🎉 First commit !!!

backend/.gitignore

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+!**/__pycache__/

backend/docker-compose.yml

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+version: '3.7'
+
+services:
+
+  database:
+    image: postgres:15.1-alpine
+    restart: always
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    logging:
+      options:
+        max-size: 10m
+        max-file: "3"
+    ports:
+      - '127.0.0.1:5438:5432'
+    volumes:
+      - ./docker/database/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
+      - ./docker/database/data:/var/lib/postgresql/data

backend/docker/database/docker-entrypoint-initdb.d/init-user-db.sh

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+#!/bin/bash
+set -e
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+	CREATE USER idfm_matrix_bot;
+	CREATE DATABASE bot;
+	CREATE DATABASE idfm;
+	GRANT ALL PRIVILEGES ON DATABASE bot TO idfm_matrix_bot;
+	GRANT ALL PRIVILEGES ON DATABASE idfm TO idfm_matrix_bot;
+EOSQL
+

backend/idfm_matrix_backend/db/__init__.py

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+from .db import Database
+from .base_class import Base
+
+db = Database()

backend/idfm_matrix_backend/db/base_class.py

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+from collections.abc import Iterable
+
+from sqlalchemy import select
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import declarative_base
+from typing import Iterable, Self
+
+Base = declarative_base()
+Base.db = None
+
+
+async def base_add(cls, stops: Self | Iterable[Self]) -> bool:
+    try:
+        method = (
+            cls.db.session.add_all
+            if isinstance(stops, Iterable)
+            else cls.db.session.add
+        )
+        method(stops)
+        await cls.db.session.commit()
+    except IntegrityError as err:
+        print(err)
+
+
+Base.add = classmethod(base_add)
+
+
+async def base_get_by_id(cls, id_: int | str) -> None | Base:
+    res = await cls.db.session.execute(select(cls).where(cls.id == id_))
+    element = res.scalar_one_or_none()
+    return element
+
+
+Base.get_by_id = classmethod(base_get_by_id)

backend/idfm_matrix_backend/db/db.py

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+from asyncio import gather as asyncio_gather
+from functools import wraps
+from pathlib import Path
+from time import time
+from typing import Callable, Iterable, Optional
+
+from rich import print
+from sqlalchemy import event, select, tuple_
+from sqlalchemy.engine import Engine
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import (
+    selectinload,
+    sessionmaker,
+    with_polymorphic,
+)
+from sqlalchemy.orm.attributes import set_committed_value
+
+from .base_class import Base
+
+
+# import logging
+
+# logging.basicConfig()
+# logger = logging.getLogger("bot.sqltime")
+# logger.setLevel(logging.DEBUG)
+
+
+# @event.listens_for(Engine, "before_cursor_execute")
+# def before_cursor_execute(conn, cursor, statement, parameters, context, executemany):
+#     conn.info.setdefault("query_start_time", []).append(time())
+#     logger.debug("Start Query: %s", statement)
+
+
+# @event.listens_for(Engine, "after_cursor_execute")
+# def after_cursor_execute(conn, cursor, statement, parameters, context, executemany):
+#     total = time() - conn.info["query_start_time"].pop(-1)
+#     logger.debug("Query Complete!")
+#     logger.debug("Total Time: %f", total)
+
+
+class Database:
+    def __init__(self) -> None:
+        self._engine = None
+        self._session_maker = None
+        self._session = None
+
+    @property
+    def session(self) -> None:
+        if self._session is None:
+            self._session = self._session_maker()
+        return self._session
+
+    def use_session(func: Callable):
+        @wraps(func)
+        async def wrapper(self, *args, **kwargs):
+            if self._check_session() is not None:
+                return await func(self, *args, **kwargs)
+            # TODO: Raise an exception ?
+
+        return wrapper
+
+    async def connect(self, db_path: str, clear_static_data: bool = False) -> None:
+        # TODO: Preserve UserLastStopSearchResults table from drop.
+        self._engine = create_async_engine(db_path)
+        self._session_maker = sessionmaker(
+            self._engine, expire_on_commit=False, class_=AsyncSession
+        )
+        await self.session.execute("CREATE EXTENSION IF NOT EXISTS pg_trgm;")
+
+        async with self._engine.begin() as conn:
+            if clear_static_data:
+                await conn.run_sync(Base.metadata.drop_all)
+            await conn.run_sync(Base.metadata.create_all)
+
+    async def disconnect(self) -> None:
+        if self._session is not None:
+            await self._session.close()
+            self._session = None
+        await self._engine.dispose()

backend/idfm_matrix_backend/idfm_interface/__init__.py

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+from .idfm_interface import IdfmInterface
+from .idfm_types import *

