import asyncio
import uuid
from typing import List

from applications.utils.mysql import ContentChunks, Contents
from applications.utils.chunks import TopicAwareChunker, LLMClassifier
from applications.config import DEFAULT_MODEL, Chunk, ChunkerConfig


class ChunkTask(TopicAwareChunker):
    def __init__(self, mysql_pool, vector_pool, cfg: ChunkerConfig):
        super().__init__(cfg)
        self.content_chunk_processor = None
        self.contents_processor = None
        self.mysql_pool = mysql_pool
        self.vector_pool = vector_pool
        self.classifier = LLMClassifier()

    def init_processer(self):
        self.contents_processor = Contents(self.mysql_pool)
        self.content_chunk_processor = ContentChunks(self.mysql_pool)

    async def process_content(self, doc_id, text) -> List[Chunk]:
        flag = await self.contents_processor.insert_content(doc_id, text)
        if not flag:
            return []
        else:
            raw_chunks = await self.chunk(text)
            if not raw_chunks:
                await self.contents_processor.update_content_status(
                    doc_id=doc_id, ori_status=self.INIT_STATUS, new_status=self.FAILED_STATUS
                )
                return []

            affected_rows = await self.contents_processor.update_content_status(
                doc_id=doc_id, ori_status=self.INIT_STATUS, new_status=self.PROCESSING_STATUS
            )
            print(affected_rows)
            return raw_chunks

    async def process_each_chunk(self, chunk: Chunk):
        # insert
        flag = await self.content_chunk_processor.insert_chunk(chunk)
        if not flag:
            return

        acquire_lock = await self.content_chunk_processor.update_chunk_status(
            doc_id=chunk.doc_id, chunk_id=chunk.chunk_id, ori_status=self.INIT_STATUS, new_status=self.PROCESSING_STATUS
        )
        if not acquire_lock:
            return

        completion = await self.classifier.classify_chunk(chunk)
        if not completion:
            await self.content_chunk_processor.update_chunk_status(
                doc_id=chunk.doc_id, chunk_id=chunk.chunk_id, ori_status=self.PROCESSING_STATUS, new_status=self.FAILED_STATUS
            )

        update_flag = await self.content_chunk_processor.set_chunk_result(
            chunk=completion, new_status=self.FINISHED_STATUS, ori_status=self.PROCESSING_STATUS
        )
        if not update_flag:
            await self.content_chunk_processor.update_chunk_status(
                doc_id=chunk.doc_id, chunk_id=chunk.chunk_id, ori_status=self.PROCESSING_STATUS, new_status=self.FAILED_STATUS
            )


    async def deal(self, data):
        text = data.get("text")
        if not text:
            return None

        self.init_processer()
        doc_id = f"doc-{uuid.uuid4()}"

        async def _process():
            chunks = await self.process_content(doc_id, text)
            if not chunks:
                return

            # 开始分batch
            async with asyncio.TaskGroup() as tg:
                for chunk in chunks:
                    tg.create_task(self.process_each_chunk(chunk))

            await self.contents_processor.update_content_status(
                doc_id=doc_id, ori_status=self.PROCESSING_STATUS, new_status=self.FINISHED_STATUS
            )

        await _process()
        # asyncio.create_task(_process())
        return doc_id