feat(booter-lb3app): bind lb3 models

Co-authored-by: nabdelgadir <[email protected]>"

packages/booter-lb3app/src/__tests__/acceptance/booter-lb3app.acceptance.ts

@@ -242,4 +242,20 @@ describe('booter-lb3app', () => {
       expect(ds).to.eql(expected);
     });
   });
+
+  context('binding LoopBack 3 models', () => {
+    before(async () => {
+      ({app, client} = await setupApplication({
+        lb3app: {path: '../fixtures/app-with-model'},
+      }));
+    });
+
+    it('binds model to the context', async () => {
+      const expected = require('../../../fixtures/app-with-model').models.Color;
+      const modelBindings = app.findByTag('lb3-model');
+      const key = modelBindings[0].key;
+      const model = await app.get(key);
+      expect(model).to.eql(expected);
+    });
+  });
 });

packages/booter-lb3app/src/lb3app.booter.ts

@@ -73,6 +73,17 @@ export class Lb3AppBooter implements Booter {
       });
     }
 
+    const models = lb3App.models;
+    if (models) {
+      const visited: unknown[] = [];
+      Object.keys(models).forEach(key => {
+        const model = models[key];
+        if (visited.includes(model)) return;
+        visited.push(model);
+        this.app.bind(`lb3-models.${key}`).to(model).tag('lb3-model');
+      });
+    }
+
     // TODO(bajtos) Listen for the following events to update the OpenAPI spec:
     // - modelRemoted
     // - modelDeleted
@@ -149,4 +160,6 @@ export interface Lb3AppBooterOptions {
 interface Lb3Application extends ExpressApplication {
   handler(name: 'rest'): ExpressRequestHandler;
   dataSources?: {[name: string]: unknown};
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  models?: {[name: string]: any};
 }