backend/idfm_matrix_backend/idfm_interface/idfm_interface.py

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+from pathlib import Path
+from re import compile as re_compile
+from time import time
+from typing import ByteString, Iterable, List, Optional
+
+from aiofiles import open as async_open
+from aiohttp import ClientSession
+
+from msgspec import ValidationError
+from msgspec.json import Decoder
+from rich import print
+
+from ..db import Database
+from ..models import Line, LinePicto, Stop, StopArea
+from .idfm_types import (
+    IdfmLineState,
+    IdfmResponse,
+    Line as IdfmLine,
+    MonitoredVehicleJourney,
+    LinePicto as IdfmPicto,
+    IdfmState,
+    Stop as IdfmStop,
+    StopArea as IdfmStopArea,
+    StopAreaStopAssociation,
+    StopLineAsso as IdfmStopLineAsso,
+    Stops,
+)
+from .ratp_types import Picto as RatpPicto
+
+
+class IdfmInterface:
+
+    IDFM_ROOT_URL = "https://prim.iledefrance-mobilites.fr/marketplace"
+    IDFM_STOP_MON_URL = f"{IDFM_ROOT_URL}/stop-monitoring"
+
+    IDFM_ROOT_URL = "https://data.iledefrance-mobilites.fr/explore/dataset"
+    IDFM_STOPS_URL = (
+        f"{IDFM_ROOT_URL}/arrets/download/?format=json&timezone=Europe/Berlin"
+    )
+    IDFM_PICTO_URL = f"{IDFM_ROOT_URL}/referentiel-des-lignes/files"
+
+    RATP_ROOT_URL = "https://data.ratp.fr/explore/dataset"
+    RATP_PICTO_URL = f"{RATP_ROOT_URL}/pictogrammes-des-lignes-de-metro-rer-tramway-bus-et-noctilien/files"
+
+    OPERATOR_RE = re_compile(r"[^:]+:Operator::([^:]+):")
+    LINE_RE = re_compile(r"[^:]+:Line::([^:]+):")
+
+    def __init__(self, api_key: str, database: Database) -> None:
+        self._api_key = api_key
+        self._database = database
+
+        self._http_headers = {"Accept": "application/json", "apikey": self._api_key}
+
+        self._json_stops_decoder = Decoder(type=List[IdfmStop])
+        self._json_stop_areas_decoder = Decoder(type=List[IdfmStopArea])
+        self._json_lines_decoder = Decoder(type=List[IdfmLine])
+        self._json_stops_lines_assos_decoder = Decoder(type=List[IdfmStopLineAsso])
+        self._json_ratp_pictos_decoder = Decoder(type=List[RatpPicto])
+        self._json_stop_area_stop_asso_decoder = Decoder(
+            type=List[StopAreaStopAssociation]
+        )
+
+        self._response_json_decoder = Decoder(type=IdfmResponse)
+
+    async def startup(self) -> None:
+        BATCH_SIZE = 10000
+        STEPS = (
+            (
+                StopArea,
+                self._request_idfm_stop_areas,
+                IdfmInterface._format_idfm_stop_areas,
+            ),
+            (Stop, self._request_idfm_stops, IdfmInterface._format_idfm_stops),
+        )
+
+        for model, get_method, format_method in STEPS:
+            step_begin_ts = time()
+            elements = []
+
+            async for element in get_method():
+                elements.append(element)
+
+                if len(elements) == BATCH_SIZE:
+                    await model.add(format_method(*elements))
+                    elements.clear()
+
+            if elements:
+                await model.add(format_method(*elements))
+
+            print(f"Add {model.__name__}s: {time() - step_begin_ts}s")
+
+        begin_ts = time()
+        await self._load_lines()
+        print(f"Add Lines and IDFM LinePictos: {time() - begin_ts}s")
+
+        begin_ts = time()
+        await self._load_ratp_pictos(30)
+        print(f"Add RATP LinePictos: {time() - begin_ts}s")
+
+        begin_ts = time()
+        await self._load_lines_stops_assos()
+        print(f"Link Stops to Lines: {time() - begin_ts}s")
+
+        begin_ts = time()
+        await self._load_stop_areas_stops_assos()
+        print(f"Link Stops to StopAreas: {time() - begin_ts}s")
+
+    async def _load_lines(self, batch_size: int = 5000) -> None:
+        lines, pictos = [], []
+        picto_ids = set()
+        async for line in self._request_idfm_lines():
+            if (picto := line.fields.picto) is not None and picto.id_ not in picto_ids:
+                picto_ids.add(picto.id_)
+                pictos.append(picto)
+
+            lines.append(line)
+            if len(lines) == batch_size:
+                await LinePicto.add(IdfmInterface._format_idfm_pictos(*pictos))
+                await Line.add(await self._format_idfm_lines(*lines))
+                lines.clear()
+                pictos.clear()
+
+        if pictos:
+            await LinePicto.add(IdfmInterface._format_idfm_pictos(*pictos))
+        if lines:
+            await Line.add(await self._format_idfm_lines(*lines))
+
+    async def _load_ratp_pictos(self, batch_size: int = 5) -> None:
+        pictos = []
+
+        async for picto in self._request_ratp_pictos():
+            pictos.append(picto)
+            if len(pictos) == batch_size:
+                formatted_pictos = IdfmInterface._format_ratp_pictos(*pictos)
+                await LinePicto.add(formatted_pictos.values())
+                await Line.add_pictos(formatted_pictos)
+                pictos.clear()
+
+        if pictos:
+            formatted_pictos = IdfmInterface._format_ratp_pictos(*pictos)
+            await LinePicto.add(formatted_pictos.values())
+            await Line.add_pictos(formatted_pictos)
+
+    async def _load_lines_stops_assos(self, batch_size: int = 5000) -> None:
+        total_assos_nb = total_found_nb = 0
+        assos = []
+        async for asso in self._request_idfm_stops_lines_associations():
+            fields = asso.fields
+            try:
+                stop_id = int(fields.stop_id.rsplit(":", 1)[-1])
+            except ValueError as err:
+                print(err)
+                print(f"{fields.stop_id = }")
+                continue
+
+            assos.append((fields.route_long_name, fields.operatorname, stop_id))
+            if len(assos) == batch_size:
+                total_assos_nb += batch_size
+                total_found_nb += await Line.add_stops(assos)
+                assos.clear()
+
+        if assos:
+            total_assos_nb += len(assos)
+            total_found_nb += await Line.add_stops(assos)
+
+        print(f"{total_found_nb} line <-> stop ({total_assos_nb = } found)")
+
+    async def _load_stop_areas_stops_assos(self, batch_size: int = 5000) -> None:
+        total_assos_nb = total_found_nb = 0
+        assos = []
+        async for asso in self._request_idfm_stop_area_stop_associations():
+            fields = asso.fields
+
+            assos.append((int(fields.zdaid), int(fields.arrid)))
+            if len(assos) == batch_size:
+                total_assos_nb += batch_size
+                total_found_nb += await StopArea.add_stops(assos)
+                assos.clear()
+
+        if assos:
+            total_assos_nb += len(assos)
+            total_found_nb += await StopArea.add_stops(assos)
+
+        print(f"{total_found_nb} stop area <-> stop ({total_assos_nb = } found)")
+
+    async def _request_idfm_stops(self):
+        # headers = {"Accept": "application/json", "apikey": self._api_key}
+        # async with ClientSession(headers=headers) as session:
+        #     async with session.get(self.STOPS_URL) as response:
+        #         # print("Status:", response.status)
+        #         if response.status == 200:
+        #             for point in self._json_stops_decoder.decode(await response.read()):
+        #                 yield point
+        # TODO: Use HTTP
+        async with async_open("./tests/datasets/stops_dataset.json", "rb") as raw:
+            for element in self._json_stops_decoder.decode(await raw.read()):
+                yield element
+
+    async def _request_idfm_stop_areas(self):
+        # TODO: Use HTTP
+        async with async_open("./tests/datasets/zones-d-arrets.json", "rb") as raw:
+            for element in self._json_stop_areas_decoder.decode(await raw.read()):
+                yield element
+
+    async def _request_idfm_lines(self):
+        # TODO: Use HTTP
+        async with async_open("./tests/datasets/lines_dataset.json", "rb") as raw:
+            for element in self._json_lines_decoder.decode(await raw.read()):
+                yield element
+
+    async def _request_idfm_stops_lines_associations(self):
+        # TODO: Use HTTP
+        async with async_open("./tests/datasets/arrets-lignes.json", "rb") as raw:
+            for element in self._json_stops_lines_assos_decoder.decode(
+                await raw.read()
+            ):
+                yield element
+
+    async def _request_idfm_stop_area_stop_associations(self):
+        # TODO: Use HTTP
+        async with async_open("./tests/datasets/relations.json", "rb") as raw:
+            for element in self._json_stop_area_stop_asso_decoder.decode(
+                await raw.read()
+            ):
+                yield element
+
+    async def _request_ratp_pictos(self):
+        # TODO: Use HTTP
+        async with async_open(
+            "./tests/datasets/pictogrammes-des-lignes-de-metro-rer-tramway-bus-et-noctilien.json",
+            "rb",
+        ) as fd:
+            for element in self._json_ratp_pictos_decoder.decode(await fd.read()):
+                yield element
+
+    @classmethod
+    def _format_idfm_pictos(cls, *pictos: IdfmPicto) -> Iterable[LinePicto]:
+        ret = []
