#!/usr/bin/env ruby
# frozen_string_literal: true

# Usage:
# export CLIENT_PRIVATE_KEY_HEX="your_hex_private_key"
# export CLIENT_PUBLIC_KEY_ZBASE32="your_zbase32_public_key"
# ./send_signed_message.rb yy5g76ch3mm7f4qcw3w3ag8h1x7k53631hjhn8ugic1buunid331

require 'json'
require 'ed25519'
require 'zbase32'
require 'net/http'
require 'uri'

# Check for server_public_key argument
if ARGV.empty?
  puts 'Error: server_public_key (ZBase32) is required as the first argument.'
  puts "Usage: #{$PROGRAM_NAME} <server_public_key>"
  exit 1
end

# Configuration
server_public_key = ARGV[0]
# Use environment variables or fall back to defaults
server_url = ENV.fetch('SERVER_URL', 'http://arkipel.localhost:3000')
client_private_key_hex = ENV.fetch('CLIENT_PRIVATE_KEY_HEX',
                                   'a1b2c3d4e5f678901234567890abcdef00000000000000000000000000000000')
client_public_key_zbase32 = ENV.fetch('CLIENT_PUBLIC_KEY_ZBASE32',
                                      'yy5g76ch3mm7f4qcw3w3ag8h1x7k53631hjhn8ugic1buunid331')
payload_type = 'person:query'

# Construct the payload
payload = { type: payload_type, id: 1 }
# payload = { type: payload_type, message_id: '691e0fc72d409f35d84b1afb' }

# Generate a timestamp
timestamp = Time.now.utc.iso8601

puts "Message to sign: #{payload}"

# Sign the message using the client's private key (hex)
private_key = Ed25519::SigningKey.new([client_private_key_hex].pack('H*'))
signature_hex = private_key.sign(payload.to_json).unpack1('H*')

# Construct the full request body
request_body = {
  source_public_key: client_public_key_zbase32,
  source_site: {},
  created_at: timestamp,
  signature: signature_hex,
  payload: payload
}.to_json

# Send the request
uri = URI.parse("#{server_url}/arkipel/#{server_public_key}/streams")
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Post.new(uri.request_uri, 'Content-Type' => 'application/json', 'Accept' => 'application/json')
request.body = request_body
response = http.request(request)

# Output
puts "\nRequest body to #{uri}:"
puts JSON.pretty_generate(JSON.parse(request_body))
puts "\n"
puts "Response: #{response.code} #{response.message}"
puts JSON.pretty_generate(JSON.parse(response.body))