build.sh

#!/usr/bin/env bash
# Usage:
#    build.sh --board nice_nano_v2 --left leeloo_left --right leeloo_right
#
set -eou pipefail

# TODO:
# - https://github.com/zmkfirmware/zmk/blob/main/.github/workflows/build-user-config.yml

# https://hub.docker.com/r/zmkfirmware/zmk-build-arm
ZMK_IMAGE="zmkfirmware/zmk-build-arm:stable"

main() {
  local board='' shield_left='' shield_right='' script='' GID
  GID="$(id -g)"

  while true; do
    case "${1:-}" in
      --board)
        board="$2"
        shift 2
        ;;
      --left)
        shield_left="$2"
        shift 2
        ;;
      --right)
        shield_right="$2"
        shift 2
        ;;
      *) break ;;
    esac
  done

  if [[ -z "${board}${shield_left}${shield_right}" ]]; then
    echo 'Specify --board <board> --left <shield> --right <shield>'
    return 1
  fi

  rm -rf build/*.out

  script="
    cd /keeb

    if [ ! -d .west ]; then
      west init -l config
    fi

    if [ ! -d zmk ]; then
      west update
    fi

    west zephyr-export

    echo 'Building left'
    west build --pristine -b $board zmk/app -- \
      -DSHIELD=$shield_left \
      -DZMK_CONFIG=/keeb/config
    cp /keeb/build/zephyr/zmk.uf2 /build/${shield_left}-${board}-zmk.uf2.out
    chown $UID:$GID /build/${shield_left}-${board}-zmk.uf2.out
    chown $UID:$GID /build
  "

  if [[ -n "$shield_right" ]]; then
    script="$script
      echo 'Building right'
      west build --pristine -b $board zmk/app -- \
        -DSHIELD=$shield_right \
        -DZMK_CONFIG=/keeb/config
      cp /keeb/build/zephyr/zmk.uf2 /build/${shield_right}-${board}-zmk.uf2.out
      chown $UID:$GID /build/${shield_right}-${board}-zmk.uf2.out
    "
  fi

  docker run -it --rm \
    -v "$(pwd)/.cache:/keeb" \
    -v "$(pwd)/config:/keeb/config:ro" \
    -v "$(pwd)/build:/build" \
    "$ZMK_IMAGE" sh -c "$script"

  if [[ ! -e "build/${shield_left}-${board}-zmk.uf2.out" ]]; then
    echo ''
    echo '-- Errors in building'
    exit 1
  fi

  echo ''
  echo '-- Done'

  rm -f build/${shield_left}-${board}-zmk.uf2
  mv build/${shield_left}-${board}-zmk.uf2{.out,}
  ls -la build/${shield_left}-${board}-zmk.uf2

  if [[ -f "build/${shield_right}_${board}.uf2.out" ]]; then
    rm -f build/${shield_right}-${board}-zmk.uf2
    mv build/${shield_right}-${board}-zmk.uf2{.out,}
    ls -la build/${shield_right}-${board}-zmk.uf2
  fi
}

main "$@"

# Thanks to https://git.lyte.dev/lytedev/keyboards/src/branch/master/zorne/build.fish