"""Device-facing /frame/* routes. These paths are FROZEN -- they're baked into deployed firmware -- so multi-frame support changes only how the calling frame is resolved (see auth.require_device), never the paths or response key names the deployed flat parser depends on ("refresh_interval_s", "firmware_version"). manage=1 is the one addition: appended by firmware's manage button to whichever of these three GET/POST requests it was already about to make (see firmware/main/frame_client.c's fetch_and_display -- it no longer does its own overlay fetching/compositing, that's all server-side now, see manage_overlay.py and common.build_manage_content).""" from __future__ import annotations import logging import time import httpx from fastapi import APIRouter, Depends, HTTPException, Request from fastapi.responses import FileResponse, RedirectResponse, Response from pydantic import BaseModel from sqlalchemy import delete, func, select from sqlalchemy.orm import Session from .. import calendar_render, mail, photo_queue, quiet_hours from ..auth import get_server_settings, require_device from ..db import frame_locked, get_db from ..firmware import firmware_path from ..image_pipeline import render_placeholder from ..models import BatteryLog, Frame from .common import ( BATTERY_HISTORY_MAX, BATTERY_LOG_MAX, RECHARGE_JUMP_PCT, RECHARGE_LOOKBACK, build_manage_content, get_or_refresh_calendar_events, immich_client_for, immich_creds, list_assets, render_asset, require_configured, ) logger = logging.getLogger(__name__) router = APIRouter() def _setup_placeholder(frame: Frame, request: Request, manage: dict | None = None) -> bytes: """What an unclaimed or not-yet-configured frame displays instead of a photo -- instructions with a QR, rendered at 200 so the device treats it as a perfectly normal image and never error-loops. The URLs are built from the request's own base URL: whatever address the device reached us at is by definition an address that works on this network.""" base = str(request.base_url).rstrip("/") if frame.owner_user_id is None and frame.device_id: claim_url = f"{base}/claim?device_id={frame.device_id}" return render_placeholder( ["This frame isn't claimed yet", "Scan to link it to your account:"], qr_url=claim_url, orientation=frame.orientation, palette_rgb=frame.palette_rgb, manage=manage, ) if frame.owner_user_id is None: return render_placeholder( ["Almost there!", f"Open {base} to finish setting up this frame."], orientation=frame.orientation, palette_rgb=frame.palette_rgb, manage=manage, ) return render_placeholder( ["Almost there!", "Pick an album for this frame:", base], qr_url=base, orientation=frame.orientation, palette_rgb=frame.palette_rgb, manage=manage, ) def _frame_configured(frame: Frame) -> bool: url, key = immich_creds(frame) return bool(url and key and frame.album_id) # --- photos mode --- def _render_photos_mode(db: Session, frame: Frame, request: Request, manage: dict | None, is_normal_wake: bool) -> bytes: if not _frame_configured(frame): return _setup_placeholder(frame, request, manage=manage) client = immich_client_for(frame) assets = list_assets(client, frame) with frame_locked(db, frame.id) as locked: photo_queue.get_current(locked, assets, in_quiet_hours=quiet_hours.in_quiet_hours(locked)) asset_id = locked.current_asset_id return render_asset(client, frame, asset_id, manage=manage) def _advance_photos_mode(db: Session, frame: Frame, manage: dict | None) -> bytes: require_configured(frame) client = immich_client_for(frame) assets = list_assets(client, frame) with frame_locked(db, frame.id) as locked: photo_queue.advance_forced(locked, assets) asset_id = locked.current_asset_id return render_asset(client, frame, asset_id, manage=manage) def _back_photos_mode(db: Session, frame: Frame, manage: dict | None) -> bytes: require_configured(frame) client = immich_client_for(frame) assets = list_assets(client, frame) with frame_locked(db, frame.id) as locked: photo_queue.back_forced(locked, assets) asset_id = locked.current_asset_id return render_asset(client, frame, asset_id, manage=manage) # --- calendar mode --- def _render_calendar_mode(db: Session, frame: Frame, request: Request, manage: dict | None, is_normal_wake: bool) -> bytes: from .common import calendar_sources_for_frame if not calendar_sources_for_frame(db, frame): return render_placeholder( ["This frame's calendar isn't set up yet", "Add a calendar in Settings, then include it on", "this frame's Configuration -> Calendar card."], orientation=frame.orientation, palette_rgb=frame.palette_rgb, manage=manage, ) with frame_locked(db, frame.id) as locked: if is_normal_wake and locked.calendar_browse_offset != 0: locked.calendar_browse_offset = 0 browse_offset = locked.calendar_browse_offset view = locked.calendar_view if locked.calendar_view in calendar_render.CALENDAR_VIEWS else "agenda" inlay_wanted = locked.calendar_photo_inlay and view == "agenda" events, summary = get_or_refresh_calendar_events(db, frame) photo_inlay = None if inlay_wanted and _frame_configured(frame): try: client = immich_client_for(frame) assets = list_assets(client, frame) with frame_locked(db, frame.id) as locked: