#!/usr/bin/ruby

$oxodir="/data/oxocard"

def ex(cmd)
    puts cmd
    res = system(cmd)
    if (res==nil)
        puts "Could not even run the command #{cmd}. Aborting."
        exit(-1)
    end
    return res
end

def trycmd(cmd, n=2)
    n.times {
        return true if ex(cmd)
        puts "command returned an error, trying again in 2 sec.."
        sleep(2)
    }
    puts "Executing #{cmd} returned an error. Aborting."
    exit(-1)
end


def dl(url, force=false)
    file = File.basename(url)
    ext = file.rindex(".")
    file = file[0...ext]+"-"+Time.now.strftime("%F")+file[ext..-1]
    if File.exists?(file) and !force
        puts "File #{file} already exists. Not downloading again. (use -f to force)"
    else
       unless ex("curl -L #{url} > #{$oxodir}/#{file}")
           ex("rm -f #{$oxodir}/#{file}")
           puts "Could not download from #{url}, aborting."
           exit(-1)
       end
    end
end

force = (ARGV[0]=="-f")

puts "Downloading TigerJython Images to #{$oxodir}"


dl("https://www.tigerjython4kids.ch/download/MicroPython.bin", force)
dl("https://www.tigerjython4kids.ch/download/oxocardmodules.zip", force)
dl("https://www.tigerjython4kids.ch/download/blockly_flash.zip", force)