first commit

packages/nodes-base/credentials/DiscourseApi.credentials.ts

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+import type {
+	ICredentialDataDecryptedObject,
+	ICredentialTestRequest,
+	ICredentialType,
+	IHttpRequestOptions,
+	INodeProperties,
+} from 'n8n-workflow';
+
+export class DiscourseApi implements ICredentialType {
+	name = 'discourseApi';
+
+	displayName = 'Discourse API';
+
+	documentationUrl = 'discourse';
+
+	properties: INodeProperties[] = [
+		{
+			displayName: 'URL',
+			name: 'url',
+			required: true,
+			type: 'string',
+			default: '',
+		},
+		{
+			displayName: 'API Key',
+			name: 'apiKey',
+			required: true,
+			type: 'string',
+			typeOptions: { password: true },
+			default: '',
+		},
+		{
+			displayName: 'Username',
+			name: 'username',
+			required: true,
+			type: 'string',
+			default: '',
+		},
+	];
+
+	async authenticate(
+		credentials: ICredentialDataDecryptedObject,
+		requestOptions: IHttpRequestOptions,
+	): Promise<IHttpRequestOptions> {
+		requestOptions.headers = {
+			'Api-Key': credentials.apiKey,
+			'Api-Username': credentials.username,
+		};
+
+		if (requestOptions.method === 'GET') {
+			delete requestOptions.body;
+		}
+
+		return requestOptions;
+	}
+
+	test: ICredentialTestRequest = {
+		request: {
+			baseURL: '={{$credentials.url}}',
+			url: '/groups.json',
+			method: 'GET',
+		},
+	};
+}