[QUERY] App cannot reply in private channel given all_resources: true

[tzuo9]

Hi team,

I have set all_resources: true in my trigger and the app can start replying once it's invited to a public channel but the trigger is not working when i tag the app in private channel even if i add the bot. I saw no logging using slack activity --tail when i tag the app in private channel. Is this expected?

I found in doc that

Alternatively, you can set all_resources to true The channel_ids field will no longer be required, and the event will now trigger in all channels in the workspace the app is a part of.

wonder here what should i do if I want the bot be able to reply in private channel upon invitation

Thank you!

[WilliamBergamin]

Hi @tzuo9 thanks for writing in 💯

I was able to reproduce this on my end using the following trigger

import { Trigger } from "deno-slack-sdk/types.ts";
import { TriggerEventTypes, TriggerTypes } from "deno-slack-api/mod.ts";
import SimpleWorkflow from "../workflows/simple_workflow.ts";

const appMentionedTrigger: Trigger<typeof SimpleWorkflow.definition> = {
  type: TriggerTypes.Event,
  name: "App mention trigger",
  description: "A sample trigger",
  workflow: `#/workflows/${SimpleWorkflow.definition.callback_id}`,
  event: {
    event_type: TriggerEventTypes.AppMentioned,
    all_resources: true,
  },
  inputs: {},
};

export default appMentionedTrigger;

I initially was not receiving any app_mentioned events in public or private channels, once I added a link trigger to trigger to my app then it started receiving app_mentioned events 🤔

I'm not sure how consistent this issue is but I raised this internally to try and figure out what is going on, you can also email our developer support team: [email protected] to inform them of this behavior

[WilliamBergamin]

@tzuo9 after further investigation I can not reproduce your behavior, everything seems to be working as expected on my end

Here is the app I've been using

// manifest.ts
import { Manifest } from "deno-slack-sdk/mod.ts";
import SampleWorkflow from "./workflows/sample_workflow.ts";

export default Manifest({
  name: "app-mention-as-a-trigger-1",
  description: "A template for building Slack apps with Deno",
  icon: "assets/default_new_app_icon.png",
  workflows: [SampleWorkflow],
  outgoingDomains: [],
  botScopes: [
    "commands",
    "chat:write",
    "chat:write.public",
    "app_mentions:read",
  ],
});

// workflows/sample_workflow.ts
import { DefineWorkflow, Schema } from "deno-slack-sdk/mod.ts";
import { SampleFunctionDefinition } from "../functions/sample_function.ts";

const SampleWorkflow = DefineWorkflow({
  callback_id: "sample_workflow",
  title: "Sample workflow",
  description: "A sample workflow",
  input_parameters: {
    properties: {
      channel: {
        type: Schema.slack.types.channel_id,
      },
      user: {
        type: Schema.slack.types.user_id,
      },
    },
    required: ["channel", "user"],
  },
});

const sampleFunctionStep = SampleWorkflow.addStep(SampleFunctionDefinition, {
  message: "hello",
  user: SampleWorkflow.inputs.user,
});

SampleWorkflow.addStep(Schema.slack.functions.SendMessage, {
  channel_id: SampleWorkflow.inputs.channel,
  message: sampleFunctionStep.outputs.updatedMsg,
});

export default SampleWorkflow;

// triggers/app_mentioned_trigger.ts
import { Trigger } from "deno-slack-sdk/types.ts";
import {
	TriggerContextData,
	TriggerEventTypes,
	TriggerTypes,
} from "deno-slack-api/mod.ts";
import SampleWorkflow from "../workflows/sample_workflow.ts";

const appMentionedTrigger: Trigger<typeof SampleWorkflow.definition> = {
	type: TriggerTypes.Event,
	name: "Sample trigger",
	description: "A sample trigger",
	workflow: `#/workflows/${SampleWorkflow.definition.callback_id}`,
	event: {
		event_type: TriggerEventTypes.AppMentioned,
		all_resources: true,
	},
	inputs: {
		channel: {
			value: TriggerContextData.Shortcut.channel_id,
		},
		user: {
			value: TriggerContextData.Shortcut.user_id,
		},
	},
};

export default appMentionedTrigger;

// functions/sample_function.ts
import { DefineFunction, Schema, SlackFunction } from "deno-slack-sdk/mod.ts";

export const SampleFunctionDefinition = DefineFunction({
  callback_id: "sample_function",
  title: "Sample function",
  description: "A sample function",
  source_file: "functions/sample_function.ts",
  input_parameters: {
    properties: {
      message: {
        type: Schema.types.string,
        description: "Message to be posted",
      },
      user: {
        type: Schema.slack.types.user_id,
        description: "The user invoking the workflow",
      },
    },
    required: ["message", "user"],
  },
  output_parameters: {
    properties: {
      updatedMsg: {
        type: Schema.types.string,
        description: "Updated message to be posted",
      },
    },
    required: ["updatedMsg"],
  },
});

export default SlackFunction(
  SampleFunctionDefinition,
  ({ inputs }) => {
    const updatedMsg = `:wave: ` + `<@${inputs.user}>` +
      ` submitted the following message: \n\n>${inputs.message}`;

    return { outputs: { updatedMsg } };
  },
);

1. run slack run (install app and create the trigger)
2. create a private channel
3. Add the app to the channel
4. Send @app-mention-as-a-trigger (local) hello to the channel
5. The app responds as expected in the channel

If you're app is using addition configurations it may be interfering with the event dispatching