+
+        for picto in pictos:
+            ret.append(
+                LinePicto(
+                    id=picto.id_,
+                    mime_type=picto.mimetype,
+                    height_px=picto.height,
+                    width_px=picto.width,
+                    filename=picto.filename,
+                    url=f"{cls.IDFM_PICTO_URL}/{picto.id_}/download",
+                    thumbnail=picto.thumbnail,
+                    format=picto.format,
+                )
+            )
+
+        return ret
+
+    @classmethod
+    def _format_ratp_pictos(cls, *pictos: RatpPicto) -> dict[str, None | LinePicto]:
+        ret = {}
+
+        for picto in pictos:
+            if (fields := picto.fields.noms_des_fichiers) is not None:
+                ret[picto.fields.indices_commerciaux] = LinePicto(
+                    id=fields.id_,
+                    mime_type=f"image/{fields.format.lower()}",
+                    height_px=fields.height,
+                    width_px=fields.width,
+                    filename=fields.filename,
+                    url=f"{cls.RATP_PICTO_URL}/{fields.id_}/download",
+                    thumbnail=fields.thumbnail,
+                    format=fields.format,
+                )
+
+        return ret
+
+    async def _format_idfm_lines(self, *lines: IdfmLine) -> Iterable[Line]:
+        ret = []
+
+        optional_value = IdfmLine.optional_value
+
+        for line in lines:
+            fields = line.fields
+
+            picto_id = fields.picto.id_ if fields.picto is not None else None
+            picto = await LinePicto.get_by_id(picto_id) if picto_id else None
+
+            ret.append(
+                Line(
+                    id=fields.id_line,
+                    short_name=fields.shortname_line,
+                    name=fields.name_line,
+                    status=IdfmLineState(fields.status.value),
+                    transport_mode=fields.transportmode.value,
+                    transport_submode=optional_value(fields.transportsubmode),
+                    network_name=optional_value(fields.networkname),
+                    group_of_lines_id=optional_value(fields.id_groupoflines),
+                    group_of_lines_shortname=optional_value(
+                        fields.shortname_groupoflines
+                    ),
+                    colour_web_hexa=fields.colourweb_hexa,
+                    text_colour_hexa=fields.textcolourprint_hexa,
+                    operator_id=optional_value(fields.operatorref),
+                    operator_name=optional_value(fields.operatorname),
+                    accessibility=fields.accessibility.value,
+                    visual_signs_available=fields.visualsigns_available.value,
+                    audible_signs_available=fields.audiblesigns_available.value,
+                    picto_id=fields.picto.id_ if fields.picto is not None else None,
+                    picto=picto,
+                    record_id=line.recordid,
+                    record_ts=int(line.record_timestamp.timestamp()),
+                )
+            )
+
+        return ret
+
+    @staticmethod
+    def _format_idfm_stops(*stops: IdfmStop) -> Iterable[Stop]:
+        for stop in stops:
+            fields = stop.fields
+            try:
+                created_ts = int(fields.arrcreated.timestamp())
+            except AttributeError:
+                created_ts = None
+            yield Stop(
+                id=int(fields.arrid),
+                name=fields.arrname,
+                latitude=fields.arrgeopoint.lat,
+                longitude=fields.arrgeopoint.lon,
+                town_name=fields.arrtown,
+                postal_region=fields.arrpostalregion,
+                xepsg2154=fields.arrxepsg2154,
+                yepsg2154=fields.arryepsg2154,
+                transport_mode=fields.arrtype.value,
+                version=fields.arrversion,
+                created_ts=created_ts,
+                changed_ts=int(fields.arrchanged.timestamp()),
+                accessibility=fields.arraccessibility.value,
+                visual_signs_available=fields.arrvisualsigns.value,
+                audible_signs_available=fields.arraudiblesignals.value,
+                record_id=stop.recordid,
+                record_ts=int(stop.record_timestamp.timestamp()),
+            )
+
+    @staticmethod
+    def _format_idfm_stop_areas(*stop_areas: IdfmStopArea) -> Iterable[StopArea]:
+        for stop_area in stop_areas:
+            fields = stop_area.fields
+            try:
+                created_ts = int(fields.arrcreated.timestamp())
+            except AttributeError:
+                created_ts = None
+            yield StopArea(
+                id=int(fields.zdaid),
+                name=fields.zdaname,
+                town_name=fields.zdatown,
+                postal_region=fields.zdapostalregion,
+                xepsg2154=fields.zdaxepsg2154,
+                yepsg2154=fields.zdayepsg2154,
+                type=fields.zdatype.value,
+                version=fields.zdaversion,
+                created_ts=created_ts,
+                changed_ts=int(fields.zdachanged.timestamp()),
+            )
+
+    async def render_line_picto(self, line: Line) -> tuple[None | str, None | str]:
+        begin_ts = time()
+        line_picto_path = line_picto_format = None
+        target = f"/tmp/{line.id}_repr"
+
+        picto = line.picto
+        if picto is not None:
+            picto_data = await self._get_line_picto(line)
+            async with async_open(target, "wb") as fd:
+                await fd.write(picto_data)
+            line_picto_path = target
+            line_picto_format = picto.mime_type
+
+        print(f"render_line_picto: {time() - begin_ts}")
+        return (line_picto_path, line_picto_format)
+
+    async def _get_line_picto(self, line: Line) -> Optional[ByteString]:
+        print("---------------------------------------------------------------------")
+        begin_ts = time()
+        data = None
+
+        picto = line.picto
+        if picto is not None:
+            headers = (
+                self._http_headers if picto.url.startswith(self.IDFM_ROOT_URL) else None
+            )
+            session_begin_ts = time()
+            async with ClientSession(headers=headers) as session:
+                session_creation_ts = time()
+                print(f"Session creation {session_creation_ts - session_begin_ts}")
+                async with session.get(picto.url) as response:
+                    get_end_ts = time()
+                    print(f"GET {get_end_ts - session_creation_ts}")
+                    data = await response.read()
+                    print(f"read {time() - get_end_ts}")
+
+        print(f"render_line_picto: {time() - begin_ts}")
+        print("---------------------------------------------------------------------")
+        return data
+
+    async def get_next_passages(self, stop_point_id: str) -> Optional[IdfmResponse]:
+        # print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
+        begin_ts = time()
+        ret = None
+        params = {"MonitoringRef": f"STIF:StopPoint:Q:{stop_point_id}:"}
+        session_begin_ts = time()
+        async with ClientSession(headers=self._http_headers) as session:
+            session_creation_ts = time()
+            # print(f"Session creation {session_creation_ts - session_begin_ts}")
+            async with session.get(self.IDFM_STOP_MON_URL, params=params) as response:
+                get_end_ts = time()
+                # print(f"GET {get_end_ts - session_creation_ts}")
+                if response.status == 200:
+                    get_end_ts = time()
+                    # print(f"GET {get_end_ts - session_creation_ts}")
+                    data = await response.read()
+                    # print(data)
+                    try:
+                        ret = self._response_json_decoder.decode(data)
+                    except ValidationError as err:
+                        print(err)
+                    # print(f"read {time() - get_end_ts}")
+
+        # print(f"get_next_passages: {time() - begin_ts}")
+        # print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
+        return ret
+
+    async def get_destinations(self, stop_point_id: str) -> Iterable[str]:
+        # TODO: Store in database the destination for the given stop and line id.
+        begin_ts = time()
+        destinations: dict[str, str] = {}
+        if (res := await self.get_next_passages(stop_point_id)) is not None:
+            for delivery in res.Siri.ServiceDelivery.StopMonitoringDelivery:
+                if delivery.Status == IdfmState.true:
+                    for stop_visit in delivery.MonitoredStopVisit:
+                        journey = stop_visit.MonitoredVehicleJourney
+                        if (destination_name := journey.DestinationName) and (
+                            line_ref := journey.LineRef
+                        ):
+                            line_id = line_ref.value.replace("STIF:Line::", "")[:-1]
+                            print(f"{line_id = }")
+                            destinations[line_id] = destination_name[0].value
+        print(f"get_next_passages: {time() - begin_ts}")
+        return destinations

