package validator

import (
	"enaklo-pos-be/internal/entity"
	"github.com/pkg/errors"
	"time"
)

type RequestValidator struct{}

func NewRequestValidator() *RequestValidator {
	return &RequestValidator{}
}

func (v *RequestValidator) ValidateSearchRequest(req *entity.SearchRequest) error {
	if req.Status != "" {
		validStatuses := []string{"pending", "confirmed", "processing", "completed", "cancelled"}
		if !v.isValidStatus(req.Status, validStatuses) {
			return errors.New("invalid status value")
		}
	}

	if !req.Start.IsZero() && !req.End.IsZero() {
		if req.Start.After(req.End) {
			return errors.New("start date cannot be after end date")
		}

		if req.End.Sub(req.Start) > 365*24*time.Hour {
			return errors.New("date range cannot exceed 1 year")
		}
	}

	return nil
}

func (v *RequestValidator) isValidStatus(status string, validStatuses []string) bool {
	for _, validStatus := range validStatuses {
		if status == validStatus {
			return true
		}
	}
	return false
}