#!/usr/bin/env ruby
# Copyright (c) 2019 Yegor Bugayenko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the 'Software'), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

STDOUT.sync = true

require 'slop'
require 'backtrace'
require_relative '../lib/sibit'
require_relative '../lib/sibit/version'

begin
  begin
    opts = Slop.parse(ARGV, strict: true, help: true) do |o|
      o.banner = "Usage (#{Sibit::VERSION}): sibit [options] command [args]
Commands are:
    price:    Get current price of BTC in USD
    latest:   Get hash of the latest block
    generate: Generate a new private key
    create:   Create a public Bitcoin address from the key
    balance:  Check the balance of the Bitcoin address
    pay:      Send a new Bitcoin transaction
Options are:"
      o.bool '--help', 'Read this: https://github.com/yegor256/sibit' do
        puts o
        exit
      end
      o.bool '--verbose', 'Print all possible debug messages'
    end
  rescue Slop::Error => ex
    raise "#{ex.message}"
  end
  raise 'Try --help' if opts.arguments.empty?
  sibit = Sibit.new(log: opts[:verbose] ? STDOUT : nil)
  case opts.arguments[0]
  when 'price'
    puts sibit.price
  when 'latest'
    puts sibit.latest
  when 'generate'
    puts sibit.generate
  when 'create'
    pvt = opts.arguments[1]
    raise 'Private key argument is required' if pvt.nil?
    puts sibit.create(pvt)
  when 'balance'
    address = opts.arguments[1]
    raise 'Address argument is required' if address.nil?
    puts sibit.balance(address)
  when 'pay'
    amount = opts.arguments[1]
    raise 'Amount argument is required' if amount.nil?
    fee = opts.arguments[2]
    raise 'Miners fee argument is required' if fee.nil?
    sources = opts.arguments[3]
    raise 'Addresses argument is required' if sources.nil?
    target = opts.arguments[4]
    raise 'Target argument is required' if target.nil?
    change = opts.arguments[5]
    raise 'Change argument is required' if change.nil?
    puts sibit.pay(
      amount, fee,
      sources.split(',').map { |p| p.split(':') }.to_h,
      target, change
    )
  else
    raise "Command #{opts.arguments[0]} is not supported"
  end
rescue StandardError => ex
  if opts[:verbose]
    puts Backtrace.new(ex).to_s
  else
    puts "ERROR: #{ex.message}"
  end
  exit(255)
end