Slack file upload action

This action uploads file(s) to slack using v2 files API.

Inputs

token

Required Slack app token. See Internal app tokens

1. Create app
2. Add files:write and files:read permission
3. Install app to your workspase
4. Invite bot to required channels /invite <botname>
5. Use bot token from OAuth & Permissions page

files

Required List of files including file path and filename remember json wont work with backslashes so you might need ${{ toJSON(variable) }}

channel_id

THIS IS NOT A CHANNEL NAME Slack channel ID for upload

ID is included in the URL of a channel in web version.

thread_ts

Slack thread for upload

initial_comment

The message text introducing the file in specified channels.

Example usage

on: [push]

jobs:
  slack_upload_job:
    runs-on: ubuntu-latest
    name: Upload test file
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - run: |
          mkdir dir
          echo "Test file " > dir/test.txt
      - name: Upload to slack step
        uses: vaporif/slack-file-upload-action@v1
        with:
          token: ${{ secrets.SLACK_TOKEN }}
          files: >
            [
              {"file": "./dir/test.txt", "filename": "testfile.txt"},
              {"file": "./dir/test.txt", "filename": "testfile.txt"}
            ]
          channel_id: C06S5FLDSN4