        -v "${CWD}/scripts:/scripts" \
				"${REGISTRYUSER}/${IMAGE_NAME}:${IMAGE_TAG}"
		done
	done

}

## MAIN
log "Builder for OpenWebRX+ DEB Packages"
check-docker
check-apt

usage() {
  log war "Usage: $0 [command]"
  log war ". commands:"
  log war "... [5[build]] - build DEB packages from settings"
  log war "... [5[create]] - create docker builders"
  log war "... [5[settings]] - create and/or edit settings"
  log war "... [5[start-apt-cache]] - to start apt-cache docker container"
  log war "... [5[stop-apt-cache]] - to stop apt-cache docker container"
  echo
  log war "NOTE: to clear the caches, you should remove the 'buildx' volume and the 'cache' folder."
}


if [[ $(type -t "$1") == 'function' ]]; then
  $1 "$@"
else
  [ "$1" != "" ] && log err "Command '$1' not found..." && echo
  usage
fi