describe Appsignal::Hooks::SidekiqHook do
  describe "#dependencies_present?" do
    subject { described_class.new.dependencies_present? }

    context "when Sidekiq constant is found" do
      before { stub_const "Sidekiq", Class.new }

      it { is_expected.to be_truthy }
    end

    context "when Sidekiq constant is not found" do
      before { hide_const "Sidekiq" }

      it { is_expected.to be_falsy }
    end
  end

  describe "#install" do
    class SidekiqMiddlewareMock < Set
      def exists?(middleware)
        include?(middleware)
      end
    end
    module SidekiqMock
      def self.middlewares
        @middlewares ||= SidekiqMiddlewareMock.new
      end

      def self.configure_server
        yield self
      end

      def self.server_middleware
        yield middlewares if block_given?
        middlewares
      end
    end

    before do
      Appsignal.config = project_fixture_config
      stub_const "Sidekiq", SidekiqMock
    end

    it "adds the AppSignal SidekiqPlugin to the Sidekiq middleware chain" do
      described_class.new.install

      expect(Sidekiq.server_middleware.exists?(Appsignal::Hooks::SidekiqPlugin)).to be(true)
    end
  end
end

describe Appsignal::Hooks::SidekiqPlugin, :with_yaml_parse_error => false do
  class DelayedTestClass; end

  let(:namespace) { Appsignal::Transaction::BACKGROUND_JOB }
  let(:worker) { anything }
  let(:queue) { anything }
  let(:given_args) do
    [
      "foo",
      {
        :foo => "Foo",
        :bar => "Bar",
        "baz" => { 1 => :foo }
      }
    ]
  end
  let(:expected_args) do
    [
      "foo",
      {
        "foo" => "Foo",
        "bar" => "Bar",
        "baz" => { "1" => "foo" }
      }
    ]
  end
  let(:job_class) { "TestClass" }
  let(:jid) { "b4a577edbccf1d805744efa9" }
  let(:item) do
    {
      "jid"         => jid,
      "class"       => job_class,
      "retry_count" => 0,
      "queue"       => "default",
      "created_at"  => Time.parse("2001-01-01 10:00:00UTC").to_f,
      "enqueued_at" => Time.parse("2001-01-01 10:00:00UTC").to_f,
      "args"        => given_args,
      "extra"       => "data"
    }
  end
  let(:plugin) { Appsignal::Hooks::SidekiqPlugin.new }
  let(:log) { StringIO.new }
  before do
    start_agent
    Appsignal.logger = test_logger(log)
  end
  around { |example| keep_transactions { example.run } }
  after :with_yaml_parse_error => false do
    expect(log_contents(log)).to_not contains_log(:warn, "Unable to load YAML")
  end

  describe "internal Sidekiq job values" do
    it "does not save internal Sidekiq values as metadata on transaction" do
      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash["metadata"].keys)
        .to_not include(*Appsignal::Hooks::SidekiqPlugin::EXCLUDED_JOB_KEYS)
    end
  end

  context "with parameter filtering" do
    before do
      Appsignal.config = project_fixture_config("production")
      Appsignal.config[:filter_parameters] = ["foo"]
    end

    it "filters selected arguments" do
      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash["sample_data"]).to include(
        "params" => [
          "foo",
          {
            "foo" => "[FILTERED]",
            "bar" => "Bar",
            "baz" => { "1" => "foo" }
          }
        ]
      )
    end
  end

  context "with encrypted arguments" do
    before do
      item["encrypt"] = true
      item["args"] << "super secret value" # Last argument will be replaced
    end

    it "replaces the last argument (the secret bag) with an [encrypted data] string" do
      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash["sample_data"]).to include(
        "params" => expected_args << "[encrypted data]"
      )
    end
  end

  context "when using the Sidekiq delayed extension" do
    let(:item) do
      {
        "jid" => jid,
        "class" => "Sidekiq::Extensions::DelayedClass",
        "queue" => "default",
        "args" => [
          "---\n- !ruby/class 'DelayedTestClass'\n- :foo_method\n- - :bar: baz\n"
        ],
        "retry" => true,
        "created_at" => Time.parse("2001-01-01 10:00:00UTC").to_f,
        "enqueued_at" => Time.parse("2001-01-01 10:00:00UTC").to_f,
        "extra" => "data"
      }
    end

    it "uses the delayed class and method name for the action" do
      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash["action"]).to eq("DelayedTestClass.foo_method")
      expect(transaction_hash["sample_data"]).to include(
        "params" => ["bar" => "baz"]
      )
    end

    context "when job arguments is a malformed YAML object", :with_yaml_parse_error => true do
      before { item["args"] = [] }

