from sqlalchemy import Boolean, Column, DateTime, Float, ForeignKey, Integer, String
from sqlalchemy.orm import relationship

from app import db
from .base import SoftDeleteMixin, TimestampMixin, default_uuid


class FeedMixer(db.Model, TimestampMixin, SoftDeleteMixin):
    """Кормосмеситель."""

    __tablename__ = "feed_mixer"

    id = Column(String(36), primary_key=True, default=default_uuid)
    name = Column(String(100), nullable=False)
    model = Column(String(100))
    gosnomer = Column(String(20))
    operator = Column(String(100))
    ip_address = Column(String(15))
    is_active = Column(Boolean, default=True)

    version = Column(Integer, default=1, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    trips = relationship(
        "Trip",
        back_populates="mixer",
        cascade="all, delete-orphan",
        passive_deletes=True,
    )


class FeedDispenser(db.Model, TimestampMixin, SoftDeleteMixin):
    """Кормораздатчик (шкаф управления)."""

    __tablename__ = "feed_dispenser"

    id = Column(String(36), primary_key=True, default=default_uuid)
    name = Column(String(100), nullable=False)
    farm = Column(String(100), nullable=False)
    operator = Column(String(100), nullable=False)
    type = Column(String(20), nullable=False, default="dispenser")
    is_active = Column(Boolean, default=True)

    version = Column(Integer, default=1, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    periods = relationship(
        "FeedingPeriod",
        back_populates="dispenser",
        cascade="all, delete-orphan",
        passive_deletes=True,
    )


class FeedingLocation(db.Model, TimestampMixin, SoftDeleteMixin):
    """Место кормления (группа точек выгрузки)."""

    __tablename__ = "feeding_location"

    id = Column(String(36), primary_key=True, default=default_uuid)
    name = Column(String(100), nullable=False)
    mixer_id = Column(String(36), ForeignKey("feed_mixer.id"), nullable=True)
    is_active = Column(Boolean, default=True)

    version = Column(Integer, default=1, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")


class FeedingPeriod(db.Model, TimestampMixin, SoftDeleteMixin):
    """Период кормления (расписание для кормораздатчика)."""

    __tablename__ = "feeding_period"

    id = Column(String(36), primary_key=True, default=default_uuid)
    name = Column(String(100), nullable=False)
    dispenser_id = Column(
        String(36), ForeignKey("feed_dispenser.id"), nullable=False
    )
    is_active = Column(Boolean, default=True)

    version = Column(Integer, default=1, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    recipes = relationship(
        "Recipe",
        secondary="period_recipes",
        backref="feeding_periods",
        lazy="joined",
        overlaps="period_recipes_rel",
    )
    period_recipes_rel = relationship(
        "PeriodRecipe",
        cascade="all, delete-orphan",
        passive_deletes=True,
        overlaps="feeding_periods,recipes",
    )
    dispenser = relationship("FeedDispenser", back_populates="periods")


class FeedingPoint(db.Model, TimestampMixin, SoftDeleteMixin):
    """Точка кормления (конкретное место выгрузки)."""

    __tablename__ = "feeding_point"

    id = Column(String(36), primary_key=True, default=default_uuid)
    name = Column(String(100), nullable=False)
    mixer_id = Column(String(36), ForeignKey("feed_mixer.id"), nullable=True)
    location_id = Column(
        String(36), ForeignKey("feeding_location.id"), nullable=True
    )
    period_id = Column(
        String(36), ForeignKey("feeding_period.id"), nullable=True
    )
    is_active = Column(Boolean, default=True)

    version = Column(Integer, default=1, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")


class Trip(db.Model, TimestampMixin, SoftDeleteMixin):
    """Рейс кормораздатчика."""

    __tablename__ = "trip"

    id = Column(String(36), primary_key=True, default=default_uuid)
    mixer_id = Column(String(36), ForeignKey("feed_mixer.id"), nullable=False)
    recipe_id = Column(String(36), ForeignKey("recipe.id"), nullable=False)
    daily_ration_percent = Column(Float, nullable=False)
    heads_count = Column(Integer, nullable=False)
    mixing_time = Column(Integer, nullable=False)
    correction_percent = Column(Float, nullable=False)
    status = Column(String(20), nullable=False)
    created_at = Column(DateTime, nullable=False)
    started_at = Column(DateTime)
    completed_at = Column(DateTime)

    version = Column(Integer, default=1, nullable=False)
    updated_at = Column(DateTime, nullable=False)
    created_by = Column(String(50), nullable=False, default="system")
    updated_by = Column(String(50), nullable=False, default="system")
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    mixer = relationship("FeedMixer", back_populates="trips")
    recipe = relationship("Recipe", back_populates="trips")