=begin
#HubSpot Events API

#API for accessing CRM object events.

The version of the OpenAPI document: v3

Generated by: https://openapi-generator.tech
OpenAPI Generator version: 4.3.1

=end

require 'date'
require 'json'
require 'logger'
require 'tempfile'
require 'typhoeus'

module Hubspot
  module Events
    class ApiClient
      # The Configuration object holding settings to be used in the API client.
      attr_accessor :config

      # Defines the headers to be used in HTTP requests of all API calls by default.
      #
      # @return [Hash]
      attr_accessor :default_headers

      # Initializes the ApiClient
      # @option config [Configuration] Configuration for initializing the object, default to Configuration.default
      def initialize(config = Configuration.default)
        @config = config
        @user_agent = "hubspot-api-client-ruby; #{VERSION}"
        @default_headers = {
          'Content-Type' => 'application/json',
          'User-Agent' => @user_agent
        }
      end

      def self.default
        @@default ||= ApiClient.new
      end

      # Call an API with given options.
      #
      # @return [Array<(Object, Integer, Hash)>] an array of 3 elements:
      #   the data deserialized from response body (could be nil), response status code and response headers.
      def call_api(http_method, path, opts = {})
        request = build_request(http_method, path, opts)
        response = request.run

        if @config.debugging
          @config.logger.debug "HTTP response body ~BEGIN~\n#{response.body}\n~END~\n"
        end

        if !response.success? && config.error_handler.any?
          config.error_handler.each do |statuses, opts|
            statuses = statuses.is_a?(Integer) ? [statuses] : statuses

            retries = opts[:max_retries] || 5
            while retries > 0 && statuses.include?(response.code)
              sleep opts[:seconds_delay] if opts[:seconds_delay]
              response = request.run
              opts[:retry_block].call if opts[:retry_block]
              retries -= 1
            end
          end
        end

        unless response.success?
          if response.timed_out?
            fail ApiError.new('Connection timed out')
          elsif response.code == 0
            # Errors from libcurl will be made visible here
            fail ApiError.new(:code => 0,
                              :message => response.return_message)
          else
            fail ApiError.new(:code => response.code,
                              :response_headers => response.headers,
                              :response_body => response.body),
                 response.status_message
          end
        end

        if opts[:return_type]
          data = deserialize(response, opts[:return_type])
        else
          data = nil
        end
        return data, response.code, response.headers
      end

      # Builds the HTTP request
      #
      # @param [String] http_method HTTP method/verb (e.g. POST)
      # @param [String] path URL path (e.g. /account/new)
      # @option opts [Hash] :header_params Header parameters
      # @option opts [Hash] :query_params Query parameters
      # @option opts [Hash] :form_params Query parameters
      # @option opts [Object] :body HTTP body (JSON/XML)
      # @return [Typhoeus::Request] A Typhoeus Request
      def build_request(http_method, path, opts = {})
        url = build_request_url(path)
        http_method = http_method.to_sym.downcase

        header_params = @default_headers.merge(opts[:header_params] || {})
        query_params = opts[:query_params] || {}
        form_params = opts[:form_params] || {}

        update_params_for_auth! header_params, query_params, opts[:auth_names]

        # set ssl_verifyhosts option based on @config.verify_ssl_host (true/false)
        _verify_ssl_host = @config.verify_ssl_host ? 2 : 0

        req_opts = {
          :method => http_method,
          :headers => header_params,
          :params => query_params,
          :params_encoding => @config.params_encoding,
          :timeout => @config.timeout,
          :ssl_verifypeer => @config.verify_ssl,
          :ssl_verifyhost => _verify_ssl_host,
          :sslcert => @config.cert_file,
          :sslkey => @config.key_file,
          :verbose => @config.debugging
        }

        # set custom cert, if provided
        req_opts[:cainfo] = @config.ssl_ca_cert if @config.ssl_ca_cert

        if [:post, :patch, :put, :delete].include?(http_method)
          req_body = build_request_body(header_params, form_params, opts[:body])
          req_opts.update :body => req_body
          if @config.debugging
            @config.logger.debug "HTTP request body param ~BEGIN~\n#{req_body}\n~END~\n"
          end
        end

        request = Typhoeus::Request.new(url, req_opts)
        download_file(request) if opts[:return_type] == 'File'
        request
      end

