DESCRIPTION = "Provides default system config files and /var/config fs"
SECTION = "base"
LICENSE = "MIT"
RDEPENDS_${PN} += "bash"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
PACKAGE_ARCH = "all"
PR = "r10"
PACKAGES =+ "${PN}-mths ${PN}-wifi-bt-ap"
inherit update-rc.d
inherit allarch

INITSCRIPT_NAME = "config"
INITSCRIPT_PARAMS = "start 31 S ."

FILESEXTRAPATHS_prepend := "${THISDIR}/config:"
FILESEXTRAPATHS_prepend_${PN} := "${THISDIR}/mths_config:"

SRC_URI = "\
  file://network \
  file://ppp \
  file://config.init \
  file://config-mths \
  file://config-wifi-bt-ap \
  file://chat_wrapper \
  file://chat_wrapper.default \
  file://99_radio \
"

RDEPENDS_${PN}-mths += "${PN}"
RDEPENDS_${PN}-wifi-bt-ap += " bluez5 bluez5-pand hostapd-cfg dnsmasq rs9113-noarch "

CONFFILES_${PN} += "${sysconfdir}/defaults.tar.gz"
CONFIGFILES = "network/interfaces ppp"

CONFIGFILES_MTHS = "config-mths"

fakeroot do_install () {
    cd ${WORKDIR}

    # default config files
    rm -f defaults.tar.gz
    chown root:root -R ${CONFIGFILES}
    tar czf defaults.tar.gz ${CONFIGFILES}
    install -d ${D}${sysconfdir}
    install -m 0644 ${WORKDIR}/defaults.tar.gz ${D}${sysconfdir}/defaults.tar.gz

    # save root password for resetting to defaults
    echo -n '${ROOT_PASSWORD_HASH}' > ${D}${sysconfdir}/default_pass
    chmod 400 ${D}${sysconfdir}/default_pass

    # init script
    install -d ${D}${sysconfdir}/init.d
    install -m 0755 ${WORKDIR}/config.init ${D}${sysconfdir}/init.d/config

    # mths adjustments
    tar -C ${CONFIGFILES_MTHS} -czf defaults-mths.tar.gz .
    install -m 0644 ${WORKDIR}/defaults-mths.tar.gz ${D}${sysconfdir}/defaults-mths.tar.gz

    install -d ${D}${sysconfdir}/default
    install -d ${D}${sysconfdir}/default/volatiles
    install -d ${D}${libexecdir}/ppp
    install -m 0755 ${WORKDIR}/chat_wrapper ${D}${libexecdir}/ppp/
    install -m 0644 ${WORKDIR}/chat_wrapper.default ${D}${sysconfdir}/default/chat_wrapper
    install -m 0644 ${WORKDIR}/99_radio ${D}${sysconfdir}/default/volatiles

    install -d ${D}/usr/share
    cp -a ${WORKDIR}/config-wifi-bt-ap/* ${D}/
    # README does not usually go on an embedded device.
    rm ${D}/README
    echo 'List out files'
    find ${D}/usr/share/config-wifi-bt-ap -type f
    find ${D}/usr/share/config-wifi-bt-ap -type f | xargs chmod 0644
    find ${D}/usr/share/config-wifi-bt-ap | xargs chown root:root
    find ${D}/usr/share -type d | xargs chmod 0755
}

FILES_${PN} = "${sysconfdir}/defaults.tar.gz ${sysconfdir}/default_pass"
FILES_${PN} += "${sysconfdir}/init.d/config ${sysconfdir}/default ${libexecdir}/ppp/chat_wrapper"
FILES_${PN} += "${sysconfdir}/default/volatiles"

FILES_${PN}-mths = "${sysconfdir}/defaults-mths.tar.gz"
FILES_${PN}-wifi-bt-ap = "/usr/share/config-wifi-bt-ap"

# Create the hotspot version of defaults.tar.gz
pkg_postinst_${PN}-mths() {
  X=$D/tmp/mths
  mkdir -p $X
  export X
  (
    
    set -x
    if tar -tf $D${sysconfdir}/defaults.tar.gz | grep dnsmasq ; then
        :
    else
        tb=$X/tarball # Tarball directory
        mkdir $tb
        tar -C $tb -xf $D/etc/defaults.tar.gz
        tar -C $tb -xf $D/etc/defaults-mths.tar.gz
        if ! grep '^auto wifi1' $tb/network/interfaces ; then
            cat $tb/network/interfaces $tb/network/interfaces.mths >$tb/network/interfaces.new
            mv $tb/network/interfaces $tb/network/interfaces.old
            mv $tb/network/interfaces.new $tb/network/interfaces
        fi
        tar -C $tb -cf $D/etc/defaults.tar.gz .
    fi
  ) >$X/postinsttrace.txt 2>&1
  # Comment out the final line for a trace.
  rm -rf $X
}


pkg_postinst_${PN}-wifi-bt-ap() {
    US="$D/usr/share/config-wifi-bt-ap"
    ND="$D/etc/network"
    mkdir ${US}/old
    cd /var/config
    # Make a backup
    tar -T ${US}/backup.list.txt -cf $D/var/config/var-config-wifi-bt-ap-bkup.tar.gz
    # Add new interfaces
    if ! grep "^auto wifi1$" ${ND}/interfaces ; then
        echo >>${ND}/interfaces
        cat $US/wifi1.append >>${ND}/interfaces
    fi
    if ! grep "^auto pan0$" ${ND}/interfaces ; then
        echo >>${ND}/interfaces
        cat $US/pan0.append >>${ND}/interfaces
    fi

    # Copy other files into place
    cp -a ${US}/var/config /var

    # Record files we created
    md5sum $(cat ${US}/backup.list.txt) >$D/var/config/bkup-wifi-bt-ap.md5

    # Restart daemons
    /etc/init.d/dnsmasq stop
    /etc/init.d/bt-pan stop
    /etc/init.d/bluetooth stop
    /etc/init.d/hostapd stop
    /etc/init.d/rs9113 stop
    /etc/init.d/rs9113 start
    /etc/init.d/bluetooth start
    /etc/init.d/hostapd start
    /etc/init.d/bt-pan start
    /etc/init.d/dnsmasq start
}

pkg_prerm_${PN}-wifi-bt-ap() {
    cd /var/config
    if md5sum -c $D/var/config/bkup-wifi-bt-ap.md5 ; then
        if [ -f $D/var/config/var-config-wifi-bt-ap-bkup.tar.gz ] ; then
           tar -xf $D/var/config/var-config-wifi-bt-ap-bkup.tar.gz
        else
           echo Cannot restore anything because backup is missing
        fi
    else
        echo 'Cannot restore old configuration, because it has changed since the backup'
    fi
}