# frozen_string_literal: true

module Qismo
  class Client
    include Qismo::Api

    # @return [String, NilClass]
    DEFAULT_APP_ID = ENV["QISCUS_APP_ID"]

    # @return [String, NilClass]
    DEFAULT_SECRET_KEY = ENV["QISCUS_SECRET_KEY"]

    # @return [String]
    DEFAULT_URL = ENV["QISCUS_OMNICHANNEL_URL"] || "https://qismo.qiscus.com"

    # @return [Hash]
    DEFAULT_OPTIONS = {
      app_id: DEFAULT_APP_ID,
      secret_key: DEFAULT_SECRET_KEY,
      url: DEFAULT_URL,
      logger: nil,
      instrumentation: nil,
      timeout: nil,
      proxy: nil,
    }

    attr_accessor(*DEFAULT_OPTIONS.keys)

    # Initialize client
    #
    # @param options [Hash]
    def initialize(options = {})
      DEFAULT_OPTIONS.merge(options).each do |key, value|
        instance_variable_set("@#{key}", value)
      end
    end

    # Send http request with post method
    #
    # @param path [String]
    # @param body [Hash]
    # @return [Qismo::SingleObject]
    def post(path, body = {})
      request(:post, path, json: body)
    end

    # Send HTTP request with post method to upload file
    #
    # @param path [String]
    # @param body [Hash]
    # @return [Qismo::SingleObject]
    def post_upload(path, body = {})
      request(:post, form: body)
    end

    # Send HTTP request with get method
    #
    # @param path [String]
    # @param params [Hash]
    # @return [Qismo::SingleObject]
    def get(path, params = {})
      request(:get, path, params: params)
    end

    # Send HTTP request with delete method
    #
    # @param path [String]
    # @param params [Hash]
    # @return [Qismo::SingleObject]
    def delete(path, params = {})
      request(:delete, path, params: params)
    end

    # Send HTTP request
    #
    # @param method [Symbol, String]
    # @param path [String]
    # @param headers [Hash]
    # @param params [Hash]
    # @param json [Hash]
    # @return [Qismo::SingleObject]
    def request(method, path, headers: {}, params: {}, json: {})
      res = connection.request(method, @url + path, {
        headers: headers,
        params: params,
        json: json,
      })

      if res.status.success?
        return SingleObject.new(JSON.parse(res.to_s))
      end

      if res.status.server_error?
        raise InternalServerError.new("Qiscus Omnichannel server error", status_code: res.code, response_body: res.to_s)
      end

      if res.status.client_error?
        body = SingleObject.new(JSON.parse(res.to_s))

        error = body.errors
        error = error.message if error.is_a?(SingleObject)

        error_klass_map = {
          400 => BadRequestError,
          401 => UnauthorizedError,
          402 => PaymentRequiredError,
          403 => ForbiddenError,
          404 => NotFoundError,
          429 => TooManyRequestError,
        }

        error_klass = error_klass_map[res.code] || HTTPRequestError
        raise error_klass.new(error, status_code: res.code, response_body: res.to_s)
      end
    end

    # Http connection config
    #
    # @return [HTTP::Chainable]
    def connection
      http = HTTP

      unless @logger.nil?
        http = http.use(logging: @logger)
      end

      unless @instrumentation.nil?
        http = http.use(instrumentation: @instrumentation)
      end

      unless @timeout.nil?
        http = if @timeout.is_a?(Hash)
          http.timeout(**@timeout)
        else
          http.timeout(@timeout)
        end
      end

      unless @proxy.nil?
        http = http.via(*@proxy)
      end

      http.headers({
        "Qiscus-App-Id": @app_id,
        "Qiscus-Secret-Key": @secret_key,
        "User-Agent": user_agent.to_json,
      })
    end

    # Http user agent config
    #
    # @return [Hash]
    def user_agent
      {
        lib_version: Qismo::VERSION,
        lang: "ruby",
        lang_version: RUBY_VERSION,
        platform: RUBY_PLATFORM,
        engine: defined?(RUBY_ENGINE) ? RUBY_ENGINE : "",
      }
    end
  end
end