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# frozen_string_literal: true
require 'rubygems/command'
require 'rubygems/local_remote_options'
require 'rubygems/version_option'
require 'rubygems/gemcutter_utilities'

class Gem::Commands::YankCommand < Gem::Command
  include Gem::LocalRemoteOptions
  include Gem::VersionOption
  include Gem::GemcutterUtilities

def description # :nodoc:
    <<-EOF
The yank command permanently removes a gem you pushed to a server.

Once you have pushed a gem several downloads will happen automatically
via the webhooks. If you accidentally pushed passwords or other sensitive
data you will need to change them immediately and yank your gem.
    EOF
  end

def arguments # :nodoc:
    "GEM       name of gem"
  end

def usage # :nodoc:
    "#{program_name} GEM -v VERSION [-p PLATFORM] [--key KEY_NAME] [--host HOST]"
  end

def initialize
    super 'yank', 'Remove a pushed gem from the index'

add_version_option("remove")
    add_platform_option("remove")

add_option('--host HOST',
               'Yank from another gemcutter-compatible host',
               '  (e.g. https://rubygems.org)') do |value, options|
      options[:host] = value
    end

add_key_option
    @host = nil
  end

def execute
    @host = options[:host]

sign_in @host

version   = get_version_from_requirements(options[:version])
    platform  = get_platform_from_requirements(options)

if version
      yank_gem(version, platform)
    else
      say "A version argument is required: #{usage}"
      terminate_interaction
    end
  end

def yank_gem(version, platform)
    say "Yanking gem from #{self.host}..."
    yank_api_request(:delete, version, platform, "api/v1/gems/yank")
  end

private

def yank_api_request(method, version, platform, api)
    name = get_one_gem_name
    response = rubygems_api_request(method, api, host) do |request|
      request.add_field("Authorization", api_key)

data = {
        'gem_name' => name,
        'version' => version,
      }
      data['platform'] = platform if platform

request.set_form_data data
    end
    say response.body
  end

def get_version_from_requirements(requirements)
    requirements.requirements.first[1].version
  rescue
    nil
  end

def get_platform_from_requirements(requirements)
    Gem.platforms[1].to_s if requirements.key? :added_platform
  end

end