      # Builds the HTTP request body
      #
      # @param [Hash] header_params Header parameters
      # @param [Hash] form_params Query parameters
      # @param [Object] body HTTP body (JSON/XML)
      # @return [String] HTTP body data in the form of string
      def build_request_body(header_params, form_params, body)
        # http form
        if header_params['Content-Type'] == 'application/x-www-form-urlencoded' ||
            header_params['Content-Type'] == 'multipart/form-data'
          data = {}
          form_params.each do |key, value|
            case value
            when ::File, ::Array, nil
              # let typhoeus handle File, Array and nil parameters
              data[key] = value
            else
              data[key] = value.to_s
            end
          end
        elsif body
          data = body.is_a?(String) ? body : body.to_json
        else
          data = nil
        end
        data
      end

      # Check if the given MIME is a JSON MIME.
      # JSON MIME examples:
      #   application/json
      #   application/json; charset=UTF8
      #   APPLICATION/JSON
      #   */*
      # @param [String] mime MIME
      # @return [Boolean] True if the MIME is application/json
      def json_mime?(mime)
        (mime == '*/*') || !(mime =~ /Application\/.*json(?!p)(;.*)?/i).nil?
      end

      # Deserialize the response to the given return type.
      #
      # @param [Response] response HTTP response
      # @param [String] return_type some examples: "User", "Array<User>", "Hash<String, Integer>"
      def deserialize(response, return_type)
        body = response.body

        # handle file downloading - return the File instance processed in request callbacks
        # note that response body is empty when the file is written in chunks in request on_body callback
        return @tempfile if return_type == 'File'

        return nil if body.nil? || body.empty?

        # return response body directly for String return type
        return body if return_type == 'String'

        # ensuring a default content type
        content_type = response.headers['Content-Type'] || 'application/json'

        fail "Content-Type is not supported: #{content_type}" unless json_mime?(content_type)

        begin
          data = JSON.parse("[#{body}]", :symbolize_names => true)[0]
        rescue JSON::ParserError => e
          if %w(String Date DateTime).include?(return_type)
            data = body
          else
            raise e
          end
        end

        convert_to_type data, return_type
      end

      # Convert data to the given return type.
      # @param [Object] data Data to be converted
      # @param [String] return_type Return type
      # @return [Mixed] Data in a particular type
      def convert_to_type(data, return_type)
        return nil if data.nil?
        case return_type
        when 'String'
          data.to_s
        when 'Integer'
          data.to_i
        when 'Float'
          data.to_f
        when 'Boolean'
          data == true
        when 'DateTime'
          # parse date time (expecting ISO 8601 format)
          DateTime.parse data
        when 'Date'
          # parse date time (expecting ISO 8601 format)
          Date.parse data
        when 'Object'
          # generic object (usually a Hash), return directly
          data
        when /\AArray<(.+)>\z/
          # e.g. Array<Pet>
          sub_type = $1
          data.map { |item| convert_to_type(item, sub_type) }
        when /\AHash\<String, (.+)\>\z/
          # e.g. Hash<String, Integer>
          sub_type = $1
          {}.tap do |hash|
            data.each { |k, v| hash[k] = convert_to_type(v, sub_type) }
          end
        else
          # models, e.g. Pet
          Hubspot::Events.const_get(return_type).build_from_hash(data)
        end
      end

      # Save response body into a file in (the defined) temporary folder, using the filename
      # from the "Content-Disposition" header if provided, otherwise a random filename.
      # The response body is written to the file in chunks in order to handle files which
      # size is larger than maximum Ruby String or even larger than the maximum memory a Ruby
      # process can use.
      #
      # @see Configuration#temp_folder_path
      def download_file(request)
        tempfile = nil
        encoding = nil
        request.on_headers do |response|
          content_disposition = response.headers['Content-Disposition']
          if content_disposition && content_disposition =~ /filename=/i
            filename = content_disposition[/filename=['"]?([^'"\s]+)['"]?/, 1]
            prefix = sanitize_filename(filename)
          else
            prefix = 'download-'
          end
          prefix = prefix + '-' unless prefix.end_with?('-')
          encoding = response.body.encoding
          tempfile = Tempfile.open(prefix, @config.temp_folder_path, encoding: encoding)
          @tempfile = tempfile
        end
        request.on_body do |chunk|
          chunk.force_encoding(encoding)
          tempfile.write(chunk)
        end
        request.on_complete do |response|
          if tempfile
            tempfile.close
            @config.logger.info "Temp file written to #{tempfile.path}, please copy the file to a proper folder "\
                                "with e.g. `FileUtils.cp(tempfile.path, '/new/file/path')` otherwise the temp file "\
                                "will be deleted automatically with GC. It's also recommended to delete the temp file "\
                                "explicitly with `tempfile.delete`"
          end
        end
      end

