package model

import (
	"encoding/json"
	"fmt"

	"github.com/tech/sendico/pkg/merrors"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
)

type PaymentType int

const (
	PaymentTypeIban PaymentType = iota
	PaymentTypeCard
	PaymentTypeCardToken
	PaymentTypeBankAccount
	PaymentTypeWallet
	PaymentTypeCryptoAddress
)

var paymentTypeToString = map[PaymentType]string{
	PaymentTypeIban:          "iban",
	PaymentTypeCard:          "card",
	PaymentTypeCardToken:     "cardToken",
	PaymentTypeBankAccount:   "bankAccount",
	PaymentTypeWallet:        "wallet",
	PaymentTypeCryptoAddress: "cryptoAddress",
}

var paymentTypeFromString = map[string]PaymentType{
	"iban":          PaymentTypeIban,
	"card":          PaymentTypeCard,
	"cardToken":     PaymentTypeCardToken,
	"bankAccount":   PaymentTypeBankAccount,
	"wallet":        PaymentTypeWallet,
	"cryptoAddress": PaymentTypeCryptoAddress,
}

func (t PaymentType) String() string {
	if v, ok := paymentTypeToString[t]; ok {
		return v
	}
	return "iban"
}

func (t PaymentType) MarshalJSON() ([]byte, error) {
	return json.Marshal(t.String())
}

func (t *PaymentType) UnmarshalJSON(data []byte) error {
	var val string
	if err := json.Unmarshal(data, &val); err != nil {
		return err
	}
	v, ok := paymentTypeFromString[val]
	if !ok {
		return merrors.InvalidArgument(fmt.Sprintf("unknown PaymentType: %q", val))
	}
	*t = v
	return nil
}

type PaymentMethod struct {
	PermissionBound `bson:",inline" json:",inline"`

	RecipientRef primitive.ObjectID `bson:"recipientRef" json:"recipientRef"`
	Type         PaymentType        `bson:"type" json:"type"`
	Data         bson.Raw           `bson:"data" json:"data"`
}