#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020-present Fewtarius

###
### Simple script to build JELOS
###

if [ !"${ARCH}" == true ]
then
  echo "export ARCH before building."
  exit 1
fi

### Remember to make this more dynamic.
export DISTRO="JELOS"

export OS_VERSION=$(date +%Y%m%d)
export BUILD_DATE=$(date)

echo "Building ${DISTRO} for ${DEVICE}"

# If DEVICE_ROOT is defined and not the device being built, make sure that the
# build folder is a link to root rather than a folder.

if [ -n "${DEVICE_ROOT}" ]
then

  if [ ! "${DEVICE_ROOT}" = "${DEVICE}" ]
  then
    # Ensure there isn't a left over build directory.
    if [ -d "build.${DISTRO}-${DEVICE}.${ARCH}" ]
    then
      echo "Removing stale build root."
      rm -rf build.${DISTRO}-${DEVICE}.${ARCH}
    fi

    if [ ! -d "build.${DISTRO}-${DEVICE_ROOT}.${ARCH}" ]
    then
      echo "Building the device root (${DEVICE_ROOT})."
      make ${DEVICE_ROOT}
    fi

    # Link back to the DEVICE_ROOT so we can re-use the build directory to save space.
    if [ ! -L "build.${DISTRO}-${DEVICE}.${ARCH}" ]
    then
      ln -sf build.${DISTRO}-${DEVICE_ROOT}.${ARCH} build.${DISTRO}-${DEVICE}.${ARCH}
    fi
  fi

  # If DEVICE_ROOT is defined, take additional clean steps to ensure everything is built
  # properly for all devices including the root device.

  CLEAN_OS="system-utils busybox linux grub u-boot SDL2 retroarch mesa"

  CLEAN_EMUS="mupen64plus-nx mupen64plus flycast_libretro dosbox-pure \
             gpsp PPSSPPSDL mupen64plussa-core mupen64plussa-input-sdl \
             duckstationsa"
  CLEAN_UI="emulationstation"
  CLEAN_TOOLS="gamecontrollerdb moonlight"

fi

# Clean necessary packages.
PKG_CLEAN="${CLEAN_OS} ${CLEAN_EMUS} ${CLEAN_UI} ${CLEAN_TOOLS} ${PKG_CLEAN} lib32 initramfs modules autostart splash jelos"

if [ ! -n "${DIRTY}" ]
then
  if [ -d "build.${DISTRO}-${DEVICE_ROOT}.${ARCH}/initramfs" ]
  then
    rm -rf build.${DISTRO}-${DEVICE_ROOT}.${ARCH}/initramfs
  fi

  # Clean a few packages to ensure the build date and version are updated
  for package in ${PKG_CLEAN}
  do
    echo "Clean: ${package}"
    ./scripts/clean ${package}
  done
fi

# Clean out old builds before starting the new one.
echo "Prune old releases: ${DISTRO}-${DEVICE}.${ARCH}-*"
rm -f ./release/${DISTRO}-${DEVICE}.${ARCH}-*

# Remove the image root as it should be regenerated for every build.
rm -rf ./build.${DISTRO}-${DEVICE}.${ARCH}/image

case ${ARCH} in
  arm)
    [ "${BASE_ONLY}" == "true" ] && exit 0
    export PKG_BUILD_PERF=no
    scripts/build_compat arm
    scripts/install arm
  ;;
  i686)
    [ "${BASE_ONLY}" == "true" ] && exit 0
    export PKG_BUILD_PERF=no
    scripts/build_compat x86
    scripts/install x86
  ;;
  *)
    make image
esac

if [ ! $? == 0 ]
then
  echo "Build failed..exiting."
  exit 1
fi