Upstream sync

controllers/devices_controller.go

@@ -18,6 +18,10 @@ import (
 	"gitlab.com/pactual1/backend/shared"
 )
 
+const (
+	ContractDistanceThresholdKm = float64(10)
+)
+
 func SaveDeviceInfo(c *gin.Context) {
 	var deviceInfo models.DeviceInfo
 	rawData, _ := c.GetRawData()
@@ -48,7 +52,7 @@ func SaveDeviceInfo(c *gin.Context) {
 			deviceInfoBytes, _ := json.Marshal(deviceInfo)
 			if deviceContract.BlockchainSecret == "" {
 				deviceContract.BlockchainSecret = shared.GenerateRandomString(BlockchainSecretLength)
-				_, _, err := contract.UpdateContract(deviceContract)
+				deviceContract, _, err = contract.UpdateContract(deviceContract)
 				if err != nil {
 					log.Printf("SaveDeviceInfo Update Contract error: %v", err)
 					c.JSON(http.StatusInternalServerError, gin.H{"error": "Could not update contract secret"})
@@ -68,6 +72,16 @@ func SaveDeviceInfo(c *gin.Context) {
 				c.JSON(http.StatusInternalServerError, gin.H{"error": "Could not save device info in blockchain"})
 				return
 			}
+
+			if shared.DistanceKm(deviceInfo.Lat, deviceInfo.Lon, deviceContract.EndLat, deviceContract.EndLon) <= ContractDistanceThresholdKm {
+				deviceContract.Status = models.ContractStatusExecuted
+				_, _, err := contract.UpdateContract(deviceContract)
+				if err != nil {
+					log.Printf("SaveDeviceInfo Update Contract error: %v", err)
+					c.JSON(http.StatusInternalServerError, gin.H{"error": "Could not update contract status"})
+					return
+				}
+			}
 		}
 	}
 

database/contract/contract.go

@@ -15,6 +15,7 @@ import (
 	"gitlab.com/pactual1/backend/database/device"
 	"gitlab.com/pactual1/backend/models"
 	"gitlab.com/pactual1/backend/services/blockchain"
+	"gitlab.com/pactual1/backend/services/messaging"
 	"gitlab.com/pactual1/backend/shared"
 )
 
@@ -167,21 +168,42 @@ func UpdateContract(contract models.Contract) (models.Contract, int, error) {
 	}
 
 	// Create contract in blockchain only when it is signed
-	if oldContract.Status != contract.Status && contract.Status == models.ContractStatusSigned {
+	if oldContract.Status != contract.Status {
-		err = blockchain.NewService(config.AppConfig.Blockchain).CreateContract(context.Background(), shared.CovertUintToByte32(contract.ID))
-		if err != nil {
-			log.Printf("UpdateContract Error: Could not create contract in blockchain: %v", err)
-			return contract, http.StatusInternalServerError, err
-		}
 
-		// Register devices in blockchain when contract is signed
+		if contract.Status == models.ContractStatusSigned {
-		for _, device := range devices {
+			err = blockchain.NewService(config.AppConfig.Blockchain).CreateContract(context.Background(), shared.CovertUintToByte32(contract.ID))
-			err = blockchain.NewService(config.AppConfig.Blockchain).RegisterNewDeviceID(context.Background(), shared.CovertUintToByte32(contract.ID), shared.CovertUintToByte32(device.ID))
 			if err != nil {
-				log.Printf("UpdateContract Error: Could not register contract device in blockchain: %v", err)
+				log.Printf("UpdateContract Error: Could not create contract in blockchain: %v", err)
 				return contract, http.StatusInternalServerError, err
 			}
+
+			// Register devices in blockchain when contract is signed
+			for _, device := range devices {
+				err = blockchain.NewService(config.AppConfig.Blockchain).RegisterNewDeviceID(context.Background(), shared.CovertUintToByte32(contract.ID), shared.CovertUintToByte32(device.ID))
+				if err != nil {
+					log.Printf("UpdateContract Error: Could not register contract device in blockchain: %v", err)
+					return contract, http.StatusInternalServerError, err
+				}
+			}
 		}
+
+		messagingChannel := messaging.GetMessagingChannel()
+
+		notification := models.Notification{
+			Title:            "Contract Alert",
+			NotificationType: "Contract",
+			Text:             fmt.Sprintf("Contract %s status updated to %s", contract.Name, contract.Status),
+			CompanyID:        int(contract.BuyerID),
+		}
+		messagingChannel <- notification
+
+		sellerNotification := models.Notification{
+			Title:            "Contract Alert",
+			NotificationType: "Contract",
+			Text:             fmt.Sprintf("Contract %s status updated to %s", contract.Name, contract.Status),
+			CompanyID:        int(contract.SellerID),
+		}
+		messagingChannel <- sellerNotification
 	}
 
 	return contract, status, err
@@ -243,59 +265,59 @@ func GetContractByID(contractID uint) (models.Contract, int, error) {
 }
 
 func CountContractsByMultipleStatusesAndTotal(companyID uint, startTime, endTime time.Time) (int64, int64, int64, map[string]map[string]int64, error) {
-    var activeCount, executedCount, totalCount int64
+	var activeCount, executedCount, totalCount int64
-    monthlyCounts := make(map[string]map[string]int64)
+	monthlyCounts := make(map[string]map[string]int64)
 
