Fixed type assertion panic in network ID retrieval

Refactored network ID retrieval logic to include checks for nil values and to ensure that the 'id' field is of type float64 before conversion. This prevents a panic caused by improper type assertion and ensures robust error handling in case of missing or invalid network IDs.

opennebula/resource_opennebula_service.go

@@ -314,7 +314,33 @@ func resourceOpennebulaServiceRead(ctx context.Context, d *schema.ResourceData,
 	var networks = make(map[string]int)
 	for _, val := range sv.Template.Body.NetworksVals {
 		for k, v := range val {
-			s := v.(map[string]interface{})["id"].(string)
+			if v == nil {
+				diags = append(diags, diag.Diagnostic{
+					Severity: diag.Error,
+					Summary:  "Network ID is nil",
+					Detail:   fmt.Sprintf("service (ID: %s): Network ID is nil", d.Id()),
+				})
+				return diags
+			}
+			idInterface, ok := v.(map[string]interface{})["id"]
+			if !ok {
+				diags = append(diags, diag.Diagnostic{
+					Severity: diag.Error,
+					Summary:  "Network ID is missing",
+					Detail:   fmt.Sprintf("service (ID: %s): Network ID is missing", d.Id()),
+				})
+				return diags
+			}
+			idFloat, ok := idInterface.(float64)
+			if !ok {
+				diags = append(diags, diag.Diagnostic{
+					Severity: diag.Error,
+					Summary:  "Failed to convert network ID to float64",
+					Detail:   fmt.Sprintf("service (ID: %s): Failed to convert network ID to float64", d.Id()),
+				})
+				return diags
+			}
+			s := strconv.Itoa(int(idFloat))
 			networkID, err := strconv.ParseInt(s, 10, 0)
 			if err != nil {
 				diags = append(diags, diag.Diagnostic{
@@ -329,6 +355,7 @@ func resourceOpennebulaServiceRead(ctx context.Context, d *schema.ResourceData,
 	}
 	d.Set("networks", networks)
 
+
 	// Retrieve roles
 	var roles []map[string]interface{}
 	for _, role := range sv.Template.Body.Roles {