backend/idfm_matrix_backend/idfm_interface/idfm_types.py

@@ -0,0 +1,277 @@
+from __future__ import annotations
+
+from datetime import datetime
+from enum import Enum, StrEnum
+from typing import Any, Literal, Optional, NamedTuple
+
+from msgspec import Struct
+
+
+class Coordinate(NamedTuple):
+    lat: float
+    lon: float
+
+
+class IdfmState(Enum):
+    unknown = "unknown"
+    false = "false"
+    partial = "partial"
+    true = "true"
+
+
+class TrainStatus(Enum):
+    unknown = ""
+    arrived = "arrived"
+    onTime = "onTime"
+    delayed = "delayed"
+    noReport = "noReport"
+    early = "early"
+    cancelled = "cancelled"
+    undefined = "undefined"
+
+
+class TransportMode(StrEnum):
+    bus = "bus"
+    tram = "tram"
+    metro = "metro"
+    rail = "rail"
+    funicular = "funicular"
+
+
+class TransportSubMode(Enum):
+    unknown = "unknown"
+
+    localBus = "localBus"
+    regionalBus = "regionalBus"
+    highFrequencyBus = "highFrequencyBus"
+    expressBus = "expressBus"
+    nightBus = "nightBus"
+    demandAndResponseBus = "demandAndResponseBus"
+    airportLinkBus = "airportLinkBus"
+
+    regionalRail = "regionalRail"
+    railShuttle = "railShuttle"
+    suburbanRailway = "suburbanRailway"
+
+    local = "local"
+
+
+class StopFields(Struct, kw_only=True):
+    arrgeopoint: Coordinate
+    arrtown: str
+    arrcreated: None | datetime = None
+    arryepsg2154: int
+    arrpostalregion: str
+    arrid: str
+    arrxepsg2154: int
+    arraccessibility: IdfmState
+    arrvisualsigns: IdfmState
+    arrtype: TransportMode
+    arrname: str
+    arrversion: str
+    arrchanged: datetime
+    arraudiblesignals: IdfmState
+
+
+class Point(Struct):
+    coordinates: Coordinate
+
+
+class Stop(Struct):
+    datasetid: str
+    recordid: str
+    fields: StopFields
+    record_timestamp: datetime
+    # geometry: Union[Point]
+
+
+Stops = dict[str, Stop]
+
+
+class StopAreaType(Enum):
+    metroStation = "metroStation"
+    onstreetBus = "onstreetBus"
+    onstreetTram = "onstreetTram"
+    railStation = "railStation"
+
+
+class StopAreaFields(Struct, kw_only=True):
+    zdaname: str
+    zdcid: str
+    zdatown: str
+    zdaversion: str
+    zdaid: str
+    zdacreated: Optional[datetime] = None
+    zdatype: StopAreaType
+    zdayepsg2154: int
+    zdapostalregion: str
+    zdachanged: datetime
+    zdaxepsg2154: int
+
+
+class StopArea(Struct):
+    datasetid: str
+    recordid: str
+    fields: StopAreaFields
+    record_timestamp: datetime
+
+
+class StopAreaStopAssociationFields(Struct, kw_only=True):
+    arrid: str  # TODO: use int ?
+    artid: Optional[str] = None
+    arrversion: str
+    zdcid: str
+    version: int
+    zdaid: str
+    zdaversion: str
+    artversion: Optional[str] = None
+
+
+class StopAreaStopAssociation(Struct):
+    datasetid: str
+    recordid: str
+    fields: StopAreaStopAssociationFields
+    record_timestamp: datetime
+
+
+class IdfmLineState(Enum):
+    active = "active"
+
+
+class LinePicto(Struct, rename={"id_": "id"}):
+    id_: str
+    mimetype: str
+    height: int
+    width: int
+    filename: str
+    thumbnail: bool
+    format: str
+    # color_summary: list[str]
+
+
+class LineFields(Struct, kw_only=True):
+    name_line: str
+    status: IdfmLineState
+    accessibility: IdfmState
+    shortname_groupoflines: Optional[str] = None
+    transportmode: TransportMode
+    colourweb_hexa: str
+    textcolourprint_hexa: str
+    transportsubmode: Optional[TransportSubMode] = TransportSubMode.unknown
+    operatorref: Optional[str] = None
+    visualsigns_available: IdfmState
+    networkname: Optional[str] = None
+    id_line: str
+    id_groupoflines: Optional[str] = None
+    operatorname: Optional[str] = None
+    audiblesigns_available: IdfmState
+    shortname_line: str
+    picto: Optional[LinePicto] = None
+
+
+class Line(Struct):
+    datasetid: str
+    recordid: str
+    fields: LineFields
+    record_timestamp: datetime
+
+    @staticmethod
+    def optional_value(value: Any) -> Any:
+        if value:
+            return value.value if isinstance(value, Enum) else value
+        return "NULL"
+
+
+Lines = dict[str, Line]
+
+
+# TODO: Set structs frozen
+class StopLineAssoFields(Struct):
+    pointgeo: Coordinate
+    stop_id: str
+    stop_name: str
+    operatorname: str
+    nom_commune: str
+    route_long_name: str
+    id: str
+    stop_lat: str
+    stop_lon: str
+    code_insee: str
+
+
+class StopLineAsso(Struct):
+    datasetid: str
+    recordid: str
+    fields: StopLineAssoFields
+    # geometry: Union[Point]
+
+
+class Value(Struct):
+    value: str
+
+
+class FramedVehicleJourney(Struct):
+    DataFrameRef: Value
+    DatedVehicleJourneyRef: str
+
+
+class TrainNumber(Struct):
+    TrainNumberRef: list[Value]
+
+
+class MonitoredCall(Struct, kw_only=True):
+    Order: Optional[int] = None
+    StopPointName: list[Value]
+    VehicleAtStop: bool
+    DestinationDisplay: list[Value]
+    AimedArrivalTime: Optional[datetime] = None
+    ExpectedArrivalTime: Optional[datetime] = None
+    ArrivalPlatformName: Optional[Value] = None
+    AimedDepartureTime: Optional[datetime] = None
+    ExpectedDepartureTime: Optional[datetime] = None
+    ArrivalStatus: TrainStatus = None
+    DepartureStatus: TrainStatus = None
+
+
+class MonitoredVehicleJourney(Struct, kw_only=True):
+    LineRef: Value
+    OperatorRef: Value
+    FramedVehicleJourneyRef: FramedVehicleJourney
+    DestinationRef: Value
+    DestinationName: list[Value] | None = None
+    JourneyNote: list[Value] | None = None
+    TrainNumbers: Optional[TrainNumber] = None
+    MonitoredCall: MonitoredCall
+
+
+class StopDelivery(Struct):
+    RecordedAtTime: datetime
+    ItemIdentifier: str
+    MonitoringRef: Value
+    MonitoredVehicleJourney: MonitoredVehicleJourney
+
+
+class StopMonitoringDelivery(Struct):
+    ResponseTimestamp: datetime
+    Version: str
+    Status: IdfmState
+    MonitoredStopVisit: list[StopDelivery]
+
+
+class ServiceDelivery(Struct):
+    ResponseTimestamp: datetime
+    ProducerRef: str
+    ResponseMessageIdentifier: str
+    StopMonitoringDelivery: list[StopMonitoringDelivery]
+
+
+class Siri(Struct):
+    ServiceDelivery: ServiceDelivery
+
+
+class IdfmOperator(Enum):
+    SNCF = "SNCF"
+
+
+class IdfmResponse(Struct):
+    Siri: Siri

