1. Login to slack app

• create a workspace

2. Create a Slack App

• Go to https://api.slack.com/apps
• Click "Create An App"
• Select "From scratch"
• Enter an App Name (e.g., "check blocked users") and select your workspace
• Click on "Create App"
• You will get 'Basic information' interface
• Under the 'Basic information', open "Add features and functionality"

3. Creating Bot

• Select "Bots".
• You will be redirected to "App Home".
• Under the "First, assign a scope to your bot token", click the button "Review Scopes to Add".
• You will be redirected to "OAuth & Permissions".
• Under the "OAuth & Permissions", scroll to "Scopes", open "Bot Token Scopes".
• Click on "Add an OAuth Scope".
• Add app_mentions:read To view messages (that directly mention @checkblockedusers in conversations).
• Add chat:write to (send messagae as @checkBlockedUser).
• Add channels:history(View messages and other content in public channels that checkusers has been added to)
• Scroll up to "OAuth Tokens for Your Workspace" and click on "Install to Workspace".

4. Get Your Bot Token

• Click on "Allow", you will be redirected to "OAuth and Permissions" again,
• Copy the "Bot User OAuth Token" and save it for later use in firebase functions.

5. Set Up Event Subscriptions

• In the left sidebar, click on "Event Subscriptions" and "Enable Events".
• In the Request URL, paste the webhook url, where you want to get events, i.e onRequest cloud function URL in our case. which well get afer step 6.
• Open "Subscribe to bot events", add app_mention:read
• Click "Save Changes" at the bottom of the page

6. Setup firebase cloud functions

• create onRequest firebase cloud fucntion and deploy it, copy the function url to paste in "Event subscription"

7. Add Your App to a Channel

• Open your Slack workspace
• Go to the channel where you want to add the bot
• Type /invite @YourBotName (replace with your bot's username)

8. Test bot

• Mention bot with text such as "@YourBotName abc" or "@YourBotName test@gmai.com".
• Your bot should respond with whether the user is blocked or not