package es

import (
	"bytes"
	"context"
	"encoding/json"

	esclient "github.com/elastic/go-elasticsearch/v7"
	jsoniter "github.com/json-iterator/go"
)

type (
	defaultEsService interface {
		EsConnect() *esclient.Client
		EsCreateIndex()
		EsDeleteIndex()
		EsAddDoc()
		EsDeleteDoc()
		EsUpdateDoc()
		EsSearchDoc(index string, query map[string]interface{}, from int, size int) interface{}
	}
	EsService struct {
	}
)

var (
	EsServiceApp = new(EsService)
	logIndex     = "thoroughly_districts_xw"
)

func (e *EsService) EsConnect() *esclient.Client {
	cfg := esclient.Config{
		Addresses: []string{
			"http://10.1.1.124:9200",
			// "http://xxx.xxx.xxx.xxx:9200",
		},
		// Username: "elastic",
		// Password: "123456",
	}
	es, err := esclient.NewClient(cfg)
	if err != nil {
		panic(err)
	}
	return es
}

// 创建索引
func (e *EsService) EsCreateIndex() {

}

// 删除索引
func (e *EsService) EsDeleteIndex() {

}

// 添加文档
func (e *EsService) EsAddDoc() {

}

// 删除文档
func (e *EsService) EsDeleteDoc() {

}

// 更新文档
func (e *EsService) EsUpdateDoc() {

}

// 查询文档- map[string]interface{}
func (e *EsService) EsSearchDoc(ctx context.Context, query map[string]interface{}, from int, size int) (doc interface{}, err error) {
	es := e.EsConnect()
	// Build the request body.
	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(query); err != nil {
		// httpresult.ErrorResult("参数解析错误", err)
		return nil, err
	}
	// Perform the search request.
	res, err := es.Search(
		es.Search.WithContext(context.Background()),
		es.Search.WithIndex(logIndex),
		es.Search.WithBody(&buf),
		es.Search.WithTrackTotalHits(true),
		es.Search.WithPretty(),
		es.Search.WithFrom(from),
		es.Search.WithSize(size),
		// es.Search.WithSort("@timestamp:desc"),
	)

	if err != nil {
		// httpresult.ErrorResult("查询失败", err)
		return nil, err
	}
	defer res.Body.Close()
	result := map[string]interface{}{}
	jserr := jsoniter.NewDecoder(res.Body).Decode(&result)
	if jserr != nil {

		return nil, jserr
	}
	return result, nil
}

// 查询文档- muti string
func (e *EsService) EsSearchDocWithStr(ctx context.Context, query string, from int, size int) (doc interface{}, err error) {
	es := e.EsConnect()
	// Build the request body.
	// var buf bytes.Buffer
	// if err := json.NewEncoder(&buf).Encode(query); err != nil {
	// 	httpresult.ErrorResult("参数解析错误", err)
	// }
	// Perform the search request.
	// string query to io.Reader
	// query = `{"query":{"match_all":{}}}`
	var buf = bytes.NewBufferString(query)
	res, err := es.Search(
		es.Search.WithContext(context.Background()),
		es.Search.WithIndex(logIndex),
		es.Search.WithBody(buf),
		es.Search.WithTrackTotalHits(true),
		es.Search.WithPretty(),
		es.Search.WithFrom(from),
		es.Search.WithSize(size),
		// es.Search.WithSort("@timestamp:desc"),
	)

	if err != nil {
		// httpresult.ErrorResult("查询失败", err)
		return nil, err
	}
	defer res.Body.Close()
	result := map[string]interface{}{}
	jserr := jsoniter.NewDecoder(res.Body).Decode(&result)
	if jserr != nil {

		return nil, jserr
	}
	return result, nil
}