import json

from tqdm import tqdm
from typing import Dict, List

from app.core.database import DatabaseManager
from app.core.observability import LogService

from ._const import DecodeArticleConst
from ._mapper import (
    AdPlatformArticlesDecodeTaskMapper,
    InnerArticlesDecodeTaskMapper,
)
from ._utils import AdPlatformArticlesDecodeUtils, InnerArticlesDecodeUtils


class CreateAdPlatformArticlesDecodeTask(DecodeArticleConst):
    def __init__(self, pool: DatabaseManager, log_service: LogService):
        self.pool = pool
        self.log_service = log_service
        self.mapper = AdPlatformArticlesDecodeTaskMapper(self.pool)
        self.tool = AdPlatformArticlesDecodeUtils()

    async def _acquire_articles(self) -> List[Dict]:
        """获取待解构文章，并加锁（decode_status INIT → PROCESSING）"""
        article_list = await self.mapper.fetch_decode_articles()
        locked = []
        for article in article_list:
            article_id = article["id"]
            acquired = await self.mapper.update_article_decode_status(
                article_id, self.TaskStatus.INIT, self.TaskStatus.PROCESSING
            )
            if acquired:
                locked.append(article)
            else:
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "task": "create_decode_task_v2",
                        "status": "skip",
                        "message": "acquire lock failed",
                    }
                )
        return locked

    async def _submit_and_record(self, articles: List[Dict]):
        if not articles:
            return

        posts = self.tool.prepare_posts(articles)
        submit_results = await self.tool.submit_decode_batch(posts)
        posts_by_wx = {p["channelContentId"]: p for p in posts}

        for article in articles:
            wx_sn = article["wx_sn"]
            article_id = article["id"]
            result = submit_results.get(wx_sn)

            if not result:
                await self.mapper.update_article_decode_status(
                    article_id, self.TaskStatus.PROCESSING, self.TaskStatus.INIT
                )
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "wx_sn": wx_sn,
                        "task": "create_decode_task_v2",
                        "status": "fail",
                        "message": "no response for channel_content_id, rolled back to INIT",
                    }
                )
                continue

            status = result.get("status")
            if status == self.SubmitStatus.FAILED:
                await self.mapper.update_article_decode_status(
                    article_id, self.TaskStatus.PROCESSING, self.TaskStatus.INIT
                )
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "wx_sn": wx_sn,
                        "task": "create_decode_task_v2",
                        "status": "fail",
                        "data": result,
                    }
                )
                continue

            if status == self.SubmitStatus.SUCCESS:
                # 已有解构结果，直接查询结果并落库
                query_results = await self.tool.query_decode_results_batch([wx_sn])
                result_data = query_results.get(wx_sn)
                if result_data and result_data.get("status") == self.QueryStatus.SUCCESS:
                    data_content = result_data.get("dataContent") or "{}"
                    html = result_data.get("html")
                    await self.mapper.insert_decode_task(
                        channel_content_id=wx_sn,
                        content_id=article_id,
                        source=self.SourceType.AD_PLATFORM,
                        payload=json.dumps(
                            posts_by_wx.get(wx_sn, {}), ensure_ascii=False
                        ),
                        remark="提交时已有解构结果，直接落库",
                    )
                    await self.mapper.set_decode_result(
                        channel_content_id=wx_sn,
                        result=json.dumps(
                            {"dataContent": data_content, "html": html},
                            ensure_ascii=False,
                        ),
                        remark="提交时已返回 SUCCESS，结果已落库",
                    )
                    await self.mapper.update_article_decode_status(
                        article_id, self.TaskStatus.PROCESSING, self.TaskStatus.SUCCESS
                    )
                    await self.log_service.log(
                        contents={
                            "article_id": article_id,
                            "wx_sn": wx_sn,
                            "task": "create_decode_task_v2",
                            "status": "success",
                            "message": "decode result already available on submit",
                        }
                    )
                else:
                    # 提交返回 SUCCESS 但查询不到结果，插入记录等待轮询
                    await self.mapper.insert_decode_task(
                        channel_content_id=wx_sn,
                        content_id=article_id,
                        source=self.SourceType.AD_PLATFORM,
                        payload=json.dumps(
                            posts_by_wx.get(wx_sn, {}), ensure_ascii=False
                        ),
                        remark="提交返回SUCCESS，查询未果，等待轮询",
                    )
                    await self.mapper.update_article_decode_status(
                        article_id,
                        self.TaskStatus.PROCESSING,
                        self.TaskStatus.SUCCESS,
                    )
                    await self.log_service.log(
                        contents={
                            "article_id": article_id,
                            "wx_sn": wx_sn,
                            "task": "create_decode_task_v2",
                            "status": "pending",
                            "message": "submit SUCCESS but query not ready, inserted for polling",
                        }
                    )
            elif status == self.SubmitStatus.PENDING:
                await self.mapper.insert_decode_task(
                    channel_content_id=wx_sn,
                    content_id=article_id,
                    source=self.SourceType.AD_PLATFORM,
                    payload=json.dumps(
                        posts_by_wx.get(wx_sn, {}), ensure_ascii=False
                    ),
                    remark="任务已提交，等待轮询",
                )
                await self.mapper.update_article_decode_status(
                    article_id,
                    self.TaskStatus.PROCESSING,
                    self.TaskStatus.SUCCESS,
                )
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "wx_sn": wx_sn,
                        "task": "create_decode_task_v2",
                        "status": "pending",
                        "message": "task submitted, waiting for polling",
                    }
                )
            else:
                await self.mapper.update_article_decode_status(
                    article_id, self.TaskStatus.PROCESSING, self.TaskStatus.INIT
                )
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "wx_sn": wx_sn,
                        "task": "create_decode_task_v2",
                        "status": "fail",
                        "message": f"unexpected submit status: {status}, rolled back to INIT",
                        "data": result,
                    }
                )

