"""PPT 生成会话模型。"""
from sqlalchemy import Column, String, Text, Integer, TIMESTAMP, func
from insurance.db.compat import db


class PptSession(db.Model):
    """PPT 生成会话表。"""
    __tablename__ = "insurance_ppt_sessions"

    id = Column(String(36), primary_key=True, comment="UUID")
    user_id = Column(String(64), nullable=False, comment="用户 ID")
    status = Column(String(20), default="created", nullable=False,
                    comment="状态: created/parsing/parsed/generating/done/error")
    files_json = Column(Text, nullable=True, comment="上传文件列表 JSON")
    extractions_json = Column(Text, nullable=True, comment="提取结果 JSON")
    parse_progress = Column(Integer, default=0, nullable=False, comment="解析进度 0-100")
    parse_message = Column(Text, nullable=True, comment="解析进度说明")
    parse_error = Column(Text, nullable=True, comment="解析任务错误")
    parse_started_at = Column(TIMESTAMP, nullable=True, comment="解析开始时间")
    parse_finished_at = Column(TIMESTAMP, nullable=True, comment="解析完成时间")
    chat_history_json = Column(Text, nullable=True, comment="对话历史 JSON")
    ppt_path = Column(String(500), nullable=True, comment="生成的 PPT 路径")
    markdown_path = Column(String(500), nullable=True, comment="Markdown 路径")
    preview_paths_json = Column(Text, nullable=True, comment="预览图路径 JSON")
    preview_pdf_path = Column(String(500), nullable=True, comment="预览 PDF 路径")
    slide_count = Column(Integer, nullable=True, comment="幻灯片数量")
    # 工作区字段（migrate_022）
    title = Column(String(200), default="", comment="用户可识别名称")
    workflow_step = Column(String(20), default="upload", comment="当前业务步骤")
    draft_options_json = Column(Text, nullable=True, comment="模板、公司、脱敏等草稿设置")
    draft_revision = Column(Integer, default=1, comment="当前草稿版本")
    generated_revision = Column(Integer, default=0, comment="最新成品版本")
    latest_task_id = Column(String(36), nullable=True, comment="最近一次任务 ID")
    latest_output_path = Column(String(500), nullable=True, comment="最新成品路径")
    archived_at = Column(TIMESTAMP, nullable=True, comment="归档时间")
    # 预览与质量检查（migrate_025）
    slides_json_path = Column(String(500), nullable=True, comment="幻灯片结构 JSON 路径")
    quality_report_json = Column(Text, nullable=True, comment="质量检查报告 JSON")
    preview_status = Column(String(20), default="none", nullable=False,
                            comment="预览状态: none/generating/ready/failed")
    deck_contract_path = Column(String(500), nullable=True, comment="DeckContract 快照路径")
    versions_json = Column(Text, nullable=True, comment="版本历史 JSON 数组")
    created_at = Column(TIMESTAMP, server_default=func.now())
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())

    def to_dict(self):
        import json
        return {
            "id": self.id,
            "user_id": self.user_id,
            "status": self.status,
            "files": json.loads(self.files_json) if self.files_json else [],
            "extractions": json.loads(self.extractions_json) if self.extractions_json else [],
            "parse_progress": self.parse_progress or 0,
            "parse_message": self.parse_message,
            "parse_error": self.parse_error,
            "parse_started_at": str(self.parse_started_at) if self.parse_started_at else None,
            "parse_finished_at": str(self.parse_finished_at) if self.parse_finished_at else None,
            "chat_history": json.loads(self.chat_history_json) if self.chat_history_json else [],
            "ppt_path": self.ppt_path,
            "markdown_path": self.markdown_path,
            "preview_paths": json.loads(self.preview_paths_json) if self.preview_paths_json else [],
            "preview_pdf_path": self.preview_pdf_path,
            "slide_count": self.slide_count,
            "title": self.title or "",
            "workflow_step": self.workflow_step or "upload",
            "draft_options": json.loads(self.draft_options_json) if self.draft_options_json else None,
            "draft_revision": self.draft_revision or 1,
            "generated_revision": self.generated_revision or 0,
            "latest_task_id": self.latest_task_id,
            "latest_output_path": self.latest_output_path,
            "archived_at": str(self.archived_at) if self.archived_at else None,
            "slides_json_path": self.slides_json_path,
            "quality_report": json.loads(self.quality_report_json) if self.quality_report_json else None,
            "preview_status": self.preview_status or "none",
            "deck_contract_path": self.deck_contract_path,
            "versions": json.loads(self.versions_json) if self.versions_json else [],
            "created_at": str(self.created_at) if self.created_at else None,
            "updated_at": str(self.updated_at) if self.updated_at else None,
        }