n8n/packages/nodes-base/nodes/HomeAssistant/HomeAssistant.node.ts

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import {
IExecuteFunctions,
} from 'n8n-core';
import {
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ICredentialsDecrypted,
ICredentialTestFunctions,
IDataObject,
INodeExecutionData,
INodeType,
INodeTypeDescription,
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NodeCredentialTestResult,
} from 'n8n-workflow';
import {
configOperations,
} from './ConfigDescription';
import {
serviceFields,
serviceOperations,
} from './ServiceDescription';
import {
stateFields,
stateOperations,
} from './StateDescription';
import {
eventFields,
eventOperations,
} from './EventDescription';
import {
logFields,
logOperations,
} from './LogDescription';
import {
templateFields,
templateOperations,
} from './TemplateDescription';
import {
historyFields,
historyOperations,
} from './HistoryDescription';
import {
cameraProxyFields,
cameraProxyOperations,
} from './CameraProxyDescription';
import {
homeAssistantApiRequest,
} from './GenericFunctions';
export class HomeAssistant implements INodeType {
description: INodeTypeDescription = {
displayName: 'Home Assistant',
name: 'homeAssistant',
icon: 'file:homeAssistant.svg',
group: ['output'],
version: 1,
subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
description: 'Consume Home Assistant API',
defaults: {
name: 'Home Assistant',
color: '#3578e5',
},
inputs: ['main'],
outputs: ['main'],
credentials: [
{
name: 'homeAssistantApi',
required: true,
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testedBy: 'homeAssistantApiTest',
},
],
properties: [
{
displayName: 'Resource',
name: 'resource',
type: 'options',
options: [
{
name: 'Camera Proxy',
value: 'cameraProxy',
},
{
name: 'Config',
value: 'config',
},
{
name: 'Event',
value: 'event',
},
// {
// name: 'History',
// value: 'history',
// },
{
name: 'Log',
value: 'log',
},
{
name: 'Service',
value: 'service',
},
{
name: 'State',
value: 'state',
},
{
name: 'Template',
value: 'template',
},
],
default: 'config',
description: 'Resource to consume.',
},
...cameraProxyOperations,
...cameraProxyFields,
...configOperations,
...eventOperations,
...eventFields,
...historyOperations,
...historyFields,
...logOperations,
...logFields,
...serviceOperations,
...serviceFields,
...stateOperations,
...stateFields,
...templateOperations,
...templateFields,
],
};
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methods = {
credentialTest: {
async homeAssistantApiTest(this: ICredentialTestFunctions, credential: ICredentialsDecrypted): Promise<NodeCredentialTestResult> {
const credentials = credential.data;
const options = {
method: 'GET',
headers: {
Authorization: `Bearer ${credentials!.accessToken}`,
},
uri: `${credentials!.ssl === true ? 'https' : 'http'}://${credentials!.host}:${ credentials!.port || '8123' }/api/`,
json: true,
timeout: 5000,
};
try {
const response = await this.helpers.request(options);
if (!response.message) {
return {
status: 'Error',
message: `Token is not valid: ${response.error}`,
};
}
} catch (error) {
return {
status: 'Error',
message: `${error.statusCode === 401 ? 'Token is' : 'Settings are'} not valid: ${error}`,
};
}
return {
status: 'OK',
message: 'Authentication successful!',
};
},
},
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const items = this.getInputData();
const returnData: IDataObject[] = [];
const length = items.length;
const resource = this.getNodeParameter('resource', 0) as string;
const operation = this.getNodeParameter('operation', 0) as string;
const qs: IDataObject = {};
let responseData;
for (let i = 0; i < length; i++) {
try {
if (resource === 'config') {
if (operation === 'get') {
responseData = await homeAssistantApiRequest.call(this, 'GET', '/config');
} else if (operation === 'check') {
responseData = await homeAssistantApiRequest.call(this, 'POST', '/config/core/check_config');
}
} else if (resource === 'service') {
if (operation === 'getAll') {
const returnAll = this.getNodeParameter('returnAll', i) as boolean;
responseData = await homeAssistantApiRequest.call(this, 'GET', '/services') as IDataObject[];
if (!returnAll) {
const limit = this.getNodeParameter('limit', i) as number;
responseData = responseData.slice(0, limit);
}
} else if (operation === 'call') {
const domain = this.getNodeParameter('domain', i) as string;
const service = this.getNodeParameter('service', i) as string;
const serviceAttributes = this.getNodeParameter('serviceAttributes', i) as {
attributes: IDataObject[],
};
const body: IDataObject = {};
if (Object.entries(serviceAttributes).length) {
if (serviceAttributes.attributes !== undefined) {
serviceAttributes.attributes.map(
attribute => {
// @ts-ignore
body[attribute.name as string] = attribute.value;
},
);
}
}
responseData = await homeAssistantApiRequest.call(this, 'POST', `/services/${domain}/${service}`, body);
if (Array.isArray(responseData) && responseData.length === 0) {
responseData = {};
}
}
} else if (resource === 'state') {
if (operation === 'getAll') {
const returnAll = this.getNodeParameter('returnAll', i) as boolean;
responseData = await homeAssistantApiRequest.call(this, 'GET', '/states') as IDataObject[];
if (!returnAll) {
const limit = this.getNodeParameter('limit', i) as number;
responseData = responseData.slice(0, limit);
}
