from __future__ import annotations

from sqlalchemy import Boolean, Float, ForeignKey, Integer, JSON, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base, TimestampMixin, UUIDPrimaryKeyMixin


class Mine(UUIDPrimaryKeyMixin, TimestampMixin, Base):
    __tablename__ = "mines"

    code: Mapped[str] = mapped_column(String(64), unique=True, index=True)
    name: Mapped[str] = mapped_column(String(128), index=True)
    short_name: Mapped[str] = mapped_column(String(64), default="")
    province: Mapped[str] = mapped_column(String(64), default="")
    city: Mapped[str] = mapped_column(String(64), default="")
    status: Mapped[str] = mapped_column(String(32), default="active", index=True)
    production_capacity: Mapped[float | None] = mapped_column(Float, nullable=True)
    design_capacity: Mapped[float | None] = mapped_column(Float, nullable=True)
    ventilation_method: Mapped[str] = mapped_column(String(64), default="")
    description: Mapped[str] = mapped_column(Text, default="")
    settings: Mapped[dict] = mapped_column(JSON, default=dict)
    is_default: Mapped[bool] = mapped_column(Boolean, default=False, index=True)


class MineArea(UUIDPrimaryKeyMixin, TimestampMixin, Base):
    __tablename__ = "mine_areas"

    mine_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("mines.id", ondelete="CASCADE"), index=True
    )
    code: Mapped[str] = mapped_column(String(64), index=True)
    name: Mapped[str] = mapped_column(String(128))
    area_type: Mapped[str] = mapped_column(String(32), default="采区")
    depth: Mapped[float | None] = mapped_column(Float, nullable=True)
    status: Mapped[str] = mapped_column(String(32), default="active")
    description: Mapped[str] = mapped_column(Text, default="")


class WorkFace(UUIDPrimaryKeyMixin, TimestampMixin, Base):
    __tablename__ = "work_faces"

    mine_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("mines.id", ondelete="CASCADE"), index=True
    )
    area_id: Mapped[str | None] = mapped_column(
        String(32), ForeignKey("mine_areas.id", ondelete="SET NULL"), nullable=True, index=True
    )
    code: Mapped[str] = mapped_column(String(64), index=True)
    name: Mapped[str] = mapped_column(String(128))
    face_type: Mapped[str] = mapped_column(String(32), default="采煤工作面")
    status: Mapped[str] = mapped_column(String(32), default="active")
    planned_air_volume: Mapped[float | None] = mapped_column(Float, nullable=True)
    actual_air_volume: Mapped[float | None] = mapped_column(Float, nullable=True)
    gas_limit: Mapped[float | None] = mapped_column(Float, nullable=True)
    dust_limit: Mapped[float | None] = mapped_column(Float, nullable=True)
    location: Mapped[dict] = mapped_column(JSON, default=dict)


class Roadway(UUIDPrimaryKeyMixin, TimestampMixin, Base):
    __tablename__ = "roadways"

    mine_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("mines.id", ondelete="CASCADE"), index=True
    )
    area_id: Mapped[str | None] = mapped_column(
        String(32), ForeignKey("mine_areas.id", ondelete="SET NULL"), nullable=True, index=True
    )
    code: Mapped[str] = mapped_column(String(64), index=True)
    name: Mapped[str] = mapped_column(String(128))
    roadway_type: Mapped[str] = mapped_column(String(32), default="回风巷")
    start_node: Mapped[str] = mapped_column(String(128), default="")
    end_node: Mapped[str] = mapped_column(String(128), default="")
    length: Mapped[float | None] = mapped_column(Float, nullable=True)
    cross_section_area: Mapped[float | None] = mapped_column(Float, nullable=True)
    resistance: Mapped[float | None] = mapped_column(Float, nullable=True)
    airflow: Mapped[float | None] = mapped_column(Float, nullable=True)
    status: Mapped[str] = mapped_column(String(32), default="normal", index=True)
    properties: Mapped[dict] = mapped_column(JSON, default=dict)