Initial cloud-services repo - gateway service + pkg modules

pkg/usecase_helpers/ecus.go

@@ -0,0 +1,34 @@
+package usecase_helpers
+
+import (
+	"fiskerinc.com/modules/common"
+	"fiskerinc.com/modules/db/queries"
+)
+
+// PopulateECUsCurrentVersion adds CurrentVersion field in provided ecus list of
+// a specific vehicle, defined by vin.
+// Since the ecus amount doesn't change, we don't need returning ecus and
+// caller can use the same variable he provided in the function.
+func PopulateECUsCurrentVersion(cars queries.CarsInterface, vin string, ecus []*common.UpdateManifestECU) error {
+	ids := make([]string, 0, len(ecus))
+	for _, ecu := range ecus {
+		ids = append(ids, ecu.ECU)
+	}
+
+	carECUs, err := cars.GetCarECUs(common.CarECUFilter{VIN: vin, ECUs: ids, Unique: true}, nil)
+	if err != nil {
+		return err
+	}
+
+	carECUsMap := make(map[string]string, len(carECUs))
+	for _, ecu := range carECUs {
+		carECUsMap[ecu.ECU] = ecu.Version
+	}
+
+	for index, ecu := range ecus {
+		ecu.CurrentVersion = carECUsMap[ecu.ECU]
+		ecus[index] = ecu
+	}
+
+	return nil
+}