package service

import (
	"cybertron/internal/client/elastic"
	"cybertron/pkg/log"
	"cybertron/pkg/utils"
	"github.com/gin-gonic/gin"
	"net/http"
	"strconv"
)

type SearchService struct {
	logger              *log.Logger
	elasticSearchClient *elastic.ElasticSearchClient
}

func NewSearchService(logger *log.Logger, elasticSearchClient *elastic.ElasticSearchClient) *SearchService {
	return &SearchService{
		logger:              logger,
		elasticSearchClient: elasticSearchClient,
	}
}

func (s *SearchService) Search(c *gin.Context) {

}

func (s *SearchService) GetErrorDetails(c *gin.Context) {
	error_hash := c.Query("error_hash")
	project_id := c.Query("project_id")
	from := c.DefaultQuery("from", "0")

	fromInNumber, err := strconv.ParseInt(from, 10, 64)

	if err != nil {
		c.JSON(http.StatusBadRequest, "from should be a number")
		return
	}

	term_query := utils.CreateTermSubQuery("error_hash", error_hash)
	project_id_term_query := utils.CreateTermSubQuery("project_id", project_id)
	mustQuery := utils.CreateMustQuery(term_query, project_id_term_query)
	boolQuery := utils.CreateBoolQuery(mustQuery)
	search_query := utils.CreateSearchQuery(boolQuery)
	size_query := utils.CreateSizeQuery(1)
	sort_query := utils.CreateSortQuery("created_at", "desc", "")
	after_query := utils.CreateFromQuery(fromInNumber)
	es_query := utils.CreateEsQuery(search_query, size_query, sort_query, after_query)

	searchRequestformatted := es_query
	fields := []string{"error", "significant_stack", "title"}

	response, _, total, err := s.elasticSearchClient.SearchDocuments(searchRequestformatted, fields)

	if err != nil {
		utils.ErrorResponse(c, "Failed to search please try again later")
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"results": response,
		"total":   total,
	})
}

func (s *SearchService) GetSearchResults(c *gin.Context) {
	projectId := c.Query("project_id")
	size := c.DefaultQuery("size", "10")
	search_key := c.DefaultQuery("search_key", "")
	sizeInNumber, sizeParseError := strconv.Atoi(size)
	if sizeParseError != nil {
		c.JSON(http.StatusBadRequest, "size should be a number")
		return
	}
	size_query := utils.CreateSizeQuery(int64(sizeInNumber))

	term_query := utils.CreateTermSubQuery("project_id", projectId)
	multiMatchQuery := utils.CreateMultiMatchQuery(search_key, "error", "title", "extra.metadata")
	should_query := utils.CreateMustQuery(term_query, multiMatchQuery)
	boolQuery := utils.CreateBoolQuery(should_query)
	search_query := utils.CreateSearchQuery(boolQuery)
	source_query := utils.CreateSourceQuery("error")
	finalQuery := utils.CreateEsQuery(source_query, search_query, size_query)
	fields := []string{"error", "significant_stack", "title"}
	var res, _, total, err = s.elasticSearchClient.SearchDocuments(finalQuery, fields)
	if err != nil {
		utils.ErrorResponse(c, "Failed to search please try again later")
		return
	}
	//println("final query %s", finalQuery)
	c.JSON(http.StatusOK, gin.H{
		"results": res,
		"total":   total,
	})
}

func (s *SearchService) GetErrorListV2(c *gin.Context) {
	projectId := c.Query("project_id")
	sortKey := c.DefaultQuery("sort_key", "lastSeen")
	var orderQuery = ""

