#!/usr/bin/env ruby

file = ARGV.pop || raise("please supply a filename")

raise("file '#{file}' does not exist") unless File.exist?(file)

%x(
  openssl \
    aes-256-cbc \
    -in #{file} \
    -out #{file}.enc \
    -pass file:secret.key \
    -iter 1000000
)

output = %[{{<dither #{ File.basename(file) } "782x600" />}}]

IO.popen("pbcopy", "w") { |pb| pb.write(output) }

puts output

File.delete(file)