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# Flock Map App
A Flutter app for mapping and tagging ALPR-style cameras (and other surveillance nodes) for OpenStreetMap, with advanced offline support, robust camera profile management, and a pro-grade UX.
---
## Code Organization
This project uses a modular file/folder structure for maintainability:
- **Settings sections** each live in their own file under `lib/screens/settings_screen_sections/`.
- **Offline map area models, tile logic, and network/camera helpers** are grouped under `lib/services/offline_areas/`.
- The main Settings and OfflineAreaService files are now slim front-ends that delegate logic to these modules.
---
## User Experience & Features
### Map View
- **Explore the Map:** View OSM raster tiles, live camera overlays, and a visual scale bar and zoom indicator in the lower left.
- **Tag Cameras:** Add a camera by dropping a pin, setting direction, and choosing a camera profile. Camera tap/double-tap is smart—double-tap always zooms, single-tap opens camera info.
- **Location:** Blue GPS dot shows your current location, always on top of map icons.
### Camera Profiles
- **Flexible, Private Profiles:** Enable/disable, create, edit, or delete camera types in Settings. At least one profile must be enabled at all times.
- If the last enabled profile is disabled, the generic profile will be auto-enabled so the app always works.
### Upload Destinations/Queue
- **Full OSM OAuth2 Integration:** Upload to live OSM, OSM Sandbox for testing, or keep your changes private in simulate mode.
- **Queue Management:** Settings screen shows a queue of pending uploads—clear or retry them as you wish.
### Offline Map Areas
- **Download Any Region, Any Zoom:** Save the current map area at any zoom for true offline viewing.
- **Intelligent Tile Management:** World tiles at zooms 14 are permanently available (via a protected offline area). All downloads include accurate tile and storage estimates, and never request duplicate or unnecessary tiles.
- **Robust Downloading:** All tile/download logic uses serial fetching and exponential backoff for network failures, minimizing risk of OSM rate-limits and always respecting API etiquette.
- **No Duplicates:** Only one world area; can be re-downloaded (refreshed) but never deleted or renamed.
- **Camera Cache:** Download areas keep camera points in sync for full offline visibility—except the global area, which never attempts to fetch all world cameras.
- **Settings Management:** Cancel, refresh, or remove downloads as needed. Progress, tile count, storage consumption, and cached camera count always displayed.
### Polished UX & Settings Architecture
- **Permanent global base map:** Coverage for the entire world at zooms 14, always present.
- **Smooth map gestures:** Double-tap to zoom even on markers; pinch zoom; camera popups distinguished from zoom.
- **Modular Settings:** All major settings/queue/offline/camera management UI sections are cleanly separated for extensibility and rapid development.
- **Order-preserving overlays:** Your location is always drawn on top for easy visibility.
- **No more dead ends:** Disabling all profiles is impossible; canceling downloads is clean and instant.
---
## OAuth & Build Setup
**Before uploading to OSM:**
- Register OAuth2 applications on both [Production OSM](https://www.openstreetmap.org/oauth2/applications) and [Sandbox OSM](https://master.apis.dev.openstreetmap.org/oauth2/applications).
- Copy generated client IDs to `lib/keys.dart` (see template `.example` file).
### Build Environment Notes
- Requires Xcode, Android Studio, and standard Flutter dependencies. See notes at the end of this file for CLI setup details.
---
## Roadmap
- **COMPLETE**:
- Offline map area download/storage/camera overlay; cancel/retry; fast tile/camera/size estimates; exponential backoff and robust retry logic for network outages or rate-limiting.
- Pro-grade map UX (zoom bar, marker tap/double-tap, robust FABs).
- Modularized, maintainable codebase using small service/helper files and section-separated UI components.
- **SOON**:
- "Offline mode" setting: map never hits the network and always provides a fallback tile for every view (no blank maps; graceful offline-first UX).
- Resumable/robust interrupted downloads.
- Further polish for edge cases (queue, error states).
- **LATER**:
- Satellite base layers, north-up/satellite-mode.
- Offline wayfinding or routing.
- Fancier icons and overlays.
---
## Build Environment Quick Setup
# Install from GUI:
Xcode, Android Studio.
Xcode cmdline tools
Android cmdline tools + NDK
# Terminal
brew install openjdk@17
sudo ln -sfn /usr/local/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
brew install ruby
gem install cocoapods
sdkmanager --install "ndk;27.0.12077973"
export PATH="/Users/bob/.gem/ruby/3.4.0/bin:$PATH"
export PATH=$HOME/development/flutter/bin:$PATH
flutter clean
flutter pub get
flutter run