firestore_index_automator 0.1.0

A CLI tool that wraps flutter run and automatically detects, parses, and deploys missing Firestore composite indexes — no more manual index creation.

FIA (Firestore Index Automator)

What is FIA?

FIA (Firestore Index Automator) is a CLI tool that wraps flutter run. It automatically detects missing Firestore composite indexes from your debug terminal, parses the required fields, and seamlessly deploys them to your Firebase project in the background—completely eliminating the need to manually click links and build indexes in the Firebase Console.

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The Problem

Every Flutter + Firebase developer knows the pain: you write a slightly complex Firestore query, run your app, and immediately hit a FAILED_PRECONDITION error.

The query requires an index. You can create it here: https://console.firebase.google.com/...

You have to scroll up in your terminal, Ctrl+Click the link, wait for the Firebase Console to load, click "Create Index", wait 5 minutes, and then restart your app. If you have 10 complex queries, you have to do this 10 times. It completely breaks your development flow.

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Installation

Install the package globally via dart pub:

dart pub global activate firestore_index_automator

Make sure your system's PATH is configured to run global Dart executables.

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Prerequisites

FIA acts as a bridge between Flutter and the Firebase CLI. Ensure you have the following installed and configured:

1. Flutter SDK (>=3.10.0)
2. Node.js (Required for Firebase CLI)
3. Firebase CLI (firebase-tools >=13.0.0)
   • You must be logged in: firebase login

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Quick Start

Using FIA is completely frictionless. It works as a drop-in replacement for flutter run.

1. Navigate to the root of your existing Flutter project.
2. Ensure you have initialized Firebase (firebase init firestore / .firebaserc exists).
3. Start your app using fia run instead of flutter run:

   fia run
   

4. Use your app normally. Whenever a missing index error occurs, FIA intercepts it.
5. FIA will automatically create firestore.indexes.json and deploy the index in the background using the Firebase CLI. Your terminal will display a live, pinned HUD with the deployment status!

(Note: You can pass any standard flutter arguments through FIA: fia run -d chrome)

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Commands Reference

Command	Description
fia run [args]	Starts your app, intercepts flutter run logs, and auto-deploys missing indexes.
fia status	Polls the Firestore REST API to show you the real-time build progress of pending indexes.
fia deploy	Manually triggers a deployment of the current firestore.indexes.json file.
fia export	Pulls your existing indexes from the Firebase Console and saves them to your local JSON file.

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How It Works

1. Detection: FIA pipes the standard output of flutter run. It uses an intelligent rolling buffer and regex engine to detect FAILED_PRECONDITION index URLs, even if the terminal window wraps the text across multiple lines.
2. Parsing: The tool extracts the create_composite Base64 payload from the URL and reverse-engineers the Protobuf structure (supporting both legacy API formats and the modern v1/r naming schemas) to extract the exact collectionGroup, queryScope, and ordered fields.
3. Storage: The parsed index is safely merged into your local firestore.indexes.json file, ensuring no duplicates are created.
4. Deployment: FIA uses a smart "debounce" mechanism. It waits 10 seconds for any subsequent index errors (preventing spam deployments), and then automatically fires a headless firebase deploy --only firestore:indexes command in the background.

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Configuration

You can customize FIA's behavior by creating a .fia.yaml file in the root of your project.

# .fia.yaml
auto_deploy: true       # Set to false if you just want to update the JSON without deploying.
debounce_seconds: 10    # How long to wait for more errors before deploying a batch.
interactive: true       # Enables terminal keyboard shortcuts (D to deploy now, S to skip, etc.)

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Platform Support

FIA is heavily tested and relies entirely on standard Dart asynchronous streams and cross-platform Process APIs.

• Windows ✅ (CMD, PowerShell, Git Bash)
• macOS ✅ (Terminal, iTerm2)
• Linux ✅

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Contributing

Contributions are very welcome! If you find a bug (like a new Firebase log format that isn't being detected), please open an issue or submit a pull request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

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License

This project is licensed under the MIT License - see the LICENSE file for details.