      it "logs a warning and uses the default argument" do
        perform_job

        transaction_hash = transaction.to_h
        expect(transaction_hash["action"]).to eq("Sidekiq::Extensions::DelayedClass#perform")
        expect(transaction_hash["sample_data"]).to include("params" => [])
        expect(log_contents(log)).to contains_log(:warn, "Unable to load YAML")
      end
    end
  end

  context "when using the Sidekiq ActiveRecord instance delayed extension" do
    let(:item) do
      {
        "jid" => jid,
        "class" => "Sidekiq::Extensions::DelayedModel",
        "queue" => "default",
        "args" => [
          "---\n- !ruby/object:DelayedTestClass {}\n- :foo_method\n- - :bar: :baz\n"
        ],
        "retry" => true,
        "created_at" => Time.parse("2001-01-01 10:00:00UTC").to_f,
        "enqueued_at" => Time.parse("2001-01-01 10:00:00UTC").to_f,
        "extra" => "data"
      }
    end

    it "uses the delayed class and method name for the action" do
      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash["action"]).to eq("DelayedTestClass#foo_method")
      expect(transaction_hash["sample_data"]).to include(
        "params" => ["bar" => "baz"]
      )
    end

    context "when job arguments is a malformed YAML object", :with_yaml_parse_error => true do
      before { item["args"] = [] }

      it "logs a warning and uses the default argument" do
        perform_job

        transaction_hash = transaction.to_h
        expect(transaction_hash["action"]).to eq("Sidekiq::Extensions::DelayedModel#perform")
        expect(transaction_hash["sample_data"]).to include("params" => [])
        expect(log_contents(log)).to contains_log(:warn, "Unable to load YAML")
      end
    end
  end

  context "with an error" do
    let(:error) { ExampleException }

    it "creates a transaction and adds the error" do
      expect(Appsignal).to receive(:increment_counter)
        .with("sidekiq_queue_job_count", 1, :queue => "default", :status => :failed)
      expect(Appsignal).to receive(:increment_counter)
        .with("sidekiq_queue_job_count", 1, :queue => "default", :status => :processed)

      expect do
        perform_job { raise error, "uh oh" }
      end.to raise_error(error)

      transaction_hash = transaction.to_h
      expect(transaction_hash).to include(
        "id" => jid,
        "action" => "TestClass#perform",
        "error" => {
          "name" => "ExampleException",
          "message" => "uh oh",
          # TODO: backtrace should be an Array of Strings
          # https://github.com/appsignal/appsignal-agent/issues/294
          "backtrace" => kind_of(String)
        },
        "metadata" => {
          "extra" => "data",
          "queue" => "default",
          "retry_count" => "0"
        },
        "namespace" => namespace,
        "sample_data" => {
          "environment" => {},
          "params" => expected_args,
          "tags" => {}
        }
      )
      expect_transaction_to_have_sidekiq_event(transaction_hash)
    end
  end

  context "without an error" do
    it "creates a transaction with events" do
      expect(Appsignal).to receive(:increment_counter)
        .with("sidekiq_queue_job_count", 1, :queue => "default", :status => :processed)

      perform_job

      transaction_hash = transaction.to_h
      expect(transaction_hash).to include(
        "id" => jid,
        "action" => "TestClass#perform",
        "error" => nil,
        "metadata" => {
          "extra" => "data",
          "queue" => "default",
          "retry_count" => "0"
        },
        "namespace" => namespace,
        "sample_data" => {
          "environment" => {},
          "params" => expected_args,
          "tags" => {}
        }
      )
      # TODO: Not available in transaction.to_h yet.
      # https://github.com/appsignal/appsignal-agent/issues/293
      expect(transaction.request.env).to eq(
        :queue_start => Time.parse("2001-01-01 10:00:00UTC").to_f
      )
      expect_transaction_to_have_sidekiq_event(transaction_hash)
    end
  end

  def perform_job
    Timecop.freeze(Time.parse("2001-01-01 10:01:00UTC")) do
      plugin.call(worker, item, queue) do
        yield if block_given?
      end
    end
  end

  def transaction
    last_transaction
  end

  def expect_transaction_to_have_sidekiq_event(transaction_hash)
    events = transaction_hash["events"]
    expect(events.count).to eq(1)
    expect(events.first).to include(
      "name"        => "perform_job.sidekiq",
      "title"       => "",
      "count"       => 1,
      "body"        => "",
      "body_format" => Appsignal::EventFormatter::DEFAULT
    )
  end
end

if DependencyHelper.active_job_present?
  require "active_job"
  require "action_mailer"
  require "sidekiq/testing"