-    var contract models.Contract
+	var contract models.Contract
 
-    // Iterate through each month within the specified date range
+	// Iterate through each month within the specified date range
-    for dt := startTime; dt.Before(endTime); dt = dt.AddDate(0, 1, 0) {
+	for dt := startTime; dt.Before(endTime); dt = dt.AddDate(0, 1, 0) {
-        monthEnd := dt.AddDate(0, 1, 0)
+		monthEnd := dt.AddDate(0, 1, 0)
-        if monthEnd.After(endTime) {
+		if monthEnd.After(endTime) {
-            monthEnd = endTime
+			monthEnd = endTime
-        }
+		}
 
-        // Initialize monthlyCounts for the current month
+		// Initialize monthlyCounts for the current month
-        monthKey := dt.Format("2006-01")
+		monthKey := dt.Format("2006-01")
-        monthlyCounts[monthKey] = map[string]int64{"active": 0, "executed": 0, "total": 0}
+		monthlyCounts[monthKey] = map[string]int64{"active": 0, "executed": 0, "total": 0}
 
-        // Query for 'active' contracts for the current month
+		// Query for 'active' contracts for the current month
-        var active int64
+		var active int64
-        err := shared.GetDb().Model(&contract).
+		err := shared.GetDb().Model(&contract).
-            Where("status = ? AND (buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", "active", companyID, companyID, dt, monthEnd).
+			Where("status = ? AND (buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", "active", companyID, companyID, dt, monthEnd).
-            Count(&active).Error
+			Count(&active).Error
-        if err != nil {
+		if err != nil {
-            return 0, 0, 0, nil, err
+			return 0, 0, 0, nil, err
-        }
+		}
 
-        // Query for 'executed' contracts for the current month
+		// Query for 'executed' contracts for the current month
-        var executed int64
+		var executed int64
-        err = shared.GetDb().Model(&contract).
+		err = shared.GetDb().Model(&contract).
-            Where("status = ? AND (buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", "executed", companyID, companyID, dt, monthEnd).
+			Where("status = ? AND (buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", "executed", companyID, companyID, dt, monthEnd).
-            Count(&executed).Error
+			Count(&executed).Error
-        if err != nil {
+		if err != nil {
-            return 0, 0, 0, nil, err
+			return 0, 0, 0, nil, err
-        }
+		}
 
-        // Query for total contracts for the current month
+		// Query for total contracts for the current month
-        var total int64
+		var total int64
-        err = shared.GetDb().Model(&contract).
+		err = shared.GetDb().Model(&contract).
-            Where("(buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", companyID, companyID, dt, monthEnd).
+			Where("(buyer_id = ? OR seller_id = ?) AND start_time >= ? AND end_time <= ?", companyID, companyID, dt, monthEnd).
-            Count(&total).Error
+			Count(&total).Error
-        if err != nil {
+		if err != nil {
-            return 0, 0, 0, nil, err
+			return 0, 0, 0, nil, err
-        }
+		}
 
-        // Update the counts for the current month
+		// Update the counts for the current month
-        monthlyCounts[monthKey]["active"] = active
+		monthlyCounts[monthKey]["active"] = active
-        monthlyCounts[monthKey]["executed"] = executed
+		monthlyCounts[monthKey]["executed"] = executed
-        monthlyCounts[monthKey]["total"] = total
+		monthlyCounts[monthKey]["total"] = total
 
-        // Update the total counts
+		// Update the total counts
-        activeCount += active
+		activeCount += active
-        executedCount += executed
+		executedCount += executed
-        totalCount += total
+		totalCount += total
-    }
+	}
 
-    return activeCount, executedCount, totalCount, monthlyCounts, nil
+	return activeCount, executedCount, totalCount, monthlyCounts, nil
 }

database/device/device.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"log"
-	"math"
 	"net/http"
 	"strconv"
 	"strings"
@@ -138,38 +137,35 @@ func SaveDeviceInfoToDB(deviceInfo models.DeviceInfo, rawData []byte) (models.De
 		return deviceInfo, device, fmt.Errorf("SaveDeviceInfo CREATE -DeviceInfo DB Error: %v", err)
 	}
 
