first commit

packages/@n8n/nodes-langchain/credentials/ChromaSelfHostedApi.credentials.ts

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+import type {
+	IAuthenticateGeneric,
+	ICredentialTestRequest,
+	ICredentialType,
+	INodeProperties,
+} from 'n8n-workflow';
+
+export class ChromaSelfHostedApi implements ICredentialType {
+	name = 'chromaSelfHostedApi';
+
+	displayName = 'ChromaDB Self-Hosted';
+
+	documentationUrl = 'chroma';
+
+	properties: INodeProperties[] = [
+		{
+			displayName: 'Base URL',
+			name: 'baseUrl',
+			type: 'string',
+			default: 'http://localhost:8000',
+			placeholder: 'http://localhost:8000',
+			description:
+				'The URL of your ChromaDB instance. Note that path prefixes are not supported, so the URL must point directly to the instance root.',
+		},
+		{
+			displayName: 'Authentication',
+			name: 'authentication',
+			type: 'options',
+			options: [
+				{
+					name: 'None',
+					value: 'none',
+				},
+				{
+					name: 'API Key',
+					value: 'apiKey',
+				},
+				{
+					name: 'Token',
+					value: 'token',
+				},
+			],
+			default: 'none',
+		},
+		{
+			displayName: 'API Key',
+			name: 'apiKey',
+			type: 'string',
+			typeOptions: { password: true },
+			default: '',
+			displayOptions: {
+				show: {
+					authentication: ['apiKey'],
+				},
+			},
+		},
+		{
+			displayName: 'Token',
+			name: 'token',
+			type: 'string',
+			typeOptions: { password: true },
+			default: '',
+			displayOptions: {
+				show: {
+					authentication: ['token'],
+				},
+			},
+		},
+	];
+
+	authenticate: IAuthenticateGeneric = {
+		type: 'generic',
+		properties: {
+			headers: {
+				Authorization:
+					'={{$credentials.authentication === "apiKey" && $credentials.apiKey ? "Bearer " + $credentials.apiKey : ""}}',
+				'X-Chroma-Token':
+					'={{$credentials.authentication === "token" && $credentials.token ? $credentials.token : ""}}',
+			},
+		},
+	};
+
+	test: ICredentialTestRequest = {
+		request: {
+			baseURL: '={{$credentials.baseUrl}}',
+			url: '/api/v2/heartbeat',
+			method: 'GET',
+		},
+	};
+}