🎉 First commit !!!

backend/idfm_matrix_backend/schemas/__init__.py

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+from .line import Line, TransportMode
+from .next_passage import NextPassage, NextPassages
+from .stop import Stop, StopArea

backend/idfm_matrix_backend/schemas/line.py

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+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

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+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

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+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]