-
 	go func(deviceInfo models.DeviceInfo) {
-        var contract models.Contract
+		var contract models.Contract
-	if err := shared.GetDb().Where("device_ids @> ARRAY[?]::integer[]", deviceInfo.DeviceID).First(&contract).Error; err != nil {
+		if err := shared.GetDb().Where("device_ids @> ARRAY[?]::integer[]", deviceInfo.DeviceID).First(&contract).Error; err != nil {
-		log.Printf("could not find associated contract: %v", err)
+			log.Printf("could not find associated contract: %v", err)
 
-	}
-
-	messagingChannel:= messaging.GetMessagingChannel()
-
-	if deviceInfo.Temperature > contract.MaxTemp || deviceInfo.Temperature < contract.MinTemp {
-
-		notification := models.Notification{
-			Title:           "Temperature Alert",
-			NotificationType: "Temperature",
-			Text:            fmt.Sprintf("Device %s has a temperature outside the permitted range.", deviceInfo.ExternalDeviceID),
-			CompanyID:          int(contract.BuyerID), 
 		}
 
-		sellerNotification := models.Notification{
+		messagingChannel := messaging.GetMessagingChannel()
-			Title:           "Temperature Alert",
-			NotificationType: "Temperature",
-			Text:            fmt.Sprintf("Device %s has a temperature outside the permitted range.", deviceInfo.ExternalDeviceID),
-			CompanyID:          int(contract.SellerID), 
-		}
 
-		messagingChannel <- notification
+		if deviceInfo.Temperature > contract.MaxTemp || deviceInfo.Temperature < contract.MinTemp {
-		messagingChannel <- sellerNotification
+
-	}
+			notification := models.Notification{
-    }(deviceInfo)
+				Title:            "Temperature Alert",
-	
+				NotificationType: "Temperature",
-	
+				Text:             fmt.Sprintf("Device %s has a temperature outside the permitted range.", deviceInfo.ExternalDeviceID),
+				CompanyID:        int(contract.BuyerID),
+			}
+
+			sellerNotification := models.Notification{
+				Title:            "Temperature Alert",
+				NotificationType: "Temperature",
+				Text:             fmt.Sprintf("Device %s has a temperature outside the permitted range.", deviceInfo.ExternalDeviceID),
+				CompanyID:        int(contract.SellerID),
+			}
+
+			messagingChannel <- notification
+			messagingChannel <- sellerNotification
+		}
+	}(deviceInfo)
 
 	return deviceInfo, device, nil
 }
@@ -192,136 +188,127 @@ func CountDeviceInfoByCompany(companyID uint) (int64, error) {
 
 	// Count DeviceInfo entries related to these DeviceIDs
 	if err := shared.GetDb().Model(&models.DeviceInfo{}).Where("device_id IN (?)", allDeviceIDs).Count(&count).Error; err != nil {
-	    log.Printf("CountDeviceInfoByCompany Error: Database error: %v", err)
+		log.Printf("CountDeviceInfoByCompany Error: Database error: %v", err)
-	    return 0, err
+		return 0, err
 	}
 
 	return count, nil
 }
 
-
-
 func CountDeviceBreachedAndNormalDevicesByCompany(companyID uint, startTime, endTime time.Time) (int64, int64, map[string]map[string]int64, error) {
-    var contracts []models.Contract
+	var contracts []models.Contract
-    var allDeviceIDs []int64
+	var allDeviceIDs []int64
-    var inRangeCount, outOfRangeCount int64
+	var inRangeCount, outOfRangeCount int64
-    monthlyCounts := make(map[string]map[string]int64)
+	monthlyCounts := make(map[string]map[string]int64)
 
-    // Fetch all contracts related to the company
+	// Fetch all contracts related to the company
-    if err := shared.GetDb().Where("buyer_id = ? OR seller_id = ?", companyID, companyID).Find(&contracts).Error; err != nil {
+	if err := shared.GetDb().Where("buyer_id = ? OR seller_id = ?", companyID, companyID).Find(&contracts).Error; err != nil {
-        log.Printf("CountDeviceInfoByCompany Error: Database error: %v", err)
+		log.Printf("CountDeviceInfoByCompany Error: Database error: %v", err)
-        return 0, 0, nil, err
+		return 0, 0, nil, err
-    }
+	}
 
-    // Aggregate all DeviceIDs
+	// Aggregate all DeviceIDs
-    for _, contract := range contracts {
+	for _, contract := range contracts {
-        allDeviceIDs = append(allDeviceIDs, contract.DeviceIDs...)
+		allDeviceIDs = append(allDeviceIDs, contract.DeviceIDs...)
-    }
+	}
 
-    // Iterate through each month within the specified date range
+	// Iterate through each month within the specified date range
-    for dt := startTime; dt.Before(endTime); dt = dt.AddDate(0, 1, 0) {
+	for dt := startTime; dt.Before(endTime); dt = dt.AddDate(0, 1, 0) {
-        monthEnd := dt.AddDate(0, 1, 0)
+		monthEnd := dt.AddDate(0, 1, 0)
-        if monthEnd.After(endTime) {
+		if monthEnd.After(endTime) {
-            monthEnd = endTime
+			monthEnd = endTime
-        }
+		}
 