photo_queue.get_current(locked, assets, in_quiet_hours=quiet_hours.in_quiet_hours(locked)) asset_id = locked.current_asset_id if asset_id: jpeg_bytes = client.download_asset_preview(asset_id) import io from PIL import Image photo_inlay = Image.open(io.BytesIO(jpeg_bytes)) except HTTPException: pass # inlay is nice-to-have -- an Immich hiccup shouldn't blank the whole agenda return calendar_render.render_calendar( events, view=view, browse_offset=browse_offset, orientation=frame.orientation, palette_rgb=frame.palette_rgb, timezone=frame.timezone, photo_inlay=photo_inlay, fetch_summary=summary, manage=manage, ) def _advance_calendar_mode(db: Session, frame: Frame, manage: dict | None) -> bytes: """NEXT in calendar mode: moves the displayed period forward one step (day for agenda, week for week view, month for month view) from wherever it currently is -- not from "today" -- so repeated presses walk further forward. See Frame.calendar_browse_offset.""" with frame_locked(db, frame.id) as locked: locked.calendar_browse_offset += 1 return _render_calendar_mode(db, frame, request=None, manage=manage, is_normal_wake=False) def _back_calendar_mode(db: Session, frame: Frame, manage: dict | None) -> bytes: with frame_locked(db, frame.id) as locked: locked.calendar_browse_offset -= 1 return _render_calendar_mode(db, frame, request=None, manage=manage, is_normal_wake=False) RENDERERS = { "photos": _render_photos_mode, "calendar": _render_calendar_mode, } ADVANCE_RENDERERS = { "photos": _advance_photos_mode, "calendar": _advance_calendar_mode, } BACK_RENDERERS = { "photos": _back_photos_mode, "calendar": _back_calendar_mode, } @router.get("/frame/config") def frame_config(request: Request, frame: Frame = Depends(require_device), db: Session = Depends(get_db)): """Device-facing settings, polled by the frame alongside its reachability check. Always returns 200 with current settings -- no Immich-configured gate, since this doubles as the "is the server up" signal. Also captures the device's running firmware version and board variant (X-Frame-Version/X-Frame-Board headers) and advertises the available OTA image's version, so the device's update check costs zero extra round trips.""" reported_version = request.headers.get("X-Frame-Version", "") reported_board = request.headers.get("X-Frame-Board", "") with frame_locked(db, frame.id) as locked: if locked.stats_first_seen == 0: locked.stats_first_seen = time.time() locked.stats_device_wakes += 1 if reported_version: if locked.device_firmware_version and reported_version != locked.device_firmware_version: locked.stats_ota_updates_applied += 1 locked.device_firmware_version = reported_version if reported_board: locked.device_board_variant = reported_board response = { "refresh_interval_s": quiet_hours.effective_refresh_interval_s(locked), "firmware_version": locked.firmware_available_version or None, } # Per-frame token push: only once the device has introduced itself # by id (so the response to pure-legacy firmware stays byte- # compatible with its 256-byte parse buffer), and only until the # device has authenticated with the token once (device_token_ack). if locked.device_id is not None and not locked.device_token_ack: response["device_token"] = locked.device_token return response def _manage_flag(request: Request) -> bool: return request.query_params.get("manage") == "1" @router.get("/frame/image") def frame_image( request: Request, frame: Frame = Depends(require_device), db: Session = Depends(get_db) ): """Returns the frame's current image. For photos mode: idempotent -- only actually advances to the next photo once refresh_interval_s has elapsed since the current one was set (see app/photo_queue.py) -- safe to call as often as the device wants, including after an unplanned reboot, without skipping ahead in the album. An unclaimed/ unconfigured frame gets a rendered instruction placeholder (200, not an error) so a fresh device never error-loops. ?manage=1 (the manage button) composites the manage overlay onto whatever this would have returned anyway -- see build_manage_content. For calendar mode, this is also the "normal wake" that resets calendar_browse_offset back to 0 (see _render_calendar_mode).""" renderer = RENDERERS.get(frame.mode, _render_photos_mode) manage = build_manage_content(db, frame, request) if _manage_flag(request) else None content = renderer(db, frame, request, manage, True) return Response(content=content, media_type="application/octet-stream") @router.post("/frame/advance") def frame_advance(request: Request, frame: Frame = Depends(require_device), db: Session = Depends(get_db)): """Forces an immediate move forward -- the next photo in photos mode, or the next day/week/month in calendar mode -- ignoring refresh_interval_s. Used by the device's next-photo button.""" handler = ADVANCE_RENDERERS.get(frame.mode, _advance_photos_mode) manage = build_manage_content(db, frame, request) if _manage_flag(request) else None return Response(content=handler(db, frame, manage), media_type="application/octet-stream") @router.post("/frame/back") def frame_back(request: Request, frame: Frame = Depends(require_device), db: Session = Depends(get_db)): """The mirror of /frame/advance -- back a photo in photos mode, back a period in calendar mode. A no-op (still 200, unchanged) if there's nothing to go back to. Used by the device's back-photo button.""" handler = BACK_RENDERERS.get(frame.mode, _back_photos_mode) manage = build_manage_content(db, frame, request) if _manage_flag(request) else None return Response(content=handler(db, frame, manage), media_type="application/octet-stream") class BatteryReport(BaseModel): percent: int @router.post("/frame/battery") def frame_battery( body: BatteryReport, frame: Frame = Depends(require_device), db: Session = Depends(get_db) ): """Battery level reported by the device (only when running on battery -- it stays silent on mains, where the charging voltage would read misleadingly full). Stored with a timestamp plus a per-discharge- cycle history that feeds the Device panel's "on battery for" and "estimated remaining" numbers; every report also lands in the permanent battery_log table behind the history chart.""" if not 0 <= body.percent <= 100: raise HTTPException(400, "percent must be 0-100") now = time.time() should_alert = False alert_email = "" alert_frame_name = "" with frame_locked(db, frame.id) as locked: locked.stats_battery_reports += 1 # See RECHARGE_LOOKBACK: compared against the max of the last few # reports, not just the single previous one, so a lone noisy dip # can't make the next normal reading look like a recharge. recent = locked.battery_history[-RECHARGE_LOOKBACK:] recent_max = max((pct for _, pct in recent), default=None) if recent_max is not None and body.percent >= recent_max + RECHARGE_JUMP_PCT: # Percent jumped up meaningfully -- the battery was recharged # (or swapped). Start a fresh discharge cycle so runtime and # discharge-rate estimates never span a charge -- and let a # low-battery alert fire again next time it actually gets low. locked.battery_history = [] locked.stats_recharge_cycles += 1 locked.battery_alert_sent = False locked.battery_history.append([now, body.percent]) locked.battery_history = locked.battery_history[-BATTERY_HISTORY_MAX:] locked.battery_percent = body.percent locked.battery_as_of = now db.add(BatteryLog(frame_id=locked.id, ts=now, percent=body.percent)) # Safety bound, not a real limit at realistic report rates -- # mirrors the old JSON list's cap. count = db.scalar(select(func.count()).select_from(BatteryLog).where(BatteryLog.frame_id == locked.id)) if count is not None and count >= BATTERY_LOG_MAX: cutoff_ids = select(BatteryLog.id).where(BatteryLog.frame_id == locked.id).order_by( BatteryLog.ts ).limit(count + 1 - BATTERY_LOG_MAX) db.execute(delete(BatteryLog).where(BatteryLog.id.in_(cutoff_ids))) # Once per discharge cycle (see the recharge reset above), not # once per report -- a frame idling at 4% would otherwise get an # email every wake. if ( locked.battery_alert_threshold_pct >= 0 and body.percent <= locked.battery_alert_threshold_pct and not locked.battery_alert_sent and locked.owner is not None and locked.owner.email ): should_alert = True alert_email = locked.owner.email alert_frame_name = locked.name or f"Frame {locked.id}" if should_alert: # Network I/O outside the lock, same convention as everywhere # else in this file -- then a short re-lock to record that it # went out, only on actual success (an SMTP hiccup should let # the next report's still-below-threshold reading try again # rather than silently giving up for the rest of the cycle). settings = get_server_settings(db) sent = mail.send_email( settings, alert_email, f"{alert_frame_name}: battery low", f"{alert_frame_name}'s battery is at {body.percent}%.", ) if sent: with frame_locked(db, frame.id) as locked: locked.battery_alert_sent = True return {"status": "saved"} @router.get("/frame/firmware") def frame_firmware(frame: Frame = Depends(require_device)): """The frame's staged OTA image, streamed to the device (esp_https_ota). 404 until something has been uploaded/fetched.""" path = firmware_path(frame.id) if not path.exists(): raise HTTPException(404, "No firmware uploaded") return FileResponse(path, media_type="application/octet-stream") @router.get("/frame/share/{asset_id}") def frame_share(asset_id: str, frame: Frame = Depends(require_device)): """Creates a 30-minute public Immich share link for asset_id and redirects to it -- what the manage overlay's bottom-left QR code points to. The link is created lazily, when this actually gets hit (i.e. when someone scans it), not when the manage button was pressed, so the 30-minute window starts when it's actually used. Also scoped to the photo currently showing or queued on THIS frame -- not any arbitrary Immich asset id -- as a second layer even a leaked token wouldn't bypass.""" require_configured(frame) if asset_id != frame.current_asset_id and asset_id not in frame.queue: raise HTTPException(404, "That photo isn't currently showing or queued on this frame") client = immich_client_for(frame) try: share_url = client.create_share_link(asset_id, expires_in_s=1800) except httpx.HTTPError as e: raise HTTPException(502, f"Could not create share link: {e}") from e return RedirectResponse(share_url)