Fix GitHub App detection logic to use bot API instead of fallback

[ishaileshpant]

🔧 Fix GitHub App Detection Logic

Problem

The bot API was still failing with "FUNCTION_INVOCATION_FAILED" error because it was incorrectly falling back to the user token method instead of using the configured GitHub App.

Root Cause

The code was still checking for GITHUB_APP_INSTALLATION_ID as a required environment variable, causing it to fall back to the user token method instead of using the GitHub App that's already configured in Vercel.

Solution

• ✅ Removed GITHUB_APP_INSTALLATION_ID requirement from configuration check
• ✅ Added dynamic installation ID lookup for prepguides organization
• ✅ Ensures bot API uses GitHub App instead of falling back to user token method
• ✅ Proper GitHub App initialization with dynamic installation discovery

Technical Changes

// Before - required GITHUB_APP_INSTALLATION_ID causing fallback
const isGitHubAppConfigured = process.env.GITHUB_APP_ID && process.env.GITHUB_APP_PRIVATE_KEY && process.env.GITHUB_APP_INSTALLATION_ID;

// After - only requires App ID and Private Key
const isGitHubAppConfigured = process.env.GITHUB_APP_ID && process.env.GITHUB_APP_PRIVATE_KEY;

// Dynamic installation ID lookup
const installations = await tempOctokit.apps.listInstallations();
const targetInstallation = installations.data.find(installation => 
    installation.account.login === 'prepguides'
);

How It Works

1. Checks for App ID and Private Key (which are configured in Vercel)
2. Creates app auth to get app token
3. Lists installations to find prepguides organization
4. Uses found installation ID to create authenticated Octokit instance
5. Creates PRs directly on origin repository using bot account

Files Changed

• api/github/create-content-pr.js - Fixed GitHub App detection and initialization logic

Impact

• 🎯 Resolves FUNCTION_INVOCATION_FAILED error
• 🚀 Uses GitHub App instead of falling back to user token method
• 🛡️ Creates PRs directly on origin repository using bot account
• 🔄 Maintains backward compatibility with explicit installation ID

Testing

• GitHub App detection now works with existing Vercel configuration
• Dynamic installation ID lookup implemented
• Bot API uses GitHub App instead of fallback method
• No linting errors

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
prepguides-dev	Ready	Preview	Comment	Oct 8, 2025 6:58pm

[ishaileshpant]

/approve

[github-actions]

🚀 Admin-Approved and Auto-Merged!

This PR has been automatically merged to main after admin approval by @ishaileshpant.

✅ **Status**: Merged and deployed
🔗 **Commit**: `2b1d36c9f4d6058f9cd0ae1e171d26f6be7cd8f5`
📅 **Merged at**: 2025-10-08T19:00:54.779Z
👤 **Approved by**: Admin/Maintainer/Owner

Thank you for your contribution! 🎉