backend/idfm_matrix_backend/idfm_interface/ratp_types.py

@@ -0,0 +1,25 @@
+from datetime import datetime
+from typing import Optional
+
+from msgspec import Struct
+
+
+class PictoFieldsFile(Struct, rename={"id_": "id"}):
+    id_: str
+    height: int
+    width: int
+    filename: str
+    thumbnail: bool
+    format: str
+
+
+class PictoFields(Struct):
+    indices_commerciaux: str
+    noms_des_fichiers: Optional[PictoFieldsFile] = None
+
+
+class Picto(Struct):
+    datasetid: str
+    recordid: str
+    fields: PictoFields
+    record_timestamp: datetime

backend/idfm_matrix_backend/models/__init__.py

@@ -0,0 +1,3 @@
+from .line import Line, LinePicto
+from .stop import Stop, StopArea
+from .user import UserLastStopSearchResults

backend/idfm_matrix_backend/models/line.py

@@ -0,0 +1,176 @@
+from asyncio import gather as asyncio_gather
+from collections import defaultdict
+from typing import Iterable, Self
+
+from sqlalchemy import (
+    BigInteger,
+    Boolean,
+    Column,
+    Enum,
+    ForeignKey,
+    Integer,
+    select,
+    String,
+    Table,
+)
+from sqlalchemy.orm import Mapped, relationship, selectinload
+from sqlalchemy.orm.attributes import set_committed_value
+from sqlalchemy.sql.expression import tuple_
+
+from ..db import Base, db
+from ..idfm_interface.idfm_types import (
+    IdfmState,
+    IdfmLineState,
+    TransportMode,
+    TransportSubMode,
+)
+from .stop import _Stop
+
+line_stop_association_table = Table(
+    "line_stop_association_table",
+    Base.metadata,
+    Column("line_id", ForeignKey("lines.id")),
+    Column("stop_id", ForeignKey("_stops.id")),
+)
+
+
+class LinePicto(Base):
+
+    db = db
+
+    id = Column(String, primary_key=True)
+    mime_type = Column(String, nullable=False)
+    height_px = Column(Integer, nullable=False)
+    width_px = Column(Integer, nullable=False)
+    filename = Column(String, nullable=False)
+    url = Column(String, nullable=False)
+    thumbnail = Column(Boolean, nullable=False)
+    format = Column(String, nullable=False)
+
+    __tablename__ = "line_pictos"
+
+
+class Line(Base):
+
+    db = db
+
+    id = Column(String, primary_key=True)
+
+    short_name = Column(String)
+    name = Column(String, nullable=False)
+    status = Column(Enum(IdfmLineState), nullable=False)
+    transport_mode = Column(Enum(TransportMode), nullable=False)
+    transport_submode = Column(Enum(TransportSubMode), nullable=False)
+
+    network_name = Column(String)
+    group_of_lines_id = Column(String)
+    group_of_lines_shortname = Column(String)
+
+    colour_web_hexa = Column(String, nullable=False)
+    text_colour_hexa = Column(String, nullable=False)
+
+    operator_id = Column(String)
+    operator_name = Column(String)
+
+    accessibility = Column(Enum(IdfmState), nullable=False)
+    visual_signs_available = Column(Enum(IdfmState), nullable=False)
+    audible_signs_available = Column(Enum(IdfmState), nullable=False)
+
+    picto_id = Column(String, ForeignKey("line_pictos.id"))
+    picto: Mapped[LinePicto] = relationship(LinePicto, lazy="selectin")
+
+    record_id = Column(String, nullable=False)
+    record_ts = Column(BigInteger, nullable=False)
+
+    stops: Mapped[list["_Stop"]] = relationship(
+        "_Stop",
+        secondary=line_stop_association_table,
+        back_populates="lines",
+        lazy="selectin",
+    )
+
+    __tablename__ = "lines"
+
+    @classmethod
+    async def get_by_name(
+        cls, name: str, operator_name: None | str = None
+    ) -> list[Self]:
+        filters = {"name": name}
+        if operator_name is not None:
+            filters["operator_name"] = operator_name
+
+        lines = None
+        stmt = (
+            select(Line)
+            .filter_by(**filters)
+            .options(selectinload(Line.stops), selectinload(Line.picto))
+        )
+        res = await cls.db.session.execute(stmt)
+        lines = res.scalars().all()
+        return lines
+
+    @classmethod
+    async def _add_picto_to_line(cls, line: str | Self, picto: LinePicto) -> None:
+        if isinstance(line, str):
+            if (lines := await cls.get_by_name(line)) is not None:
+                if len(lines) == 1:
+                    line = lines[0]
+                else:
+                    for candidate_line in lines:
+                        if candidate_line.operator_name == "RATP":
+                            line = candidate_line
+                            break
+
+        if isinstance(line, Line) and line.picto is None:
+            line.picto = picto
+            line.picto_id = picto.id
+
+    @classmethod
+    async def add_pictos(cls, line_to_pictos: dict[str | Self, LinePicto]) -> None:
+        await asyncio_gather(
+            *[
+                cls._add_picto_to_line(line, picto)
+                for line, picto in line_to_pictos.items()
+            ]
+        )
+
+        await cls.db.session.commit()
+
+    @classmethod
+    async def add_stops(cls, line_to_stop_ids: Iterable[tuple[str, str, str]]) -> int:
+        line_names_ops, stop_ids = set(), set()
+        for line_name, operator_name, stop_id in line_to_stop_ids:
+            line_names_ops.add((line_name, operator_name))
+            stop_ids.add(stop_id)
+
+        res = await cls.db.session.execute(
+            select(Line).where(
+                tuple_(Line.name, Line.operator_name).in_(line_names_ops)
+            )
+        )
+
+        lines = defaultdict(list)
+        for line in res.scalars():
+            lines[(line.name, line.operator_name)].append(line)
+
+        res = await cls.db.session.execute(select(_Stop).where(_Stop.id.in_(stop_ids)))
+        stops = {stop.id: stop for stop in res.scalars()}
+
+        found = 0
+        for line_name, operator_name, stop_id in line_to_stop_ids:
+            if (stop := stops.get(stop_id)) is not None:
+                if (stop_lines := lines.get((line_name, operator_name))) is not None:
+                    if len(stop_lines) > 1:
+                        print(stop_lines)
+                    for stop_line in stop_lines:
+                        stop_line.stops.append(stop)
+                    found += 1
+                else:
+                    print(f"No line found for {line_name}/{operator_name}")
+            else:
+                print(
+                    f"No stop found for {stop_id} id (used by {line_name}/{operator_name})"
+                )
+
+        await cls.db.session.commit()
+        return found

