refacto: rename app into backend, to prepare for frontend dev

server/backend/domain/entities/__init__.py

@@ -0,0 +1,4 @@
+from .uplink_event import UplinkEvent
+from .consumption_point import ConsumptionPoint, ConsumptionResponse
+
+__all__ = ["UplinkEvent", "ConsumptionPoint", "ConsumptionResponse"]

server/backend/domain/entities/consumption_point.py

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+from dataclasses import dataclass
+from datetime import datetime
+from domain.value_objects import Granularity
+
+@dataclass
+class ConsumptionPoint:
+    period: datetime
+    pulse_count_start: int
+    pulse_count_end: int
+    delta_pulses: int
+    delta_m3: float
+
+@dataclass
+class ConsumptionResponse:
+    dev_eui: str
+    start: datetime
+    end: datetime
+    granularity: Granularity
+    points: list[ConsumptionPoint]

server/backend/domain/entities/uplink_event.py

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+from dataclasses import dataclass
+
+@dataclass
+class UplinkEvent:
+    dev_eui: str
+    pulse_count: int

server/backend/domain/exceptions.py

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+class DomainError(Exception):
+    """Base pour toutes les erreurs de domaine"""
+
+class InfrastructureError(Exception):
+    """Erreur technique levée par un adapter"""
+
+class DatabaseConnectionError(InfrastructureError):
+    """Impossible de se connecter à la db"""
+
+class DatabaseError(InfrastructureError):
+    """Erreur lors d'une opération en base de données."""
+
+class MessageBrokerError(InfrastructureError):
+    """Impossible de se connecter au broker MQTT"""
+
+class ValidationError(DomainError):
+    """Données d'entrée invalides"""

server/backend/domain/value_objects.py

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+from typing import Literal
+
+Granularity = Literal["hour", "day", "month"]