#!/bin/bash

RSS="https://sourceforge.net/export/rss2_projnews.php?group_id=48857&rss_fulltext=1"
WORK="/home/matthew/projects/stellarium_gubbins/web_backup/stellarium.org"

main () {
        # running from cron, so must set the working directly explicitly
        cd "$WORK"

        case "$1" in
        check)
                get_and_patch test.xml
                check test.xml news.xml
                ;;
        *)
                get_and_patch news.xml
                upload news.xml
                ;;
        esac
}

get_and_patch () {
        GET "$RSS" > "$1"
        # patch the news feed where it got truncated
        perl -i -npe 's|(win32 package can be found here:)|$1 <a href="http://porpoisehead.net/41">http://porpoisehead.net/41</a>|;' "$1"
}

check () {
        grep -v "RSS generated by SourceForge.net at" "$1" > "$1.test"
        grep -v "RSS generated by SourceForge.net at" "$2" > "$2.test"

        # and output gets mailed to the calling user by crond
        cmp -s "$1.test" "$2.test" || echo "new stellarium news found, run the update."
        rm -f "$1.test" "$2.test"
}

upload () {
        # stellarium_web is configured in my ~/.ssh/config with the proper username and key id
        scp "$1" stellarium_web:/home/groups/s/st/stellarium/htdocs/news.xml && echo "done"
}

main "$@"