tracking

type Cargo struct {
	TrackingID           string    `json:"tracking_id"`
	StatusText           string    `json:"status_text"`
	Origin               string    `json:"origin"`
	Destination          string    `json:"destination"`
	ETA                  time.Time `json:"eta"`
	NextExpectedActivity string    `json:"next_expected_activity"`
	ArrivalDeadline      time.Time `json:"arrival_deadline"`
	Events               []Event   `json:"events"`
}

type Event struct {
	Description string `json:"description"`
	Expected    bool   `json:"expected"`
}

type Leg struct {
	VoyageNumber string    `json:"voyage_number"`
	From         string    `json:"from"`
	To           string    `json:"to"`
	LoadTime     time.Time `json:"load_time"`
	UnloadTime   time.Time `json:"unload_time"`
}

type Service interface {
	// Track returns a cargo matching a tracking ID.
	Track(id string) (Cargo, error)
}