package main

import (
	"context"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"github.com/olivere/elastic/v7"
	util "jygit.jydev.jianyu360.cn/data_processing/common_utils"
	"log"
	"sort"
	"strconv"

	//"sort"
	"strings"
	"time"
)

func SearchProjectFullScoring(client *elastic.Client, target InputData, projectName, areacode, publish string, targetScore float64) ([]map[string]interface{}, error) {
	seenIDs := make(map[string]*elastic.SearchHit)

	province, city := "", ""
	if areacode != "" {
		code := areacode[:6]
		where := map[string]interface{}{
			"code": code,
		}

		res, _ := MgoQY.FindOne("address_new_2020", where)
		province = util.ObjToString((*res)["province"])
		city = util.ObjToString((*res)["city"])
	}

	target.Area = province
	target.City = city
	fmt.Println(province, city)
	projectName = RemoveInvisibleChars(projectName)
	projectName = FilterGeneric(projectName)

	// 1. 精准查询
	preciseHits, err := searchPrecise(client, projectName, province, city, publish, 20)
	if err != nil {
		return nil, err
	}
	for _, hit := range preciseHits {
		if _, exists := seenIDs[hit.Id]; !exists {
			seenIDs[hit.Id] = hit
		}
	}

	// 2. 分词查询（
	tokenHits, err := searchByToken(client, projectName, province, city, publish, 20)
	if err != nil {
		return nil, err
	}
	for _, hit := range tokenHits {
		if _, exists := seenIDs[hit.Id]; !exists {
			seenIDs[hit.Id] = hit
		}
	}

	// 3. common 查询
	commonHits, err := searchCommon(client, projectName, province, city, publish, 10)
	if err != nil {
		return nil, err
	}
	for _, hit := range commonHits {
		if _, exists := seenIDs[hit.Id]; !exists {
			seenIDs[hit.Id] = hit
		}
	}

	// 4. 合并 + 打分增强
	var results []map[string]interface{}
	//nameScore := computeNameScore(projectName)
	var allCandidates = []EsDocument{}

	for id, hit := range seenIDs {
		var doc map[string]interface{}
		if err := json.Unmarshal(hit.Source, &doc); err != nil {
			continue
		}

		// 从 Mongo 读取 detail 字段用于后续 buyer 过滤
		bidd, _ := MgoB.FindById("bidding", id, nil)
		detail := util.ObjToString((*bidd)["detail"])

		doc["detail"] = detail
		/**
		"id", "title", "projectname", "projectcode", "bidamount", "area", "city",
					"toptype", "subtype", "buyer", "budget", "buyerperson", "buyertel",
					"s_winner", "winnertel", "agency", "publishtime"
		*/
		candidate := EsDocument{
			Id:          util.ObjToString(doc["id"]),
			Title:       util.ObjToString(doc["title"]),
			Projectname: util.ObjToString(doc["projectname"]),
			Toptype:     util.ObjToString(doc["toptype"]),
			Subtype:     util.ObjToString(doc["subtype"]),
			Area:        util.ObjToString(doc["area"]),
			City:        util.ObjToString(doc["city"]),
			Buyer:       util.ObjToString(doc["buyer"]),
			SWinner:     util.ObjToString(doc["s_winner"]),
			Bidamount:   util.Float64All(doc["bidamount"]),
			Publishtime: util.Int64All(doc["publishtime"]),
			Agency:      util.ObjToString(doc["agency"]),
			WinnerTel:   util.ObjToString(doc["winnertel"]),
			BuyerTel:    util.ObjToString(doc["buyertel"]),
			BuyerPerson: util.ObjToString(doc["buyerperson"]),
			Budget:      util.Float64All(doc["budget"]),
		}

		score := calculateConfidenceScore(target, candidate)
		if targetScore > 0 {
			if score >= targetScore {
				candidate.Score, _ = strconv.ParseFloat(fmt.Sprintf("%.2f", score), 64)
				allCandidates = append(allCandidates, candidate)
			}
		} else {
			candidate.Score, _ = strconv.ParseFloat(fmt.Sprintf("%.2f", score), 64)
			allCandidates = append(allCandidates, candidate)
		}
	}

