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

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


class LoadingReport(db.Model, TimestampMixin, SoftDeleteMixin):
    """Отчёт о загрузке кормосмесителя."""

    __bind_key__ = "reports"
    __tablename__ = "loading_report"

    id = Column(String(36), primary_key=True, default=default_uuid)
    recipe_id = Column(String(36), nullable=False)
    recipe_name = Column(String(100), nullable=False)
    start_time = Column(DateTime, nullable=False)
    end_time = Column(DateTime)
    target_mixing_time = Column(Integer)
    actual_mixing_time = Column(Integer)
    total_weight = Column(Float)
    dispenser_type = Column(String(20), nullable=False, default="dispenser")

    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")
    client_id = Column(String(50), nullable=True)
    server_synced = Column(db.Boolean, default=False, nullable=False)
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    components = relationship(
        "LoadingReportComponent",
        back_populates="report",
        cascade="all, delete-orphan",
        passive_deletes=True,
    )
    component_loading_times = relationship(
        "ComponentLoadingTime",
        back_populates="report",
        cascade="all, delete-orphan",
        passive_deletes=True,
    )


class LoadingReportComponent(db.Model, TimestampMixin, SoftDeleteMixin):
    """Строка отчёта о загрузке (по компоненту)."""

    __bind_key__ = "reports"
    __tablename__ = "loading_report_component"

    id = Column(String(36), primary_key=True, default=default_uuid)
    report_id = Column(
        String(36), ForeignKey("loading_report.id"), nullable=False, index=True
    )
    component_id = Column(String(36), nullable=True, index=True)
    component_name = Column(String(100), nullable=False)
    target_weight = Column(Float, nullable=False)
    actual_weight = Column(Float, nullable=False)
    overload = Column(Float)
    loading_order = Column(Integer, nullable=False)

    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="")

    report = relationship("LoadingReport", back_populates="components")


class ComponentLoadingTime(db.Model, TimestampMixin, SoftDeleteMixin):
    """Временные метки начала/конца загрузки компонента."""

    __bind_key__ = "reports"
    __tablename__ = "component_loading_time"

    id = Column(String(36), primary_key=True, default=default_uuid)
    report_id = Column(
        String(36), ForeignKey("loading_report.id"), nullable=False, index=True
    )
    component_name = Column(String(100), nullable=False)
    start_time = Column(DateTime, nullable=False)
    end_time = Column(DateTime, nullable=False)
    loading_duration = Column(Float, nullable=False)
    loading_order = Column(Integer, nullable=False)

    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="")

    report = relationship("LoadingReport", back_populates="component_loading_times")


class UnloadingReport(db.Model, TimestampMixin, SoftDeleteMixin):
    """Отчёт о выгрузке."""

    __bind_key__ = "reports"
    __tablename__ = "unloading_report"

    id = Column(String(36), primary_key=True, default=default_uuid)
    recipe_id = Column(String(36), nullable=False)
    recipe_name = Column(String(100), nullable=False)
    loading_report_id = Column(String(36), nullable=False)
    start_time = Column(DateTime, nullable=False)
    end_time = Column(DateTime)
    total_weight = Column(Float, nullable=False)
    total_unloaded_weight = Column(Float, nullable=False)
    remaining_weight = Column(Float, nullable=False)

    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")
    client_id = Column(String(50), nullable=True)
    server_synced = Column(db.Boolean, default=False, nullable=False)
    sync_timestamp = Column(DateTime, nullable=True)
    sync_status = Column(String(20), default="pending", nullable=False)
    content_hash = Column(String(64), nullable=False, default="")

    groups = relationship(
        "UnloadingReportGroup",
        back_populates="report",
        cascade="all, delete-orphan",
        passive_deletes=True,
    )


class UnloadingReportGroup(db.Model, TimestampMixin, SoftDeleteMixin):
    """Строка отчёта о выгрузке по группе."""

    __bind_key__ = "reports"
    __tablename__ = "unloading_report_group"

    id = Column(String(36), primary_key=True, default=default_uuid)
    report_id = Column(
        String(36), ForeignKey("unloading_report.id"), nullable=False, index=True
    )
    name = Column(String(100), nullable=False)
    target_weight = Column(Float, nullable=False)
    unloaded_weight = Column(Float, nullable=False)
    remaining_weight = Column(Float, nullable=False)
    distribution_type = Column(String(20), nullable=False)
    distribution_value = Column(Float, nullable=False)
    order = Column(Integer, nullable=False)

    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="")

    report = relationship("UnloadingReport", back_populates="groups")