-        startUnix := dt.Unix()
+		startUnix := dt.Unix()
-        endUnix := monthEnd.Unix()
+		endUnix := monthEnd.Unix()
 
-        // Initialize monthlyCounts for the current month
+		// Initialize monthlyCounts for the current month
-        monthKey := dt.Format("2006-01")
+		monthKey := dt.Format("2006-01")
-        monthlyCounts[monthKey] = map[string]int64{"inRange": 0, "outOfRange": 0}
+		monthlyCounts[monthKey] = map[string]int64{"inRange": 0, "outOfRange": 0}
 
-        // Count DeviceInfo entries with temperatures in range and out of range for the current month
+		// Count DeviceInfo entries with temperatures in range and out of range for the current month
-        for _, contract := range contracts {
+		for _, contract := range contracts {
-            var inRange, outOfRange int64
+			var inRange, outOfRange int64
-            err := shared.GetDb().Model(&models.DeviceInfo{}).
+			err := shared.GetDb().Model(&models.DeviceInfo{}).
-                Where("device_id IN (?) AND temperature >= ? AND temperature <= ? AND timestamp >= ? AND timestamp <= ?",
+				Where("device_id IN (?) AND temperature >= ? AND temperature <= ? AND timestamp >= ? AND timestamp <= ?",
-                    allDeviceIDs, contract.MinTemp, contract.MaxTemp, startUnix, endUnix).
+					allDeviceIDs, contract.MinTemp, contract.MaxTemp, startUnix, endUnix).
-                Count(&inRange).Error
+				Count(&inRange).Error
-            if err != nil {
+			if err != nil {
-                return 0, 0, nil, err
+				return 0, 0, nil, err
-            }
+			}
 
-            err = shared.GetDb().Model(&models.DeviceInfo{}).
+			err = shared.GetDb().Model(&models.DeviceInfo{}).
-                Where("device_id IN (?) AND (temperature < ? OR temperature > ?) AND timestamp >= ? AND timestamp <= ?",
+				Where("device_id IN (?) AND (temperature < ? OR temperature > ?) AND timestamp >= ? AND timestamp <= ?",
-                    allDeviceIDs, contract.MinTemp, contract.MaxTemp, startUnix, endUnix).
+					allDeviceIDs, contract.MinTemp, contract.MaxTemp, startUnix, endUnix).
-                Count(&outOfRange).Error
+				Count(&outOfRange).Error
-            if err != nil {
+			if err != nil {
-                return 0, 0, nil, err
+				return 0, 0, nil, err
-            }
+			}
 
-            // Update the counts for the current month
+			// Update the counts for the current month
-            monthlyCounts[monthKey]["inRange"] += inRange
+			monthlyCounts[monthKey]["inRange"] += inRange
-            monthlyCounts[monthKey]["outOfRange"] += outOfRange
+			monthlyCounts[monthKey]["outOfRange"] += outOfRange
 
-            // Update the total counts
+			// Update the total counts
-            inRangeCount += inRange
+			inRangeCount += inRange
-            outOfRangeCount += outOfRange
+			outOfRangeCount += outOfRange
-        }
+		}
-    }
+	}
 
-    return inRangeCount, outOfRangeCount, monthlyCounts, nil
+	return inRangeCount, outOfRangeCount, monthlyCounts, nil
 }
 
-
 type ContractLocationMatch struct {
-	ContractID uint
+	ContractID   uint
 	DeviceInfoID uint
 }
-const oneKmInDegrees = 0.009 // Approximately 1 km in degrees for lat/lon
-
-func isWithinOneKm(lat1, lon1, lat2, lon2 float64) bool {
-	return math.Abs(lat1-lat2) <= oneKmInDegrees && math.Abs(lon1-lon2) <= oneKmInDegrees
-}
 
 func FetchMatchingContractsAndDeviceInfo(companyID uint64, startTime, endTime time.Time) ([]ContractLocationMatch, error) {
-    var contracts []models.Contract
+	var contracts []models.Contract
-    var results []ContractLocationMatch
+	var results []ContractLocationMatch
-    registeredDevices := make(map[uint]bool)  // Map to keep track of registered devices
+	registeredDevices := make(map[uint]bool) // Map to keep track of registered devices
 
-    //Fetch contracts
+	//Fetch contracts
-    err := shared.GetDb().
+	err := shared.GetDb().
-        Where("start_time >= ? AND end_time <= ? AND (buyer_id = ? OR seller_id = ?) ", startTime, endTime, companyID, companyID).
+		Where("start_time >= ? AND end_time <= ? AND (buyer_id = ? OR seller_id = ?) ", startTime, endTime, companyID, companyID).
-        Find(&contracts).Error
+		Find(&contracts).Error
 
