#!/bin/bash

#-- this is necessary for running 'apt-ftparchive' in a hook script if required
EXTRAPACKAGES="$EXTRAPACKAGES apt-utils"

#-- get desired distribution and architecture
if [ "$DIST" = "" ]; then
	DIST=$(lsb_release -cs)
fi
DISTRIBUTION=$DIST
if [ "$ARCH" = "" ]; then
  ARCH=$(dpkg --print-architecture)
fi
ARCHITECTURE=$ARCH

if [ -n "$T" ]; then
  if [ "${T##*-}" = "vm" ]; then
    BUILD_VM="qemu"
    T=${T%-vm}
  fi
  if [ "${T#*@}" = "$T" ]; then
    DISTRIBUTION=${T%-*}
    ARCHITECTURE=${T##*-}
  else
    DISTRIBUTION=${T%@*}
    ARCHITECTURE=${T##*@}
  fi
  if [ "${DISTRIBUTION##*-}" = "backports" ]; then
    BACKPORTS="yes"
    DISTRIBUTION=${DISTRIBUTION%-backports}
  fi
fi

BASETGZ="/var/cache/pbuilder/base-$DIST@$ARCH.tgz"

#-- select apt components
case "$DISTRIBUTION" in
    sid|buster|stretch|jessie|wheezy|squeeze|lenny|etch|sarge)
        COMPONENTS="main contrib non-free"
        ;;

    ceres|beowulf|ascii)
        COMPONENTS="main"
        DEBOOTSTRAPOPTS=(--variant=buildd --no-check-gpg)
        EXTRAPACKAGES="$EXTRAPACKAGES devuan-keyring"
        ;;

    bionic|artful|zesty|yakkety|xenial|wily|vivid|utopic|trusty|saucy|raring|quantal|precise|oneiric|natty|maverick|lucid)
        COMPONENTS="main restricted universe multiverse"
        DEBOOTSTRAPOPTS=(--variant=buildd)
        ;;

    raspbian-jessie|raspbian-wheezy)
        COMPONENTS="main contrib non-free"
        DEBOOTSTRAPOPTS=(--variant=buildd --no-check-gpg)
        ;;
esac
EXTRAPACKAGES="$EXTRAPACKAGES fakeroot apt-transport-https ca-certificates"

#-- select base apt sources
case "$DISTRIBUTION" in
    sid|buster|stretch|jessie|wheezy)
        MIRRORSITE=http://deb.debian.org/debian
        ;;

    squeeze|lenny|etch|sarge)
        MIRRORSITE=http://archive.debian.org/debian
        OTHERMIRROR="#deb http://archive.debian.org/backports.org $DISTRIBUTION-backports main contrib non-free"
        ;;

    ceres|beowulf|ascii)
        MIRRORSITE=http://auto.mirror.devuan.org/merged
        ;;

    bionic|artful|zesty|yakkety|wily|vivid|trusty|precise)
        if [ "$ARCHITECTURE" = "amd64" ] || [ "$ARCHITECTURE" = "i386" ]; then
            MIRRORSITE=http://archive.ubuntu.com/ubuntu
        else
            MIRRORSITE=http://ports.ubuntu.com
        fi
        ;;

    xenial)
        if [ "$ARCHITECTURE" = "amd64" ] || [ "$ARCHITECTURE" = "i386" ]; then
            MIRRORSITE=http://archive.ubuntu.com/ubuntu
        else
            MIRRORSITE=http://ports.ubuntu.com
        fi
        OTHERMIRROR="deb $MIRRORSITE $DISTRIBUTION-updates $COMPONENTS"
        ;;

    utopic|saucy|raring|quantal|oneiric|natty|maverick|lucid)
        MIRRORSITE=http://old-releases.ubuntu.com/ubuntu
        ;;

    raspbian-jessie|raspbian-wheezy)
        MIRRORSITE=http://ftp.fi.muni.cz/pub/linux/raspbian/raspbian
        ;;
esac

if [ -n "${ARCH}" ]; then
    NAME="$NAME-$ARCH"
    DEBOOTSTRAPOPTS=("--arch" "$ARCH" "${DEBOOTSTRAPOPTS[@]}")
fi

BUILDRESULT="/var/cache/pbuilder/$DISTRIBUTION/result/"

APTCACHE="/var/cache/pbuilder/aptcache/$DISTRIBUTION/"
if [ -n "$APTCACHE" ] && [ ! -d "$APTCACHE" ]; then
  mkdir $APTCACHE
fi
if [ -z "$(stat -L --print "%d\n" $APTCACHE/. /var/cache/pbuilder/build/. | uniq -d)" ]; then
  # apt cache for build on tmpfs is managed by hook scripts
  BINDMOUNTS="${BINDMOUNTS} ${APTCACHE}"
  APTCACHEHARDLINK=no
  APTCACHE=""
fi

BUILDPLACE="/var/cache/pbuilder/build/"

# default PKGNAME_LOGFILE
PKGNAME_LOGFILE="__build__.log"

#-- extra options
DEBBUILDOPTS="-B"
if [ "$ARCHITECTURE" == "amd64" ]; then
  DEBBUILDOPTS="-b"
fi
if [ "${DISTRIBUTION#raspbian}" != "$DISTRIBUTION" ] && [ "$ARCHITECTURE" == "armhf" ]; then
  DEBBUILDOPTS="-b"
  DISTRIBUTION=${DISTRIBUTION#raspbian-}
fi
if [ -z "$DEB_SIGN_KEYID" ]; then
  AUTO_DEBSIGN=${AUTO_DEBSIGN:-no}
fi

#-- choose dependency solver
#-- apt is better if target distribution contains apt >= 1.4~beta3
#-- aptitude is better if target distribution contains apt < 1.4~beta3
case "$DISTRIBUTION" in
  sid|buster|stretch|\
  ceres|beowulf|ascii|\
  bionic|artful|zesty)
    PBUILDERSATISFYDEPENDSCMD="/usr/lib/pbuilder/pbuilder-satisfydepends-apt"
    ;;

  jessie|wheezy|squeeze|lenny|etch|sarge|\
  raspbian-jessie|raspbian-wheezy|\
  yakkety|xenial|wily|vivid|utopic|trusty|saucy|raring|quantal|precise|oneiric|natty|maverick|lucid)
    PBUILDERSATISFYDEPENDSCMD="/usr/lib/pbuilder/pbuilder-satisfydepends-aptitude"
    ;;
esac