import type {SelectedProductState} from '@/types'

type RedeemValidationParams = {
    sessionId?: string
    selectedProduct: SelectedProductState | null
    selectedAddressId: string
}

type RedeemValidationResult =
    | { valid: true }
    | { valid: false; message: string }

export function validateRedeemSubmission({
    sessionId,
    selectedProduct,
    selectedAddressId,
}: RedeemValidationParams): RedeemValidationResult {
    if (!sessionId) {
        return {
            valid: false,
            message: 'Session expired. Please log in again.',
        }
    }

    if (!selectedProduct) {
        return {
            valid: false,
            message: 'No product selected.',
        }
    }

    if (selectedProduct.categoryId === 'PHYSICAL' && !selectedAddressId) {
        return {
            valid: false,
            message: 'Please select a shipping address.',
        }
    }

    return {valid: true}
}

type AddAddressValidationParams = {
    isAddAddressFormValid: boolean
}

type AddAddressValidationResult =
    | { valid: true }
    | { valid: false; message: string }

export function validateAddAddressSubmission({
    isAddAddressFormValid,
}: AddAddressValidationParams): AddAddressValidationResult {
    if (!isAddAddressFormValid) {
        return {
            valid: false,
            message: 'Please complete all required address fields.',
        }
    }

    return {valid: true}
}