feat!(): add custom execution context

lib/utils/create-scene-listener-decorator.util.ts

@@ -0,0 +1,18 @@
+import { SetMetadata } from '@nestjs/common';
+import { BaseScene as Scene } from 'telegraf';
+import { ComposerMethodArgs, SceneMethods } from '../telegraf.types';
+import { UPDATE_LISTENER_METADATA } from '../telegraf.constants';
+import { ListenerMetadata } from '../interfaces';
+
+export function createSceneListenerDecorator<Method extends SceneMethods>(
+  method: Method,
+) {
+  return (
+    ...args: ComposerMethodArgs<Scene<never>, Method>
+  ): MethodDecorator => {
+    return SetMetadata(UPDATE_LISTENER_METADATA, {
+      method,
+      args,
+    } as ListenerMetadata);
+  };
+}

lib/utils/create-update-listener-decorator.util.ts

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+import { SetMetadata } from '@nestjs/common';
+import { Composer } from 'telegraf';
+import { ComposerMethodArgs, UpdateMethods } from '../telegraf.types';
+import { UPDATE_LISTENER_METADATA } from '../telegraf.constants';
+import { ListenerMetadata } from '../interfaces';
+
+export function createUpdateListenerDecorator<Method extends UpdateMethods>(
+  method: Method,
+) {
+  return (
+    ...args: ComposerMethodArgs<Composer<never>, Method>
+  ): MethodDecorator => {
+    return SetMetadata(UPDATE_LISTENER_METADATA, {
+      method,
+      args,
+    } as ListenerMetadata);
+  };
+}

lib/utils/index.ts

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+export * from './create-update-listener-decorator.util';
+export * from './create-scene-listener-decorator.util';

lib/utils/param-decorator.util.ts

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+import { assignMetadata, PipeTransform, Type } from '@nestjs/common';
+import { TelegrafParamtype } from '../enums/telegraf-paramtype.enum';
+import { LISTENER_ARGS_METADATA } from '../telegraf.constants';
+
+export function createTelegrafParamDecorator(
+  paramtype: TelegrafParamtype,
+): (...pipes: (Type<PipeTransform> | PipeTransform)[]) => ParameterDecorator {
+  return (...pipes: (Type<PipeTransform> | PipeTransform)[]) => (
+    target,
+    key,
+    index,
+  ) => {
+    const args =
+      Reflect.getMetadata(LISTENER_ARGS_METADATA, target.constructor, key) ||
+      {};
+    Reflect.defineMetadata(
+      LISTENER_ARGS_METADATA,
+      assignMetadata(args, paramtype, index, undefined, ...pipes),
+      target.constructor,
+      key,
+    );
+  };
+}
+
+export const createPipesTelegrafParamDecorator = (
+  paramtype: TelegrafParamtype,
+) => (
+  ...pipes: (Type<PipeTransform> | PipeTransform)[]
+): ParameterDecorator => (target, key, index) => {
+  const args =
+    Reflect.getMetadata(LISTENER_ARGS_METADATA, target.constructor, key) || {};
+
+  Reflect.defineMetadata(
+    LISTENER_ARGS_METADATA,
+    assignMetadata(args, paramtype, index, undefined, ...pipes),
+    target.constructor,
+    key,
+  );
+};