    async def deal(self):
        article_list = await self._acquire_articles()
        if not article_list:
            await self.log_service.log(
                contents={
                    "task": "create_decode_task_v2",
                    "message": "No more articles to decode",
                }
            )
            return

        await self._submit_and_record(article_list)
        await self.log_service.log(
            contents={
                "task": "create_decode_task_v2",
                "message": f"Processed {len(article_list)} articles",
            }
        )


class CreateInnerArticlesDecodeTask(DecodeArticleConst):
    _TEST_MODE = False

    def __init__(self, pool: DatabaseManager, log_service: LogService):
        self.pool = pool
        self.log_service = log_service
        self.mapper = InnerArticlesDecodeTaskMapper(self.pool)
        self.tool = InnerArticlesDecodeUtils()

    async def _acquire_articles(self) -> List[Dict]:
        """获取待解构文章，并加锁（status INIT → PROCESSING）"""
        article_list = await self.mapper.fetch_inner_articles()
        if self._TEST_MODE:
            return article_list

        locked = []
        for article in article_list:
            article_id = article["id"]
            acquired = await self.mapper.update_inner_article_status(
                article_id, self.TaskStatus.INIT, self.TaskStatus.PROCESSING
            )
            if acquired:
                locked.append(article)
            else:
                await self.log_service.log(
                    contents={
                        "article_id": article_id,
                        "task": "create_inner_decode_task",
                        "status": "skip",
                        "message": "acquire lock failed",
                    }
                )
        return locked

    async def _handle_result(
        self,
        article: Dict,
        channel_content_id: str,
        result: Dict,
        posts_by_cid: Dict,
        config_id: int,
    ):
        wx_sn = article["wx_sn"]

        if not result:
            await self.log_service.log(
                contents={
                    "wx_sn": wx_sn,
                    "task": "create_inner_decode_task",
                    "status": "fail",
                    "message": "no response for channel_content_id",
                }
            )
            return

