#!/bin/sh

cat /hostetc/issue | grep -q Moby || ( printf "You must run this script with -v /etc:/hostetc -v /lib:/lib\n" && exit 1 )

apk info | grep -q fuse || ( printf "You must run this script with -v /etc:/etc -v /lib:/lib\n" && exit 1 )

[ -f /hostetc/kernel-source-info ] || ( printf "Missing kernel source version info\n" && exit 1 )

. /hostetc/kernel-source-info

rm -rf /output/*

mkdir -p /output/kernel
cd /output/kernel
cp /proc/config.gz .
wget ${KERNEL_SOURCE=} || ( printf "Failed to download kernel source\n" && exit 1 )

git clone -b "$AUFS_BRANCH" "$AUFS_REPO" /output/kernel/aufs
cd /output/kernel/aufs
git checkout -q "$AUFS_COMMIT"
# to make it easier to check in the output of this script if necessary
rm -rf .git

git clone ${AUFS_TOOLS_REPO} /output/aufs-util
cd /output/aufs-util
git checkout "$AUFS_TOOLS_COMMIT"
rm -rf .git

cd /aports
git pull

packages.lua | while read l
do
  echo $l
  APORT_PACKAGE=$(echo $l | sed 's/ .*//')
  APORT_COMMIT=$(echo $l | sed 's/^.* //')
  APORT_ORIGIN=$(apk search --origin -x -q ${APORT_PACKAGE})
  (
    cd /aports
    [ ! -d main/${APORT_ORIGIN} ] && ( printf "Cannot find package ${APORT_ORIGIN} in aports\n" && exit 1 )
    git checkout ${APORT_COMMIT} || ( printf "Cannot find commit ${APORT_COMMIT} for ${APORT_ORIGIN} in aports\n" && exit 1 )
    export srcdir=/output
    cd main/${APORT_ORIGIN}
    . ./APKBUILD
    if [ ! -d "$srcdir"/$pkgname-$pkgver ]
    then
      mkdir -p "$srcdir"/$pkgname-$pkgver
      for f in $source
      do
        if [ -f $f ]
        then
          cp -a $f "$srcdir"/$pkgname-$pkgver/
        else
          cd "$srcdir"/$pkgname-$pkgver && \
          wget $f || ( printf "Cannot retrieve $f\n" && exit ) && \
          cd -
        fi
      done
    fi
  )
done