Flutter Codelabs

This repository contains the source code for various Flutter Codelabs. Each codelab is organized into its own directory. You can find the corresponding interactive guides on the Google Codelabs website.

Available codelabs include:

• Firebase & Authentication:
  • firebase-auth-flutterfire-ui: Add a user authentication flow using FirebaseUI.
  • firebase-get-to-know-flutter: Get to know Firebase for Flutter.
• Google Services & Integration:
  • google-maps-in-flutter: Adding Google Maps to a Flutter app.
  • webview_flutter: Adding WebView to your Flutter app.
  • in_app_purchases: Adding in-app purchases.
• Machine Learning & AI:
  • tfagents-flutter: Building a board game with TensorFlow Agents.
  • tfrs-flutter: Building a full-stack movie recommendation system.
  • haiku_generator: Creating haikus with the PaLM API.
  • tfserving-flutter: Text classification in Flutter apps.
• UI, Animation & Layout:
  • animations: Advanced animations in Flutter.
  • animated-responsive-layout: Animated responsive app layout with Material 3.
  • brick_breaker: Introduction to Flame (game engine) with Flutter.
• Language & Fundamentals:
  • namer: Your first Flutter app.
  • dart-patterns-and-records: Dive into Dart's patterns and records.
  • homescreen_codelab: Adding a Home Screen widget.
  • generate_crossword: Build a word puzzle.

To run these projects, ensure you have Flutter installed by following the instructions at docs.flutter.dev/get-started.

The Colorist system prompt defines the persona and operational constraints for an AI color expert assistant integrated into the Colorist desktop application. The assistant's primary goal is to interpret natural language color descriptions and translate them into specific RGB values.

Core Responsibilities

1. Analyze natural language descriptions to understand the intended color.
2. Determine appropriate RGB values where each component (red, green, blue) is a float between 0.0 and 1.0.
3. Respond with a conversational explanation and the explicit RGB values.

Response Format

To ensure the output is easily parsable by the application, the assistant must always include the RGB values using the following exact format: RGB: (red=X.X, green=X.X, blue=X.X)

Handling Ambiguity

If a user's color description is ambiguous or unclear, the assistant should ask clarifying questions one at a time to refine the interpretation.

RGB: (red=1.0, green=0.5, blue=0.25)

Firebase Security Rules use a flexible syntax to match operations against documents.

Access Control via Authentication

• request.auth.uid: The unique identifier of the currently authenticated user.
• request.resource.data: The data being sent in the write request.

Common Rule Patterns

Restrict read to authenticated users:

allow read: if request.auth.uid != null;

Restrict write to the document owner: (Assumes the document contains a userId field matching the user's UID)

allow write: if request.auth.uid == request.resource.data.userId;

Enforce schema validation: Ensure required fields exist in the document during a write:

allow write: if request.auth.uid == request.resource.data.userId
    && "name" in request.resource.data
    && "text" in request.resource.data
    && "timestamp" in request.resource.data;