        status = result.get("status")
        if status == self.SubmitStatus.FAILED:
            await self.log_service.log(
                contents={
                    "wx_sn": wx_sn,
                    "task": "create_inner_decode_task",
                    "status": "fail",
                    "data": result,
                }
            )
        elif status == self.SubmitStatus.PENDING:
            await self.mapper.insert_decode_task(
                channel_content_id=channel_content_id,
                content_id=str(article.get("source_id", "")),
                source=self.SourceType.INNER,
                payload=json.dumps(
                    posts_by_cid.get(channel_content_id, {}), ensure_ascii=False
                ),
                remark="内部文章解构任务已提交",
            )
        elif status == self.SubmitStatus.SUCCESS:
            query_results = await self.tool.query_decode_results_batch(
                [channel_content_id], config_id=config_id
            )
            result_data = query_results.get(channel_content_id)
            data_content = result_data.get("dataContent") if result_data else None
            if data_content:
                await self.mapper.insert_decode_task(
                    channel_content_id=channel_content_id,
                    content_id=str(article.get("source_id", "")),
                    source=self.SourceType.INNER,
                    payload=json.dumps(
                        posts_by_cid.get(channel_content_id, {}), ensure_ascii=False
                    ),
                    remark="内部文章解构结果已获取",
                )
                await self.mapper.set_decode_result(
                    channel_content_id=channel_content_id,
                    result=json.dumps(
                        {"dataContent": data_content}, ensure_ascii=False
                    ),
                )
            else:
                await self.mapper.insert_decode_task(
                    channel_content_id=channel_content_id,
                    content_id=str(article.get("source_id", "")),
                    source=self.SourceType.INNER,
                    payload=json.dumps(result, ensure_ascii=False),
                    remark="提交返回SUCCESS，查询未果，等待轮询",
                )
        else:
            await self.log_service.log(
                contents={
                    "wx_sn": wx_sn,
                    "task": "create_inner_decode_task",
                    "status": "fail",
                    "message": f"unexpected submit status: {status}",
                    "data": result,
                }
            )

    async def _submit_and_record(self, articles: List[Dict]):
        if not articles:
            return

        # 过滤已有任务记录的文章（测试模式跳过）
        if not self._TEST_MODE:
            all_wx_sns = [a["wx_sn"] for a in articles]
            existing = await self.mapper.fetch_existing_channel_content_ids(all_wx_sns)
            new_articles = [a for a in articles if a["wx_sn"] not in existing]
            skipped = len(articles) - len(new_articles)
            if skipped > 0:
                await self.log_service.log(
                    contents={
                        "task": "create_inner_decode_task",
                        "message": f"Skipped {skipped} already-submitted articles",
                    }
                )

            for article in articles:
                if article not in new_articles:
                    await self.mapper.update_inner_article_status(
                        article["id"], self.TaskStatus.PROCESSING, self.TaskStatus.SUCCESS
                    )
        else:
            new_articles = articles

        if not new_articles:
            return

        # 批量获取 produce 信息
        produce_info_map: Dict[str, list] = {}
        for article in new_articles:
            source_id = article["source_id"]
            produce_info = await self.mapper.fetch_inner_articles_produce_detail(
                source_id
            )
            produce_info_map[article["wx_sn"]] = produce_info

        posts = self.tool.prepare_posts(new_articles, produce_info_map)

        submit_results = await self.tool.submit_decode_batch(
            posts, config_id=self.CONFIG_ID, skip_completed=True
        )
        posts_by_cid = {p["channelContentId"]: p for p in posts}

        for article in tqdm(new_articles):
            wx_sn = article["wx_sn"]
            article_id = article["id"]

            result = submit_results.get(wx_sn)
            await self._handle_result(
                article, wx_sn, result, posts_by_cid, self.CONFIG_ID
            )

            if not self._TEST_MODE:
                ok = result and result.get("status") != self.SubmitStatus.FAILED
                if ok:
                    await self.mapper.update_inner_article_status(
                        article_id, self.TaskStatus.PROCESSING, self.TaskStatus.SUCCESS
                    )
                else:
                    # 提交失败或无响应，回锁为 INIT 等待下次重试
                    await self.mapper.update_inner_article_status(
                        article_id, self.TaskStatus.PROCESSING, self.TaskStatus.INIT
                    )

    async def deal(self):
        article_list = await self._acquire_articles()
        if not article_list:
            await self.log_service.log(
                contents={
                    "task": "create_inner_decode_task",
                    "message": "No more articles to decode",
                }
            )
            return

        await self._submit_and_record(article_list)
        await self.log_service.log(
            contents={
                "task": "create_inner_decode_task",
                "message": f"Processed {len(article_list)} articles",
            }
        )


__all__ = ["CreateAdPlatformArticlesDecodeTask", "CreateInnerArticlesDecodeTask"]