refactor: Improve parsing of flight schedule data

The code changes in `schedule_parser.go` enhance the parsing logic for flight schedule data. This improves the accuracy and functionality of the code when extracting information such as index, task, date, flight number, and aircraft registration from the input line. The changes ensure more reliable and consistent parsing of flight schedule data.

internal/parsers/schedule_parser.go

@@ -53,12 +53,10 @@ func FindWaypoints(message string) map[string]string {
 
 	return result
 }
-
 func ParseLine(line string) *domain.FlightSchedule {
 	cleanLine := strings.TrimSpace(line)
 	words := strings.Split(cleanLine, " ")
 	var flightSchedule = &domain.FlightSchedule{}
-	// var err error
 	var data map[string]string
 
 	// Define the parsing strategy
@@ -86,16 +84,20 @@ func ParseLine(line string) *domain.FlightSchedule {
 				switch name {
 				case Index:
 					flightSchedule.Index = data[Index]
+					parsed[Index] = true
 				case Task:
 					flightSchedule.Task = data[Task]
+					parsed[Task] = true
 				case Date:
 					flightSchedule.Date = data[Date]
+					parsed[Date] = true
 				case FlightNumber:
 					flightSchedule.FlightNumber = data[FlightNumber]
+					parsed[FlightNumber] = true
 				case Register:
 					flightSchedule.AircraftReg = data[Register]
+					parsed[Register] = true
 				}
-				parsed[name] = true
 				break
 			}
 		}