	// 排序（降序）
	sort.SliceStable(allCandidates, func(i, j int) bool {
		return allCandidates[i].Score > allCandidates[j].Score
	})

	for _, doc := range allCandidates {
		item := map[string]interface{}{
			"id":          doc.Id,
			"title":       doc.Title,
			"projectname": doc.Projectname,
			"projectcode": doc.ProjectCode,
			"toptype":     doc.Toptype,
			"subtype":     doc.Subtype,
			"area":        doc.Area,
			"city":        doc.City,
			"buyer":       doc.Buyer,
			"budget":      doc.Budget,
			"bidamount":   doc.Bidamount,
			"winner":      doc.Winner,
			"detail":      doc.Detail,
			"publishtime": doc.Publishtime,
			"agency":      doc.Agency,
			"s_winner":    doc.SWinner,
			"winnertel":   doc.WinnerTel,
			"buyertel":    doc.BuyerTel,
			"buyerperson": doc.BuyerPerson,
			"score":       doc.Score,
		}
		results = append(results, item)
	}
	return results, nil
}

func searchPrecise(client *elastic.Client, projectName, province, city, publish string, maxResults int) ([]*elastic.SearchHit, error) {
	fieldsToTry := []string{"projectname.pname", "title", "detail"}
	filtersToTry := [][]elastic.Query{
		{elastic.NewTermsQuery("subtype", "中标", "成交", "合同", "单一")},
		{elastic.NewTermsQuery("toptype", "招标", "预告", "采购意向")},
		{elastic.NewTermsQuery("toptype", "拟建")},
	}
	var allResults []*elastic.SearchHit
	seenIDs := make(map[string]bool)

	// 解析发布时间
	var t time.Time
	var err error
	if publish != "" {
		t, err = time.Parse("200601", publish)
		if err != nil {
			log.Println("时间解析失败:", err)
		}
	}

	for _, field := range fieldsToTry {
		var dateRangeStart, dateRangeEnd int64
		if !t.IsZero() {
			if field == "detail" {
				dateRangeStart, dateRangeEnd = getYearRange(t, 60)
			} else {
				dateRangeStart, dateRangeEnd = getYearRange(t, 36)
			}
		}

		for _, filters := range filtersToTry {
			var queries []*elastic.BoolQuery

			if field == "detail" {
				// detail 只加时间 + filter
				query := elastic.NewBoolQuery()
				if province != "" {
					query = query.Must(elastic.NewTermQuery("area", province))
				}
				query = query.Must(elastic.NewMultiMatchQuery(projectName, field).Type("phrase"))
				query = query.Filter(filters...)
				if !t.IsZero() {
					query = query.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
				}
				queries = append(queries, query)

			} else {
				// 1. 省 + 市 查询
				if province != "" && city != "" {
					query1 := elastic.NewBoolQuery()
					query1 = query1.Must(elastic.NewMultiMatchQuery(projectName, field).Type("phrase"))
					query1 = query1.Must(elastic.NewTermQuery("area", province))
					query1 = query1.Must(elastic.NewTermQuery("city", city))
					query1 = query1.Filter(filters...)
					if !t.IsZero() {
						query1 = query1.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
					}
					queries = append(queries, query1)
				}
				// 2. 仅省份（城市为空或不同）
				if province != "" {
					query2 := elastic.NewBoolQuery()
					query2 = query2.Must(elastic.NewMultiMatchQuery(projectName, field).Type("phrase"))
					query2 = query2.Must(elastic.NewTermQuery("area", province))
					query2 = query2.Filter(filters...)
					if !t.IsZero() {
						query2 = query2.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
					}
					queries = append(queries, query2)
				}

				//// 3. 不限制省市
				//if province == "" {
				//	query3 := elastic.NewBoolQuery()
				//	query3 = query3.Must(elastic.NewMultiMatchQuery(projectName, field).Type("phrase"))
				//	query3 = query3.Filter(filters...)
				//	if !t.IsZero() {
				//		query3 = query3.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
				//	}
				//	queries = append(queries, query3)
				//}
			}

			for _, query := range queries {
				fetchFields := elastic.NewFetchSourceContext(true).Include(
					"id", "title", "projectname", "projectcode", "bidamount", "area", "city",
					"toptype", "subtype", "buyer", "budget", "buyerperson", "buyertel",
					"s_winner", "winnertel", "agency", "publishtime")

				searchResult, err := client.Search().
					Index("bidding").
					Query(query).
					Size(maxResults).
					FetchSourceContext(fetchFields).
					Do(context.Background())
				if err != nil {
					return nil, err
				}

				for _, hit := range searchResult.Hits.Hits {
					if !seenIDs[hit.Id] {
						seenIDs[hit.Id] = true
						allResults = append(allResults, hit)
					}
				}
			}
		}

		// detail 的命中足够就提前结束
		if field == "detail" && len(allResults) > maxResults {
			break
		}
	}

	return allResults, nil
}

func searchByToken(client *elastic.Client, projectName, province, city, publish string, maxResults int) ([]*elastic.SearchHit, error) {
	fieldsToTry := []string{"projectname.pname", "title", "detail"}
	filtersToTry := [][]elastic.Query{
		{elastic.NewTermsQuery("subtype", "中标", "成交", "合同", "单一")},
		{elastic.NewTermsQuery("toptype", "招标", "预告", "采购意向")},
		{elastic.NewTermsQuery("toptype", "拟建")},
	}

