Remove the Departures screen
Not needed any more -- the Journey screen already covers the same regional-transit need via EFA backends, and Departures depended on the free db-vendo-client API that DB has been actively blocking third parties from anyway. Removed screens/departures.py, its settings template, its route, its registration in screens/__init__.py, and its nav link. Reworded the docstring/hint references in journey.py and settings_journey.html that pointed at the now-gone screen. Existing config.json entries referencing "departures" (rotation list, pinned screen) are harmless leftovers -- both scheduler lookups already filter to screens that still exist, so nothing needs a migration step. Verified: app boots clean, /settings/departures 404s, every other settings page still loads fine, no leftover references outside of journey.py's own unrelated "departure time" wording.
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@@ -1,8 +1,8 @@
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# Paperwall
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A standalone dashboard for one Waveshare `epd4in0e` (4", 6-color) e-ink panel:
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Navidrome now-playing, clock, weather, departure boards, a fixed-route
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journey planner, and pictures (upload or URL), switchable/controllable from
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Navidrome now-playing, clock, weather, a fixed-route journey planner, and
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pictures (upload or URL), switchable/controllable from
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a local web UI. Started as an InkyPi replacement, but doesn't depend on
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InkyPi at all -- own venv, own vendored copy of the Waveshare driver files.
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@@ -1,5 +1,4 @@
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from screens.clock import ClockScreen
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from screens.departures import DeparturesScreen
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from screens.journey import JourneyScreen
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from screens.navidrome import NavidromeScreen
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from screens.picture import PictureScreen
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@@ -8,7 +7,6 @@ from screens.weather import WeatherScreen
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SCREEN_CLASSES = {
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ClockScreen.id: ClockScreen,
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WeatherScreen.id: WeatherScreen,
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DeparturesScreen.id: DeparturesScreen,
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JourneyScreen.id: JourneyScreen,
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PictureScreen.id: PictureScreen,
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NavidromeScreen.id: NavidromeScreen,
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@@ -1,207 +0,0 @@
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"""Departure board via the free, unofficial db-vendo-client REST API
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(v6.db.transport.rest) -- no API key needed, wraps Deutsche Bahn's HAFAS
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backend the same way a lot of hobby projects/Home Assistant integrations do.
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Not train-only -- HAFAS covers regional/long-distance trains, S-Bahn,
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U-Bahn/subway, trams, and buses in one system, so a bus stop works exactly
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the same way as a train station here: search for it by name like any other
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stop, nothing in check()/render() cares which mode a given departure is.
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It's community-run on donated infrastructure, not an official DB service --
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expect occasional downtime. check() degrades to None on any failure (via
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the same try/except pattern as the Navidrome screen), which renders a
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clean "not available" state rather than crashing the scheduler tick.
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"""
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import logging
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from datetime import datetime
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import requests
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from PIL import Image, ImageDraw
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from screens.base import Screen
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from screens.render_utils import load_font, text_width, truncate_to_width
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logger = logging.getLogger(__name__)
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HTTP_TIMEOUT = 10
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API_BASE = "https://v6.db.transport.rest"
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RESULTS_CHOICES = (3, 5, 8)
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BLACK = (0, 0, 0)
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RED = (200, 0, 0)
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FAINT_LINE = (228, 228, 228)
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class DeparturesScreen(Screen):
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id = "departures"
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display_name = "Departures"
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poll_interval = 120 # fallback if update_minutes isn't in settings yet
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def default_settings(self) -> dict:
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return {
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"station": "",
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"station_id": None,
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"station_label": "",
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"results": 5,
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"update_minutes": 2,
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}
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def get_poll_interval(self, settings: dict) -> int:
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raw = settings.get("update_minutes")
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try:
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minutes = int(raw) if raw is not None else 2
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except (TypeError, ValueError):
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minutes = 2
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return max(1, minutes) * 60
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def find_station(self, query: str):
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"""Resolve a station name to {id, name} via /locations. Prefers an
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actual station/stop over addresses/POIs. Returns None if nothing
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matched (or the request itself fails -- let that raise, same as
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WeatherScreen.geocode(), so the settings route can show an error)."""