-    if err != nil {
+	if err != nil {
-        return nil, err
+		return nil, err
-    }
+	}
-    //Loop through each contract to find matching DeviceInfo
+	//Loop through each contract to find matching DeviceInfo
-    for _, contract := range contracts {
+	for _, contract := range contracts {
-        var deviceInfos []models.DeviceInfo
+		var deviceInfos []models.DeviceInfo
 
-        deviceIDStr := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(contract.DeviceIDs)), ","), "[]")
+		deviceIDStr := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(contract.DeviceIDs)), ","), "[]")
-        queryString := fmt.Sprintf("device_id IN (%s) AND created_at >= ? AND created_at <= ?", deviceIDStr)
+		queryString := fmt.Sprintf("device_id IN (%s) AND created_at >= ? AND created_at <= ?", deviceIDStr)
-        
-        err := shared.GetDb().
-            Where(queryString, contract.StartTime, contract.EndTime).
-            Find(&deviceInfos).Error
 
-        if err != nil {
+		err := shared.GetDb().
-            return nil, err
+			Where(queryString, contract.StartTime, contract.EndTime).
-        }
+			Find(&deviceInfos).Error
 
-        // Compare locations and created_at
+		if err != nil {
-        for _, deviceInfo := range deviceInfos {
+			return nil, err
-            // Continue to the next iteration if this device has already been registered
+		}
-            if registeredDevices[deviceInfo.DeviceID] {
-                continue
-            }
 
-            if isWithinOneKm(contract.StartLat, contract.StartLon, deviceInfo.Lat, deviceInfo.Lon) ||
+		// Compare locations and created_at
-               isWithinOneKm(contract.EndLat, contract.EndLon, deviceInfo.Lat, deviceInfo.Lon) {
+		for _, deviceInfo := range deviceInfos {
+			// Continue to the next iteration if this device has already been registered
+			if registeredDevices[deviceInfo.DeviceID] {
+				continue
+			}
 
-                results = append(results, ContractLocationMatch{
+			if shared.DistanceKm(contract.StartLat, contract.StartLon, deviceInfo.Lat, deviceInfo.Lon) <= 1 ||
-                    ContractID:  contract.ID,
+				shared.DistanceKm(contract.EndLat, contract.EndLon, deviceInfo.Lat, deviceInfo.Lon) <= 1 {
-                    DeviceInfoID: deviceInfo.ID,
-                })
-                registeredDevices[deviceInfo.DeviceID] = true  // Mark this device as registered
-            }
-        }
-    }
 
-    return results, nil
+				results = append(results, ContractLocationMatch{
+					ContractID:   contract.ID,
+					DeviceInfoID: deviceInfo.ID,
+				})
+				registeredDevices[deviceInfo.DeviceID] = true // Mark this device as registered
+			}
+		}
+	}
+
+	return results, nil
 }
-

