.session_nest_snapshot_20260729.md

.session_nest_snapshot_20260729.md

@@ -1,34 +1,26 @@
 # Nest Snapshot Session — July 29, 2026
 
 ## Goal
-Capture still images from Nest cameras (Google Nest SDM API, `supported_features: 2` — streaming only) for AI (Ollama) analysis.
+Capture still images from Nest cameras (Google Nest SDM API) for AI (Ollama) analysis.
 
-## What Was Built
+## What Was Built (Previous Session)
+Custom integration `nest_snapshot` at `/homeassistant/custom_components/nest_snapshot/`:
+- `manifest.json`, `services.yaml`, `__init__.py`
+- Uses WebRTC (`aiortc`) to grab one video frame → saves as JPEG
+- Test automation `automation.test_nest_snapshot_capture`
 
-### Custom Integration: `nest_snapshot`
-Location: `/homeassistant/custom_components/nest_snapshot/`
+## What Was Fixed (This Session)
+### Bug: `Nest integration data not available for camera.front_door_front_door`
 
-3 files:
-- **manifest.json** — domain `nest_snapshot`, depends on `nest`, no extra requirements
-- **services.yaml** — `capture` service with `entity_id` (camera, required) and `filename` (template string, optional)
-- **__init__.py** — Main logic: resolves Nest config entry → gets `CameraLiveStreamTrait` → creates `RTCPeerConnection` → generates SDP offer → calls `trait.generate_web_rtc_stream(offer_sdp)` → receives one `av.VideoFrame` → saves JPEG via PIL → cleans up
+**Root cause:** The integration was written for an older Nest SDM API. In HA 2026.7:
+1. Nest stores runtime data in `entry.runtime_data` (a `NestData` dataclass), **not** in `hass.data["nest"]`
+2. Camera entity `unique_id` has a `-camera` suffix, but `device_manager.devices` is keyed by the raw Google device name
 
-### Config Change
-- `/homeassistant/configuration.yaml` — line `nest_snapshot:` appended at end
-
-### Test Automation
-- **`automation.test_nest_snapshot_capture`** — manual trigger, calls `nest_snapshot.capture` on `camera.front_door_front_door` → `/media/nest_snapshot_test_{{ now().strftime('%Y%m%d_%H%M%S') }}.jpg`
-
-## Key Technical Details
-- Nest cameras do NOT support `camera.snapshot`, `camera.record`, `camera.play_stream`, `camera.get_stream_source`, or `camera_proxy` — all return errors or placeholders
-- Working approach: one-shot WebRTC stream via `google-nest-sdm` + `aiortc` inside HA's Python env
-- `aiortc` and `PIL` are NOT available in this MCP add-on container — they live in HA's separate Python environment. All WebRTC/SDP handling runs inside HA.
-- HA version: `2026.7.4`
-- Primary test camera: `camera.front_door_front_door`
-- Blink cameras work fine with `blink.trigger_camera` → `camera.snapshot` (separate flow)
+**Changes in `__init__.py`:**
+- Line 69: Replaced `hass.data.get(NEST_DOMAIN, {}).get(config_entry_id)` with `config_entry.runtime_data`
+- Lines 78-81: Added `-camera` suffix stripping before device_manager lookup
 
 ## To Resume Testing
-1. **Restart HA** — required for `nest_snapshot` component to load
-2. Verify service `nest_snapshot.capture` appears in Developer Tools → Services
-3. Trigger automation `automation.test_nest_snapshot_capture` (or call service manually)
-4. Check `/media/` for output file (>10 KB = success, ~1-2 KB = placeholder)
+1. **Restart HA** — required for custom component file changes to take effect
+2. Trigger automation `automation.test_nest_snapshot_capture` or call `nest_snapshot.capture` on `camera.front_door_front_door`
+3. Check `/media/` for output file (>10 KB = success, ~1-2 KB = placeholder)