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response = requests.get(
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f"{API_BASE}/locations",
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params={"query": query, "results": 5, "poi": "false", "addresses": "false"},
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timeout=HTTP_TIMEOUT,
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)
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response.raise_for_status()
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for entry in response.json() or []:
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if entry.get("type") in ("station", "stop") and entry.get("id"):
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return {"id": entry["id"], "name": entry.get("name") or query}
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return None
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def check(self, settings: dict):
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station_id = settings.get("station_id")
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if not station_id:
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return None
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results = settings.get("results", 5)
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if results not in RESULTS_CHOICES:
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results = 5
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try:
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response = requests.get(
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f"{API_BASE}/stops/{station_id}/departures",
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params={"duration": 90, "results": results},
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timeout=HTTP_TIMEOUT,
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)
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response.raise_for_status()
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payload = response.json()
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except (requests.exceptions.RequestException, ValueError) as exc:
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logger.warning("Departures request failed (service may be down): %s", exc)
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return None
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# Documented example response is a bare array; be defensive in case
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# a future version wraps it in {"departures": [...]} instead.
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raw = payload.get("departures", payload) if isinstance(payload, dict) else payload
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if not raw:
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return None
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departures = []
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for entry in raw[:results]:
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line = (entry.get("line") or {}).get("name") or "?"
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planned = entry.get("plannedWhen") or entry.get("when")
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delay_sec = entry.get("delay")
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delay_min = int(delay_sec // 60) if isinstance(delay_sec, (int, float)) and delay_sec > 0 else 0
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departures.append({
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"line": line,
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"direction": entry.get("direction") or "",
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"time": _format_clock(planned),
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"delay_min": delay_min,
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"cancelled": bool(entry.get("cancelled")),
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"platform": entry.get("platform") or entry.get("plannedPlatform") or "",
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})
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return departures or None
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def render(self, state, settings: dict, resolution: tuple[int, int]) -> Image.Image:
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width, height = resolution
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image = Image.new("RGB", (width, height), "white")
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draw = ImageDraw.Draw(image)
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scale = min(width, height)
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if not settings.get("station_id"):
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self._render_message(draw, width, height, scale, "Keine Station konfiguriert")
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return image
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if not state:
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self._render_message(draw, width, height, scale, "Keine Abfahrten verfügbar")
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return image
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pad = width * 0.04
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header_font = load_font(size=int(scale * 0.055), bold=True)
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station_label = settings.get("station_label") or settings.get("station") or ""
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draw.text((pad, height * 0.045), station_label, font=header_font, fill=BLACK)
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header_bottom = height * 0.045 + header_font.size * 1.35
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draw.rectangle((pad, header_bottom, width - pad, header_bottom + 2), fill=BLACK)
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row_top = header_bottom + height * 0.03
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row_h = (height - row_top - height * 0.03) / len(state)
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line_font = load_font(size=int(scale * 0.05), bold=True)
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dir_font = load_font(size=int(scale * 0.042))
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time_font = load_font(size=int(scale * 0.05), bold=True)
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platform_font = load_font(size=int(scale * 0.032))
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# Sized against actually-measured worst cases at this font size:
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# "ICE 1234" ~98px, "21:09 +12" ~115px, "Fällt aus" ~96px. Every
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# field is still truncated to its column as a safety net for
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# anything longer, but these widths mean that won't normally fire.
