"""
数据抓取模块。
"""
import asyncio
from typing import Optional, Union

from sqlalchemy import select, desc

import dock
from dock.govc import govc_scrape_dept_feedback, govc_scrape_return_visit, govc_scrape_finish_info, govc_scrape_order
from models.govc_task import GovcTask
from paste.core.logging import echo_log
from paste.web import requests


async def fetch_govc_task(fetch_size: int = 60, task_id: Optional[Union[str, int]] = None):
    """
    抓取待办数据及其明细数据。

    :param fetch_size: 读取多少任务进行明细抓取
    :param task_id: 可选的指定的工单id
    """
    echo_log(f"开始抓取待办数据...")
    task_request = await govc_scrape_order.get_task_request(
        fetch_size=fetch_size
    )
    request_queue = asyncio.Queue()
    await request_queue.put(task_request)
    await requests.async_concurrency(
        request_queue, retry=dock.MAX_RETRY_COUNT,
        after_request=govc_scrape_order.after_task_request
    )
    echo_log(f"待办数据抓取完成...")

    # 读取任务数据，以便能对最新数据抓取详细数据
    query = select(
        GovcTask.id, GovcTask.pvi_guid, GovcTask.c_guid
    ).order_by(
        desc(GovcTask.id)
    )
    if task_id:
        if isinstance(task_id, list):
            query = query.where(GovcTask.id.in_(task_id))
            echo_log(f"开始抓取待办列表：{task_id} 的详细数据...")
        else:
            query = query.where(GovcTask.id == task_id)
            echo_log(f"开始抓取待办：{task_id} 的详细数据...")
    else:
        echo_log(f"开始抓取前 {fetch_size} 条待办的详细数据...")
        query = query.limit(fetch_size)
    task_df = await GovcTask.query_as_df(query)

    # 构建请求队列
    feedback_queue = asyncio.Queue()
    result_info_queue = asyncio.Queue()
    finish_info_queue = asyncio.Queue()
    # 向队列中填充请求对象
    echo_log(f"正在准备请求队列...")
    for _h, _row in task_df.iterrows():
        _feedback_request = await govc_scrape_dept_feedback.get_feedback_request(_row.get(GovcTask.pvi_guid.key),
                                                                                 _row.get(GovcTask.c_guid.key))
        setattr(_feedback_request, 'task_id', _row.get(GovcTask.id.key))
        await feedback_queue.put(_feedback_request)
        _result_info_request = await govc_scrape_return_visit.get_return_visit_request(_row.get(GovcTask.pvi_guid.key),
                                                                                     _row.get(GovcTask.c_guid.key))
        setattr(_result_info_request, 'task_id', _row.get(GovcTask.id.key))
        await result_info_queue.put(_result_info_request)
        _finish_info_request = await govc_scrape_finish_info.get_finish_info_request(_row.get(GovcTask.pvi_guid.key),
                                                                                     _row.get(GovcTask.c_guid.key))
        setattr(_finish_info_request, 'task_id', _row.get(GovcTask.id.key))
        await finish_info_queue.put(_finish_info_request)

    echo_log(f"抓取待办详细数据...")
    tasks = [
        requests.async_concurrency(
            feedback_queue, con_count=dock.CONCURRENCY_COUNT, retry=dock.MAX_RETRY_COUNT,
            after_request=govc_scrape_dept_feedback.after_feedback_request
        ),
        requests.async_concurrency(
            result_info_queue, con_count=dock.CONCURRENCY_COUNT, retry=dock.MAX_RETRY_COUNT,
            after_request=govc_scrape_result_info.after_result_info_request
        ),
        requests.async_concurrency(
            finish_info_queue, con_count=dock.CONCURRENCY_COUNT, retry=dock.MAX_RETRY_COUNT,
            after_request=govc_scrape_finish_info.after_finish_info_request)
    ]
    await asyncio.gather(*tasks)


if __name__ == "__main__":
    from paste.core import aio_pool

    _runner = aio_pool.get_aio_runner()
    _runner(fetch_govc_task(10))