build

#!/bin/bash

github_download_release_asset() {
  local owner=$1
  local repository=$2
  local tagName=$3
  local assetName=$4

  is_200_ok=$(wget -q --show-progress --server-response https://github.com/${owner}/${repository}/releases/download/${tagName}/${assetName} 2>&1 | grep -c 'HTTP/1.1 200 OK')
  if [ $is_200_ok != "1" ]; then
    echo "Failed to get ${assetName}"
    exit 1
  fi
}

download_from_url() {
  local assetName=$1
  is_200_ok=$(wget -q --show-progress --server-response ${1} 2>&1 | grep -c 'HTTP/1.1 200 OK')
  if [ $is_200_ok != "1" ]; then
    echo "Failed to get ${assetName}"
    exit 1
  fi
}

process_external_download() {
  local url=$1
  local filename=$2

  echo Downloading \"${url}\"

  download_from_url ${url}
}

process_github_release_asset_download() {
  local owner=$1
  local repository=$2
  local assetName=$3

  if [ $releaseType == "dev" ]; then
    tagName="latest-rc"
  fi

  if [ $releaseType == "final" ]; then
    tagName="latest"
  fi

  echo Downloading \"${owner}/${repository}@${tagName}/${assetName}\"

  github_download_release_asset ${owner} ${repository} ${tagName} ${assetName}
}

extract() {
  local fileName=${1}
  case "$fileName" in
  *.zip)
    echo Extracting ${fileName}
    extract_zip ${fileName}
    rm -f ${assetFilename}
    ;;
  *.tar)
    echo Extracting ${fileName}
    extract_tar ${fileName}
    rm -f ${assetFilename}
    ;;
  esac
}

extract_zip() {
  unzip -qq ${1}
}

extract_tar() {
  tar -xf ${1}
}

process_build_file() {
  local buildType=$1
  local buildFilePath=.build
  local source=$(cat ${buildFilePath} | jq -r ".source")
  local assetFilename=""

  if [ "${source}" == "external" ]; then
    local url=$(cat ${buildFilePath} | jq -r ".url")
    assetFilename=$(cat ${buildFilePath} | jq -r ".filename")
    process_external_download ${url} ${assetFilename}

  elif [ "${source}" == "github-release-asset" ]; then
    local owner=$(cat ${buildFilePath} | jq -r ".owner")
    local repository=$(cat ${buildFilePath} | jq -r ".repository")
    assetFilename=$(cat ${buildFilePath} | jq -r ".assetName")
    process_github_release_asset_download ${owner} ${repository} ${assetFilename}
  fi

  rm $buildFilePath

  if [[ ! -z ${assetFilename} ]]; then
    extract ${assetFilename}
  fi

  if [ -d "uclibc" ]; then
    cp uclibc/* .
    rm -rf libc uclibc
  fi
}

clean() {
  echo "Cleaning..."
  rm -rf dist
}

build() {
  echo "Building..."
  test -d dist || mkdir dist
  cp -r sdcard/* dist/
  shopt -s globstar
  for buildFile in dist/**/.build; do
    pushd $(dirname ${buildFile})
    process_build_file ${1}
    popd
  done
}

package() {
  pushd dist
  zip -r sdcard.zip * -x hacks/**/libc -x hacks/**/uclibc
  popd
}

main() {
  local target=$1

  case ${target} in
  clean)
    clean
    ;;

  dev | rc | final)
    releaseType=$1

    clean
    build
    package
    ;;

  *)
    echo "Invalid target '${1}'"
    ;;
  esac
}

main $1