// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package stream_test

import (
	"context"
	"fmt"
	"testing"

	g "github.com/onsi/ginkgo/v2"
	"github.com/onsi/gomega"

	"github.com/apache/skywalking-banyandb/banyand/metadata"
	"github.com/apache/skywalking-banyandb/banyand/metadata/service"
	obsservice "github.com/apache/skywalking-banyandb/banyand/observability/services"
	"github.com/apache/skywalking-banyandb/banyand/protector"
	"github.com/apache/skywalking-banyandb/banyand/query"
	"github.com/apache/skywalking-banyandb/banyand/queue"
	"github.com/apache/skywalking-banyandb/banyand/stream"
	"github.com/apache/skywalking-banyandb/pkg/logger"
	"github.com/apache/skywalking-banyandb/pkg/test"
	"github.com/apache/skywalking-banyandb/pkg/test/flags"
	teststream "github.com/apache/skywalking-banyandb/pkg/test/stream"
)

func TestStream(t *testing.T) {
	gomega.RegisterFailHandler(g.Fail)
	g.RunSpecs(t, "Stream Suite")
}

var _ = g.BeforeSuite(func() {
	gomega.Expect(logger.Init(logger.Logging{
		Env:   "dev",
		Level: flags.LogLevel,
	})).To(gomega.Succeed())
})

type preloadStreamService struct {
	metaSvc metadata.Service
}

func (p *preloadStreamService) Name() string {
	return "preload-stream"
}

func (p *preloadStreamService) PreRun(ctx context.Context) error {
	return teststream.PreloadSchema(ctx, p.metaSvc.SchemaRegistry())
}

type services struct {
	stream          stream.Service
	metadataService metadata.Service
	pipeline        queue.Queue
}

func setUp() (*services, func()) {
	// Init Pipeline
	pipeline := queue.Local()

	// Init Metadata Service
	metadataService, err := service.NewService()
	gomega.Expect(err).NotTo(gomega.HaveOccurred())
	gomega.Expect(err).NotTo(gomega.HaveOccurred())

	metricSvc := obsservice.NewMetricService(metadataService, pipeline, "test", nil)
	pm := protector.NewMemory(metricSvc)
	// Init Stream Service
	streamService, err := stream.NewService(metadataService, pipeline, metricSvc, pm, nil)
	gomega.Expect(err).NotTo(gomega.HaveOccurred())
	preloadStreamSvc := &preloadStreamService{metaSvc: metadataService}
	querySvc, err := query.NewService(context.TODO(), streamService, nil, nil, metadataService, pipeline, metricSvc, false)
	gomega.Expect(err).NotTo(gomega.HaveOccurred())
	var flags []string
	metaPath, metaDeferFunc, err := test.NewSpace()
	gomega.Expect(err).NotTo(gomega.HaveOccurred())
	schemaPorts, schemaPortsErr := test.AllocateFreePorts(1)
	gomega.Expect(schemaPortsErr).NotTo(gomega.HaveOccurred())
	flags = append(flags,
		"--schema-server-root-path="+metaPath,
		fmt.Sprintf("--schema-server-grpc-port=%d", schemaPorts[0]),
		"--schema-server-grpc-host=127.0.0.1",
	)
	rootPath, deferFunc, err := test.NewSpace()
	gomega.Expect(err).NotTo(gomega.HaveOccurred())
	flags = append(flags, "--stream-root-path="+rootPath, "--stream-max-merge-parts=2", "--stream-min-merge-multiplier=1")
	moduleDeferFunc := test.SetupModules(
		flags,
		pipeline,
		metadataService,
		preloadStreamSvc,
		streamService,
		querySvc,
	)
	return &services{
			stream:          streamService,
			metadataService: metadataService,
			pipeline:        pipeline,
		}, func() {
			moduleDeferFunc()
			metaDeferFunc()
			deferFunc()
		}
}