  describe "Sidekiq ActiveJob integration" do
    let(:namespace) { Appsignal::Transaction::BACKGROUND_JOB }
    let(:time) { Time.parse("2001-01-01 10:00:00UTC") }
    let(:log) { StringIO.new }
    let(:given_args) do
      [
        "foo",
        {
          :foo => "Foo",
          "bar" => "Bar",
          "baz" => { "1" => "foo" }
        }
      ]
    end
    let(:expected_args) do
      [
        "foo",
        {
          "_aj_symbol_keys" => ["foo"],
          "foo" => "Foo",
          "bar" => "Bar",
          "baz" => {
            "_aj_symbol_keys" => [],
            "1" => "foo"
          }
        }
      ]
    end
    let(:expected_tags) do
      {}.tap do |hash|
        hash["active_job_id"] = kind_of(String)
        if DependencyHelper.rails_version >= Gem::Version.new("5.0.0")
          hash["provider_job_id"] = kind_of(String)
        end
      end
    end
    before do
      start_agent
      Appsignal.logger = test_logger(log)
      ActiveJob::Base.queue_adapter = :sidekiq

      class ActiveJobSidekiqTestJob < ActiveJob::Base
        self.queue_adapter = :sidekiq

        def perform(*_args)
        end
      end

      class ActiveJobSidekiqErrorTestJob < ActiveJob::Base
        self.queue_adapter = :sidekiq

        def perform(*_args)
          raise "uh oh"
        end
      end
      # Manually add the AppSignal middleware for the Testing environment.
      # It doesn't use configured middlewares by default looks like.
      # We test somewhere else if the middleware is installed properly.
      Sidekiq::Testing.server_middleware do |chain|
        chain.add Appsignal::Hooks::SidekiqPlugin
      end
    end
    around do |example|
      keep_transactions do
        Sidekiq::Testing.fake! do
          example.run
        end
      end
    end
    after do
      Object.send(:remove_const, :ActiveJobSidekiqTestJob)
      Object.send(:remove_const, :ActiveJobSidekiqErrorTestJob)
    end

    it "reports the transaction from the ActiveJob integration" do
      perform_job(ActiveJobSidekiqTestJob, given_args)

      transaction = last_transaction
      transaction_hash = transaction.to_h
      expect(transaction_hash).to include(
        "action" => "ActiveJobSidekiqTestJob#perform",
        "error" => nil,
        "namespace" => namespace,
        "metadata" => hash_including(
          "queue" => "default"
        ),
        "sample_data" => hash_including(
          "environment" => {},
          "params" => [expected_args],
          "tags" => expected_tags.merge("queue" => "default")
        )
      )
      expect(transaction.request.env).to eq(:queue_start => time.to_f)
      events = transaction_hash["events"]
        .sort_by { |e| e["start"] }
        .map { |event| event["name"] }
      expect(events)
        .to eq(["perform_job.sidekiq", "perform_start.active_job", "perform.active_job"])
    end

    context "with error" do
      it "reports the error on the transaction from the ActiveRecord integration" do
        expect do
          perform_job(ActiveJobSidekiqErrorTestJob, given_args)
        end.to raise_error(RuntimeError, "uh oh")

        transaction = last_transaction
        transaction_hash = transaction.to_h
        expect(transaction_hash).to include(
          "action" => "ActiveJobSidekiqErrorTestJob#perform",
          "error" => {
            "name" => "RuntimeError",
            "message" => "uh oh",
            "backtrace" => kind_of(String)
          },
          "namespace" => namespace,
          "metadata" => hash_including(
            "queue" => "default"
          ),
          "sample_data" => hash_including(
            "environment" => {},
            "params" => [expected_args],
            "tags" => expected_tags.merge("queue" => "default")
          )
        )
        expect(transaction.request.env).to eq(:queue_start => time.to_f)
        events = transaction_hash["events"]
          .sort_by { |e| e["start"] }
          .map { |event| event["name"] }
        expect(events)
          .to eq(["perform_job.sidekiq", "perform_start.active_job", "perform.active_job"])
      end
    end

    context "with ActionMailer" do
      include ActionMailerHelpers

      before do
        class ActionMailerSidekiqTestJob < ActionMailer::Base
          def welcome(*args)
          end
        end
      end

      it "reports ActionMailer data on the transaction" do
        perform_mailer(ActionMailerSidekiqTestJob, :welcome, given_args)

        transaction = last_transaction
        transaction_hash = transaction.to_h
        expect(transaction_hash).to include(
          "action" => "ActionMailerSidekiqTestJob#welcome",
          "sample_data" => hash_including(
            "params" => ["ActionMailerSidekiqTestJob", "welcome", "deliver_now"] + expected_args
          )
        )
      end
    end

    def perform_sidekiq
      Timecop.freeze(time) do
        yield
        # Combined with Sidekiq::Testing.fake! and drain_all we get a
        # enqueue_at in the job data.
        Sidekiq::Worker.drain_all
      end
    end

    def perform_job(job_class, args)
      perform_sidekiq { job_class.perform_later(args) }
    end

    def perform_mailer(mailer, method, args = nil)
      perform_sidekiq { perform_action_mailer(mailer, method, args) }
    end
  end
end