create nest structure for cameras

src/nest-structure.ts

@@ -0,0 +1,42 @@
+import { Logging, PlatformConfig } from 'homebridge';
+import { NestEndpoints, handleError } from './nest-endpoints';
+import { Face } from './models/structure-info';
+import { CameraInfo } from './models/camera-info';
+
+export class NestStructure {
+  private config: PlatformConfig;
+  private readonly log: Logging;
+  public id = '';
+  private apiHost = '';
+  private endpoints: NestEndpoints;
+  private faces: Array<Face> = [];
+
+  constructor(cameraInfo: CameraInfo, config: PlatformConfig, log: Logging) {
+    this.id = cameraInfo.nest_structure_id.replace('structure.', '');
+    this.apiHost = cameraInfo.nexus_api_nest_domain_host;
+    this.config = config;
+    this.log = log;
+    this.endpoints = new NestEndpoints(config.fieldTest);
+  }
+
+  async getFaces(): Promise<Array<Face>> {
+    if (this.faces.length > 0) {
+      return this.faces;
+    }
+    try {
+      const response = await this.endpoints.sendRequest(
+        this.config.access_token,
+        `https://${this.apiHost}`,
+        `/faces/${this.id}`,
+        'GET',
+      );
+      if (response && response.length > 0) {
+        this.faces = response;
+        return response;
+      }
+    } catch (error) {
+      handleError(this.log, error, 'Error getting faces');
+    }
+    return [];
+  }
+}