# DAPI Node ## Introduction The DAPI Node is a library that runs as part of your backend and handles communication between your backend and the Dapi API (). ## Library Setup This repo contains the source code of the library. To build the library, run the below script: ``` npm run build ``` This will create a folder called `lib` in the folder. ### Example app I have included an example folder to make it wasy for any developer to play with this library. But since this example is in `ts`, you will have to compile the `ts` to `js` and then run the js output file. To do this run the below script ```sh tsc ./example/Client.ts && node ./example/Client.js ``` > _Note:_ For the above script to work, you need to install `typescript` globally on your system. > > `sh npm install -g typescript ` ## DAPI API A list of all options on the DAPI Node that your **backend** can call to perform some operations. - _Auth Product:_ `auth.exchangeToken` - _Data Product:_ `data.getIdentity` `data.getAccounts` `data.getCompleteAccounts` `data.getAccountBalance` `data.getAccountTransactions` `data.getCards` `data.getCardBalance` `data.getCardTransactions` - _Payment Product:_ `payment.getBeneficiaries` `payment.createBeneficiary` `payment.createTransfer` `payment.transferAutoFlow` - _Metadata Product:_ `metadata.getAccounts` ## Reference ### IBaseResponse All the responses have the fields described here. Meaning all the responses described below in the document will have following fields besides the ones specific to each response. | Parameter | Type | Description | | ----------- | -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | operationID | `string` | Unique ID generated to identify a specific operation. | | success | `boolean` | Returns true if request is successful and false otherwise." | | status | `string` | The status of the job.

`done` - Operation Completed.
`failed` - Operation Failed.
`user_input_required` - Pending User Input.
`initialized` - Operation In Progress.

For further explanation see [Operation Statuses](https://dapi-api.readme.io/docs/operation-statuses). | | userInputs | `IUserInput[]` | Array of `IUserInput` objects, that are needed to complete this operation.

Specifies the type of further information required from the user before the job can be completed.

Note: It's only returned if operation status is `user_input_required` | | type | `string` | Type of error encountered.

Note: It's only returned if operation status is `failed` | | msg | `string` | Detailed description of the error.

Note: It's only returned if operation status is `failed` | #### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | query | `string` | Textual description of what is required from the user side. | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. In the response it will always be empty. | ### Methods #### auth.exchangeToken Method is used to obtain user's permanent access token by exchanging it with access code received during the user authentication (user login). ##### Note: You can read more about how to obtain a permanent token on [Obtain an Access Token](https://dapi-api.readme.io/docs/get-an-access-token). ##### Method Description ``` async exchangeToken(accessCode: string, connectionID: string): Promise ``` ##### Input Parameters | Parameter | Type | Description | | -------------------------------- | -------- | ---------------------------------------------------------------------------------------------------- | | **accessCode**
_REQUIRED_ | `string` | Unique code for a user’s successful login to **Connect**. Returned in the response of **UserLogin**. | | **connectionID**
_REQUIRED_ | `string` | The `connectionID` from a user’s successful log in to **Connect**. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------------- | -------- | -------------------------------------------- | | **accessToken** | `string` | A unique permanent token linked to the user. | --- #### data.getIdentity Method is used to retrieve personal details about the user. ##### Method Description ``` async getIdentity(accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------- | ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | identity | `IIdentity` | An object containing the identity data of the user.

For the exact schema of the `identity` object, see [Identity schema](https://dapi-api.readme.io/docs/get-identity#response). | --- #### data.getAccounts Method is used to retrieve list of all the bank accounts registered on the user. The list will contain all types of bank accounts. ##### Method Description ``` async getAccounts(accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------- | ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | accounts | `IAccount[]` | An array containing the accounts data of the user.

For the exact schema of the `accounts` array, see [Account schema](https://dapi-api.readme.io/docs/get-accounts#account-schema). | --- #### data.getCompleteAccounts Method is used to retrieve list of all the bank accounts registered on the user, with the balance of each account inside it. The list will contain all types of bank accounts. ##### Method Description ``` async getCompleteAccounts(accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------- | ------------ |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | accounts | `IAccount[]` | An array containing the accounts data of the user.

For the exact schema of the `accounts` array, see [Account schema](https://docs.dapi.com/docs/get-complete-accounts#account-schema).| --- #### data.getAccountBalance Method is used to retrieve balance on specific bank account of the user. ##### Method Description ``` async getAccountBalance(accessToken: string, userSecret: string, accountID: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accountID**
_REQUIRED_ | `string` | The bank account ID which its balance is requested.
Retrieved from one of the accounts returned from the `GetAccounts` method. | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be valid if the status is `done`: | Parameter | Type | Description | | --------- | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | balance | `IBalance` | An object containing the account's balance information.

For the exact schema of the `balance` object, see [Balance schema](https://dapi-api.readme.io/docs/get-balance#account-schema). | --- #### data.getAccountTransactions Method is used to retrieve transactions that user has performed over a specific period of time from their bank account. The transaction list is unfiltered, meaning the response will contain all the transactions performed by the user (not just the transactions performed using your app). Date range of the transactions that can be retrieved varies for each bank. The range supported by the users bank is shown in the response parameter `transactionRange` of Get Accounts Metadata endpoint. ##### Method Description ``` async getTransactions(accessToken: string, userSecret: string, accountID: string, fromDate: Date, toDate: Date, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accountID**
_REQUIRED_ | `string` | The bank account ID which its balance is requested.
Retrieved from one of the accounts returned from the `GetAccounts` method. | | **fromDate**
_REQUIRED_ | `Date` | The start date of the transactions wanted.
It should be in this format `YYYY-MM-DD`. | | **toDate**
_REQUIRED_ | `Date` | The end date of the transactions wanted.
It should be in this format `YYYY-MM-DD`. | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be valid if the status is `done`: | Parameter | Type | Description | | ------------ | ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | transactions | `ITransaction[]` | Array containing the transactional data for the specified account within the specified period.

