"""Tables of Annotation Management Module"""

import uuid
from sqlalchemy import (
    Column,
    String,
    Boolean,
    TIMESTAMP,
    Text,
    Integer,
    JSON,
    ForeignKey,
    UniqueConstraint,
    Index,
    BigInteger,
)
from sqlalchemy.sql import func

from app.db.session import Base

ANNOTATION_STATUS_ANNOTATED = "ANNOTATED"
ANNOTATION_STATUS_NO_ANNOTATION = "NO_ANNOTATION"
ANNOTATION_STATUS_NOT_APPLICABLE = "NOT_APPLICABLE"
ANNOTATION_STATUS_IN_PROGRESS = "IN_PROGRESS"
ANNOTATION_STATUS_VALUES = {
    ANNOTATION_STATUS_ANNOTATED,
    ANNOTATION_STATUS_NO_ANNOTATION,
    ANNOTATION_STATUS_NOT_APPLICABLE,
    ANNOTATION_STATUS_IN_PROGRESS,
}
ANNOTATION_STATUS_CLIENT_VALUES = {
    ANNOTATION_STATUS_ANNOTATED,
    ANNOTATION_STATUS_NO_ANNOTATION,
    ANNOTATION_STATUS_NOT_APPLICABLE,
}


class AnnotationTemplate(Base):
    """标注配置模板模型"""

    __tablename__ = "t_dm_annotation_templates"

    id = Column(
        String(64),
        primary_key=True,
        default=lambda: str(uuid.uuid4()),
        comment="模板ID（UUID或自定义ID）",
    )
    name = Column(String(100), nullable=False, comment="模板名称")
    description = Column(String(500), nullable=True, comment="模板描述")
    data_type = Column(
        String(50),
        nullable=False,
        comment="数据类型: image/text/audio/video/timeseries/pdf/chat/html/table",
    )
    labeling_type = Column(
        String(50), nullable=False, comment="标注类型: asr/ner/object-detection/等"
    )
    configuration = Column(
        JSON, nullable=True, comment="标注配置（兼容字段，主配置为 label_config）"
    )
    label_config = Column(
        Text, nullable=True, comment="Label Studio XML配置（模板主配置）"
    )
    style = Column(String(32), nullable=False, comment="样式配置: horizontal/vertical")
    category = Column(
        String(50),
        default="custom",
        comment="模板分类: audio-speech/chat/computer-vision/nlp/等",
    )
    built_in = Column(Boolean, default=False, comment="是否系统内置模板")
    version = Column(String(20), default="1.0", comment="模板版本")
    created_at = Column(
        TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间"
    )
    updated_at = Column(
        TIMESTAMP,
        server_default=func.current_timestamp(),
        onupdate=func.current_timestamp(),
        comment="更新时间",
    )
    deleted_at = Column(TIMESTAMP, nullable=True, comment="删除时间（软删除）")

    def __repr__(self):
        return f"<AnnotationTemplate(id={self.id}, name={self.name}, data_type={self.data_type})>"

    @property
    def is_deleted(self) -> bool:
        """检查是否已被软删除"""
        return self.deleted_at is not None


class LabelingProject(Base):
    """标注项目模型"""

    __tablename__ = "t_dm_labeling_projects"

    id = Column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID"
    )
    dataset_id = Column(String(36), nullable=False, comment="数据集ID")
    name = Column(String(100), nullable=False, comment="项目名称")
    labeling_project_id = Column(
        String(8), nullable=False, comment="Label Studio项目ID"
    )
    template_id = Column(
        String(64),
        ForeignKey("t_dm_annotation_templates.id", ondelete="SET NULL"),
        nullable=True,
        comment="使用的模板ID",
    )
    configuration = Column(
        JSON, nullable=True, comment="项目配置（可能包含对模板的自定义修改）"
    )
    progress = Column(JSON, nullable=True, comment="项目进度信息")
    created_at = Column(
        TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间"
    )
    updated_at = Column(
        TIMESTAMP,
        server_default=func.current_timestamp(),
        onupdate=func.current_timestamp(),
        comment="更新时间",
    )
    deleted_at = Column(TIMESTAMP, nullable=True, comment="删除时间（软删除）")

    def __repr__(self):
        return f"<LabelingProject(id={self.id}, name={self.name}, dataset_id={self.dataset_id})>"

