raspscreen/manage.sh

#!/bin/bash
#
# Utility to manage the userland program called RaspScreen by Systemec B.V.
#
# Where it should live: /opt/raspscreen/bin/manage.sh
#
# Examples:
# ./manage.sh (restart|stop|start) (presentation|video)
#
# systemctl must be reachable from the path of the executing user.

app_name="raspscreen"

runtime_id=$(id -u)
if [[ "$runtime_id" -eq 0 ]]; then
    echo "Do not run as root. Run as the graphical user."
    exit 1
fi

printf "Checking input..."
case "$1" in
    restart|stop|start)
        printf "Valid command...";;
    *)
        echo "Invalid command!"
        exit 1;;
esac

case "$2" in
    presentation|video)
        echo "Valid service...";;
    *)
        echo "Invalid service!"
        exit 1;;
esac

case "$3" in
    --foreground)
        echo "Gathering uptime data..."
        sys_uptime=$(cat /proc/uptime | awk '{print int($1)}')

        if [[ "$sys_uptime" -lt 60 ]]; then
            echo "Detected a recent restart - giving the operating system some time..."
            sleep 10s
        fi

        if [[ "$2" == "presentation" ]]; then
            media_file=$(find /opt/raspscreen/media \( -name "*.pptx" -o -name "*.odp" \))

            if [[ -z "$media_file" ]]; then
                echo "No compatible media file found. Wrong mode?"
                echo "Exiting in 20 seconds..."
                sleep 20s
                exit 1
            else
                /usr/bin/libreoffice --impress --show --norestore "$media_file"
            fi
        elif [[ "$2" == "video" ]]; then
            media_file=$(find /opt/raspscreen/media \( -name "*.mp4" -o -name "*.mkv" -o -name "*.mov" -o -name "*.webm" \))

            if [[ -z "$media_file" ]]; then
                echo "No compatible media file found. Wrong mode?"
                echo "Exiting in 20 seconds..."
                sleep 20s
                exit 1
            else
                /usr/bin/vlc --fullscreen --loop --no-video-title --video-on-top --no-qt-fs-controller --qt-continue=0 "$media_file"
            fi
        fi
        echo "Process exited..."
        exit 0
        ;;
    *)
        echo "Running in task mode...";;
esac

echo "Executing task..."
cmd_result=$(systemctl --user "$1" "$2" 2>&1)
cmd_exit=$?

if [[ "$cmd_exit" -eq 0 ]]; then
    echo "Succesfully exited, see:"
    if [[ -n "$cmd_result" ]]; then
        echo "    -> $cmd_result"
    fi
else
    echo "Something went wrong, see..."
    echo "    -> $cmd_result"
fi
exit 0