require_relative "../../../spec/es_spec_helper"

if ESHelper.es_version_satisfies?('>= 2', '< 6')
  describe "Update actions using groovy scripts", :integration => true, :update_tests => 'groovy' do
    require "logstash/outputs/elasticsearch"

    def get_es_output( options={} )
      settings = {
        "manage_template" => true,
        "index" => "logstash-update",
        "template_overwrite" => true,
        "hosts" => get_host_port(),
        "action" => "update",
        "script_lang" => "groovy"
      }
      LogStash::Outputs::ElasticSearch.new(settings.merge!(options))
    end

    before :each do
      @es = get_client
      # Delete all templates first.
      # Clean ES of data before we start.
      @es.indices.delete_template(:name => "*")
      # This can fail if there are no indexes, ignore failure.
      @es.indices.delete(:index => "*") rescue nil
      @es.index(
        :index => 'logstash-update',
        :type => 'doc',
        :id => "123",
        :body => { :message => 'Test', :counter => 1 }
      )
      @es.indices.refresh
    end

    context "scripted updates" do
      it "should increment a counter with event/doc 'count' variable" do
        subject = get_es_output({ 'document_id' => "123", 'script' => 'scripted_update', 'script_type' => 'file' })
        subject.register
        subject.multi_receive([LogStash::Event.new("count" => 2)])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "123", :refresh => true)
        expect(r["_source"]["counter"]).to eq(3)
      end

      it "should increment a counter with event/doc '[data][count]' nested variable" do
        subject = get_es_output({ 'document_id' => "123", 'script' => 'scripted_update_nested', 'script_type' => 'file' })
        subject.register
        subject.multi_receive([LogStash::Event.new("data" => { "count" => 3 })])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "123", :refresh => true)
        expect(r["_source"]["counter"]).to eq(4)
      end

      it "should increment a counter with event/doc 'count' variable with inline script" do
        subject = get_es_output({
          'document_id' => "123",
          'script' => 'ctx._source.counter += event["counter"]',
          'script_lang' => 'groovy',
          'script_type' => 'inline'
        })
        subject.register
        subject.multi_receive([LogStash::Event.new("counter" => 3 )])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "123", :refresh => true)
        expect(r["_source"]["counter"]).to eq(4)
      end

      it "should increment a counter with event/doc 'count' variable with event/doc as upsert and inline script" do
        subject = get_es_output({
          'document_id' => "123",
          'doc_as_upsert' => true,
          'script' => 'if( ctx._source.containsKey("counter") ){ ctx._source.counter += event["counter"]; } else { ctx._source.counter = event["counter"]; }',
          'script_lang' => 'groovy',
          'script_type' => 'inline'
        })
        subject.register
        subject.multi_receive([LogStash::Event.new("counter" => 3 )])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "123", :refresh => true)
        expect(r["_source"]["counter"]).to eq(4)
      end

      it "should, with new doc, set a counter with event/doc 'count' variable with event/doc as upsert and inline script" do
        subject = get_es_output({
          'document_id' => "456",
          'doc_as_upsert' => true,
          'script' => 'if( ctx._source.containsKey("counter") ){ ctx._source.counter += event["count"]; } else { ctx._source.counter = event["count"]; }',
          'script_lang' => 'groovy',
          'script_type' => 'inline'
        })
        subject.register
        subject.multi_receive([LogStash::Event.new("counter" => 3 )])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "456", :refresh => true)
        expect(r["_source"]["counter"]).to eq(3)
      end

      it "should increment a counter with event/doc 'count' variable with indexed script" do
        @es.put_script lang: 'groovy', id: 'indexed_update', body: { script: 'ctx._source.counter += event["count"]' }
        subject = get_es_output({
          'document_id' => "123",
          'script' => 'indexed_update',
          'script_lang' => 'groovy',
          'script_type' => 'indexed'
        })
        subject.register
        subject.multi_receive([LogStash::Event.new("count" => 4 )])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "123", :refresh => true)
        expect(r["_source"]["counter"]).to eq(5)
      end
    end

    context "when update with upsert" do
      it "should create new documents with provided upsert" do
        subject = get_es_output({ 'document_id' => "456", 'upsert' => '{"message": "upsert message"}' })
        subject.register
        subject.multi_receive([LogStash::Event.new("message" => "sample message here")])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "456", :refresh => true)
        expect(r["_source"]["message"]).to eq('upsert message')
      end

      it "should create new documents with event/doc as upsert" do
        subject = get_es_output({ 'document_id' => "456", 'doc_as_upsert' => true })
        subject.register
        subject.multi_receive([LogStash::Event.new("message" => "sample message here")])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "456", :refresh => true)
        expect(r["_source"]["message"]).to eq('sample message here')
      end

      it "should fail on documents with event/doc as upsert at external version" do
        subject = get_es_output({ 'document_id' => "456", 'doc_as_upsert' => true, 'version' => 999, "version_type" => "external" })
        expect { subject.register }.to raise_error(LogStash::ConfigurationError)
      end
    end

    context "updates with scripted upsert" do
      it "should create new documents with upsert content" do
        subject = get_es_output({ 'document_id' => "456", 'script' => 'scripted_update', 'upsert' => '{"message": "upsert message"}', 'script_type' => 'file' })
        subject.register
        subject.multi_receive([LogStash::Event.new("message" => "sample message here")])
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "456", :refresh => true)
        expect(r["_source"]["message"]).to eq('upsert message')
      end

      it "should create new documents with event/doc as script params" do
        subject = get_es_output({ 'document_id' => "456", 'script' => 'scripted_upsert', 'scripted_upsert' => true, 'script_type' => 'file' })
        subject.register
        subject.multi_receive([LogStash::Event.new("counter" => 1)])
        @es.indices.refresh
        r = @es.get(:index => 'logstash-update', :type => 'doc', :id => "456", :refresh => true)
        expect(r["_source"]["counter"]).to eq(1)
      end
    end
  end
end