    @property
    def is_deleted(self) -> bool:
        """检查是否已被软删除"""
        return self.deleted_at is not None


class LabelingProjectFile(Base):
    """标注项目文件快照模型"""

    __tablename__ = "t_dm_labeling_project_files"

    id = Column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID"
    )
    project_id = Column(String(36), nullable=False, comment="标注项目ID")
    file_id = Column(String(36), nullable=False, comment="文件ID")
    created_at = Column(
        TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间"
    )

    __table_args__ = (
        UniqueConstraint("project_id", "file_id", name="uk_project_file"),
        Index("idx_project_id", "project_id"),
        Index("idx_file_id", "file_id"),
    )

    def __repr__(self):
        return f"<LabelingProjectFile(id={self.id}, project_id={self.project_id}, file_id={self.file_id})>"


class AnnotationResult(Base):
    """标注结果模型（单人单份最终标签，Label Studio annotation 原始 JSON）"""

    __tablename__ = "t_dm_annotation_results"

    id = Column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID"
    )
    project_id = Column(
        String(36), nullable=False, comment="标注项目ID（t_dm_labeling_projects.id）"
    )
    file_id = Column(
        String(36), nullable=False, comment="文件ID（t_dm_dataset_files.id）"
    )
    annotation = Column(
        JSON,
        nullable=False,
        comment="Label Studio annotation 原始JSON（单人单份最终结果）",
    )
    annotation_status = Column(
        String(32),
        nullable=False,
        default=ANNOTATION_STATUS_ANNOTATED,
        comment="标注状态: ANNOTATED/NO_ANNOTATION/NOT_APPLICABLE/IN_PROGRESS",
    )
    file_version = Column(BigInteger, nullable=True, comment="标注时的文件版本号")
    created_at = Column(
        TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间"
    )
    updated_at = Column(
        TIMESTAMP,
        server_default=func.current_timestamp(),
        onupdate=func.current_timestamp(),
        comment="更新时间",
    )

    def __repr__(self):
        return f"<AnnotationResult(id={self.id}, project_id={self.project_id}, file_id={self.file_id})>"


class AutoAnnotationTask(Base):
    """自动标注任务模型，对应表 t_dm_auto_annotation_tasks"""

    __tablename__ = "t_dm_auto_annotation_tasks"

    id = Column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID"
    )
    name = Column(String(255), nullable=False, comment="任务名称")
    dataset_id = Column(String(36), nullable=False, comment="数据集ID")
    dataset_name = Column(
        String(255), nullable=True, comment="数据集名称（冗余字段，方便查询）"
    )
    config = Column(JSON, nullable=False, comment="任务配置（模型规模、置信度等）")
    file_ids = Column(
        JSON, nullable=True, comment="要处理的文件ID列表，为空则处理数据集所有图像"
    )
    status = Column(
        String(50),
        nullable=False,
        default="pending",
        comment="任务状态: pending/running/completed/failed",
    )
    progress = Column(Integer, default=0, comment="任务进度 0-100")
    total_images = Column(Integer, default=0, comment="总图片数")
    processed_images = Column(Integer, default=0, comment="已处理图片数")
    detected_objects = Column(Integer, default=0, comment="检测到的对象总数")
    output_path = Column(String(500), nullable=True, comment="输出路径")
    error_message = Column(Text, nullable=True, comment="错误信息")
    created_at = Column(
        TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间"
    )
    updated_at = Column(
        TIMESTAMP,
        server_default=func.current_timestamp(),
        onupdate=func.current_timestamp(),
        comment="更新时间",
    )
    completed_at = Column(TIMESTAMP, nullable=True, comment="完成时间")
    deleted_at = Column(TIMESTAMP, nullable=True, comment="删除时间（软删除）")

    def __repr__(self) -> str:  # pragma: no cover - repr 简单返回
        return f"<AutoAnnotationTask(id={self.id}, name={self.name}, status={self.status})>"

    @property
    def is_deleted(self) -> bool:
        """检查是否已被软删除"""
        return self.deleted_at is not None