merge refactor/v2

lib/explorers/telegraf-scene.explorer.ts

@@ -1,73 +0,0 @@
-import { Inject, Injectable, OnModuleInit } from '@nestjs/common';
-import { DiscoveryService } from '@nestjs/core';
-import { MetadataScanner } from '@nestjs/core/metadata-scanner';
-import { InstanceWrapper } from '@nestjs/core/injector/instance-wrapper';
-import { BaseScene as Scene, Stage, Telegraf } from 'telegraf';
-import { TelegrafMetadataAccessor } from '../telegraf.metadata-accessor';
-
-@Injectable()
-export class TelegrafSceneExplorer implements OnModuleInit {
-  private readonly stage = new Stage([]);
-
-  constructor(
-    @Inject(Telegraf)
-    private readonly telegraf: Telegraf<never>,
-    private readonly discoveryService: DiscoveryService,
-    private readonly metadataAccessor: TelegrafMetadataAccessor,
-    private readonly metadataScanner: MetadataScanner,
-  ) {
-    this.telegraf.use(this.stage.middleware());
-  }
-
-  onModuleInit(): void {
-    this.explore();
-  }
-
-  private explore(): void {
-    const sceneClasses = this.filterSceneClasses();
-
-    sceneClasses.forEach((wrapper) => {
-      const { instance } = wrapper;
-
-      const sceneId = this.metadataAccessor.getSceneMetadata(
-        instance.constructor,
-      );
-      const scene = new Scene(sceneId);
-      this.stage.register(scene);
-
-      const prototype = Object.getPrototypeOf(instance);
-      this.metadataScanner.scanFromPrototype(
-        instance,
-        prototype,
-        (methodKey: string) =>
-          this.registerIfListener(scene, instance, methodKey),
-      );
-    });
-  }
-
-  private filterSceneClasses(): InstanceWrapper[] {
-    return this.discoveryService
-      .getProviders()
-      .filter((wrapper) => wrapper.instance)
-      .filter((wrapper) =>
-        this.metadataAccessor.isScene(wrapper.instance.constructor),
-      );
-  }
-
-  private registerIfListener(
-    scene: Scene<never>,
-    instance: Record<string, Function>,
-    methodKey: string,
-  ): void {
-    const methodRef = instance[methodKey];
-    const middlewareFn = methodRef.bind(instance);
-
-    const listenerMetadata = this.metadataAccessor.getListenerMetadata(
-      methodRef,
-    );
-    if (!listenerMetadata) return;
-
-    const { method, args } = listenerMetadata;
-    (scene[method] as any)(...args, middlewareFn);
-  }
-}