"""育种单株 数据模型"""
from datetime import datetime

from sqlalchemy import Float, ForeignKey, Index, Integer, String, Text, text
from sqlalchemy.orm import Mapped, mapped_column

from app.core.base_model import MappedBase, ModelMixin, UserMixin


class TreeModel(ModelMixin, UserMixin, MappedBase):
    """育种单株 主数据表。"""

    __tablename__ = "bre_tree"

    combination_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("bre_cross_combination.id", ondelete="CASCADE"),
        index=True, nullable=False, comment="杂交组合"
    )

    dam_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_germplasm.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="母本(种质)"
    )

    sire_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_germplasm.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="父本(种质)"
    )

    trial_study_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_trial_study.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="所属试验/站点(MET)"
    )

    block_no: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="区组号")

    rootstock_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_rootstock.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="砧木"
    )

    clone_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_clone.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="入选克隆"
    )

    plot_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("bre_plot.id", ondelete="CASCADE"),
        index=True, nullable=True, comment="试验地块/位置"
    )

    planting_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_planting.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="来源定植批次（一次定植包含多棵单株）"
    )

    tree_no: Mapped[str] = mapped_column(String(100), nullable=False, comment="单株编号")

    row_orientation: Mapped[str | None] = mapped_column(String(50), nullable=True, comment="行向", default=None)

    row_no: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="行数", default=None)

    col_no: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="列数", default=None)

    planted_date: Mapped[str | None] = mapped_column(String(20), nullable=True, comment="定植时间", default=None)

    bre_personnel_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("bre_personnel.id", ondelete="CASCADE"),
        index=True, nullable=True, comment="责任人"
    )

    status: Mapped[str | None] = mapped_column(String(50), nullable=True, comment="状态", default=None)

    remark: Mapped[str | None] = mapped_column(Text, nullable=True, comment="备注", default=None)

    stage: Mapped[str | None] = mapped_column(String(32), nullable=True, comment="当前育种阶段(breeding_stage)")
    generation: Mapped[str | None] = mapped_column(String(16), nullable=True, comment="世代(breeding_generation)")
    germplasm_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_germplasm.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="关联种质(晋升回填,不手填)"
    )
    entry_id: Mapped[int | None] = mapped_column(
        Integer, ForeignKey("bre_trial_study_entry.id", ondelete="SET NULL"),
        index=True, nullable=True, comment="参试条目(派生自定植)"
    )

    # 无 status 列：覆盖基类默认 ix_<表>_status_deleted 索引，
    # 仅保留 (created_time, is_deleted) 复合索引用于数据权限过滤。
    __table_args__ = (
        Index("ix_bre_tree_created_deleted", "created_time", "is_deleted"),
        # 单株编号全局唯一（仅约束未软删记录，与 service 层查重语义一致）
        Index(
            "uniq_bre_tree_no", "tree_no",
            unique=True, postgresql_where=text("is_deleted = false"),
        ),
    )


class TreePedigreeExclusionModel(ModelMixin, UserMixin, MappedBase):
    """系谱隔离注册表（v2.26 N1）：孟德尔检验 flag 的树断开声明亲本链（退化为 founder），
    自身表型保留；后续检验不再 flag 时行被清除（可逆）。系谱消费方据此置空 dam/sire。"""

    __tablename__ = "bre_pedigree_exclusion"

    tree_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("bre_tree.id", ondelete="CASCADE"),
        index=True, nullable=False, comment="单株"
    )
    reason: Mapped[str | None] = mapped_column(String(512), nullable=True, comment="隔离原因")
    source_type: Mapped[str | None] = mapped_column(String(32), nullable=True, comment="来源类型")
    source_check_id: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="来源检验批次ID")

    __table_args__ = (
        # 唯一树（同树仅一条隔离记录；同树多来源时按最新覆盖）
        Index(
            "uniq_bre_pedigree_exclusion_tree", "tree_id",
            unique=True, postgresql_where=text("is_deleted = false"),
        ),
        Index("ix_bre_pedigree_exclusion_created_deleted", "created_time", "is_deleted"),
    )