backend/idfm_matrix_backend/models/stop.py

@@ -0,0 +1,144 @@
+from typing import Iterable, Self
+
+from sqlalchemy import (
+    BigInteger,
+    Column,
+    Enum,
+    Float,
+    ForeignKey,
+    select,
+    String,
+    Table,
+)
+from sqlalchemy.orm import Mapped, relationship, selectinload, with_polymorphic
+from sqlalchemy.schema import Index
+
+from ..db import Base, db
+from ..idfm_interface.idfm_types import TransportMode, IdfmState, StopAreaType
+
+stop_area_stop_association_table = Table(
+    "stop_area_stop_association_table",
+    Base.metadata,
+    Column("stop_id", ForeignKey("_stops.id")),
+    Column("stop_area_id", ForeignKey("stop_areas.id")),
+)
+
+
+class _Stop(Base):
+
+    db = db
+
+    id = Column(BigInteger, primary_key=True)
+    kind = Column(String)
+
+    name = Column(String, nullable=False, index=True)
+    town_name = Column(String, nullable=False)
+    postal_region = Column(String, nullable=False)
+    xepsg2154 = Column(BigInteger, nullable=False)
+    yepsg2154 = Column(BigInteger, nullable=False)
+    version = Column(String, nullable=False)
+    created_ts = Column(BigInteger)
+    changed_ts = Column(BigInteger, nullable=False)
+    lines: Mapped[list["Line"]] = relationship(
+        "Line",
+        secondary="line_stop_association_table",
+        back_populates="stops",
+        # lazy="joined",
+        lazy="selectin",
+    )
+    areas: Mapped[list["StopArea"]] = relationship(
+        "StopArea", secondary=stop_area_stop_association_table, back_populates="stops"
+    )
+
+    __tablename__ = "_stops"
+    __mapper_args__ = {"polymorphic_identity": "_stops", "polymorphic_on": kind}
+    __table_args__ = (
+        # To optimize the ilike requests
+        Index(
+            "name_idx_gin",
+            name,
+            postgresql_ops={"name": "gin_trgm_ops"},
+            postgresql_using="gin",
+        ),
+    )
+
+    # TODO: Test https://www.cybertec-postgresql.com/en/postgresql-more-performance-for-like-and-ilike-statements/
+    # TODO: Should be able to remove with_polymorphic ?
+    @classmethod
+    async def get_by_name(cls, name: str) -> list[Self]:
+        stop_stop_area = with_polymorphic(_Stop, [Stop, StopArea])
+        stmt = (
+            select(stop_stop_area)
+            .where(stop_stop_area.name.ilike(f"%{name}%"))
+            .options(
+                selectinload(stop_stop_area.areas),
+                selectinload(stop_stop_area.lines),
+            )
+        )
+        res = await cls.db.session.execute(stmt)
+        return res.scalars()
+
+
+class Stop(_Stop):
+
+    id = Column(BigInteger, ForeignKey("_stops.id"), primary_key=True)
+
+    latitude = Column(Float, nullable=False)
+    longitude = Column(Float, nullable=False)
+    transport_mode = Column(Enum(TransportMode), nullable=False)
+    accessibility = Column(Enum(IdfmState), nullable=False)
+    visual_signs_available = Column(Enum(IdfmState), nullable=False)
+    audible_signs_available = Column(Enum(IdfmState), nullable=False)
+    record_id = Column(String, nullable=False)
+    record_ts = Column(BigInteger, nullable=False)
+
+    __tablename__ = "stops"
+    __mapper_args__ = {"polymorphic_identity": "stops", "polymorphic_load": "inline"}
+
+
+class StopArea(_Stop):
+
+    id = Column(BigInteger, ForeignKey("_stops.id"), primary_key=True)
+
+    type = Column(Enum(StopAreaType), nullable=False)
+    stops: Mapped[list[_Stop]] = relationship(
+        _Stop,
+        secondary=stop_area_stop_association_table,
+        back_populates="areas",
+        lazy="selectin",
+        # lazy="joined",
+    )
+
+    __tablename__ = "stop_areas"
+    __mapper_args__ = {"polymorphic_identity": "stop_areas", "polymorphic_load": "inline"}
+
+    @classmethod
+    async def add_stops(cls, stop_area_to_stop_ids: Iterable[tuple[str, str]]) -> int:
+        stop_area_ids, stop_ids = set(), set()
+        for stop_area_id, stop_id in stop_area_to_stop_ids:
+            stop_area_ids.add(stop_area_id)
+            stop_ids.add(stop_id)
+
+        res = await cls.db.session.execute(
+            select(StopArea)
+            .where(StopArea.id.in_(stop_area_ids))
+            .options(selectinload(StopArea.stops))
+        )
+        stop_areas = {stop_area.id: stop_area for stop_area in res.scalars()}
+
+        res = await cls.db.session.execute(select(_Stop).where(_Stop.id.in_(stop_ids)))
+        stops = {stop.id: stop for stop in res.scalars()}
+
+        found = 0
+        for stop_area_id, stop_id in stop_area_to_stop_ids:
+            if (stop_area := stop_areas.get(stop_area_id)) is not None:
+                if (stop := stops.get(stop_id)) is not None:
+                    stop_area.stops.append(stop)
+                    found += 1
+                else:
+                    print(f"No stop found for {stop_id} id")
+            else:
+                print(f"No stop area found for {stop_area_id}")
+
+        await cls.db.session.commit()
+        return found

