# -*- coding: utf-8 -*-
# 
# @author: lyg
# @date: 2025-5-12
# @version: 1
# @description: 文档数据库助手，mysql数据库

import json
from threading import RLock

from knowledgebase.db.doc_db_models import init_doc_db, TDoc, TEntity, TParagraph, TParagraphLink, TParagraphRefLink, \
    TParagraphEntityLink

from knowledgebase.doc.models import ParagraphInfo, DocInfo


class DocDbHelper:
    """
    文档数据库助手
    """
    lock = RLock()

    def __init__(self):
        self.session = None

    def set_project_path(self, project_path):
        self.session = init_doc_db(project_path)

    def add_doc(self, doc_info: DocInfo) -> int:
        """
        添加文档
        """
        _doc = TDoc(
            file=doc_info.file,
            file_name=doc_info.file_name,
            is_del=0,
        )
        self.session.add(_doc)
        self.session.commit()
        doc_info.id = _doc.id
        return _doc.id

    def add_paragraph(self, doc_id: int, parent_id: int, paragraph_info: ParagraphInfo) -> TParagraph:
        """
        添加段落
        :param doc_id: 文档id
        :param parent_id: 父段落id
        :param paragraph_info: 段落信息
        """
        _paragraph = TParagraph(
            doc_id=doc_id,
            text=paragraph_info.text,
            title_level=paragraph_info.title_level,
            title_num=paragraph_info.title_num,
            num=paragraph_info.num,
            num_level=paragraph_info.num_level,
            parent_id=parent_id,
            is_del=0,
        )
        self.session.add(_paragraph)
        self.session.commit()
        if parent_id is not None:
            paragraph_link = TParagraphLink(parent_id=parent_id, child_id=_paragraph.id)
            self.add_paragraph_link(paragraph_link)
        if paragraph_info.entities:
            for entity in paragraph_info.entities:
                self.add_paragraph_entity_link(TParagraphEntityLink(paragraph_id=_paragraph.id, entity_id=entity.id))
        if paragraph_info.children:
            for child in paragraph_info.children:
                self.add_paragraph(doc_id, _paragraph.id, child)
        paragraph_info.id = _paragraph.id
        return _paragraph

    def add_paragraph_link(self, paragraph_link):
        """
        添加段落关系
        :param paragraph_link: 段落关系
        """
        self.session.add(paragraph_link)
        self.session.commit()
        return paragraph_link.id

    def add_paragraph_ref_link(self, paren_id: int, child_id: int) -> int:
        """
        添加段落引用关系
        :param paren_id: 引用段落
        :param child_id: 被引用段落
        :return:
        """
        link = TParagraphRefLink(parent_id=paren_id, child_id=child_id, is_del=0)
        self.session.add(link)
        self.session.commit()
        return link.id

    def add_paragraph_entity_link(self, paragraph_entity_link):
        """
        添加段落实体关系
        :param paragraph_entity_link: 段落实体关系
        """
        self.session.add(paragraph_entity_link)
        self.session.commit()
        return paragraph_entity_link.id

    def get_entity(self, entity):
        with self.lock:
            ret = self.session.query(TEntity).where(
                TEntity.name == entity.name and TEntity.type == entity.type and TEntity.doc_type == entity.doc_type).first()
            if ret:
                return ret

    def add_entity(self, entity):
        """
        添加实体
        :param entity: 实体
        """
        self.session.add(entity)
        self.session.commit()
        return entity.id

    def get_all_entities(self) -> list[TEntity]:
        with self.lock:
            return self.session.query(TEntity).all()

    def get_docs(self) -> list[TDoc]:
        with self.lock:
            return self.session.query(TDoc).all()


    def get_texts_with_entities(self, entity_names: list[str]):
        """
        根据实体词获取文本内容列表
        :param entity_names: list[str] - 实体词
        :return: list[str] - 文本列表
        """
        with self.lock:
            if not entity_names:
                return ""
            _entities = self.session.query(TEntity).where(TEntity.name.in_(entity_names)).all()
            _entitie_ids = [entity.id for entity in _entities]
            links = self.session.query(TParagraphEntityLink).where(
                TParagraphEntityLink.entity_id.in_(_entitie_ids)).all()
            _paragraphs:[TParagraph] = [link.paragraph for link in links]
            ref_paragraphs = []
            for p in _paragraphs:
                ref_paragraphs.extend([x.child for x in p.ref_links])
            _paragraphs.extend(ref_paragraphs)
            id_map = {}
            result = []
            for p in _paragraphs:
                if p.id in id_map:
                    continue
                else:
                    id_map[p.id] = p
                    result.append(p)
            return [p.text for p in result]


    def get_text_with_entities(self, entity_names: list[str]) -> str:
        """
        根据实体词获取文本内容
        :param entity_names: list[str] - 实体词
        :return: str - 文本
        """
        texts = self.get_texts_with_entities(entity_names)
        return '\n'.join(texts)

    def get_entities_by_names(self, names: list[str]):
        _entities = self.session.query(TEntity).where(TEntity.name.in_(names)).all()
        return _entities

    def get_paragraph_full_text(self, p: TParagraph):
        result = p.text if p.title_level == 0 else p.title_num + ' ' + p.text
        return result + '\n' + '\n'.join([self.get_paragraph_full_text(p) for p in p.children])

    def get_entities_by_doc_type(self, doc_type):
        with self.lock:
            _entities = self.session.query(TEntity).where(TEntity.doc_type == doc_type).all()
        return _entities

    def get_entities_by_type(self, ty: str)->list[TEntity]:
        with self.lock:
            _entities = self.session.query(TEntity).where(TEntity.type == ty).all()
        return _entities

    def commit(self):
        self.session.commit()


doc_dbh = DocDbHelper()