#!/bin/bash
# Usage ./build-yunohost [ARCH [DIST [DEB_DIST]]]
# ARCH amd64|i386
# DIST stable|testing
# DEB_DIST jessie|stretch

readonly DEFAULT_DEB_DIST="jessie"
readonly REPO_URL="http://repo.yunohost.org/debian/"

readonly ARCH_CHOICE=$1
readonly DIST="${2:-stable}"
readonly DEB_DIST="${3:-$DEFAULT_DEB_DIST}"

source ./common.sh

# Build Yunohost iso for amd64 or i386 arch
# Usage: build ARCH
function build
{
    local ARCH="$1"

    info "Starting build for arch $ARCH ..."

    if [ "$DIST" = "testing" ] ; then
        sed -i "s#$REPO_URL jessie stable#$REPO_URL $DEB_DIST stable testing#" profiles/*.preseed
        sed -i "s#$REPO_URL stretch stable#$REPO_URL $DEB_DIST stable testing#" profiles/*.preseed
    else
        sed -i "s#$REPO_URL jessie stable testing#$REPO_URL $DEB_DIST stable#" profiles/*.preseed
        sed -i "s#$REPO_URL stretch stable testing#$REPO_URL $DEB_DIST stable#" profiles/*.preseed
    fi

    # Build a simple/regular debian CD image ?
    build-simple-cdd --dist $DEB_DIST --conf ./simple-cdd-$ARCH.conf

    # Find the release version of debian
    local DEBNUM="$(grep "Version:" tmp/${DEB_DIST}_Release | awk '{print $2;}')"

    # Find the release version of YunoHost
    info "Finding out current YunoHost's stable vesion number"
    wget -q ${REPO_URL}dists/${DEB_DIST}/${DIST}/binary-i386/Packages.gz
    gunzip Packages.gz
    YNH_VERSION=$(grep "^Package: yunohost$" --after-context=1 Packages | grep "Version" | awk '{print $2;}')
    rm -f Packages

    local CD_STUFF="images/debian-$DEBNUM-$ARCH-CD"

    # build-simple-cdd is stupid and doesn't name its output correctly -.- ...
    mv images/debian-*-$ARCH-CD-1.iso $CD_STUFF.iso
    mv images/debian-*-$ARCH-CD-1.list.gz $CD_STUFF.list.gz

    local OUTPUT="images/yunohost-$DEB_DIST-$YNH_VERSION-$ARCH-$DIST.iso"

    [ -e "$CD_STUFF.iso" ] \
        || critical "Expected to find $CD_STUFF.iso but it's not here ?"

    rm -f $OUTPUT

    $(pwd)/add-firmware-to $CD_STUFF.iso $OUTPUT $DEB_DIST

    rm -f $CD_STUFF.iso
    rm -f $CD_STUFF.list.gz

    [ -e $OUTPUT ] \
        && success "The image should now be available in $OUTPUT" \
        || critical "Something wrong happened when build the image :|"
}

# Sign the new iso
# Usage: sign ARCH
function sign
{
    local ARCH="$1"
    local NAME="images/yunohost-$DEB_DIST-$YNH_VERSION-$ARCH-$DIST.iso"
    
    info "Signing image $NAME ..."
    
    gpg --output $NAME.sig --detach-sig $NAME

    sha256sum $NAME > $NAME.sum
}

function build_and_sign
{
    local ARCH="$1"

    rm -rf $(pwd)/tmp
    rm -rf $(pwd)/images/debian*
    build $ARCH
    sign $ARCH
}

function main
{
    if [ -z "$ARCH_CHOICE" ]
    then
        info "No arch chosen, will build both i396 and amd64"
        build_and_sign i386
        build_and_sign amd64
    else
        build_and_sign $ARCH_CHOICE
    fi
}

main