Chart calculation : GWM

main.go

@@ -605,64 +605,22 @@ func main() {
 						cardLogo,
 					)
 				}
-
+				// log.Println("Gowtham", chartData)
 				cResRaw := utils.ProcessChartData(chartData, languageSourceConverted, langKey)
-
-				// Convert cResRaw ([]map[string]interface{}) to []utils.Observation
-				var cRes []utils.Observation
-				cResJSON, err := json.Marshal(cResRaw)
-				if err != nil {
-					fmt.Println("Error encoding chart data:", err)
-				}
-				err = json.Unmarshal(cResJSON, &cRes)
-				if err != nil {
-					fmt.Println("Error decoding chart data:", err)
-				}
-
-				// card data calculation
-				var cardResults []map[string]string
-				if record.GetString("is_chart") == "false" {
-
-					// Extract `card_type` JSON from `record.Get("card_type")`
-					requestData := record.Get("card_type_json")
-					requestJSON, err := json.Marshal(requestData) // Convert interface{} to JSON string
-					if err != nil {
-						fmt.Println("Error encoding request data:", err)
-						os.Exit(1)
-					}
-
-					// Decode JSON into an array of `utils.Request`
-					var requests []utils.Request
-					err = json.Unmarshal(requestJSON, &requests)
-					if err != nil {
-						fmt.Println("Error decoding request data:", err)
-						os.Exit(1)
-					}
-
-					// Process each request and store results
-					for _, req := range requests {
-						result, err := utils.Calculate(cRes, req)
-						if err != nil {
-							fmt.Println("Error processing data:", err)
-							continue // Skip this request and move to the next
-						}
-						cardResults = append(cardResults, result)
-					}
-
-				}
-
+				log.Println("Gowtham", "loop")
+				//responce data structure
 				chartHeadingKey := "chart_heading_" + language
 				tabHeadingKey := "tab_heading_" + language
 				// Correct conditional assignment for "response"
 				recordResult := map[string]interface{}{
-					"url":        apiURL,
-					"dataset":    record.GetString("dataset"),
-					"main_id":    record.GetString("main_id"),
-					"sub_id":     record.GetString("sub_id"),
-					"kpi":        record.GetString("kpi"),
-					"is_chart":   record.GetString("is_chart"),
-					"chart_type": record.GetString("chart_type"),
-					// "response":      record.GetString("is_chart") = true cRes : cardResults,
+					"url":             apiURL,
+					"dataset":         record.GetString("dataset"),
+					"main_id":         record.GetString("main_id"),
+					"sub_id":          record.GetString("sub_id"),
+					"kpi":             record.GetString("kpi"),
+					"is_chart":        record.GetString("is_chart"),
+					"chart_type":      record.GetString("chart_type"),
+					"response":        cResRaw,
 					"group_by":        record.GetString("group_by"),
 					"chart_heading":   record.GetString(chartHeadingKey),
 					"tab_heading":     record.GetString(tabHeadingKey),
@@ -673,10 +631,75 @@ func main() {
 					"tab_order":       record.GetString("tab_order"),
 					"chart_type_json": record.Get("chart_type_json"),
 				}
-				if record.GetString("is_chart") == "true" {
-					recordResult["response"] = cResRaw
-				} else {
+
+				// card data calculation
+				// Convert cResRaw ([]map[string]interface{}) to []utils.Observation
+				var cRes []utils.Observation
+				cResJSON, err := json.Marshal(cResRaw)
+				if err != nil {
+					fmt.Println("Error encoding chart data:", err)
+				}
+				err = json.Unmarshal(cResJSON, &cRes)
+				if err != nil {
+					fmt.Println("Error decoding chart data:", err)
+				}
+				var cardResults []map[string]string
+				if record.GetString("is_chart") == "false" {
+
+					// Extract `card_type` JSON from `record.Get("card_type")`
+					requestData := record.Get("card_type_json")
+					requestJSON, err := json.Marshal(requestData) // Convert interface{} to JSON string
+					if err != nil {
+						fmt.Println("Error encoding request data:", err)
+					}
+
+					// Decode JSON into an array of `utils.Request`
+					var requests []utils.CardCalculationRequest
+					err = json.Unmarshal(requestJSON, &requests)
+					if err != nil {
+						fmt.Println("Error decoding request data:", err)
+					}
+
+					// Process each request and store results
+					for _, req := range requests {
+						result, err := utils.CardCalculation(cRes, req)
+						if err != nil {
+							fmt.Println("Error processing data:", err)
+							continue // Skip this request and move to the next
+						}
+						cardResults = append(cardResults, result)
+					}
+
 					recordResult["response"] = cardResults
+
+				} else {
+
+					if record.GetString("custom_calculation") == "false" {
+						recordResult["response"] = cResRaw
+					} else {
+
+						customCalculationReq := record.Get("chart_custom_calculation_json")
+
+						var chartCustomCalculationRequest utils.ChartCalculationRequest
+
+						jsonData, err := json.Marshal(customCalculationReq)
+						if err != nil {
+							log.Println("Error marshaling to JSON:", err)
+						}
+
+						err = json.Unmarshal(jsonData, &chartCustomCalculationRequest)
+						if err != nil {
+							log.Println("Error unmarshalling JSON:", err)
+						}
+						customResult, err := utils.CalculateGroupedSum(cRes, chartCustomCalculationRequest)
+						if err != nil {
+							fmt.Println("Error:", err)
+						}
+
+						recordResult["response"] = customResult
+
+					}
+
 				}
 
