Merge commit 'd8e4449f1009bc03b167c0e5667413585b2b3e53' as 'core'

core/backend/app/models/pricing.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, Integer, String, Float, Boolean, DateTime, ForeignKey, JSON
+from sqlalchemy.sql import func
+from app.core.database import Base
+
+
+class ElectricityPricing(Base):
+    """电价配置"""
+    __tablename__ = "electricity_pricing"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(200), nullable=False)
+    energy_type = Column(String(50), default="electricity")  # electricity, heat, water, gas
+    pricing_type = Column(String(20), nullable=False)  # flat, tou, tiered
+    effective_from = Column(DateTime(timezone=True))
+    effective_to = Column(DateTime(timezone=True))
+    is_active = Column(Boolean, default=True)
+    created_by = Column(Integer, ForeignKey("users.id"))
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+
+
+class PricingPeriod(Base):
+    """分时电价时段"""
+    __tablename__ = "pricing_periods"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    pricing_id = Column(Integer, ForeignKey("electricity_pricing.id"), nullable=False)
+    period_name = Column(String(50), nullable=False)  # peak, valley, flat, shoulder, sharp
+    start_time = Column(String(10), nullable=False)  # HH:MM format
+    end_time = Column(String(10), nullable=False)  # HH:MM format
+    price_per_unit = Column(Float, nullable=False)  # yuan per kWh
+    applicable_months = Column(JSON)  # [1,2,3,...12] or null for all months
+    created_at = Column(DateTime(timezone=True), server_default=func.now())