// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed 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 indexservice

import (
	"path"
	"strconv"
	"sync"

	"github.com/milvus-io/milvus/internal/log"
	"github.com/milvus-io/milvus/internal/util/paramtable"
)

type ParamTable struct {
	paramtable.BaseTable

	Address string
	Port    int

	MasterAddress string

	EtcdAddress  string
	KvRootPath   string
	MetaRootPath string

	MinIOAddress         string
	MinIOAccessKeyID     string
	MinIOSecretAccessKey string
	MinIOUseSSL          bool
	MinioBucketName      string

	Log log.Config
}

var Params ParamTable
var once sync.Once

func (pt *ParamTable) Init() {
	once.Do(func() {
		pt.BaseTable.Init()
		pt.initLogCfg()
		pt.initEtcdAddress()
		pt.initMasterAddress()
		pt.initMetaRootPath()
		pt.initKvRootPath()
		pt.initMinIOAddress()
		pt.initMinIOAccessKeyID()
		pt.initMinIOSecretAccessKey()
		pt.initMinIOUseSSL()
		pt.initMinioBucketName()
	})
}

func (pt *ParamTable) initEtcdAddress() {
	addr, err := pt.Load("_EtcdAddress")
	if err != nil {
		panic(err)
	}
	pt.EtcdAddress = addr
}

func (pt *ParamTable) initMetaRootPath() {
	rootPath, err := pt.Load("etcd.rootPath")
	if err != nil {
		panic(err)
	}
	subPath, err := pt.Load("etcd.metaSubPath")
	if err != nil {
		panic(err)
	}
	pt.MetaRootPath = rootPath + "/" + subPath
}

func (pt *ParamTable) initKvRootPath() {
	rootPath, err := pt.Load("etcd.rootPath")
	if err != nil {
		panic(err)
	}
	subPath, err := pt.Load("etcd.kvSubPath")
	if err != nil {
		panic(err)
	}
	pt.KvRootPath = rootPath + "/" + subPath
}

func (pt *ParamTable) initMasterAddress() {
	ret, err := pt.Load("_MasterAddress")
	if err != nil {
		panic(err)
	}
	pt.MasterAddress = ret
}

func (pt *ParamTable) initMinIOAddress() {
	ret, err := pt.Load("_MinioAddress")
	if err != nil {
		panic(err)
	}
	pt.MinIOAddress = ret
}

func (pt *ParamTable) initMinIOAccessKeyID() {
	ret, err := pt.Load("minio.accessKeyID")
	if err != nil {
		panic(err)
	}
	pt.MinIOAccessKeyID = ret
}

func (pt *ParamTable) initMinIOSecretAccessKey() {
	ret, err := pt.Load("minio.secretAccessKey")
	if err != nil {
		panic(err)
	}
	pt.MinIOSecretAccessKey = ret
}

func (pt *ParamTable) initMinIOUseSSL() {
	ret, err := pt.Load("minio.useSSL")
	if err != nil {
		panic(err)
	}
	pt.MinIOUseSSL, err = strconv.ParseBool(ret)
	if err != nil {
		panic(err)
	}
}

func (pt *ParamTable) initMinioBucketName() {
	bucketName, err := pt.Load("minio.bucketName")
	if err != nil {
		panic(err)
	}
	pt.MinioBucketName = bucketName
}

func (pt *ParamTable) initLogCfg() {
	pt.Log = log.Config{}
	format, err := pt.Load("log.format")
	if err != nil {
		panic(err)
	}
	pt.Log.Format = format
	level, err := pt.Load("log.level")
	if err != nil {
		panic(err)
	}
	pt.Log.Level = level
	devStr, err := pt.Load("log.dev")
	if err != nil {
		panic(err)
	}
	dev, err := strconv.ParseBool(devStr)
	if err != nil {
		panic(err)
	}
	pt.Log.Development = dev
	pt.Log.File.MaxSize = pt.ParseInt("log.file.maxSize")
	pt.Log.File.MaxBackups = pt.ParseInt("log.file.maxBackups")
	pt.Log.File.MaxDays = pt.ParseInt("log.file.maxAge")
	rootPath, err := pt.Load("log.file.rootPath")
	if err != nil {
		panic(err)
	}
	if len(rootPath) != 0 {
		pt.Log.File.Filename = path.Join(rootPath, "indexservice.log")
	} else {
		pt.Log.File.Filename = ""
	}
}