#!/bin/bash
#  $HeadURL$ $LastChangedRevision$

#  Modules
. $(bs-config bs_share_prefix)/include/bssupport.sh || { echo "${0##*/}: INTERNAL ERROR: failed to load bssupport.sh" >&2; exit 3; }
. $(miniade) || { echo "${0##*/}: ERROR: miniade failed (hint: run 'miniade' to see error)" >&2; exit 1; }

#  Configurable stuff

#  Other globals

main()
{
    local MY_ARGS
    local PROGRAM VERBOSELEVEL PROGNAME

    #  Defaults for options

    #  Process options
    miniade_process_options --help-handler=usage MY_ARGS "$@" && set -- "${MY_ARGS[@]}"

    #  Process arguments

    #  Sanity checks and derivations
    #  bs sets PROGRAM, but passes it to us through environment as BS_PROGRAM, copy it back.
    PROGRAM=$BS_PROGRAM   
    VERBOSELEVEL=$BS_VERBOSELEVEL   
    PKGCTRL_SVNWC_DIR=$BS_PKGCTRL_SVNWC_DIR   
    bssupport_checkset VERBOSELEVEL PROGRAM PKGCTRL_SVNWC_DIR
    #  DEBEMAIL and DEBFULLNAME must be set in the developer's environment. They
    #  are not bs-specific: they are used by dch and other deb-related commands.
    bssupport_checkset DEBEMAIL DEBFULLNAME 
    miniade_get_progname PROGNAME
    miniade_set_verboselevel $VERBOSELEVEL
    bssupport_changestate --id=$PROGRAM.debian --from=released --to=unreleased --step=$PROGNAME
    bssupport_sandbox
    
    #  Guts
    miniade_info "bumping changelog ..."
    ln -s $PKGCTRL_SVNWC_DIR debian
    bssupport_get_released_pkgctrl_version debian/changelog CHANGELOG_VERSION
    miniade_debug 10 "CHANGELOG_VERSION=$CHANGELOG_VERSION"
    get_latest_version_on_web TARBALL_VERSION || miniade_error "uscan output is not parsable (hint: see messages above)"
    miniade_debug 10 "VERSION=$VERSION"
    if [ "X$CHANGELOG_VERSION" = "X$TARBALL_VERSION" ]; then
        DCH_OPTS="--increment \"please change this text!\""
        miniade_warning "don't forget to update the changelog (it's got dummy text in)"
    elif dpkg --compare-versions $CHANGELOG_VERSION lt $TARBALL_VERSION; then
        DCH_OPTS="--newversion=$TARBALL_VERSION-1 \"new upstream version ($TARBALL_VERSION)\""
    else
        miniade_error "changelog references a version that is not available (hint: see messages above)"
    fi
    eval "dch --changelog=debian/changelog --distribution=UNRELEASED $DCH_OPTS" || miniade_error "dch failed (hint: see messages above)"
}

#  uscan has a '--no-symlink' option which makes it not call mk_origtargz, but
#  even when explicitly instructed not to call mk_origtargz, uscan still warns:
#
#      uscan warn: No upstream tarball downloaded.  No further processing with mk_origtargz ...
#  
#  Hence not bothering to provide the option and redirecting stderr.
get_latest_version_on_web()
{
    local USCAN_OUTPUT VERSION_REF
    VERSION_REF=$1

    USCAN_OUTPUT=$(uscan --no-download --destdir . --verbose)
    [[ $USCAN_OUTPUT =~ Newest\ version\ of\ .*\ on\ remote\ site\ is\ (.*),\ local\ version\ is ]] || miniade_error "couldn't parse uscan output (hint: see messages above)"
    eval "$VERSION_REF=\"\${BASH_REMATCH[1]}\""
}
    
main "$@"