postman/Backend.postman_collection.json

@@ -0,0 +1,700 @@
+{
+	"info": {
+		"_postman_id": "cae9b5db-2e4f-46c8-9f86-51c530d51c36",
+		"name": "Backend",
+		"schema": "https://schema.getpostman.com/json/collection/v2.0.0/collection.json",
+		"_exporter_id": "29923405",
+		"_collection_link": "https://pactual-toptal.postman.co/workspace/pactual-toptal-Workspace~afe12f79-75cd-428c-8cbd-e47c5f2cad3c/collection/29923405-cae9b5db-2e4f-46c8-9f86-51c530d51c36?action=share&source=collection_link&creator=29923405"
+	},
+	"item": [
+		{
+			"name": "Contract",
+			"item": [
+				{
+					"name": "Create Contracts",
+					"request": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "raw",
+							"raw": "{\n  \"sellerId\": 1,\n  \"buyerId\": 2,\n  \"description\": \"This is a sample contract.\",\n  \"productId\": 3,\n  \"minTemp\": -20.0,\n  \"maxTemp\": 40.0,\n  \"arrivalDate\": 1674019200,\n  \"penaltyType\": \"AMOUNT\",\n  \"penaltyValue\": 100,\n  \"penaltyRec\": \"DAILY\"\n}",
+							"options": {
+								"raw": {
+									"language": "json"
+								}
+							}
+						},
+						"url": "{{URL}}/contracts/create"
+					},
+					"response": [
+						{
+							"name": "Create Contracts",
+							"originalRequest": {
+								"method": "POST",
+								"header": [],
+								"body": {
+									"mode": "raw",
+									"raw": "{\n  \"sellerId\": 1,\n  \"buyerId\": 2,\n  \"description\": \"This is a sample contract.\",\n  \"productId\": 3,\n  \"minTemp\": -20.0,\n  \"maxTemp\": 40.0,\n  \"arrivalDate\": 1674019200,\n  \"penaltyType\": \"AMOUNT\",\n  \"penaltyValue\": 100,\n  \"penaltyRec\": \"DAILY\"\n}",
+									"options": {
+										"raw": {
+											"language": "json"
+										}
+									}
+								},
+								"url": "{{URL}}/contracts/create"
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Fri, 06 Oct 2023 08:40:15 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "61"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"id\": 9,\n    \"message\": \"Successfully received and saved contract\"\n}"
+						}
+					]
+				},
+				{
+					"name": "UpdateContract",
+					"request": {
+						"method": "PATCH",
+						"header": [],
+						"body": {
+							"mode": "raw",
+							"raw": "{\n  \"deviceIds\": [1,2],\n  \"status\": \"active\"\n}",
+							"options": {
+								"raw": {
+									"language": "json"
+								}
+							}
+						},
+						"url": "{{URL}}/contracts/2"
+					},
+					"response": [
+						{
+							"name": "Create Contracts",
+							"originalRequest": {
+								"method": "POST",
+								"header": [],
+								"body": {
+									"mode": "raw",
+									"raw": "{\n  \"sellerId\": 1,\n  \"buyerId\": 2,\n  \"description\": \"This is a sample contract.\",\n  \"productId\": 3,\n  \"minTemp\": -20.0,\n  \"maxTemp\": 40.0,\n  \"arrivalDate\": 1674019200,\n  \"penaltyType\": \"AMOUNT\",\n  \"penaltyValue\": 100,\n  \"penaltyRec\": \"DAILY\"\n}",
+									"options": {
+										"raw": {
+											"language": "json"
+										}
+									}
+								},
+								"url": "{{URL}}/contracts/create"
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Fri, 06 Oct 2023 08:40:15 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "61"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"id\": 9,\n    \"message\": \"Successfully received and saved contract\"\n}"
+						}
+					]
+				},
+				{
+					"name": "Get Contracts for Buyers",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": "{{URL}}/contracts"
+					},
+					"response": [
+						{
+							"name": "Get Contracts for Buyers",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": "{{URL}}/contracts"
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Fri, 06 Oct 2023 08:27:52 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "1056"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"data\": [\n        {\n            \"status\": {\n                \"key\": \"Unknown\",\n                \"value\": \"unknown\"\n            },\n            \"buyer\": {\n                \"id\": 2,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 7,\n            \"numberOfDevices\": 0,\n            \"dateCreated\": \"2023-10-06T08:36:23.752245+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Unknown\",\n                \"value\": \"unknown\"\n            },\n            \"buyer\": {\n                \"id\": 2,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 6,\n            \"numberOfDevices\": 0,\n            \"dateCreated\": \"2023-10-06T08:25:40.488392+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 1,\n            \"numberOfDevices\": 3,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Pending signature\",\n                \"value\": \"pending\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 2,\n            \"numberOfDevices\": 1,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 3,\n            \"numberOfDevices\": 4,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 4,\n            \"numberOfDevices\": 4,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        }\n    ],\n    \"total\": 6\n}"
+						}
+					]
+				},
+				{
+					"name": "Get Contracts By Id",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": "{{URL}}/contracts/1"
+					},
+					"response": [
+						{
+							"name": "Get Contracts for Buyers",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": "{{URL}}/contracts"
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Fri, 06 Oct 2023 08:27:52 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "1056"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"data\": [\n        {\n            \"status\": {\n                \"key\": \"Unknown\",\n                \"value\": \"unknown\"\n            },\n            \"buyer\": {\n                \"id\": 2,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 7,\n            \"numberOfDevices\": 0,\n            \"dateCreated\": \"2023-10-06T08:36:23.752245+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Unknown\",\n                \"value\": \"unknown\"\n            },\n            \"buyer\": {\n                \"id\": 2,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 6,\n            \"numberOfDevices\": 0,\n            \"dateCreated\": \"2023-10-06T08:25:40.488392+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 1,\n            \"numberOfDevices\": 3,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Pending signature\",\n                \"value\": \"pending\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 2,\n            \"numberOfDevices\": 1,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 3,\n            \"numberOfDevices\": 4,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        },\n        {\n            \"status\": {\n                \"key\": \"Active\",\n                \"value\": \"active\"\n            },\n            \"buyer\": {\n                \"id\": 1,\n                \"name\": \"Nova kompanija\"\n            },\n            \"contractID\": 4,\n            \"numberOfDevices\": 4,\n            \"dateCreated\": \"2023-09-13T08:36:41.742294+02:00\"\n        }\n    ],\n    \"total\": 6\n}"
+						}
+					]
+				},
+				{
+					"name": "GetContractStatuses",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": "{{URL}}/contracts/statuses"