} else if (operation === 'get') {
const entityId = this.getNodeParameter('entityId', i) as string;
responseData = await homeAssistantApiRequest.call(this, 'GET', `/states/${entityId}`);
} else if (operation === 'upsert') {
const entityId = this.getNodeParameter('entityId', i) as string;
const state = this.getNodeParameter('state', i) as string;
const stateAttributes = this.getNodeParameter('stateAttributes', i) as {
attributes: IDataObject[],
};
const body = {
state,
attributes: {},
};
if (Object.entries(stateAttributes).length) {
if (stateAttributes.attributes !== undefined) {
stateAttributes.attributes.map(
attribute => {
// @ts-ignore
body.attributes[attribute.name as string] = attribute.value;
},
);
}
}
responseData = await homeAssistantApiRequest.call(this, 'POST', `/states/${entityId}`, body);
}
} else if (resource === 'event') {
if (operation === 'getAll') {
const returnAll = this.getNodeParameter('returnAll', i) as boolean;
responseData = await homeAssistantApiRequest.call(this, 'GET', '/events') as IDataObject[];
if (!returnAll) {
const limit = this.getNodeParameter('limit', i) as number;
responseData = responseData.slice(0, limit);
}
} else if (operation === 'create') {
const eventType = this.getNodeParameter('eventType', i) as string;
const eventAttributes = this.getNodeParameter('eventAttributes', i) as {
attributes: IDataObject[],
};
const body = {};
if (Object.entries(eventAttributes).length) {
if (eventAttributes.attributes !== undefined) {
eventAttributes.attributes.map(
attribute => {
// @ts-ignore
body[attribute.name as string] = attribute.value;
},
);
}
}
responseData = await homeAssistantApiRequest.call(this, 'POST', `/events/${eventType}`, body);
}
} else if (resource === 'log') {
if (operation === 'getErroLogs') {
responseData = await homeAssistantApiRequest.call(this, 'GET', '/error_log');
if (responseData) {
responseData = {
errorLog: responseData,
};
}
} else if (operation === 'getLogbookEntries') {
const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
let endpoint = '/logbook';
if (Object.entries(additionalFields).length) {
if (additionalFields.startTime) {
endpoint = `/logbook/${additionalFields.startTime}`;
}
if (additionalFields.endTime) {
qs.end_time = additionalFields.endTime;
}
if (additionalFields.entityId) {
qs.entity = additionalFields.entityId;
}
}
responseData = await homeAssistantApiRequest.call(this, 'GET', endpoint, {}, qs);
}
} else if (resource === 'template') {
if (operation === 'create') {
const body = {
template: this.getNodeParameter('template', i) as string,
};
responseData = await homeAssistantApiRequest.call(this, 'POST', '/template', body);
if (responseData) {
responseData = { renderedTemplate: responseData };
}
}
} else if (resource === 'history') {
if (operation === 'getAll') {
const returnAll = this.getNodeParameter('returnAll', i) as boolean;
const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
let endpoint = '/history/period';
if (Object.entries(additionalFields).length) {
if (additionalFields.startTime) {
endpoint = `/history/period/${additionalFields.startTime}`;
}
if (additionalFields.endTime) {
qs.end_time = additionalFields.endTime;
}
if (additionalFields.entityIds) {
qs.filter_entity_id = additionalFields.entityIds;
}
if (additionalFields.minimalResponse === true) {
qs.minimal_response = additionalFields.minimalResponse;
}
if (additionalFields.significantChangesOnly === true) {
qs.significant_changes_only = additionalFields.significantChangesOnly;
}
}
responseData = await homeAssistantApiRequest.call(this, 'GET', endpoint, {}, qs) as IDataObject[];
if (!returnAll) {
const limit = this.getNodeParameter('limit', i) as number;
responseData = responseData.slice(0, limit);
}
}
} else if (resource === 'cameraProxy') {
if (operation === 'getScreenshot') {
const cameraEntityId = this.getNodeParameter('cameraEntityId', i) as string;
const dataPropertyNameDownload = this.getNodeParameter('binaryPropertyName', i) as string;
const endpoint = `/camera_proxy/${cameraEntityId}`;
let mimeType: string | undefined;
responseData = await homeAssistantApiRequest.call(this, 'GET', endpoint, {}, {}, undefined, {
encoding: null,
resolveWithFullResponse: true,
});
const newItem: INodeExecutionData = {
json: items[i].json,
binary: {},
};
if (mimeType === undefined && responseData.headers['content-type']) {
mimeType = responseData.headers['content-type'];
}
if (items[i].binary !== undefined) {
// Create a shallow copy of the binary data so that the old
// data references which do not get changed still stay behind
// but the incoming data does not get changed.
Object.assign(newItem.binary, items[i].binary);
}
items[i] = newItem;
const data = Buffer.from(responseData.body as string);
items[i].binary![dataPropertyNameDownload] = await this.helpers.prepareBinaryData(data, 'screenshot.jpg', mimeType);
}
}
} catch (error) {
if (this.continueOnFail()) {
if (resource === 'cameraProxy' && operation === 'get') {
items[i].json = { error: error.message };
} else {
returnData.push({ error: error.message });
}
continue;
}
throw error;
}
Array.isArray(responseData)
? returnData.push(...responseData)
: returnData.push(responseData);
}
if (resource === 'cameraProxy' && operation === 'getScreenshot') {
return this.prepareOutputData(items);
} else {
return [this.helpers.returnJsonArray(returnData)];
}
}
}