#!/usr/bin/env ruby

require 'commander/import'

require 'houston'

HighLine.track_eof = false # Fix for built-in Ruby
Signal.trap("INT") {} # Suppress backtrace when exiting command

program :version, Houston::VERSION
program :description, 'A command-line interface for sending push notifications'

program :help, 'Author', 'Mattt Thompson <m@mattt.me>'
program :help, 'Website', 'https://github.com/mattt'
program :help_formatter, :compact

default_command :help

command :push do |c|
  c.syntax = 'apn push TOKEN [...]'
  c.summary = 'Sends an Apple Push Notification to specified devices'
  c.description = ''

  c.example 'description', 'apn push <token> -m "Hello, World" -b 57 -s sosumi.aiff'
  c.option '-m', '--alert ALERT', 'Body of the alert to send in the push notification'
  c.option '-b', '--badge NUMBER', 'Badge number to set with the push notification'
  c.option '-s', '--sound SOUND', 'Sound to play with the notification'
  c.option '-n', '--[no]-newsstand', 'Indicates content available for Newsstand'
  c.option '-d', '--data KEY=VALUE', Array, 'Passes custom data to payload (as comma-delimited "key=value" declarations)'
  c.option '-P', '--payload PAYLOAD', 'JSON payload for notifications'
  c.option '-e', '--environment ENV', [:production, :development], 'Environment to send push notification (production or development (default))'
  c.option '-c', '--certificate CERTIFICATE', 'Path to certificate (.pem) file'
  c.option '-p', '--[no]-passphrase', 'Prompt for a certificate passphrase'

  c.action do |args, options|
    say_error "One or more device tokens required" and abort if args.empty?

    @environment = options.environment.downcase.to_sym rescue :development
    say_error "Invalid environment,'#{@environment}' (should be either :development or :production)" and abort unless [:development, :production].include?(@environment)

    @certificate = options.certificate
    say_error "Missing certificate file option (-c /path/to/certificate.pem)" and abort unless @certificate
    say_error "Could not find certificate file '#{@certificate}'" and abort unless File.exists?(@certificate)

    @passphrase = options.passphrase ? password : ""

    @alert = options.alert
    @badge = options.badge.nil? ? nil : options.badge.to_i
    @sound = options.sound
    @content_available = options.newsstand

    if options.payload
      begin
        @data = JSON.parse(options.payload)
      rescue => message
        say_error "Exception parsing JSON payload: #{message}" and abort
      end
    elsif options.data
      begin
        @data = Hash[options.data.collect{|data| data.split(/\=/)}]
      rescue => message
        say_error "Exception parsing JSON payload: #{message}" and abort
      end
    end

    unless @alert or @badge or @newsstand or @data
      placeholder = "Enter your alert message"
      @alert = ask_editor placeholder
      say_error "Payload contents required" and abort if @alert.nil? or @alert == placeholder
    end

    @notifications = []
    args.each do |token|
      notification = Houston::Notification.new(@data || {})
      notification.token = token
      notification.alert = @alert if @alert
      notification.badge = @badge if @badge
      notification.sound = @sound if @sound
      notification.content_available = @content_available if @content_available

      @notifications << notification
    end

    client = @environment == :production ? Houston::Client.production : Houston::Client.development
    client.certificate = File.read(@certificate)
    client.passphrase = @passphrase

    begin
      client.push(*@notifications)
    rescue => message
      say_error "Exception sending notification: #{message}" and abort
    end

    say_ok "Push notifications successfully sent"
  end
end