Squashed 'core/' content from commit 92ec910

git-subtree-dir: core
git-subtree-split: 92ec910a132e379a3a6e442a75bcb07cac0f0010

backend/app/models/charging.py

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+from sqlalchemy import Column, Integer, String, Float, Boolean, DateTime, ForeignKey, Text, JSON, BigInteger
+from sqlalchemy.sql import func
+from app.core.database import Base
+
+
+class ChargingStation(Base):
+    __tablename__ = "charging_stations"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(200), nullable=False)
+    merchant_id = Column(Integer, ForeignKey("charging_merchants.id"))
+    type = Column(String(50))  # public, private, dedicated
+    address = Column(String(500))
+    latitude = Column(Float)
+    longitude = Column(Float)
+    price = Column(Float)  # default price yuan/kWh
+    activity = Column(Text)  # promotions text
+    status = Column(String(20), default="active")  # active, disabled
+    total_piles = Column(Integer, default=0)
+    available_piles = Column(Integer, default=0)
+    total_power_kw = Column(Float, default=0)
+    photo_url = Column(String(500))
+    operating_hours = Column(String(100))  # e.g. "00:00-24:00"
+    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 ChargingPile(Base):
+    __tablename__ = "charging_piles"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    station_id = Column(Integer, ForeignKey("charging_stations.id"), nullable=False)
+    encoding = Column(String(100), unique=True)  # terminal code
+    name = Column(String(200))
+    type = Column(String(50))  # AC_slow, DC_fast, DC_superfast
+    brand = Column(String(100))
+    model = Column(String(100))
+    rated_power_kw = Column(Float)
+    connector_type = Column(String(50))  # GB_T, CCS, CHAdeMO
+    status = Column(String(20), default="active")  # active, disabled
+    work_status = Column(String(20), default="offline")  # idle, charging, fault, offline
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+
+
+class ChargingPriceStrategy(Base):
+    __tablename__ = "charging_price_strategies"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    strategy_name = Column(String(200), nullable=False)
+    station_id = Column(Integer, ForeignKey("charging_stations.id"))
+    bill_model = Column(String(20))  # tou, flat
+    description = Column(Text)
+    status = Column(String(20), default="inactive")  # active, inactive
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+
+
+class ChargingPriceParam(Base):
+    __tablename__ = "charging_price_params"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    strategy_id = Column(Integer, ForeignKey("charging_price_strategies.id"), nullable=False)
+    start_time = Column(String(10), nullable=False)  # HH:MM
+    end_time = Column(String(10), nullable=False)
+    period_mark = Column(String(20))  # sharp, peak, flat, valley
+    elec_price = Column(Float, nullable=False)  # yuan/kWh
+    service_price = Column(Float, default=0)  # yuan/kWh
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
+class ChargingOrder(Base):
+    __tablename__ = "charging_orders"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    order_no = Column(String(50), unique=True, nullable=False)
+    user_id = Column(Integer)
+    user_name = Column(String(100))
+    phone = Column(String(20))
+    station_id = Column(Integer, ForeignKey("charging_stations.id"))
+    station_name = Column(String(200))
+    pile_id = Column(Integer, ForeignKey("charging_piles.id"))
+    pile_name = Column(String(200))
+    start_time = Column(DateTime(timezone=True))
+    end_time = Column(DateTime(timezone=True))
+    car_no = Column(String(20))  # license plate
+    car_vin = Column(String(50))
+    charge_method = Column(String(20))  # plug_and_charge, app, card
+    settle_type = Column(String(20))  # normal, manual, delayed, abnormal, offline
+    pay_type = Column(String(20))  # balance, wechat, alipay
+    settle_time = Column(DateTime(timezone=True))
+    settle_price = Column(Float)  # settlement amount
+    paid_price = Column(Float)  # actual paid
+    discount_amt = Column(Float, default=0)
+    elec_amt = Column(Float)  # electricity fee
+    serve_amt = Column(Float)  # service fee
+    order_status = Column(String(20), default="charging")  # charging, pending_pay, completed, failed, refunded
+    charge_duration = Column(Integer)  # seconds
+    energy = Column(Float)  # kWh delivered
+    start_soc = Column(Float)  # battery start %
+    end_soc = Column(Float)  # battery end %
+    abno_cause = Column(Text)  # abnormal reason
+    order_source = Column(String(20))  # miniprogram, pc, app
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
+class OccupancyOrder(Base):
+    __tablename__ = "occupancy_orders"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    order_id = Column(Integer, ForeignKey("charging_orders.id"))
+    pile_id = Column(Integer, ForeignKey("charging_piles.id"))
+    start_time = Column(DateTime(timezone=True))
+    end_time = Column(DateTime(timezone=True))
+    occupancy_fee = Column(Float, default=0)
+    status = Column(String(20), default="active")
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
+class ChargingBrand(Base):
+    __tablename__ = "charging_brands"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    brand_name = Column(String(100), nullable=False)
+    logo_url = Column(String(500))
+    country = Column(String(50))
+    description = Column(Text)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
+class ChargingMerchant(Base):
+    __tablename__ = "charging_merchants"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(200), nullable=False)
+    contact_person = Column(String(100))
+    phone = Column(String(20))
+    email = Column(String(100))
+    address = Column(String(500))
+    business_license = Column(String(100))
+    status = Column(String(20), default="active")
+    settlement_type = Column(String(20))  # prepaid, postpaid
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())