tradable.ts

Installation

npm add @1amageek/tradable

Usage

You need to implement Tradable Inteface in the object associated with the user.Also, you prepare objects that implement other protocols.

PaymentDelegate

In order to process payment with tradabe it is necessary to implement delegate. This is an example of paying with Stripe.

export const stripe = new Stripe(Config.STRIPE_API_KEY)
export class StripePaymentDelegate implements tradable.TransactionDelegate {

    async payment<U extends tradable.OrderItemProtocol, T extends tradable.OrderProtocol<U>>(currency: tradable.Currency, amount: number, order: T, options: tradable.PaymentOptions) {
        const idempotency_key = order.id
        const data: Stripe.charges.IChargeCreationOptions = {
            amount: order.amount,
            currency: order.currency,
            description: `Charge for user/${order.purchasedBy}`
        }

        if (options) {
            if (options.customer) {
                data.customer = options.customer
            }
            if (options.source) {
                data.source = options.source
            }
        }
        data.customer = Config.STRIPE_CUS_TOKEN
        data.source = Config.STRIPE_CORD_TOKEN

        try {
            const charge = await stripe.charges.create(data, {
                idempotency_key: idempotency_key
            })
            return charge
        } catch (error) {
            console.log(error)
            throw error
        }
    }

    async refund<U extends tradable.OrderItemProtocol, T extends tradable.OrderProtocol<U>>(currency: tradable.Currency, amount: number, order: T, options: tradable.PaymentOptions, reason?: string | undefined) {
        const transactionResults = order.transactionResults
        const transactionResult = transactionResults[transactionResults.length - 1]
        const stripeCharge = transactionResult["stripe"] as Stripe.charges.ICharge
        const charegeID = stripeCharge.id
        const idempotency_key = `refund:${order.id}`

        let data: Stripe.refunds.IRefundCreationOptions = {}
        data.amount = amount
        if (reason) {
            data.reason = reason
        }

        try {
            return await stripe.charges.refund(charegeID, data, {
                idempotency_key: idempotency_key
            })
        } catch (error) {
            throw error
        }
    }

    async partRefund<U extends tradable.OrderItemProtocol, T extends tradable.OrderProtocol<U>>(currency: tradable.Currency, amount: number, order: T, orderItem: U, options: tradable.PaymentOptions, reason?: string | undefined) {
        const transactionResults = order.transactionResults
        const transactionResult = transactionResults[transactionResults.length - 1]

        const stripeCharge = transactionResult["stripe"] as Stripe.charges.ICharge
        const charegeID = stripeCharge.id
        const idempotency_key = `refund:${orderItem.id}`

        let data: Stripe.refunds.IRefundCreationOptions = {}
        data.amount = amount
        if (reason) {
            data.reason = reason
        }

        try {
            return await stripe.charges.refund(charegeID, data, {
                idempotency_key: idempotency_key
            })
        } catch (error) {
            throw error
        }
    }

    async transfer<U extends tradable.OrderItemProtocol, T extends tradable.OrderProtocol<U>,
        V extends tradable.BalanceTransactionProtocol, W extends tradable.AccountProtocol<V>>
        (currency: tradable.Currency, amount: number, order: T, toAccount: W, options: tradable.TransferOptions) {
        const idempotency_key = order.id
        const destination = toAccount.accountInformation['stripe']['id']
        const data: Stripe.transfers.ITransferCreationOptions = {
            amount: order.amount,
            currency: order.currency,
            transfer_group: order.id,
            destination: destination
        }

        try {
            const transfer = await stripe.transfers.create(data, {
                idempotency_key: idempotency_key
            })
            return transfer
        } catch (error) {
            console.log(error)
            throw error
        }
    }

    async transferCancel<U extends tradable.OrderItemProtocol, T extends tradable.OrderProtocol<U>>(currency: tradable.Currency, amount: number, order: T, options: tradable.TransferOptions, reason?: string | undefined) {
        throw new Error("Method not implemented.");
    }

    async payout(currency: tradable.Currency, amount: number, accountID: string, options: tradable.PayoutOptions) {
        throw new Error("Method not implemented.");
    }

    async payoutCancel(currency: tradable.Currency, amount: number, accountID: string, options: tradable.PayoutOptions) {
        throw new Error("Method not implemented.");
    }
}

Tradable

Request implementation of protocol required for trading.

UserProtocol

Request implementation of the protocol of the user who can place an order.

ProductProtocol

Request implementation of protocol of product information.

SKUShardProtocol

Request implementation of SKUShard protocol.

SKUProtocol

Request implementation of SKU protocol.

OrderProtocol

Request implementation of Order protocol.

OrderItemProtocol

Request implementation of OrderItem protocol.