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line_w = scale * 0.275
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time_w = scale * 0.325
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platform_w = scale * 0.1
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dir_x = pad + line_w + scale * 0.015
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dir_w = max(20, (width - pad * 2) - line_w - time_w - platform_w - scale * 0.015)
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time_x = dir_x + dir_w
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platform_x = time_x + time_w
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for i, dep in enumerate(state):
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row_top_y = row_top + i * row_h
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row_cy = row_top_y + row_h / 2
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if i > 0:
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draw.line((pad, row_top_y, width - pad, row_top_y), fill=FAINT_LINE, width=1)
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line_text = truncate_to_width(draw, dep["line"], line_font, line_w - 6)
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self._draw_centered_v(draw, line_text, line_font, pad, row_cy, BLACK)
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direction = truncate_to_width(draw, dep["direction"], dir_font, dir_w - 10)
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self._draw_centered_v(draw, direction, dir_font, dir_x, row_cy, BLACK)
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if dep["cancelled"]:
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time_text, time_color = "Fällt aus", RED
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elif dep["delay_min"] > 0:
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time_text, time_color = f"{dep['time']} +{dep['delay_min']}", RED
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else:
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time_text, time_color = dep["time"], BLACK
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time_text = truncate_to_width(draw, time_text, time_font, time_w - 12)
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tw = text_width(draw, time_text, time_font)
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self._draw_centered_v(draw, time_text, time_font, time_x + time_w - tw - 8, row_cy, time_color)
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if dep["platform"]:
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platform_text = truncate_to_width(draw, dep["platform"], platform_font, platform_w - 4)
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pw = text_width(draw, platform_text, platform_font)
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self._draw_centered_v(
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draw, platform_text, platform_font,
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platform_x + (platform_w - pw) / 2, row_cy, BLACK,
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)
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return image
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def _render_message(self, draw, width, height, scale, msg):
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font = load_font(size=int(scale * 0.06))
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mw = text_width(draw, msg, font)
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draw.text(((width - mw) / 2, height / 2), msg, font=font, fill=BLACK)
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def _draw_centered_v(self, draw, text, font, x, cy, fill):
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left, top, right, bottom = draw.textbbox((0, 0), text, font=font)
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draw.text((x, cy - (bottom - top) / 2 - top), text, font=font, fill=fill)
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def _format_clock(iso_str) -> str:
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if not iso_str:
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return "--:--"
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try:
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return datetime.fromisoformat(iso_str).strftime("%H:%M")
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except (TypeError, ValueError):
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return "--:--"
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+2
-3
@@ -3,9 +3,8 @@ regional EFA (Elektronische Fahrplanauskunft) instances -- transit-planner
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backends run by regional transit authorities, not Deutsche Bahn itself.
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This deliberately avoids bahn.de's own internal trip-planner API. DB has
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been actively blocking third-party access to its own backends recently (see
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the Departures screen's docstring and the outage that motivated it) -- EFA
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instances aren't DB's infrastructure, so they aren't part of that
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been actively blocking third-party access to its own backends recently --
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EFA instances aren't DB's infrastructure, so they aren't part of that
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clampdown. Several are tried in sequence (not parallel, to keep this
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synchronous like the rest of the app); first one to return usable journeys
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wins. Ported and simplified from github.com/EiS94/db_info (a Home Assistant
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-34
@@ -128,40 +128,6 @@ def create_app(config, screens: dict, scheduler) -> Flask:
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return render_template("settings_weather.html", settings=config.get_screen_settings("weather"), error=error)
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@app.route("/settings/departures", methods=["GET", "POST"])
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def settings_departures():
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error = None
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if request.method == "POST":
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station_query = request.form.get("station", "").strip()
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results = int(request.form.get("results", 5) or 5)
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if results not in (3, 5, 8):
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results = 5
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update_minutes = max(1, int(request.form.get("update_minutes", 2) or 2))
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if station_query:
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try:
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found = screens["departures"].find_station(station_query)
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except requests.exceptions.RequestException:
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found = None
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if found is None:
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error = f'Could not find a station matching "{station_query}" -- try a different spelling, or the service might be temporarily down.'
