#!/usr/bin/env ruby

require "open3"

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
)

caption_cmd = ["codex", "exec", "caption this image: #{file}"]
caption_output, status = Open3.capture2e(*caption_cmd)

unless status.success?
  warn "Caption generation failed:\n#{caption_output}"
  exit 1
end

caption = caption_output.split("\n").last.to_s.strip

if caption.empty?
  warn "Caption output was empty."
  exit 1
end

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

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

puts output

File.delete(file)