// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The 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 msgstream

import (
	"context"

	rmqimplserver "github.com/milvus-io/milvus/internal/mq/mqimpl/rocksmq/server"

	"github.com/apache/pulsar-client-go/pulsar"
	puslarmqwrapper "github.com/milvus-io/milvus/internal/mq/msgstream/mqwrapper/pulsar"
	rmqwrapper "github.com/milvus-io/milvus/internal/mq/msgstream/mqwrapper/rmq"
	"github.com/mitchellh/mapstructure"
)

// PmsFactory is a pulsar msgstream factory that implemented Factory interface(msgstream.go)
type PmsFactory struct {
	dispatcherFactory ProtoUDFactory
	// the following members must be public, so that mapstructure.Decode() can access them
	PulsarAddress  string
	ReceiveBufSize int64
	PulsarBufSize  int64
}

// SetParams is used to set parameters for PmsFactory
func (f *PmsFactory) SetParams(params map[string]interface{}) error {
	err := mapstructure.Decode(params, f)
	if err != nil {
		return err
	}
	return nil
}

// NewMsgStream is used to generate a new Msgstream object
func (f *PmsFactory) NewMsgStream(ctx context.Context) (MsgStream, error) {
	pulsarClient, err := puslarmqwrapper.NewClient(pulsar.ClientOptions{URL: f.PulsarAddress})
	if err != nil {
		return nil, err
	}
	return NewMqMsgStream(ctx, f.ReceiveBufSize, f.PulsarBufSize, pulsarClient, f.dispatcherFactory.NewUnmarshalDispatcher())
}

// NewTtMsgStream is used to generate a new TtMsgstream object
func (f *PmsFactory) NewTtMsgStream(ctx context.Context) (MsgStream, error) {
	pulsarClient, err := puslarmqwrapper.NewClient(pulsar.ClientOptions{URL: f.PulsarAddress})
	if err != nil {
		return nil, err
	}
	return NewMqTtMsgStream(ctx, f.ReceiveBufSize, f.PulsarBufSize, pulsarClient, f.dispatcherFactory.NewUnmarshalDispatcher())
}

// NewQueryMsgStream is used to generate a new QueryMsgstream object
func (f *PmsFactory) NewQueryMsgStream(ctx context.Context) (MsgStream, error) {
	return f.NewMsgStream(ctx)
}

// NewPmsFactory is used to generate a new PmsFactory object
func NewPmsFactory() Factory {
	f := &PmsFactory{
		dispatcherFactory: ProtoUDFactory{},
		ReceiveBufSize:    64,
		PulsarBufSize:     64,
	}
	return f
}

// RmsFactory is a rocksmq msgstream factory that implemented Factory interface(msgstream.go)
type RmsFactory struct {
	dispatcherFactory ProtoUDFactory
	// the following members must be public, so that mapstructure.Decode() can access them
	ReceiveBufSize int64
	RmqBufSize     int64
}

// SetParams is used to set parameters for RmsFactory
func (f *RmsFactory) SetParams(params map[string]interface{}) error {
	err := mapstructure.Decode(params, f)
	if err != nil {
		return err
	}
	return nil
}

// NewMsgStream is used to generate a new Msgstream object
func (f *RmsFactory) NewMsgStream(ctx context.Context) (MsgStream, error) {
	rmqClient, err := rmqwrapper.NewClientWithDefaultOptions()
	if err != nil {
		return nil, err
	}
	return NewMqMsgStream(ctx, f.ReceiveBufSize, f.RmqBufSize, rmqClient, f.dispatcherFactory.NewUnmarshalDispatcher())
}

// NewTtMsgStream is used to generate a new TtMsgstream object
func (f *RmsFactory) NewTtMsgStream(ctx context.Context) (MsgStream, error) {
	rmqClient, err := rmqwrapper.NewClientWithDefaultOptions()
	if err != nil {
		return nil, err
	}
	return NewMqTtMsgStream(ctx, f.ReceiveBufSize, f.RmqBufSize, rmqClient, f.dispatcherFactory.NewUnmarshalDispatcher())
}

// NewQueryMsgStream is used to generate a new QueryMsgstream object
func (f *RmsFactory) NewQueryMsgStream(ctx context.Context) (MsgStream, error) {
	rmqClient, err := rmqwrapper.NewClientWithDefaultOptions()
	if err != nil {
		return nil, err
	}
	return NewMqMsgStream(ctx, f.ReceiveBufSize, f.RmqBufSize, rmqClient, f.dispatcherFactory.NewUnmarshalDispatcher())
}

// NewRmsFactory is used to generate a new RmsFactory object
func NewRmsFactory() Factory {
	f := &RmsFactory{
		dispatcherFactory: ProtoUDFactory{},
		ReceiveBufSize:    1024,
		RmqBufSize:        1024,
	}

	rmqimplserver.InitRocksMQ()
	return f
}