35 lines
1.9 KiB
Markdown
35 lines
1.9 KiB
Markdown
# Implement Missing Roadmap Features (Phase 2)
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I will implement the key missing features from **Phase 2** of the roadmap to improve compatibility with the Supabase client SDK.
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## 1. Realtime Presence (`realtime` crate)
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**Goal**: Enable user state tracking (online/offline, custom status) compatible with `supabase-js`.
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- **Dependencies**: Add `dashmap` for thread-safe concurrent state management.
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- **State Management**: Update `RealtimeState` to store presence data in memory: `Arc<DashMap<Topic, DashMap<ClientID, PresenceData>>>`.
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- **WebSocket Logic**:
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- Handle `presence` events (join, leave, sync).
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- Implement `track` (user joins/updates state) and `untrack` (user leaves).
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- Broadcast `presence_diff` events to all subscribers on a topic when state changes.
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## 2. Storage Image Transformations (`storage` crate)
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**Goal**: Support on-the-fly image resizing and formatting via query parameters.
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- **Dependencies**: Add `image` crate (with `jpeg`, `png`, `webp` support).
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- **Handler Update**: Modify `download_object` to parse query parameters:
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- `w` / `width`: Target width.
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- `h` / `height`: Target height.
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- `q` / `quality`: Compression quality.
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- `f` / `format`: Output format (e.g., `webp`, `png`).
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- **Processing Logic**:
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- If parameters are present, decode the downloaded image bytes.
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- Apply resizing (using `Lanczos3` filter for quality).
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- Encode to the target format/quality.
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- Return the processed image with correct `Content-Type`.
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## Execution Steps
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1. **Update Dependencies**: Add `dashmap` to `realtime/Cargo.toml` and `image` to `storage/Cargo.toml`.
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2. **Refactor Realtime**: Modify `RealtimeState` and `ws.rs` to implement the Presence protocol.
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3. **Refactor Storage**: Modify `handlers.rs` to implement the Image Transformation pipeline.
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4. **Verification**: Verify compilation and basic functionality (via `cargo check` and manual review of the logic).
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