build.sh

#!/usr/bin/env bash

PWD=$(pwd)
FLAKE_PATH=$1

install_deps() {
  nix-env -iA attic-client -f '<nixpkgs>' || exit 1
}

free_space() {
  if [[ $INPUTS_LITTLE_SPACE == 'true' ]]; then
    echo Deleting old paths...
    rm -rf \
      ./result \
      ~/.cache/nix \
      /homeless-shelter
    
    nix store gc 
    nix store optimise
  fi
}

login() {
  if ! attic cache info $INPUTS_ATTIC_CACHE >> /dev/null ; then
    echo Configuring attic client...
    attic login local $INPUTS_ATTIC_URL $INPUTS_ATTIC_TOKEN || exit 1
  fi
}

push() {
  echo Pushing ...
  attic push $INPUTS_ATTIC_CACHE ./result
}

build_packages() {
  # Prepare VARS
  PACKAGE_ARCHS=$(nix flake show --json 2> /dev/null | jq -r '.packages | keys[]' | tr '\n' ' ')
  SUPPORTED_ARCHS_REGEX="^($(echo $system$(cat /etc/nix/nix.conf | grep extra-platforms | cut -d "=" -f 2) | tr " " "|"))$"

  # Build Packages
  if [[ "$PACKAGE_ARCHS" != "" ]]; then
    for ARCH in $PACKAGE_ARCHS; do
      if [[ "$ARCH" =~ $SUPPORTED_ARCHS_REGEX ]]; then
        PACKAGES=$(nix flake show --json 2> /dev/null | jq -r '.packages["'"$ARCH"'"] | keys[]' | tr '\n' ' ')

        if [[ "$PACKAGES" != "" ]]; then
          for PACKAGE in $PACKAGES; do
            echo Building $ARCH.$PACKAGE
            if [[ ($INPUTS_DONT_FAIL == 'true') || ($INPUTS_DONT_FAIL == '') ]]; then
              nix build --accept-flake-config .\#packages.$ARCH.$PACKAGE --max-jobs 2 --keep-going
            else
              nix build --accept-flake-config .\#packages.$ARCH.$PACKAGE --max-jobs 2
            fi
            if [ $? -eq 0 ]; then
              echo $ARCH.$PACKAGE was build!
              push
              # Frees up space if $INPUTS_LITTLE_SPACE is true
              free_space
            else
              echo $ARCH.$PACKAGE build failed!
              exit 1
            fi
              echo
              echo
          done
        else
          echo No packages for arch $ARCH in flake found!
        fi
      else
        echo $ARCH is not supported on your system!
      fi
    done
  else
    echo No packages in flake found!
  fi
}

build_systems() {
  # Prepare VARS
  SYSTEMS=$(nix flake show --json 2> /dev/null | jq -r '.nixosConfigurations | keys[]' | tr '\n' ' ')
  
  if [[ "$SYSTEMS" != "" ]]; then
    # Build systems
    for SYSTEM in $SYSTEMS; do
      SYSTEM_ARCH=$(nix repl <<< ":lf ." <<< ":p nixosConfigurations.$SYSTEM.pkgs.system" 2> /dev/null)
      if [[ "$SYSTEM_ARCH" =~ $SUPPORTED_ARCHS_REGEX ]]; then
        echo Building $SYSTEM ...
        if [[ ($INPUTS_DONT_FAIL == 'true') || ($INPUTS_DONT_FAIL == '') ]]; then
          nix build --accept-flake-config .\#nixosConfigurations.$SYSTEM.config.system.build.toplevel --max-jobs 2 --keep-going
        else
          nix build --accept-flake-config .\#nixosConfigurations.$SYSTEM.config.system.build.toplevel --max-jobs 2
        fi
        if [ $? -eq 0 ]; then
          echo $SYSTEM was build!
          push
          # Frees up space if $INPUTS_LITTLE_SPACE is true
          free_space
        else
          echo $SYSTEM build failed!
          exit 1
        fi
        echo
        echo
      else
        echo $SYSTEM_ARCH is not supported on your system!
      fi
    done
  else
    echo No systems in flake found!
  fi
}

main() {
  if [ ! -d $FLAKE_PATH ]; then 
    echo $FLAKE_PATH is not a vaild path
    echo Usage: $0 [Path to Directory with flake]
    exit 1
  fi
  if [[ $INPUTS_NO_KEEP_ATTIC_CONF == true]]; then
    rm -rf ~/.config/attic
  fi
  if [[ $INPUTS_INSTALL_DEPS == true ]]; then
    install_deps
  fi
  login

  if [[ "$FLAKE_PATH" != "" ]]; then
    cd $FLAKE_PATH
  fi

  if [[ ($INPUTS_BUILD_SYSTEMS == 'true') || ($INPUTS_BUILD_SYSTEMS == '') ]]; then
    build_systems
  fi

  if [[ $INPUTS_BUILD_PACKAGES == 'true' || ($INPUTS_BUILD_PACKAGES == '') ]]; then
    build_packages
  fi
  
  if [[ "$FLAKE_PATH" != "" ]]; then
    cd $PWD
  fi
}

main