feat: added typescript sample

pull/1/head
Pocco81 3 years ago
parent eef221fcc2
commit b08ad2ce94

@ -0,0 +1,110 @@
// src: https://github.com/n8n-io/n8n/blob/master/packages/core/src/Credentials.ts
import {
CredentialInformation,
ICredentialDataDecryptedObject,
ICredentials,
ICredentialsEncrypted,
} from 'n8n-workflow';
import { AES, enc } from 'crypto-js';
export class Credentials extends ICredentials {
/**
* Returns if the given nodeType has access to data
*/
hasNodeAccess(nodeType: string): boolean {
// eslint-disable-next-line no-restricted-syntax
for (const accessData of this.nodesAccess) {
if (accessData.nodeType === nodeType) {
return true;
}
}
return false;
}
/**
* Sets new credential object
*/
setData(data: ICredentialDataDecryptedObject, encryptionKey: string): void {
this.data = AES.encrypt(JSON.stringify(data), encryptionKey).toString();
}
/**
* Sets new credentials for given key
*/
setDataKey(key: string, data: CredentialInformation, encryptionKey: string): void {
let fullData;
try {
fullData = this.getData(encryptionKey);
} catch (e) {
fullData = {};
}
fullData[key] = data;
return this.setData(fullData, encryptionKey);
}
/**
* Returns the decrypted credential object
*/
getData(encryptionKey: string, nodeType?: string): ICredentialDataDecryptedObject {
if (nodeType && !this.hasNodeAccess(nodeType)) {
throw new Error(
`The node of type "${nodeType}" does not have access to credentials "${this.name}" of type "${this.type}".`,
);
}
if (this.data === undefined) {
throw new Error('No data is set so nothing can be returned.');
}
const decryptedData = AES.decrypt(this.data, encryptionKey);
try {
// eslint-disable-next-line @typescript-eslint/no-unsafe-return
return JSON.parse(decryptedData.toString(enc.Utf8));
} catch (e) {
throw new Error(
'Credentials could not be decrypted. The likely reason is that a different "encryptionKey" was used to encrypt the data.',
);
}
}
/**
* Returns the decrypted credentials for given key
*/
getDataKey(key: string, encryptionKey: string, nodeType?: string): CredentialInformation {
const fullData = this.getData(encryptionKey, nodeType);
if (fullData === null) {
throw new Error(`No data was set.`);
}
// eslint-disable-next-line no-prototype-builtins
if (!fullData.hasOwnProperty(key)) {
throw new Error(`No data for key "${key}" exists.`);
}
return fullData[key];
}
/**
* Returns the encrypted credentials to be saved
*/
getDataToSave(): ICredentialsEncrypted {
if (this.data === undefined) {
throw new Error(`No credentials were set to save.`);
}
return {
id: this.id,
name: this.name,
type: this.type,
data: this.data,
nodesAccess: this.nodesAccess,
};
}
}
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