	// 解析时间
	var t time.Time
	var err error
	if publish != "" {
		t, err = time.Parse("200601", publish)
		if err != nil {
			log.Println("时间解析失败:", err)
		}
	}

	// 分词处理
	analyzeResp, err := client.IndexAnalyze().
		Index("bidding").
		Analyzer("ik_smart").
		Text(projectName).
		Do(context.Background())
	if err != nil {
		return nil, err
	}

	var tokens []string
	for _, token := range analyzeResp.Tokens {
		tokens = append(tokens, token.Token)
	}
	if len(tokens) == 0 {
		return nil, fmt.Errorf("no tokens found from ik_smart")
	}
	queryText := strings.Join(tokens, " ")

	// 指定返回字段
	fetchFields := elastic.NewFetchSourceContext(true).Include(
		"id", "title", "projectname", "projectcode", "bidamount", "area", "city",
		"toptype", "subtype", "buyer", "budget", "buyerperson", "buyertel",
		"s_winner", "winnertel", "agency", "publishtime")

	var allHits []*elastic.SearchHit
	seen := make(map[string]bool)

	for _, field := range fieldsToTry {
		var dateRangeStart, dateRangeEnd int64
		if !t.IsZero() {
			if field == "detail" {
				dateRangeStart, dateRangeEnd = getYearRange(t, 60)
			} else {
				dateRangeStart, dateRangeEnd = getYearRange(t, 36)
			}
		}

		for _, filters := range filtersToTry {
			var queries []*elastic.BoolQuery

			if field == "detail" {
				query := elastic.NewBoolQuery()
				if province != "" {
					query = query.Must(elastic.NewTermQuery("area", province))
				}
				//query = query.Must(elastic.NewMatchQuery(field, queryText)).
				//	Filter(filters...)

				query = query.
					Must(
						elastic.NewMultiMatchQuery(queryText, field).
							MinimumShouldMatch("100%"),
					).
					Filter(filters...)
				if !t.IsZero() {
					query = query.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
				}
				queries = append(queries, query)
			} else {
				// 省+市
				if province != "" && city != "" {
					q := elastic.NewBoolQuery().
						Must(elastic.NewMatchQuery(field, queryText)).
						Must(elastic.NewTermQuery("area", province)).
						Must(elastic.NewTermQuery("city", city)).
						Filter(filters...)
					if !t.IsZero() {
						q = q.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
					}
					queries = append(queries, q)
				}
				// 仅省
				if province != "" {
					q := elastic.NewBoolQuery().
						Must(elastic.NewMatchQuery(field, queryText)).
						Must(elastic.NewTermQuery("area", province)).
						Filter(filters...)
					if !t.IsZero() {
						q = q.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
					}
					queries = append(queries, q)
				}
				//// 无省市
				//q := elastic.NewBoolQuery().
				//	Must(elastic.NewMatchQuery(field, queryText)).
				//	Filter(filters...)
				//if !t.IsZero() {
				//	q = q.Must(elastic.NewRangeQuery("publishtime").Gte(dateRangeStart).Lt(dateRangeEnd))
				//}
				//queries = append(queries, q)
			}

			for _, query := range queries {
				searchResult, err := client.Search().
					Index("bidding").
					Query(query).
					Size(maxResults).
					FetchSourceContext(fetchFields).
					Do(context.Background())
				if err != nil {
					continue
				}

				for _, hit := range searchResult.Hits.Hits {
					if !seen[hit.Id] {
						seen[hit.Id] = true
						allHits = append(allHits, hit)
						if len(allHits) >= maxResults {
							return allHits, nil
						}
					}
				}
			}
		}

		if field == "detail" && len(allHits) >= maxResults {
			break
		}
	}

	return allHits, nil
}

func searchCommon(client *elastic.Client, projectName, province, city, publish string, maxResults int) ([]*elastic.SearchHit, error) {
	fields := []string{"projectname.pname", "title", "detail"}
	var t time.Time
	var err error
	if publish != "" {
		t, err = time.Parse("200601", publish)
		if err != nil {
			log.Println("时间解析失败:", err)
		}
	}

	var allHits []*elastic.SearchHit
	seen := make(map[string]bool)

	fetchFields := elastic.NewFetchSourceContext(true).Include(
		"id", "title", "projectname", "projectcode", "bidamount", "area", "city",
		"toptype", "subtype", "buyer", "budget", "buyerperson", "buyertel",
		"s_winner", "winnertel", "agency", "publishtime")