backend/idfm_matrix_backend/models/user.py

@@ -0,0 +1,25 @@
+from sqlalchemy import Column, ForeignKey, String, Table
+from sqlalchemy.orm import Mapped, relationship
+
+from ..db import Base, db
+from .stop import _Stop
+
+user_last_stop_search_stops_associations_table = Table(
+    "user_last_stop_search_stops_associations_table",
+    Base.metadata,
+    Column("user_mxid", ForeignKey("user_last_stop_search_results.user_mxid")),
+    Column("stop_id", ForeignKey("_stops.id")),
+)
+
+
+class UserLastStopSearchResults(Base):
+
+    db = db
+
+    __tablename__ = "user_last_stop_search_results"
+
+    user_mxid = Column(String, primary_key=True)
+    request_content = Column(String, nullable=False)
+    stops: Mapped[list[_Stop]] = relationship(
+        _Stop, secondary=user_last_stop_search_stops_associations_table
+    )

backend/idfm_matrix_backend/schemas/__init__.py

@@ -0,0 +1,3 @@
+from .line import Line, TransportMode
+from .next_passage import NextPassage, NextPassages
+from .stop import Stop, StopArea

backend/idfm_matrix_backend/schemas/line.py

@@ -0,0 +1,60 @@
+from enum import StrEnum
+from typing import Self
+
+from pydantic import BaseModel
+
+from ..idfm_interface import (
+    IdfmLineState,
+    IdfmState,
+    TransportMode as IdfmTransportMode,
+    TransportSubMode as IdfmTransportSubMode,
+)
+
+
+class TransportMode(StrEnum):
+    """Computed transport mode from
+    idfm_interface.TransportMode and idfm_interface.TransportSubMode.
+    """
+
+    bus = "bus"
+    tram = "tram"
+    metro = "metro"
+    funicular = "funicular"
+    # idfm_types.TransportMode.rail + idfm_types.TransportSubMode.regionalRail
+    rail_ter = "ter"
+    # idfm_types.TransportMode.rail + idfm_types.TransportSubMode.local
+    rail_rer = "rer"
+    # idfm_types.TransportMode.rail + idfm_types.TransportSubMode.suburbanRailway
+    rail_transilien = "transilien"
+    # idfm_types.TransportMode.rail + idfm_types.TransportSubMode.railShuttle
+    val = "val"
+
+    @classmethod
+    def from_idfm_transport_mode(
+        cls, mode: IdfmTransportMode, sub_mode: IdfmTransportSubMode
+    ) -> Self:
+        if mode == IdfmTransportMode.rail:
+            if sub_mode == IdfmTransportSubMode.regionalRail:
+                return cls.rail_ter
+            if sub_mode == IdfmTransportSubMode.local:
+                return cls.rail_rer
+            if sub_mode == IdfmTransportSubMode.suburbanRailway:
+                return cls.rail_transilien
+            if sub_mode == IdfmTransportSubMode.railShuttle:
+                return cls.val
+        return TransportMode(mode)
+
+
+class Line(BaseModel):
+    id: str
+    shortName: str
+    name: str
+    status: IdfmLineState
+    transportMode: TransportMode
+    backColorHexa: str
+    foreColorHexa: str
+    operatorId: str
+    accessibility: IdfmState
+    visualSignsAvailable: IdfmState
+    audibleSignsAvailable: IdfmState
+    stopIds: list[str]

backend/idfm_matrix_backend/schemas/next_passage.py

@@ -0,0 +1,22 @@
+from pydantic import BaseModel
+
+from ..idfm_interface.idfm_types import TrainStatus
+
+
+class NextPassage(BaseModel):
+    line: str
+    operator: str
+    destinations: list[str]
+    atStop: bool
+    aimedArrivalTs: None | int
+    expectedArrivalTs: None | int
+    arrivalPlatformName: None | str
+    aimedDepartTs: None | int
+    expectedDepartTs: None | int
+    arrivalStatus: TrainStatus
+    departStatus: TrainStatus
+
+
+class NextPassages(BaseModel):
+    ts: int
+    passages: dict[str, dict[str, list[NextPassage]]]

backend/idfm_matrix_backend/schemas/stop.py

@@ -0,0 +1,25 @@
+from pydantic import BaseModel
+
+from ..idfm_interface import IdfmLineState, IdfmState, StopAreaType, TransportMode
+
+
+class Stop(BaseModel):
+    id: int
+    name: str
+    town: str
+    lat: float
+    lon: float
+    # xepsg2154: int
+    # yepsg2154: int
+    lines: list[str]
+
+
+class StopArea(BaseModel):
+    id: int
+    name: str
+    town: str
+    # xepsg2154: int
+    # yepsg2154: int
+    type: StopAreaType
+    lines: list[str]  # SNCF lines are linked to stop areas and not stops.
+    stops: list[Stop]

