feat(decorators): TelegrafAction added

lib/decorators/index.ts

@@ -10,3 +10,4 @@ export * from './telegraf-mention.decorator';
 export * from './telegraf-phone.decorator';
 export * from './telegraf-hashtag.decorator';
 export * from './telegraf-cashtag.decorator';
+export * from './telegraf-action.decorator';

lib/decorators/telegraf-action.decorator.ts

@@ -0,0 +1,13 @@
+import { SetMetadata } from '@nestjs/common';
+import { DECORATORS } from '../telegraf.constants';
+import { HearsTriggers } from 'telegraf';
+
+/**
+ * Registers middleware for handling callback_data actions with regular expressions.
+ * @param triggers Triggers
+ *
+ * https://telegraf.js.org/#/?id=action
+ */
+export function TelegrafAction(triggers: HearsTriggers): MethodDecorator {
+  return SetMetadata(DECORATORS.ACTION, { triggers });
+}

lib/telegraf-metadata.accessor.ts

@@ -122,4 +122,15 @@ export class TelegrafMetadataAccessor {
   getTelegrafCashtagMetadata(target: Type<any> | Function) {
     return this.reflector.get(DECORATORS.CASHTAG, target);
   }
+
+  isTelegrafAction(target: Type<any> | Function): boolean {
+    if (!target) {
+      return false;
+    }
+    return !!this.reflector.get(DECORATORS.ACTION, target);
+  }
+
+  getTelegrafActionMetadata(target: Type<any> | Function) {
+    return this.reflector.get(DECORATORS.ACTION, target);
+  }
 }

lib/telegraf.constants.ts

@@ -15,4 +15,5 @@ export const DECORATORS = {
   PHONE: `${DECORATORS_PREFIX}/PHONE`,
   HASHTAG: `${DECORATORS_PREFIX}/HASHTAG`,
   CASHTAG: `${DECORATORS_PREFIX}/CASHTAG`,
+  ACTION: `${DECORATORS_PREFIX}/ACTION`,
 };

lib/telegraf.explorer.ts

@@ -87,6 +87,11 @@ export class TelegrafExplorer implements OnModuleInit {
               instance[key],
             );
             this.handleTelegrafCashtag(instance, key, telegraf, metadata);
+          } else if (this.metadataAccessor.isTelegrafAction(instance[key])) {
+            const metadata = this.metadataAccessor.getTelegrafActionMetadata(
+              instance[key],
+            );
+            this.handleTelegrafAction(instance, key, telegraf, metadata);
           }
         },
       );
@@ -202,4 +207,14 @@ export class TelegrafExplorer implements OnModuleInit {
     // @ts-ignore
     telegraf.cashtag(metadata.cashtag, instance[key].bind(instance));
   }
+
+  handleTelegrafAction(
+    instance: object,
+    key: string,
+    telegraf: Telegraf<ContextMessageUpdate>,
+    metadata: any,
+  ) {
+    // @ts-ignore
+    telegraf.cashtag(metadata.triggers, instance[key].bind(instance));
+  }
 }