#!/bin/bash

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2016 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2018-present Team LibreELEC (https://libreelec.tv)

. config/options "$1"

if [ -z "$1" ]; then
  die "usage: $0 package_name"
fi

if [ -z "${PKG_NAME}" ]; then
  die "$(print_color CLR_ERROR "${1}: no package.mk file found")"
fi

$SCRIPTS/get $1

STAMP="$PKG_BUILD/.libreelec-unpack"

mkdir -p $BUILD

# Perform a wildcard match on the package to ensure old versions are cleaned too
PKG_DEEPHASH=
for i in $BUILD/$1-*; do
  if [ -d $i -a -f "$i/.libreelec-unpack" ] ; then
    . "$i/.libreelec-unpack"
    if [ "$STAMP_PKG_NAME" = "$1" ]; then
      [ -z "${PKG_DEEPHASH}" ] && PKG_DEEPHASH=$(calculate_stamp)
      if [ ! "$PKG_DEEPHASH" = "$STAMP_PKG_DEEPHASH" ] ; then
        $SCRIPTS/clean $1
      fi
    fi
  fi
done

if [ -d "$PKG_BUILD" -a ! -f "$STAMP" ]; then
  # stale pkg build dir
  $SCRIPTS/clean $1
fi

[ -f "$STAMP" ] && exit 0

if [ -d "$SOURCES/$1" -o -d "$PKG_DIR/sources" ]; then
  build_msg "CLR_UNPACK" "UNPACK" "${1}" "indent"

  pkg_call_exists pre_unpack && pkg_call pre_unpack

  if pkg_call_exists unpack; then
    pkg_call unpack
  else
    if [ -n "$PKG_URL" ]; then
      $SCRIPTS/extract $1 $BUILD
    fi
  fi

  if [ ! -d "$PKG_BUILD" ]; then
    if [ -n "$PKG_SOURCE_DIR" ]; then
      mv $BUILD/$PKG_SOURCE_DIR "$PKG_BUILD"
    elif [ -d "$PKG_BUILD"* ]; then
      mv "$PKG_BUILD"* "$PKG_BUILD"
    fi
  fi

  if [ -d "$PKG_DIR/sources" ]; then
    [ ! -d "$PKG_BUILD" ] && mkdir -p "$PKG_BUILD"
    cp -PRf "$PKG_DIR/sources/"* "$PKG_BUILD"
  fi

  if [ -z "$PKG_URL" ]; then
    mkdir -p "${PKG_BUILD}"
  fi

  pkg_call_exists post_unpack && pkg_call post_unpack

  if [ "${PKG_SKIP_PATCHES}" != "yes" ]; then
    pkg_call_exists pre_patch && pkg_call pre_patch

    if [ "$TARGET_ARCH" = "x86_64" ]; then
      PATCH_ARCH="x86"
    else
      PATCH_ARCH="${TARGET_PATCH_ARCH:-$TARGET_ARCH}"
    fi

    PATCH_DIRS_PKG=""
    PATCH_DIRS_PRJ=""
    if [ -n "$PKG_PATCH_DIRS" ]; then
      for patch_dir in $PKG_PATCH_DIRS; do
        [ -d $PKG_DIR/patches/$patch_dir ] && PATCH_DIRS_PKG="$PATCH_DIRS_PKG $PKG_DIR/patches/$patch_dir/*.patch"
        [ -d $PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$patch_dir ] && PATCH_DIRS_PRJ="$PATCH_DIRS_PRJ $PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$patch_dir/*.patch"
        [ -d $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME/$patch_dir ] && PATCH_DIRS_PRJ="$PATCH_DIRS_PRJ $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME/$patch_dir/*.patch"
      done
    fi

