module Ruqqus

# File lib/ruqqus.rb, line 160
def self.authorize_url(client_id, redirect, scopes, permanent = true, csrf = nil)

  raise(ArgumentError, 'invalid redirect URI') unless URI.regexp =~ redirect
  raise(ArgumentError, 'scopes cannot be empty') unless scopes && !scopes.empty?

  scopes = scopes.map(&:to_sym)
  raise(ArgumentError, "invalid scopes specified") unless scopes.all? { |s| Client::SCOPES.include?(s) }
  if scopes.any? { |s| [:create, :update, :guildmaster].include?(s) } && !scopes.include?(:identity)
    # Add identity permission if missing, which is obviously required for a few other permissions
    scopes << :identity
  end

  url = 'https://ruqqus.com/oauth/authorize'
  url << "?client_id=#{client_id || raise(ArgumentError, 'client ID cannot be nil')}"
  url << "&redirect_uri=#{redirect}"
  url << "&scope=#{scopes.join(',')}"
  url << "&state=#{csrf || Base64.encode64(SecureRandom.uuid).chomp}"
  url << "&permanent=#{permanent}"
  url
end

# File lib/ruqqus.rb, line 119
def self.guild_available?(guild_name)
  begin
    response = RestClient.get("#{Routes::GUILD_AVAILABLE}#{guild_name}")
    json = JSON.parse(response.body, symbolize_names: true)
    return json[:available]
  rescue
    puts 'err'
    return false
  end
end

# File lib/ruqqus.rb, line 100
def self.imgur_upload(client_id, image_path, **opts)
  #noinspection RubyResolve
  raise(Errno::ENOENT, image_path) unless File.exist?(image_path)
  raise(ArgumentError, 'client_id cannot be nil or empty') if client_id.nil? || client_id.empty?

  header = { 'Content-Type': 'application/json', 'Authorization': "Client-ID #{client_id}" }
  params = { image: File.new(image_path), type: 'file', title: opts[:title], description: opts[:description] }

  response = RestClient.post('https://api.imgur.com/3/upload', params, header)
  json = JSON.parse(response.body, symbolize_names: true)
  json[:data][:link]
end

# File lib/ruqqus.rb, line 188
def self.open_browser(url)

  cmd = case RbConfig::CONFIG['host_os']
  when /mswin|mingw|cygwin/ then "start \"\"#{url}\"\""
  when /darwin/ then "open '#{url}'"
  when /linux|bsd/ then "xdg-open '#{url}'"
  else raise(Ruqqus::Error, 'unable to determine how to open URL for current platform')
  end

  system(cmd)
end

# File lib/ruqqus.rb, line 78
def self.proxy
  RestClient.proxy
end

# File lib/ruqqus.rb, line 82
def self.proxy=(uri)
  raise(TypeError, "#{uri} is not a URI") if uri && !uri.is_a?(URI)
  RestClient.proxy = uri
end

# File lib/ruqqus.rb, line 65
def self.proxy_list(anon: :elite, country: nil)
  raise(ArgumentError, 'invalid anonymity value') unless %i(transparent anonymous elite).include?(anon.to_sym)

  url = "https://www.proxy-list.download/api/v1/get?type=https&anon=#{anon}"
  url << "&country=#{country}" if country

  RestClient.get(url) do |resp|
    break if resp.code != 200
    return resp.body.split.map { |proxy| URI.parse("https://#{proxy}") }
  end
  Array.new
end

# File lib/ruqqus.rb, line 136
def self.username_available?(username)
  begin
    response = RestClient.get("#{Routes::USERNAME_AVAILABLE}#{username}")
    json = JSON.parse(response.body)
    return json[username]
  rescue
    return false
  end
end

# File lib/ruqqus.rb, line 210
def self.wait_for_code(port, timeout = 30)

  thread = Thread.new do
    sleep(timeout)
    TCPSocket.open('localhost', port) { |s| s.puts }
  end

  params = {}
  TCPServer.open('localhost', port) do |server|

    session = server.accept
    request = session.gets
    match = /^GET [\/?]+(.*) HTTP.*/.match(request)

    Thread.kill(thread)
    return nil unless match

    $1.split('&').each do |str|
      key, value = str.split('=')
      next unless key && value
      params[key.to_sym] = value
    end

    session.puts "HTTP/1.1 200\r\n"
    session.puts "Content-Type: text/html\r\n"
    session.puts "\r\n"
    session.puts create_response(!!params[:code])

    session.close
  end

  params[:code]
end

# File lib/ruqqus.rb, line 248
  def self.create_response(success)
    args = success ? ['#339966', 'Authorization Confirmed'] : ['#ff0000', 'Authorization Failed']
    format ='<h1 style="text-align: center;"><span style="color: %s;"><strong>%s</strong></span></h1>'
    message = sprintf(format, *args)
    <<-EOS
<html>
<head>
    <style>
    .center {
      margin: 0;
      position: absolute;
      top: 50%;
      left: 50%;
      -ms-transform: translate(-50%, -50%);
      transform: translate(-50%, -50%);
    }
  </style>
</head>
<body>
<div class="center">
    <div><img src="https://raw.githubusercontent.com/ruqqus/ruqqus/master/ruqqus/assets/images/logo/ruqqus_text_logo.png" alt="" width="365" height="92" /></div>
    <p style="text-align: center;">&nbsp;</p>
    #{message}
    <p style="text-align: center;">&nbsp;&nbsp;</p>
    <p style="text-align: center;"><span style="color: #808080;">You can safely close the tab/browser and return to the application.</span></p>
</div>
</body>
</html>
    EOS
  end