package domain

import (
	"fmt"
	"strings"
	"time"
)

type OperationStatus string

const (
	OperationStatusRunning   OperationStatus = "RUNNING"
	OperationStatusSucceeded OperationStatus = "SUCCEEDED"
	OperationStatusFailed    OperationStatus = "FAILED"
	OperationStatusCanceled  OperationStatus = "CANCELED"
)

type Operation struct {
	ID        string
	TargetID  string
	Type      string
	Status    OperationStatus
	CreatedAt time.Time
	UpdatedAt time.Time
}

func (o Operation) Validate() error {
	if strings.TrimSpace(o.ID) == "" {
		return fmt.Errorf("%w: operation id is required", ErrInvalidArgument)
	}
	if strings.TrimSpace(o.TargetID) == "" {
		return fmt.Errorf("%w: operation target id is required", ErrInvalidArgument)
	}
	if strings.TrimSpace(o.Type) == "" {
		return fmt.Errorf("%w: operation type is required", ErrInvalidArgument)
	}
	if !o.Status.Valid() {
		return fmt.Errorf("%w: operation status %q", ErrInvalidStatus, o.Status)
	}
	return nil
}

func (s OperationStatus) Valid() bool {
	switch s {
	case OperationStatusRunning,
		OperationStatusSucceeded,
		OperationStatusFailed,
		OperationStatusCanceled:
		return true
	default:
		return false
	}
}