	if sortKey == "lastSeen" {
		orderQuery = utils.CreateOrderQuery("last_seen", "desc")
	}
	if sortKey == "firstSeen" {
		orderQuery = utils.CreateOrderQuery("first_seen", "desc")
	}
	if sortKey == "count" {
		orderQuery = utils.CreateOrderQuery("_count", "desc")
	}
	//size := c.DefaultQuery("size", "100000")
	term_query := utils.CreateTermSubQuery("project_id", projectId)
	search_query := utils.CreateSearchQuery(term_query)
	size_query := utils.CreateSizeQuery(0)
	top_hits_aggs_name_query := utils.BuildAggregationQuery("unique_errors", utils.CreateTopHitsAggsQuery(1, []string{"error", "significant_stack", "created_at", "error_hash"}))
	last_seen_aggs_query := utils.BuildAggregationQuery("last_seen", utils.CreateMaxAggregationQuery("created_at"))
	first_seen_aggs_query := utils.BuildAggregationQuery("first_seen", utils.CreateMinAggregationQuery("created_at"))
	top_hits_aggs_query := utils.CreateAggregationQuery(top_hits_aggs_name_query, last_seen_aggs_query, first_seen_aggs_query)
	term_aggs_query := utils.CreateTermsAggregationQuery("error_hash", 100000, orderQuery)
	terms_aggs_query_with_name := utils.BuildAggregationQuery("errors_by_hash", term_aggs_query, top_hits_aggs_query)
	final_terms_aggs_query := utils.CreateAggregationQuery(terms_aggs_query_with_name)
	final_query := utils.CreateEsQuery(search_query, size_query, final_terms_aggs_query)

	println("final query %v", final_query)
	fields := []string{"error", "significant_stack", "title"}
	var _, aggs, total, err = s.elasticSearchClient.SearchDocuments(final_query, fields)

	if err != nil {
		utils.ErrorResponse(c, "search failed please try again")
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"results": aggs,
		"total":   total,
	})

}

func (s *SearchService) GetErrorList(c *gin.Context) {
	//todo pagination and aggregation of errors
	projectId := c.Query("project_id")
	size := c.DefaultQuery("size", "10")
	afterKey := c.DefaultQuery("after_key", "")
	sortKey := c.DefaultQuery("sort_key", "lastSeen")

	sizeInNumber, sizeParseError := strconv.Atoi(size)

	if sizeParseError != nil {
		c.JSON(http.StatusBadRequest, "size should be a number")
		return
	}

	term_query := utils.CreateTermSubQuery("project_id", projectId)
	search_query := utils.CreateSearchQuery(term_query)
	size_query := utils.CreateSizeQuery(0)
	top_hits_aggs_name_query := utils.BuildAggregationQuery("unique_errors", utils.CreateTopHitsAggsQuery(1, []string{"error", "significant_stack", "created_at", "error_hash"}))
	last_seen_aggs_query := utils.BuildAggregationQuery("last_seen", utils.CreateMaxAggregationQuery("created_at"))
	first_seen_aggs_query := utils.BuildAggregationQuery("first_seen", utils.CreateMinAggregationQuery("created_at"))
	sortQuery := utils.CreateSortQuery("last_seen", "desc", "")

	if sortKey == "lastSeen" {
		sortQuery = utils.CreateSortQuery("last_seen", "desc", "")
	}
	if sortKey == "firstSeen" {
		sortQuery = utils.CreateSortQuery("first_seen", "desc", "")
	}
	if sortKey == "count" {
		sortQuery = utils.CreateSortQuery("_count", "desc", "")
	}
	customSortQuery := utils.CreateCustomQueryWithBraces("bucket_sort", sortQuery)
	customFinalSortQuery := utils.CreateCustomQueryWithBraces("sorting", customSortQuery)
	top_hits_aggs_query := utils.CreateAggregationQuery(top_hits_aggs_name_query, last_seen_aggs_query, first_seen_aggs_query, customFinalSortQuery)

	//building composite aggregation
	composite_term_query := utils.CreateTermsAggregationQueryWithoutSize("error_hash")
	composite_aggregation_query_without_name := utils.CreateCompositeAggsQuery(sizeInNumber, "error_hash", "error_hash", afterKey, composite_term_query)
	composite_aggs_query := utils.BuildAggregationQuery("errors_by_hash", composite_aggregation_query_without_name, top_hits_aggs_query)

	compositeAggsQuery := utils.CreateAggregationQuery(composite_aggs_query)

	final_query := utils.CreateEsQuery(search_query, size_query, compositeAggsQuery)
	//s.logger.Info("%s", zap.String("final query", final_query))

	fields := []string{"error", "significant_stack", "title"}
	var _, aggs, total, err = s.elasticSearchClient.SearchDocuments(final_query, fields)

	if err != nil {
		utils.ErrorResponse(c, "search failed please try again")
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"results": aggs,
		"total":   total,
	})

}