#!/usr/bin/env ruby
require 'optparse'
require 'io/console'

require_relative '../../lib/rnp'

options = {keys_armored: false, armored: false}
parser = OptionParser.new do |opts|
  opts.banner = "Usage: #{$0} [options] <pubkey>"
  opts.on('-k', '--keys-armored', 'Pubkey is ASCII armored') do
    options[:keys_armored] = true
  end
  opts.on('-a', '--armored', 'Input file is ASCII armored') do
    options[:armored] = true
  end
  opts.on('-h', '--help', 'Print this help') do
    puts opts
    exit
  end
end
parser.parse!

if ARGV.length != 1
  parser.display
  exit
end

pubkey_filename = ARGV.shift

# Load keys/keyring
keyring_mem = LibC::calloc(1, LibRNP::PGPKeyring.size)
keyring = LibRNP::PGPKeyring.new(keyring_mem)
if 1 != LibRNP::pgp_keyring_fileread(keyring, options[:keys_armored] ? 1 : 0, pubkey_filename)
  puts 'Errors encountered while loading keyring.'
  exit 1
end

pgpio = LibRNP::PGPIO.new
stderr_fp = LibC::fdopen($stderr.to_i, 'w')
pgpio[:outs] = stderr_fp
pgpio[:errs] = stderr_fp
pgpio[:res] = stderr_fp

armored = options[:armored] ? 1 : 0

validation = LibRNP::PGPValidation.new
mem_ptr = LibC::calloc(1, LibRNP::PGPMemory.size)
mem = LibRNP::PGPMemory.new(mem_ptr)

$stdin.binmode
data = $stdin.read
data_buf = FFI::MemoryPointer.new(:uint8, data.bytesize)
data_buf.put_bytes(0, data)
LibRNP::pgp_memory_add(mem, data_buf, data_buf.size)
ret = LibRNP::pgp_validate_mem(pgpio, validation, mem, nil, armored, keyring)
if ret == 1
  puts 'Success'
else
  puts 'Failed!'
end