from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, Text
from sqlalchemy.sql import func
from app.core.database import Base


class Role(Base):
    __tablename__ = "roles"

    id = Column(Integer, primary_key=True, autoincrement=True)
    name = Column(String(50), unique=True, nullable=False)  # admin, energy_manager, area_manager, operator, analyst, visitor
    display_name = Column(String(100), nullable=False)
    description = Column(Text)
    permissions = Column(Text)  # JSON string of permission list
    created_at = Column(DateTime(timezone=True), server_default=func.now())


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, autoincrement=True)
    username = Column(String(50), unique=True, nullable=False, index=True)
    email = Column(String(100), unique=True)
    hashed_password = Column(String(200), nullable=False)
    full_name = Column(String(100))
    phone = Column(String(20))
    role = Column(String(50), ForeignKey("roles.name"), default="visitor")
    is_active = Column(Boolean, default=True)
    last_login = Column(DateTime(timezone=True))
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())


class AuditLog(Base):
    __tablename__ = "audit_logs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id"))
    action = Column(String(50), nullable=False)
    resource = Column(String(100))
    detail = Column(Text)
    ip_address = Column(String(50))
    created_at = Column(DateTime(timezone=True), server_default=func.now())