#!/bin/bash
####################################
#
#   MojoHost
#   Script ffmpeg-switcher.sh
#
#
#   ffmpeg version swticher
#
#    allows for changing the symlink between ffmpeg static compile versions
#
#######################################
#  changelog
#  Greg Martin Jan 29 2013   -- initial release
#########################################


function  ffSym () {

        # Set the prompt for the select command
        PS3="Type a number or 'q' to quit: "

        if [  -h /usr/local/bin/ffmpeg ]
        then
                echo "you are currently using `readlink /usr/local/bin/ffmpeg`"
        else
                echo "ffmpeg is currently not linked to any version"
        fi
        echo ""
        echo "To select or change ffmpeg versions please select from the menu below"
        # Create a list of files to display
        fileList=$( ls -1 /usr/local/bin/ffmpeg.* )

        # Show a menu and ask for input. If the user entered a valid choice,
        # then invoke the editor on that file
        select fileName in $fileList; do
            if [ -n "$fileName" ]; then
                 echo "you have selected "${fileName}
                 if [  -h /usr/local/bin/ffmpeg ]
                 then
                         unlink /usr/local/bin/ffmpeg
                 fi
                 ln -s ${fileName} /usr/local/bin/ffmpeg
            fi
            break
        done

}



#ffmpeg exists
if [ -a /usr/local/bin/ffmpeg ]
then
        #ffmpeg exists and is a symlink
        if [ -h /usr/local/bin/ffmpeg ]
        then
                ##there are other symlinks available
                if [ $( ls -1 /usr/local/bin/ffmpeg.*|wc -l  ) -gt 1 ]
                then
                        ffSym
                else
                        echo "ffmpeg exists and is a symlink,,  but there are no other options available"
                        echo "looks like this was a non-static compile"
                        echo "please run the installer from"
                        echo "fs01/ffm/static"
                fi
        else
                echo "ffmpeg exists, but is not a symlink."
                echo "maybe this was a rpm install?"
                echo "please run the installer from"
                echo "fs01/ffm/static"
        fi
elif [ $( ls -1 /usr/local/bin/ffmpeg.*|wc -l  ) -gt 1 ]
then
        ffSym
else
        echo "ffmpeg does not exist"
        echo "please run the installer from"
        echo "fs01/ffm/static"
fi