For the exact schema of the `transactions` array, see [Transaction schema](https://dapi-api.readme.io/docs/get-transactions#transaction-schema). | --- #### payment.getBeneficiaries Method is used to retrieve list of all the beneficiaries already added for a user within a financial institution. ##### Method Description ``` async getBeneficiaries(accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | ------------- | ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | beneficiaries | `IBeneficiary[]` | An array containing the beneficiary information.

For the exact schema of the `beneficiaries` array, see [Beneficiary schema](https://dapi-api.readme.io/docs/get-beneficiaries#beneficiaries-schema). | --- #### payment.createBeneficiary Method is used to create a Beneficiary for a user within a financial institution. ##### Method Description ``` async createBeneficiary(beneficiary: ICBBeneficiary, accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **beneficiary**
_REQUIRED_ | `ICBBeneficiary` | An object that contains info about the beneficiary that should be added. | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ##### Response Method returns only the fields defined in the BaseResponse. --- #### payment.createTransfer Method is used to initiate a new payment from one account to another account. ##### Important We suggest you use `transferAutoflow` method instead to initiate a payment. `transferAutoflow` abstracts all the validations and processing logic, required to initiate a transaction using `createTransfer` method. You can read about `transferAutoflow` further in the document. ##### Method Description ``` async createTransfer(transfer: ITransfer, accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **transfer**
_REQUIRED_ | `ITransfer` | An object that contains info about the transfer that should be initiated. | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ###### ITransfer Object | Parameter | Type | Description | | --------------------------------- | -------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **senderID**
_REQUIRED_ | `string` | The id of the account which the money should be sent from.
Retrieved from one of the accounts array returned from the getAccounts method. | | **amount**
_REQUIRED_ | `number` | The amount of money which should be sent. | | **receiverID**
_OPTIONAL_ | `string` | The id of the beneficiary which the money should be sent to.
Retrieved from one of the beneficiaries array returned from the getBeneficiaries method.
Needed only when creating a transfer from a bank that requires the receiver to be already registered as a beneficiary to perform a transaction. | | **name**
_OPTIONAL_ | `string` | The name of receiver.
Needed only when creating a transfer from a bank that handles the creation of beneficiaries on its own, internally, and doesn't require the receiver to be already registered as a beneficiary to perform a transaction. | | **accountNumber**
_OPTIONAL_ | `string` | The Account Number of the receiver's account.
Needed only when creating a transfer from a bank that handles the creation of beneficiaries on its own, internally, and doesn't require the receiver to be already registered as a beneficiary to perform a transaction. | | **iban**
_OPTIONAL_ | `string` | The IBAN of the receiver's account.
Needed only when creating a transfer from a bank that handles the creation of beneficiaries on its own, internally, and doesn't require the receiver to be already registered as a beneficiary to perform a transaction. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------- | | reference | `string` | Transaction reference string returned by the bank. | --- #### payment.transferAutoflow Method is used to initiate a new payment from one account to another account, without having to care nor handle any special cases or scenarios. ##### Method Description ``` async transferAutoFlow(transfer: ITransferAutoflow, accessToken: string, userSecret: string, operationID?: string, userInputs?: IUserInputs[]) ``` ##### Input Parameters | Parameter | Type | Description | | ------------------------------- | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **transfer**
_REQUIRED_ | `ITransferAutoflow` | An object that contains info about the transfer that should be initiated, and any other details that's used to automate the operation. | | **accessToken**
_REQUIRED_ | `string` | Access Token obtained using the `exchangeToken` method. | | **userSecret**
_REQUIRED_ | `string` | The `userSecret` from a user’s successful log in to **Connect**. | | **operationID**
_OPTIONAL_ | `string` | The `operationID` from a previous call's response.
Required only when resuming a previous call that responded with `user_input_required` status, to provided user inputs. | | **userInputs**
_OPTIONAL_ | `IUserInputs[]` | Array of `IUserInputs` objects, that are needed to complete this operation.
Required only if a previous call responded with `user_input_required` status.

You can read more about user inputs specification on [Specify User Input](https://dapi-api.readme.io/docs/specify-user-input) | ###### UserInput Object | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | id | `string` | Type of input required.

You can read more about user input types on [User Input Types](https://dapi-api.readme.io/docs/user-input-types). | | index | `number` | Is used in case more than one user input is requested.
Will always be 0 If only one input is requested. | | answer | `string` | User input that must be submitted. | ###### ITransferAutoflow Object | Parameter | Type | Description | | ------------------------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | | **senderID**
_REQUIRED_ | `string` | The id of the account which the money should be sent from.
Retrieved from one of the accounts array returned from the getAccounts method. | | **amount**
_REQUIRED_ | `number` | The amount of money which should be sent. | | **beneficiary**
_REQUIRED_ | `IBeneficiary` | An object that holds the info about the beneficiary which the money should be sent to. | ##### Response In addition to the fields described in the BaseResponse, it has the following fields, which will only be returned if the status is `done`: | Parameter | Type | Description | | --------- | -------- | -------------------------------------------------- | | reference | `string` | Transaction reference string returned by the bank. | ---