backend/main.py

@@ -0,0 +1,208 @@
+from collections import defaultdict
+from datetime import datetime
+from os import environ
+
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
+from fastapi.staticfiles import StaticFiles
+from rich import print
+
+from idfm_matrix_backend.db import db
+from idfm_matrix_backend.idfm_interface import IdfmInterface
+from idfm_matrix_backend.models import Line, Stop, StopArea
+from idfm_matrix_backend.schemas import (
+    Line as LineSchema,
+    TransportMode,
+    NextPassage as NextPassageSchema,
+    NextPassages as NextPassagesSchema,
+    Stop as StopSchema,
+    StopArea as StopAreaSchema,
+)
+
+API_KEY = environ.get("API_KEY")
+# TODO: Add error message if no key is given.
+
+# TODO: Remove postgresql+asyncpg from environ variable
+DB_PATH = "postgresql+asyncpg://postgres:postgres@127.0.0.1:5438/idfm"
+
+
+app = FastAPI()
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[
+        "https://localhost:4443",
+        "https://localhost:3000",
+    ],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+idfm_interface = IdfmInterface(API_KEY, db)
+
+
+@app.on_event("startup")
+async def startup():
+    # await db.connect(DB_PATH, clear_static_data=True)
+    # await idfm_interface.startup()
+    await db.connect(DB_PATH, clear_static_data=False)
+    print("Connected")
+
+
+@app.on_event("shutdown")
+async def shutdown():
+    await db.disconnect()
+
+
+# /addwidget https://localhost:4443/static/#?widgetId=$matrix_widget_id&userId=$matrix_user_id
+# /addwidget https://localhost:3000/widget?widgetId=$matrix_widget_id&userId=$matrix_user_id
+STATIC_ROOT = "../frontend/"
+app.mount("/widget", StaticFiles(directory=STATIC_ROOT, html=True), name="widget")
+
+
+def optional_datetime_to_ts(dt: datetime) -> int | None:
+    return dt.timestamp() if dt else None
+
+
+@app.get("/line/{line_id}", response_model=LineSchema)
+async def get_line(line_id: str) -> JSONResponse:
+    line: Line | None = await Line.get_by_id(line_id)
+
+    if line is None:
+        raise HTTPException(status_code=404, detail=f'Line "{line_id}" not found')
+
+    return LineSchema(
+        id=line.id,
+        shortName=line.short_name,
+        name=line.name,
+        status=line.status,
+        transportMode=TransportMode.from_idfm_transport_mode(
+            line.transport_mode, line.transport_submode
+        ),
+        backColorHexa=line.colour_web_hexa,
+        foreColorHexa=line.text_colour_hexa,
+        operatorId=line.operator_id,
+        accessibility=line.accessibility,
+        visualSignsAvailable=line.visual_signs_available,
+        audibleSignsAvailable=line.audible_signs_available,
+        stopIds=[stop.id for stop in line.stops],
+    )
+
+
+def _format_stop(stop: Stop) -> StopSchema:
+    print(stop.__dict__)
+    return StopSchema(
+        id=stop.id,
+        name=stop.name,
+        town=stop.town_name,
+        # xepsg2154=stop.xepsg2154,
+        # yepsg2154=stop.yepsg2154,
+        lat=stop.latitude,
+        lon=stop.longitude,
+        lines=[line.id for line in stop.lines],
+    )
+
+# châtelet
+
+@app.get("/stop/")
+async def get_stop(
+    name: str = "", limit: int = 10
+) -> list[StopAreaSchema | StopSchema]:
+    # TODO: Add limit support
+
+    formatted = []
+    matching_stops = await Stop.get_by_name(name)
+    # print(matching_stops, flush=True)
+
+    stop_areas: dict[int, StopArea] = {}
+    stops: dict[int, Stop] = {}
+    for stop in matching_stops:
+        # print(f"{stop.__dict__ = }", flush=True)
+        dst = stop_areas if isinstance(stop, StopArea) else stops
+        dst[stop.id] = stop
+
+    for stop_area in stop_areas.values():
+
+        formatted_stops = []
+        for stop in stop_area.stops:
+            formatted_stops.append(_format_stop(stop))
+            try:
+                del stops[stop.id]
+            except KeyError as err:
+                print(err)
+
+        formatted.append(
+            StopAreaSchema(
+                id=stop_area.id,
+                name=stop_area.name,
+                town=stop_area.town_name,
+                # xepsg2154=stop_area.xepsg2154,
+                # yepsg2154=stop_area.yepsg2154,
+                type=stop_area.type,
+                lines=[line.id for line in stop_area.lines],
+                stops=formatted_stops,
+            )
+        )
+
+    # print(f"{stops = }", flush=True)
+    formatted.extend(_format_stop(stop) for stop in stops.values())
+
+    return formatted
+
+
+# TODO: Cache response for 30 secs ?
+@app.get("/stop/nextPassages/{stop_id}")
+async def get_next_passages(stop_id: str) -> JSONResponse:
+    res = await idfm_interface.get_next_passages(stop_id)
+
+    # print(res)
+
+    service_delivery = res.Siri.ServiceDelivery
+    stop_monitoring_deliveries = service_delivery.StopMonitoringDelivery
+
+    by_line_by_dst_passages = defaultdict(lambda: defaultdict(list))
+
+    for delivery in stop_monitoring_deliveries:
+        for stop_visit in delivery.MonitoredStopVisit:
+
+            journey = stop_visit.MonitoredVehicleJourney
+
+            # re.match will return None if the given journey.LineRef.value is not valid.
+            try:
+                line_id = IdfmInterface.LINE_RE.match(journey.LineRef.value).group(1)
+            except AttributeError as exc:
+                raise HTTPException(
+                    status_code=404, detail=f'Line "{journey.LineRef.value}" not found'
+                ) from exc
+
+            call = journey.MonitoredCall
+
+            dst_names = call.DestinationDisplay
+            dsts = [dst.value for dst in dst_names] if dst_names else []
+
+            print(f"{call.ArrivalPlatformName = }")
+
+            next_passage = NextPassageSchema(
+                line=line_id,
+                operator=journey.OperatorRef.value,
+                destinations=dsts,
+                atStop=call.VehicleAtStop,
+                aimedArrivalTs=optional_datetime_to_ts(call.AimedArrivalTime),
+                expectedArrivalTs=optional_datetime_to_ts(call.ExpectedArrivalTime),
+                arrivalPlatformName=call.ArrivalPlatformName.value if call.ArrivalPlatformName else None,
+                aimedDepartTs=optional_datetime_to_ts(call.AimedDepartureTime),
+                expectedDepartTs=optional_datetime_to_ts(call.ExpectedDepartureTime),
+                arrivalStatus=call.ArrivalStatus.value,
+                departStatus=call.DepartureStatus.value,
+            )
+
+            by_line_passages = by_line_by_dst_passages[line_id]
+            # TODO: by_line_passages[dst].extend(dsts) instead ?
+            for dst in dsts:
+                by_line_passages[dst].append(next_passage)
+
+    return NextPassagesSchema(
+        ts=service_delivery.ResponseTimestamp.timestamp(),
+        passages=by_line_by_dst_passages,
+    )

backend/pyproject.toml

@@ -0,0 +1,58 @@
+[tool.poetry]
+name = "idfm-matrix-widget"
+version = "0.1.0"
+description = ""
+authors = ["Adrien SUEUR <me@adrien.run>"]
+readme = "README.md"
+packages = [{include = "idfm_matrix_backend"}]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+aiohttp = "^3.8.3"
+rich = "^12.6.0"
+aiofiles = "^22.1.0"
+sqlalchemy = {extras = ["asyncio"], version = "^1.4.46"}
+fastapi = "^0.88.0"
+uvicorn = "^0.20.0"
+asyncpg = "^0.27.0"
+msgspec = "^0.12.0"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.poetry.dev-dependencies]
+mypy = "^0.971"
+pylsp-mypy = "^0.6.2"
+autopep8 = "^1.7.0"
+mccabe = "^0.7.0"
+pycodestyle = "^2.9.1"
+pydocstyle = "^6.1.1"
+pyflakes = "^2.5.0"
+pylint = "^2.14.5"
+rope = "^1.3.0"
+python-lsp-server = {extras = ["yapf"], version = "^1.5.0"}
+python-lsp-black = "^1.2.1"
+black = "^22.10.0"
+whatthepatch = "^1.0.2"
+
+[tool.poetry.group.dev.dependencies]
+types-aiofiles = "^22.1.0.2"
+sqlalchemy-stubs = "^0.4"
+wrapt = "^1.14.1"
+pydocstyle = "^6.2.2"
+pylint = "^2.15.9"
+dill = "^0.3.6"
+
+[tool.pylsp-mypy]
+enabled = true
+
+[mypy]
+plugins = "sqlmypy"
+
+[pycodestyle]
+max_line_length = 100
+
+[pylint]
+max-line-length = 100
+