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else:
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config.update_screen_settings("departures", {
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"station": station_query,
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"station_id": found["id"],
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"station_label": found["name"],
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"results": results,
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"update_minutes": update_minutes,
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})
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scheduler.invalidate_screen("departures")
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return redirect(url_for("settings_departures", found=found["name"]))
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else:
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config.update_screen_settings("departures", {"results": results, "update_minutes": update_minutes})
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scheduler.invalidate_screen("departures")
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return redirect(url_for("settings_departures", saved=1))
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return render_template("settings_departures.html", settings=config.get_screen_settings("departures"), error=error)
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@app.route("/settings/journey", methods=["GET", "POST"])
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def settings_journey():
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error = None
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@@ -189,7 +189,6 @@
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<a href="{{ url_for('index') }}" class="{{ 'active' if request.endpoint == 'index' }}">Status</a>
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<a href="{{ url_for('settings_navidrome') }}" class="{{ 'active' if request.endpoint == 'settings_navidrome' }}">Navidrome</a>
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<a href="{{ url_for('settings_weather') }}" class="{{ 'active' if request.endpoint == 'settings_weather' }}">Weather</a>
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<a href="{{ url_for('settings_departures') }}" class="{{ 'active' if request.endpoint == 'settings_departures' }}">Departures</a>
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<a href="{{ url_for('settings_journey') }}" class="{{ 'active' if request.endpoint == 'settings_journey' }}">Journey</a>
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<a href="{{ url_for('settings_picture') }}" class="{{ 'active' if request.endpoint == 'settings_picture' }}">Picture</a>
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<a href="{{ url_for('settings_rotation') }}" class="{{ 'active' if request.endpoint == 'settings_rotation' }}">Rotation</a>
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@@ -1,51 +0,0 @@
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{% extends "base.html" %}
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{% block content %}
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<h1>Departures</h1>
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{% if error %}
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<div class="toast error">{{ error }}</div>
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{% endif %}
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{% if request.args.get('found') %}
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<div class="toast">Found: {{ request.args.get('found') }}</div>
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{% endif %}
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<p class="hint" style="margin: -0.5rem 0 1.25rem;">
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Uses the free, unofficial db-vendo-client API (v6.db.transport.rest) --
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no key needed, but it's a community-run service, not official Deutsche
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Bahn infrastructure. Expect occasional downtime; the screen shows a plain
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"not available" message rather than breaking when that happens.
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</p>
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<form method="post">
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<div class="card">
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<div class="section-label">Station</div>
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<div class="field">
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<label for="station">Station or stop name</label>
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<input type="text" id="station" name="station" placeholder="e.g. Berlin Hauptbahnhof">
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<p class="hint">Works for bus/tram/subway stops too, not just train stations -- search by name the same way either way.</p>
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{% if settings.station_label %}
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<p class="hint">Currently: {{ settings.station_label }}</p>
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{% endif %}
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</div>
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</div>
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<div class="card">
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<div class="section-label">Display</div>
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<div class="field">
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<label for="results">Departures to show</label>
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<select id="results" name="results">
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<option value="3" {{ "selected" if settings.results == 3 }}>3</option>
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<option value="5" {{ "selected" if settings.results == 5 or not settings.results }}>5</option>
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<option value="8" {{ "selected" if settings.results == 8 }}>8</option>
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</select>
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</div>
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<div class="field">
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<label for="update_minutes">Update every (minutes)</label>
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<input type="number" id="update_minutes" name="update_minutes" min="1" value="{{ settings.update_minutes or 2 }}">
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<p class="hint">Departure boards change often, so this defaults much shorter than Weather's -- but same rule applies: the panel only actually redraws when something in the list changed.</p>
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</div>
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</div>
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<button type="submit">Save</button>
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</form>
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{% endblock %}
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@@ -13,8 +13,8 @@
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Next connections for a fixed route -- your daily commute, say. Uses
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regional EFA transit-planner backends (not Deutsche Bahn's own
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infrastructure, which has been actively blocking third-party access
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lately) -- several are tried in order, so this can work even when the
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Departures screen's DB-based source can't.
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lately) -- several are tried in order, so this stays reliable even when
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one regional backend is down.
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</p>
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<form method="post">
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Reference in new issue
Block a user