	for _, field := range fields {
		var dateRangeStart, dateRangeEnd int64
		if !t.IsZero() {
			if field == "detail" {
				dateRangeStart, dateRangeEnd = getYearRange(t, 60)
			} else {
				dateRangeStart, dateRangeEnd = getYearRange(t, 36)
			}
		}

		var queries []map[string]interface{}

		commonQuery := func(f string, boost float64) map[string]interface{} {
			return map[string]interface{}{
				"common": map[string]interface{}{
					f: map[string]interface{}{
						"query":             projectName,
						"cutoff_frequency":  0.01,
						"low_freq_operator": "and",
						"boost":             boost,
					},
				},
			}
		}

		if field == "detail" {
			// 只做普通匹配 + 时间
			boolQuery := map[string]interface{}{}
			if province != "" {
				boolQuery = map[string]interface{}{
					"bool": map[string]interface{}{
						"must": []interface{}{
							commonQuery(field, 0.1),
							map[string]interface{}{"term": map[string]interface{}{"area": province}},
						},
					},
				}
			} else {
				boolQuery = map[string]interface{}{
					"bool": map[string]interface{}{
						"must": []interface{}{
							commonQuery(field, 0.1),
						},
					},
				}
			}

			if !t.IsZero() {
				boolQuery["bool"].(map[string]interface{})["filter"] = []interface{}{
					map[string]interface{}{
						"range": map[string]interface{}{
							"publishtime": map[string]interface{}{
								"gte": dateRangeStart,
								"lt":  dateRangeEnd,
							},
						},
					},
				}
			}
			queries = append(queries, boolQuery)

		} else {
			// 1. 省+市
			if province != "" && city != "" {
				q := map[string]interface{}{
					"bool": map[string]interface{}{
						"must": []interface{}{
							commonQuery(field, 0.2),
							map[string]interface{}{"term": map[string]interface{}{"area": province}},
							map[string]interface{}{"term": map[string]interface{}{"city": city}},
						},
					},
				}
				if !t.IsZero() {
					q["bool"].(map[string]interface{})["filter"] = []interface{}{
						map[string]interface{}{
							"range": map[string]interface{}{
								"publishtime": map[string]interface{}{
									"gte": dateRangeStart,
									"lt":  dateRangeEnd,
								},
							},
						},
					}
				}
				queries = append(queries, q)
			}

			// 2. 仅省
			if province != "" {
				q := map[string]interface{}{
					"bool": map[string]interface{}{
						"must": []interface{}{
							commonQuery(field, 0.2),
							map[string]interface{}{"term": map[string]interface{}{"area": province}},
						},
					},
				}
				if !t.IsZero() {
					q["bool"].(map[string]interface{})["filter"] = []interface{}{
						map[string]interface{}{
							"range": map[string]interface{}{
								"publishtime": map[string]interface{}{
									"gte": dateRangeStart,
									"lt":  dateRangeEnd,
								},
							},
						},
					}
				}
				queries = append(queries, q)
			}

			//// 3. 不加省市
			//q := map[string]interface{}{
			//	"bool": map[string]interface{}{
			//		"must": []interface{}{
			//			commonQuery(field, 0.2),
			//		},
			//	},
			//}
			//if !t.IsZero() {
			//	q["bool"].(map[string]interface{})["filter"] = []interface{}{
			//		map[string]interface{}{
			//			"range": map[string]interface{}{
			//				"publishtime": map[string]interface{}{
			//					"gte": dateRangeStart,
			//					"lt":  dateRangeEnd,
			//				},
			//			},
			//		},
			//	}
			//}
			//queries = append(queries, q)
		}

		for _, q := range queries {
			// 编码 query 为 base64
			queryBytes, _ := json.Marshal(q)
			queryBase64 := base64.StdEncoding.EncodeToString(queryBytes)
			query := elastic.NewWrapperQuery(queryBase64)

			searchResult, err := client.Search().
				Index("bidding").
				Query(query).
				Size(maxResults).
				FetchSourceContext(fetchFields).
				Do(context.Background())
			if err != nil {
				log.Println("searchCommon 查询失败:", err)
				continue
			}

			for _, hit := range searchResult.Hits.Hits {
				if !seen[hit.Id] {
					seen[hit.Id] = true
					allHits = append(allHits, hit)
					if len(allHits) >= maxResults {
						return allHits, nil
					}
				}
			}
		}
	}

	return allHits, nil
}

// getYearRange calculates a date range of +/- 1 year from the base date.
func getYearRange(baseDate time.Time, m int) (start, end int64) {
	endTime := baseDate.AddDate(0, m, 0)
	startTime := baseDate.AddDate(0, -m, 0)
	return startTime.Unix(), endTime.Unix()
}