SLACK INTEGRATION GUIDE
Simple Task Management v1.8.0

1) WHAT THIS INTEGRATION DOES
- Create tasks from Slack using a slash command.
- Assign those tasks to mapped WordPress users.
- Send Slack notification when a task is assigned.
- Works on Slack Free plan.

2) PREREQUISITES
- WordPress site must be public and HTTPS.
- Plugin v1.8.0 installed and active.
- Admin access to WordPress and Slack workspace.

3) WORDPRESS SETUP (FIRST)
1. Open WordPress Admin -> Task Manager -> Settings.
2. Go to section: Slack Integration.
3. Enable:
   - Enable Slack Integration
   - Allow Task Create From Slack Command
   - Notify On Assignment
4. Copy Slack Command Endpoint shown in settings.

Example endpoint:
https://yourdomain.com/wp-json/stm/v1/slack-command

4) CREATE SLACK APP
1. Open: https://api.slack.com/apps
2. Click Create New App -> From scratch.
3. Enter app name (example: Task Manager Bot).
4. Select your workspace.

5) CREATE SLASH COMMAND
1. In Slack app settings, open Slash Commands.
2. Click Create New Command.
3. Command example: /taskassign
4. Request URL: your plugin endpoint URL.
5. Add short description and usage hint.
6. Save.

6) ENABLE BOT TOKEN (FOR NOTIFICATIONS)
1. Open Slack app -> OAuth & Permissions.
2. Under Bot Token Scopes, add: chat:write
3. Click Install to Workspace (or Reinstall if prompted).
4. Copy Bot User OAuth Token (starts with xoxb-).

7) GET SIGNING SECRET
1. Open Slack app -> Basic Information.
2. Copy Signing Secret from App Credentials.

8) GET CHANNEL ID
1. Open Slack channel in web app.
2. Copy channel ID from URL (example: C0123456789).
3. If private channel, invite the app first.

9) FILL PLUGIN SLACK SETTINGS
Back in Task Manager -> Settings -> Slack Integration:
1. Paste Slack Signing Secret.
2. Paste Slack Bot Token (xoxb-...).
3. Enter Slack Channel ID (C...).
4. Save settings.

10) MAP USERS (REQUIRED)
In User Mapping (WordPress -> Slack User ID):
1. For each WordPress user, set Slack User ID (U...).
2. Save settings.

How to get Slack User ID:
- Open member profile in Slack and copy member ID.

11) SLACK COMMAND FORMAT
Use this format in Slack:
@username|Task title|Description|due:YYYY-MM-DD|priority:high|reward:20

Notes:
- priority allowed: low, medium, high
- due and reward are optional
- if reward missing, plugin default reward is used

Example:
@aman|Prepare monthly report|Collect data and submit summary|due:2026-03-10|priority:high|reward:30

12) WHAT HAPPENS AFTER COMMAND
- Plugin verifies Slack request signature.
- Plugin checks allowed channel (if channel ID is set).
- Plugin resolves assignee using mapping.
- Task is created in WordPress.
- Slack assignment notification is posted.

13) TROUBLESHOOTING
A) Invalid Slack signature
- Recheck Signing Secret in plugin settings.
- Verify slash command Request URL is exact.

B) Command not allowed in this channel
- Use configured channel or update Slack Channel ID.

C) Assignee not mapped
- Add Slack user ID (U...) in mapping table.

D) Notifications not posting
- Confirm bot token starts with xoxb-
- Confirm chat:write scope is added
- Reinstall app after scope change
- Invite app to the target channel

E) Endpoint not reachable
- Site must be public via HTTPS
- Check firewall/security plugin rules for /wp-json/

14) SECURITY BEST PRACTICES
- Keep Signing Secret and Bot Token private.
- Rotate tokens if exposed.
- Restrict command usage to one channel.
- Keep WordPress and plugin updated.

15) IMPORTANT OFFICIAL LINKS
Slack apps:
https://api.slack.com/apps

Slash commands:
https://api.slack.com/interactivity/slash-commands

Verify Slack requests:
https://api.slack.com/authentication/verifying-requests-from-slack

chat.postMessage API:
https://api.slack.com/methods/chat.postMessage

OAuth v2:
https://api.slack.com/authentication/oauth-v2

Slack scopes:
https://api.slack.com/scopes

WordPress REST API:
https://developer.wordpress.org/rest-api/

16) QUICK CHECKLIST
[ ] Plugin v1.8.0 active
[ ] Slack integration enabled
[ ] Slash command created
[ ] Endpoint URL set
[ ] Signing secret set
[ ] Bot token set
[ ] Channel ID set
[ ] User mapping completed
[ ] Test command successful