 				// Add the result to the aggregated response

utils/card_calculation.go

@@ -1,10 +1,10 @@
-// utils/calculations.go
 package utils
 
 import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"math"
 	"sort"
 	"strconv"
 )
@@ -17,7 +17,7 @@ type Observation struct {
 	} `json:"ObsValue"`
 }
 
-type Request struct {
+type CardCalculationRequest struct {
 	Formula      string `json:"formula"`
 	RecordCount  string `json:"record_count"`
 	RecodeIndex  string `json:"record_index"`
@@ -26,7 +26,7 @@ type Request struct {
 	Conversion   string `json:"conversion"`
 }
 
-func Calculate(data []Observation, req Request) (map[string]string, error) {
+func CardCalculation(data []Observation, req CardCalculationRequest) (map[string]string, error) {
 	// Sort the data in descending order based on TimePeriod
 	sort.Slice(data, func(i, j int) bool {
 		return data[i].ObsKey["TIME_PERIOD"] > data[j].ObsKey["TIME_PERIOD"]
@@ -198,3 +198,84 @@ func extractRecordKeyValue(data []Observation, key string, formula string, targe
 	}
 	return ""
 }
+
+//------------------------------------------------------------
+
+// ChartCalculationRequest struct for request parameters
+type ChartCalculationRequest struct {
+	GroupByAndSum string `json:"groupby_and_sum"`
+	GetTop        string `json:"get_top"`
+	Conversion    string `json:"conversion"`
+}
+
+// CalculateGroupedSum processes the observations based on the given request
+func CalculateGroupedSum(observations []Observation, request ChartCalculationRequest) ([]Observation, error) {
+	// Map to store the summed values
+	summedData := make(map[string]float64)
+
+	// Iterate through observations and sum values based on GroupBy key
+	for _, obs := range observations {
+		groupKey, exists := obs.ObsKey[request.GroupByAndSum]
+		if !exists {
+			continue // Skip if the key does not exist in ObsKey
+		}
+
+		value, err := obs.ObsValue.Value.Float64()
+		if err != nil {
+			return nil, fmt.Errorf("invalid number format: %v", err)
+		}
+
+		summedData[groupKey] += value
+	}
+
+	// Convert map to slice of Observation
+	var result []Observation
+	for key, sum := range summedData {
+		result = append(result, Observation{
+			ObsKey: map[string]string{
+				request.GroupByAndSum: key,
+			},
+			ObsValue: struct {
+				Value json.Number `json:"Value"`
+			}{
+				// Value: json.Number(fmt.Sprintf("%.0f", sum)),
+				Value: json.Number(strconv.FormatFloat(convertValue(sum, request.Conversion), 'f', 6, 64)),
+			},
+		})
+	}
+
+	// Sort by summed values in descending order
+	sort.Slice(result, func(i, j int) bool {
+		val1, _ := result[i].ObsValue.Value.Float64()
+		val2, _ := result[j].ObsValue.Value.Float64()
+		return val1 > val2 // Sort descending
+	})
+
+	// Get the top N values
+	topN, err := strconv.Atoi(request.GetTop)
+	if err != nil || topN <= 0 || topN > len(result) {
+		topN = len(result) // If invalid input, return all
+	}
+
+	return result[:topN], nil
+}
+
+// Convert values based on conversion type
+func convertValue(value float64, conversion string) float64 {
+	switch conversion {
+	case "M": // Million
+		return round(value/1000000, 2)
+	case "T": // Trillion
+		return round(value/1000000000000, 2)
+	case "K": // Thousand
+		return round(value/1000, 2)
+	default: // No conversion
+		return round(value, 2)
+	}
+}
+
+// Function to round a float to 2 decimal places
+func round(val float64, precision int) float64 {
+	p := math.Pow(10, float64(precision))
+	return math.Round(val*p) / p
+}