require './resource_path'
require './response_check'

require 'test/unit'
require 'digest'

class HTTPResponseTest < Test::Unit::TestCase

  def default_test; end  # placeholder to stop Test::Unit from complaining

  def self.useragent=(useragent)
    ResponseCheck.useragent = useragent
  end
  def self.reset_useragent
    ResponseCheck.useragent = nil
  end
  def self.ssl_no_verify=(verify)
    ResponseCheck.ssl_no_verify = verify
  end

  # no accessors needed, as every class that is derived from this one can be adjusted featurewise by just setting:
  # @useragent
  # @ssl_no_verify

  def self.uri_be_code(options)
    @get_uri    = options[:uri].to_s
    @http_code  = options[:code].to_s
    @last_uri = @get_uri
    @last_code = @http_code

    id = Digest::SHA1.hexdigest "#{@get_uri}#{@http_code}#{@ssl_no_verify}#{@useragent}"
    id = id[0..7]

    #puts "uri to be code ssl_no_verify: " + @ssl_no_verify.to_s
    class_eval <<-CODE
      def test_#{name_for(@get_uri)}_response_code_should_be_#{@http_code}_#{id}
        check = ResponseCheck.new(:get_uri => '#{@get_uri}')
        if #{@ssl_no_verify} 
          check.ssl_no_verify = #{@ssl_no_verify}
        end
        if '#{@useragent}'.size > 0
          check.useragent = '#{@useragent}'
        end

        assert_equal('#{@http_code}', check.response.code, 
                     "'" + check.get_uri + "' says '" + check.response.code + "' instead of '#{@http_code}'.")
      end
    CODE
  end

  def self.uri_be_success(options)
    @get_uri  = options.fetch(:uri)
    @last_uri = @get_uri

    id = Digest::SHA1.hexdigest "#{@get_uri}#{@ssl_no_verify}"
    id = id[0..7]

    class_eval (
      <<-CODE
      def test_#{name_for(@get_uri)}_response_should_be_success_#{id}
        check = ResponseCheck.new(:get_uri => '#{@get_uri}')
        if #{@ssl_no_verify} 
          check.ssl_no_verify = #{@ssl_no_verify}
        end
        if '#{@useragent}'.size > 0
          check.useragent = '#{@useragent}'
        end

        assert_equal(true, check.success?, 
                     "'" + check.get_uri + "' says '" + check.response.code + "' instead of '2xx'-something.")
      end
      CODE
    )
  end

  def self.uri_body_contains(options)
    @get_uri      = options.fetch(:uri, @last_to)
    contains          = nil
    contains_trueness = false
    if (options[:strings] != nil) and (options[:strings].is_a?(Array))
      contains          = options[:strings]
      contains_trueness = true
    else
      abort "'uri_body_contains :strings => ['abc']' is missing. Remember, must be array."
    end
    @last_uri = @get_uri

    contains.each do |string|
      id = Digest::SHA1.hexdigest "#{@get_uri}#{string}#{@ssl_no_verify}"
      id = id[0..7]
      #puts string
      class_eval <<-CODE
        def test_#{name_for(@get_uri)}_response_contains_a_string_#{id}
          check = ResponseCheck.new(:get_uri => '#{@get_uri}')
          if #{@ssl_no_verify} 
            check.ssl_no_verify = #{@ssl_no_verify}
          end
          if '#{@useragent}'.size > 0
            check.useragent = '#{@useragent}'
          end

          to_match = '#{string}'
          matched = check.body_contains?(to_match)          
          assert_equal(true, matched,
                       "'" + check.get_uri + "' does not contain '" + to_match + "' inside response body.")
        end
      CODE
    end
  end


  def self.uri_should_redirect(options = {})
    begin
      @get_uri         = options.fetch(:from, @last_to)
      wanted_dst_uri   = options.fetch(:to)
    rescue
      abort "Usage: uri_should_redirect [:from => '',] :to => ''\n       :from defaults to @last_to"
    end

