#!/bin/bash
if [ "$LOGNAME" != "root" ]
then
    echo "LosslessCut updater needs to be run as root!"
    exit
fi

#get latest LosslessCut version number
latest_web=$(curl https://api.github.com/repos/mifi/lossless-cut/releases/latest -s|sed -n 's/"tag_name": "v\([0-9]\.[0-9]*\.[0-9]*\)",/\1/p'| sed -e 's/^[[:space:]]*//')
#convert version numbers to integers for comparison
web=$(echo "$latest_web"  | sed 's/\.//g')

if [ -f /opt/losslesscut/version.txt ];
then 
    current_ver=$(cat /opt/losslesscut/version.txt)
    #convert version numbers to integers for comparison
    cur=$(echo "$current_ver" | sed 's/\.//g')
fi

if [[ "$cur" == "" ]];
then
    cur=0
fi

#download and install only if web version greater than current version
#if main web version doesn't exist, then install new main version
if [[ ${web:0:8} -gt ${cur:0:8} ]];
then
    echo "Current LosslessCut version $current_ver, upgrading to version $latest_web"
    if [ ! -d /opt/losslesscut ];
    then 
        mkdir /opt/losslesscut
    fi
    cd /opt/losslesscut
    if [ -f LosslessCut-linux-x86_64.AppImage ];
    then 
        mv LosslessCut-linux-x86_64.AppImage LosslessCut-linux-x86_64.AppImage.old
    fi
    wget "https://github.com/mifi/lossless-cut/releases/download/v$latest_web/LosslessCut-linux-x86_64.AppImage"
    chmod 755 /opt/losslesscut/LosslessCut-linux-x86_64.AppImage
    echo "$latest_web" > /opt/losslesscut/version.txt

    if [ ! -f /usr/share/applications/losslesscut.desktop ];
    then
        wget https://github.com/mifi/lossless-cut/raw/master/src/icon.svg
        cat >> /usr/share/applications/losslesscut.desktop <<EOD
[Desktop Entry]
Name=LossLessCut
Exec=/opt/losslesscut/LosslessCut-linux-x86_64.AppImage
Comment= The swiss army knife of lossless video/audio editing
Terminal=false
Icon=/opt/losslesscut/icon.svg
Type=Application
Categories=Graphics;
Hidden=false
NoDisplay=false
EOD
        update-desktop-database
        xdg-desktop-menu forceupdate
        xdg-desktop-menu install --novendor /usr/share/applications/losslesscut.desktop

else
    echo "Current Version $current_ver, available version $latest_web"
    echo "No upgrade necessary"
fi