+					},
+					"response": [
+						{
+							"name": "GetContractStatuses",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": "{{URL}}/contracts/statuses"
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Fri, 06 Oct 2023 08:28:42 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "292"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"data\": [\n        {\n            \"key\": \"active\",\n            \"value\": \"Active\"\n        },\n        {\n            \"key\": \"pending\",\n            \"value\": \"Pending signature\"\n        },\n        {\n            \"key\": \"draft\",\n            \"value\": \"Draft\"\n        },\n        {\n            \"key\": \"signed\",\n            \"value\": \"Signed\"\n        },\n        {\n            \"key\": \"ready_for_activation\",\n            \"value\": \"Ready for Activation\"\n        },\n        {\n            \"key\": \"executed\",\n            \"value\": \"Executed\"\n        },\n        {\n            \"key\": \"revoked\",\n            \"value\": \"Revoked\"\n        }\n    ]\n}"
+						}
+					]
+				}
+			]
+		},
+		{
+			"name": "Text Template",
+			"item": [
+				{
+					"name": "List text templates",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{URL}}/text_templates?offset=0&limit=20",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"text_templates"
+							],
+							"query": [
+								{
+									"key": "offset",
+									"value": "0"
+								},
+								{
+									"key": "limit",
+									"value": "20"
+								}
+							]
+						}
+					},
+					"response": [
+						{
+							"name": "Response",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "http://localhost:8080/text_templates?offset=0&limit=20",
+									"protocol": "http",
+									"host": [
+										"localhost"
+									],
+									"port": "8080",
+									"path": [
+										"text_templates"
+									],
+									"query": [
+										{
+											"key": "offset",
+											"value": "0"
+										},
+										{
+											"key": "limit",
+											"value": "20"
+										}
+									]
+								}
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Tue, 26 Sep 2023 10:27:00 GMT"
+								},
+								{
+									"key": "Content-Length",
+									"value": "152"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"text_templates\": [\n        {\n            \"ID\": 1,\n            \"CreatedAt\": \"2023-09-25T16:58:33.345979Z\",\n            \"UpdatedAt\": \"2023-09-25T16:58:33.345979Z\",\n            \"DeletedAt\": null,\n            \"Value\": \"a\"\n        }\n    ],\n    \"total\": 1\n}"
+						}
+					]
+				}
+			]
+		},
+		{
+			"name": "Product Template",
+			"item": [
+				{
+					"name": "List product template",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{URL}}/product_templates?offset=0&limit=20",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"product_templates"
+							],
+							"query": [
+								{
+									"key": "offset",
+									"value": "0"
+								},
+								{
+									"key": "limit",
+									"value": "20"
+								}
+							]
+						}
+					},
+					"response": [
+						{
+							"name": "Response",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "http://localhost:8080/product_templates?offset=0&limit=20",
+									"protocol": "http",
+									"host": [
+										"localhost"
+									],
+									"port": "8080",
+									"path": [
+										"product_templates"
+									],
+									"query": [
+										{
+											"key": "offset",
+											"value": "0"
+										},
+										{
+											"key": "limit",
+											"value": "20"
+										}
+									]
+								}
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Mon, 25 Sep 2023 16:55:54 GMT"
+								},
+								{
+									"key": "Transfer-Encoding",
+									"value": "chunked"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"product_templates\": [\n        {\n            \"ID\": 17,\n            \"CreatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"UpdatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 16,\n            \"CreatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 15,\n            \"CreatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 14,\n            \"CreatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 13,\n            \"CreatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 12,\n            \"CreatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 11,\n            \"CreatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 10,\n            \"CreatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"UpdatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 9,\n            \"CreatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"UpdatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 8,\n            \"CreatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"UpdatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 7,\n            \"CreatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"UpdatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 6,\n            \"CreatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"UpdatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 5,\n            \"CreatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"UpdatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 4,\n            \"CreatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 3,\n            \"CreatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 2,\n            \"CreatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"UpdatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 1,\n            \"CreatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"UpdatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        }\n    ],\n    \"total\": 17\n}"
+						}
+					]
+				},
+				{
+					"name": "Get Product Template by ID",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": "{{URL}}/product_templates/1"
+					},
+					"response": [
+						{
+							"name": "Response",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "http://localhost:8080/product_templates?offset=0&limit=20",
+									"protocol": "http",
+									"host": [
+										"localhost"
+									],
+									"port": "8080",
+									"path": [
+										"product_templates"
+									],
+									"query": [
+										{
+											"key": "offset",
+											"value": "0"
+										},
+										{
+											"key": "limit",
+											"value": "20"
+										}
+									]
+								}
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Mon, 25 Sep 2023 16:55:54 GMT"
+								},
+								{
+									"key": "Transfer-Encoding",