    for i in $PKG_DIR/patches/*.patch \
             $PKG_DIR/patches/$PATCH_ARCH/*.patch \
             $PATCH_DIRS_PKG \
             $PKG_DIR/patches/$PKG_VERSION/*.patch \
             $PKG_DIR/patches/$PKG_VERSION/$PATCH_ARCH/*.patch \
             $PROJECT_DIR/$PROJECT/patches/$PKG_NAME/*.patch \
             $PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$PATCH_ARCH/*.patch \
             $PATCH_DIRS_PRJ \
             $PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$PKG_VERSION/*.patch \
             $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME/*.patch; do

      thisdir="$(dirname "$i")"

      if [ "$thisdir" = "$PKG_DIR/patches" ]; then
        PATCH_DESC="(common)"
      elif [ "$thisdir" = "$PKG_DIR/patches/$PATCH_ARCH" ]; then
        PATCH_DESC="(common - $PATCH_ARCH)"
      elif [ "$thisdir" = "$PKG_DIR/patches/$PKG_VERSION" ]; then
        PATCH_DESC="(common - $PKG_VERSION)"
      elif [ "$thisdir" = "$PKG_DIR/patches/$PKG_VERSION/$PATCH_ARCH" ]; then
        PATCH_DESC="($PKG_VERSION - $PATCH_ARCH)"
      elif [ "$thisdir" = "$PROJECT_DIR/$PROJECT/patches/$PKG_NAME" ]; then
        PATCH_DESC="(project)"
      elif [ "$thisdir" = "$PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$PATCH_ARCH" ]; then
        PATCH_DESC="(project - $PATCH_ARCH)"
      elif [ "$thisdir" = "$PROJECT_DIR/$PROJECT/patches/$PKG_NAME/$PKG_VERSION" ]; then
        PATCH_DESC="(project - $PKG_VERSION)"
      elif [ "$thisdir" = "$PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME" ]; then
        PATCH_DESC="(device)"
      else
        if [[ "$thisdir" =~ ^$PKG_DIR/.* ]]; then
          PATCH_DESC="(common - $(basename "$thisdir"))"
        elif [[ "$thisdir" =~ ^$PROJECT_DIR/.*/devices/.* ]]; then
          PATCH_DESC="(device - $(basename "$thisdir"))"
        elif [[ "$thisdir" =~ ^$PROJECT_DIR/.* ]]; then
          PATCH_DESC="(project - $(basename "$thisdir"))"
        else
          PATCH_DESC="(unknown - $(basename "$thisdir"))"
        fi
      fi

      if [ -f "$i" ]; then
        build_msg "CLR_APPLY_PATCH" "APPLY PATCH $(print_color "CLR_PATCH_DESC" "${PATCH_DESC}")" "${i#${ROOT}/}"
        if grep -qE '^GIT binary patch$|^rename from|^rename to' $i; then
          cat $i | git apply --directory=$(echo "$PKG_BUILD" | cut -f1 -d\ ) -p1 --verbose --whitespace=nowarn --unsafe-paths >&$VERBOSE_OUT
        else
          cat $i | patch -d $(echo "$PKG_BUILD" | cut -f1 -d\ ) -p1 >&$VERBOSE_OUT
        fi
      fi
    done

    pkg_call_exists post_patch && pkg_call post_patch
  fi

  if [ ! "$PKG_NAME" = "configtools" ] ; then
    for config in $(find "$PKG_BUILD" -name config.guess | sed 's/config.guess//'); do
      build_msg "CLR_FIXCONFIG" "FIXCONFIG" "${config}"

      [ -f "$config/config.guess" -a -f $TOOLCHAIN/configtools/config.guess ] && \
        cp -f $TOOLCHAIN/configtools/config.guess $config
      [ -f "$config/config.sub" -a -f $TOOLCHAIN/configtools/config.sub ] && \
        cp -f $TOOLCHAIN/configtools/config.sub $config
    done
  fi
fi

if [ "$PKG_SECTION" != "virtual" ]; then
  mkdir -p "$PKG_BUILD"

  rm -f $STAMPS/$1/build_*

  PKG_DEEPHASH=$(calculate_stamp)
  for i in PKG_NAME PKG_DEEPHASH; do
    echo "STAMP_$i=\"${!i}\"" >> $STAMP
  done
fi