      # Sanitize filename by removing path.
      # e.g. ../../sun.gif becomes sun.gif
      #
      # @param [String] filename the filename to be sanitized
      # @return [String] the sanitized filename
      def sanitize_filename(filename)
        filename.gsub(/.*[\/\\]/, '')
      end

      def build_request_url(path)
        # Add leading and trailing slashes to path
        path = "/#{path}".gsub(/\/+/, '/')
        @config.base_url + path
      end

      # Update hearder and query params based on authentication settings.
      #
      # @param [Hash] header_params Header parameters
      # @param [Hash] query_params Query parameters
      # @param [String] auth_names Authentication scheme name
      def update_params_for_auth!(header_params, query_params, auth_names)
        Array(auth_names).each do |auth_name|
          auth_setting = @config.auth_settings[auth_name]
          next unless auth_setting
          case auth_setting[:in]
          when 'header' then header_params[auth_setting[:key]] = auth_setting[:value]
          when 'query'  then query_params[auth_setting[:key]] = auth_setting[:value]
          else fail ArgumentError, 'Authentication token must be in `query` of `header`'
          end
        end
      end

      # Sets user agent in HTTP header
      #
      # @param [String] user_agent User agent (e.g. openapi-generator/ruby/1.0.0)
      def user_agent=(user_agent)
        @user_agent = user_agent
        @default_headers['User-Agent'] = @user_agent
      end

      # Return Accept header based on an array of accepts provided.
      # @param [Array] accepts array for Accept
      # @return [String] the Accept header (e.g. application/json)
      def select_header_accept(accepts)
        return nil if accepts.nil? || accepts.empty?
        # use JSON when present, otherwise use all of the provided
        json_accept = accepts.find { |s| json_mime?(s) }
        json_accept || accepts.join(',')
      end

      # Return Content-Type header based on an array of content types provided.
      # @param [Array] content_types array for Content-Type
      # @return [String] the Content-Type header  (e.g. application/json)
      def select_header_content_type(content_types)
        # use application/json by default
        return 'application/json' if content_types.nil? || content_types.empty?
        # use JSON when present, otherwise use the first one
        json_content_type = content_types.find { |s| json_mime?(s) }
        json_content_type || content_types.first
      end

      # Convert object (array, hash, object, etc) to JSON string.
      # @param [Object] model object to be converted into JSON string
      # @return [String] JSON string representation of the object
      def object_to_http_body(model)
        return model if model.nil? || model.is_a?(String)
        local_body = nil
        if model.is_a?(Array)
          local_body = model.map { |m| object_to_hash(m) }
        else
          local_body = object_to_hash(model)
        end
        local_body.to_json
      end

      # Convert object(non-array) to hash.
      # @param [Object] obj object to be converted into JSON string
      # @return [String] JSON string representation of the object
      def object_to_hash(obj)
        if obj.respond_to?(:to_hash)
          obj.to_hash
        else
          obj
        end
      end

      # Build parameter value according to the given collection format.
      # @param [String] collection_format one of :csv, :ssv, :tsv, :pipes and :multi
      def build_collection_param(param, collection_format)
        case collection_format
        when :csv
          param.join(',')
        when :ssv
          param.join(' ')
        when :tsv
          param.join("\t")
        when :pipes
          param.join('|')
        when :multi
          # return the array directly as typhoeus will handle it as expected
          param
        else
          fail "unknown collection format: #{collection_format.inspect}"
        end
      end
    end
  end
end