    if @get_uri == wanted_dst_uri
      abort "uri_should_redirect: :to must be different than :from. Both were '#{wanted_dst_uri}'."
    end
    by_code          = nil
    by_code_trueness = false
    if options[:by] != nil
      if options[:by].to_i >= 300 and options[:by].to_i < 400
        by_code          = options[:by].to_i
        @last_code = by_code
        by_code_trueness = true
      else
        abort "uri_should_redirect: :by must be in 300 to 399 range. Not '#{options[:by]}'."
      end
    end
    @last_to = wanted_dst_uri
    @last_from = @get_uri

    id = Digest::SHA1.hexdigest "#{@get_uri}#{wanted_dst_uri}#{by_code}#{@ssl_no_verify}#{@useragent}"
    id = id[0..7]

    class_eval <<-CODE
      def test_#{name_for(@get_uri)}_should_redirect_to_#{name_for(wanted_dst_uri)}_#{id}
        check = ResponseCheck.new(:get_uri => '#{@get_uri}')
        check.wanted_dst_uri = '#{wanted_dst_uri}'
        if #{@ssl_no_verify} 
          check.ssl_no_verify = #{@ssl_no_verify}
        end
        if '#{@useragent}'.size > 0
          check.useragent = '#{@useragent}'
        end

        assert_equal(true, check.redirect?, 
                     "'" + check.get_uri + "' is not redirecting at all (" + check.response.code + "), but we expected a redirection to '" + check.wanted_dst_uri + "'.")

        assert_equal(check.wanted_dst_uri, check.redirected_uri, 
                     "'" + check.get_uri + "' is not redirecting to '" + check.wanted_dst_uri + "'.")

        @response = check.response
        
        if #{by_code_trueness}
          assert_equal('#{by_code}', check.response.code,
                       "The redirection is not the wanted '#{by_code}' redirect. It's a '" + check.response.code + "'." + 
                       "From '" + check.get_uri + "' to '" + check.wanted_dst_uri + "'")
        end
      end
    CODE
  end

  def self.path_should_redirect(source, options)
    source_path      = ResourcePath.new(source, :param => 'subdir').to_s
    destination_path = ResourcePath.new(options[:to], :param => 'subdir').to_s
    
    permanent        = options.fetch(:permanent, true)
    
    class_eval <<-CODE
      def test_#{name_for(source_path)}_should_redirect_to_#{name_for(destination_path)}
        check = ResponseCheck.new(:src_path => '#{source_path}', :dst_path => '#{destination_path}')
        if #{@ssl_no_verify}
          check.ssl_no_verify = #{@ssl_no_verify}
        end
        if '#{@useragent}'.size > 0
          check.useragent = '#{@useragent}'
        end
        
        assert_equal true, check.redirect?, "'#{source_path}' is not redirecting"
        assert_equal '#{destination_path}', check.redirected_path, 
                     "'#{source_path}' is not redirecting to '#{destination_path}'"
        
        if #{permanent}
          assert_equal true, check.permanent_redirect?, 
                       "The redirection from '#{source_path}' to '#{destination_path}' doesn't appear to be a permanent redirect"
        end
      end
    CODE

  end

  def self.path_should_not_redirect(path)
    class_eval <<-CODE
      def test_#{name_for(path)}_should_not_redirect
        check = ResponseCheck.new(:src_path => '#{path}')
        if #{@ssl_no_verify}
          check.ssl_no_verify = #{@ssl_no_verify}
        end
        if '#{@useragent}'.size > 0
          check.useragent = '#{@useragent}'
        end
        
        assert_equal false, check.redirect?, "#{path} is redirecting"
        assert_equal true,  check.success?, "#{path} is not a success response"
      end
    CODE
  end

  private

  def self.name_for(path)
    name = path.gsub(/\W+/, '_')
    name.gsub!(/^_+/, '')
    name.gsub!(/_+$/, '')

    name = 'root' if name == ''

    name
  end

end