+									"value": "chunked"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"product_templates\": [\n        {\n            \"ID\": 17,\n            \"CreatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"UpdatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 16,\n            \"CreatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 15,\n            \"CreatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 14,\n            \"CreatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 13,\n            \"CreatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 12,\n            \"CreatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 11,\n            \"CreatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 10,\n            \"CreatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"UpdatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 9,\n            \"CreatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"UpdatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 8,\n            \"CreatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"UpdatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 7,\n            \"CreatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"UpdatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 6,\n            \"CreatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"UpdatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 5,\n            \"CreatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"UpdatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 4,\n            \"CreatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 3,\n            \"CreatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 2,\n            \"CreatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"UpdatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 1,\n            \"CreatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"UpdatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        }\n    ],\n    \"total\": 17\n}"
+						}
+					]
+				}
+			]
+		},
+		{
+			"name": "Locations",
+			"item": [
+				{
+					"name": "List locations",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{URL}}/locations?q=abc",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"locations"
+							],
+							"query": [
+								{
+									"key": "q",
+									"value": "abc"
+								}
+							]
+						}
+					},
+					"response": [
+						{
+							"name": "Response",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "http://localhost:8080/product_templates?offset=0&limit=20",
+									"protocol": "http",
+									"host": [
+										"localhost"
+									],
+									"port": "8080",
+									"path": [
+										"product_templates"
+									],
+									"query": [
+										{
+											"key": "offset",
+											"value": "0"
+										},
+										{
+											"key": "limit",
+											"value": "20"
+										}
+									]
+								}
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "json",
+							"header": [
+								{
+									"key": "Access-Control-Allow-Credentials",
+									"value": "true"
+								},
+								{
+									"key": "Access-Control-Allow-Headers",
+									"value": "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With"
+								},
+								{
+									"key": "Access-Control-Allow-Methods",
+									"value": "POST, OPTIONS, GET, PUT"
+								},
+								{
+									"key": "Access-Control-Allow-Origin",
+									"value": "*"
+								},
+								{
+									"key": "Content-Type",
+									"value": "application/json; charset=utf-8"
+								},
+								{
+									"key": "Date",
+									"value": "Mon, 25 Sep 2023 16:55:54 GMT"
+								},
+								{
+									"key": "Transfer-Encoding",
+									"value": "chunked"
+								}
+							],
+							"cookie": [],
+							"body": "{\n    \"product_templates\": [\n        {\n            \"ID\": 17,\n            \"CreatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"UpdatedAt\": \"2023-09-25T16:45:01.586172Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 16,\n            \"CreatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:45.66992Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 15,\n            \"CreatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"UpdatedAt\": \"2023-09-25T16:44:38.975468Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"Name\"\n        },\n        {\n            \"ID\": 14,\n            \"CreatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:55.978523Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 13,\n            \"CreatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:49.435178Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 12,\n            \"CreatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:15.815458Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 11,\n            \"CreatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"UpdatedAt\": \"2023-09-25T16:43:03.75841Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 10,\n            \"CreatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"UpdatedAt\": \"2023-09-25T16:40:26.031528Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 9,\n            \"CreatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"UpdatedAt\": \"2023-09-25T16:39:54.451953Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 8,\n            \"CreatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"UpdatedAt\": \"2023-09-25T16:38:34.110926Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 7,\n            \"CreatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"UpdatedAt\": \"2023-09-25T16:37:05.161071Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 6,\n            \"CreatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"UpdatedAt\": \"2023-09-25T16:36:19.275174Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 5,\n            \"CreatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"UpdatedAt\": \"2023-09-25T16:34:20.104245Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 4,\n            \"CreatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:59.988835Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 3,\n            \"CreatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"UpdatedAt\": \"2023-09-25T16:32:55.449467Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 2,\n            \"CreatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"UpdatedAt\": \"2023-09-25T16:30:27.334546Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        },\n        {\n            \"ID\": 1,\n            \"CreatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"UpdatedAt\": \"2023-09-25T16:28:28.085355Z\",\n            \"DeletedAt\": null,\n            \"Name\": \"a\"\n        }\n    ],\n    \"total\": 17\n}"
+						}
+					]
+				}
+			]
+		}
+	],
+	"event": [
+		{
+			"listen": "prerequest",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					""
+				]
+			}
+		},
+		{
+			"listen": "test",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					""
+				]
+			}
+		}
+	],
+	"variable": [
+		{
+			"key": "URL",
+			"value": "http://localhost:8080"
+		}
+	]
+}

shared/user_data.go

@@ -4,7 +4,28 @@
 
 package shared
 
+import "math"
+
 const (
 	RoleAdmin   string = "admin"
 	RoleProUser string = "pro-user"
 )
+
+func DistanceKm(lat1 float64, lng1 float64, lat2 float64, lng2 float64) float64 {
+	radlat1 := float64(math.Pi * lat1 / 180)
+	radlat2 := float64(math.Pi * lat2 / 180)
+
+	theta := float64(lng1 - lng2)
+	radtheta := float64(math.Pi * theta / 180)
+
+	dist := math.Sin(radlat1)*math.Sin(radlat2) + math.Cos(radlat1)*math.Cos(radlat2)*math.Cos(radtheta)
+	if dist > 1 {
+		dist = 1
+	}
+
+	dist = math.Acos(dist)
+	dist = dist * 180 / math.Pi
+	dist = dist * 60 * 1.1515
+
+	return dist * 1.609344
+}