First commit

Author: Pankil Joshi

credentials/ExampleCredentialsApi.credentials.ts

@@ -0,0 +1,103 @@
+import {
+	IAuthenticateGeneric,
+	ICredentialDataDecryptedObject,
+	ICredentialTestRequest,
+	ICredentialType,
+	IHttpRequestHelper,
+	IHttpRequestOptions,
+	INodeProperties,
+} from 'n8n-workflow';
+
+import setCookie from 'set-cookie-parser';
+
+export class LowcoderApi implements ICredentialType {
+	name = 'lowcoderApi';
+	displayName = 'Lowcoder API';
+	properties: INodeProperties[] = [
+        {
+			displayName: 'Cookie Token',
+			name: 'sessionToken',
+			type: 'hidden',
+
+			typeOptions: {
+				expirable: true,
+			},
+			default: '',
+		},
+		{
+			displayName: 'API Base URL',
+			name: 'url',
+			type: 'string',
+			default: '',
+		},
+        {
+			displayName: 'API Token',
+			name: 'apiToken',
+			type: 'string',
+			default: '',
+		},
+		{
+			displayName: 'Username',
+			name: 'username',
+			type: 'string',
+			default: '',
+		},
+		{
+			displayName: 'Password',
+			name: 'password',
+			type: 'string',
+			typeOptions: {
+				password: true,
+			},
+			default: '',
+		},
+	];
+
+    // method will only be called if "sessionToken" (the expirable property)
+	// is empty or is expired
+	async preAuthentication(this: IHttpRequestHelper, credentials: ICredentialDataDecryptedObject) {
+		// make reques to get session token
+		const url = credentials.url as string;
+		const options = {
+			method: 'POST',
+			url: `${url.endsWith('/') ? url.slice(0, -1) : url}/api/auth/form/login`,
+			body: {
+				loginId: credentials.username,
+				password: credentials.password,
+				register: "false",
+				source: "EMAIL",
+				authId: "EMAIL"
+			},
+			headers: {
+				LOWCODER_CE_SELFHOST_TOKEN: credentials.apiToken
+			},
+			returnFullResponse: true
+		} as IHttpRequestOptions;
+		try {
+			const request = (await this.helpers.httpRequest(options));
+			const tokenCookie = setCookie.parse(request.headers['set-cookie'])
+				.filter(cookie => cookie.name === 'LOWCODER_CE_SELFHOST_TOKEN');
+			return { sessionToken: tokenCookie[0]?.value };
+		} catch (e: any) {
+			var error = new Error(e.response.data.message ? e.response.data.message : e.error);
+			error.cause = options as any;
+			throw error;		
+		}
+	}
+
+	authenticate: IAuthenticateGeneric = {
+		type: 'generic',
+		properties: {
+			headers: {
+				'Cookie': '=LOWCODER_CE_SELFHOST_TOKEN={{$credentials.sessionToken}}',
+			},
+		},
+	};
+
+	test: ICredentialTestRequest = {
+		request: {
+			baseURL: '={{$credentials?.url}}',
+			url: 'api/users/me',
+		},
+	};
+}