# pylint: disable = missing-class-docstring
# pylint: disable = missing-function-docstring

"""
動画履歴の情報を取得し，JSON 形式で出力する．
"""

from __future__ import annotations

import json
import sys
from datetime import date, datetime
from typing import cast

from db.config import DB
from db.models import Video, VideoHistory

DB


def main (
        views_counts:   list[int],
        base_date:      date,
) -> None:
    kiriban_list: list[tuple[int, str, str]] = []

    latest_fetched_at = cast (date | None,
                              (VideoHistory
                               .where ('fetched_at', '<=', base_date)
                               .max ('fetched_at')))
    if latest_fetched_at is None:
        print ('[]')
        return

    for views_count in views_counts:
        targets = { vh.video.code for vh in (
                VideoHistory
                .where ('fetched_at', latest_fetched_at)
                .where ('views_count', '>=', views_count)
                .get ()) }

        for code in targets:
            if code in [kiriban[1] for kiriban in kiriban_list]:
                continue

            previous_views_count: int | None = (
                    VideoHistory
                    .where_has ('video', lambda q, code = code: q.where ('code', code))
                    .where ('fetched_at', '<', latest_fetched_at)
                    .max ('views_count'))
            if previous_views_count is None:
                previous_views_count = 0
            if previous_views_count >= views_count:
                continue

            kiriban_list.append ((views_count, code,
                                  (cast (Video, Video.where ('code', code).first ())
                                   .uploaded_at)))

    print (json.dumps (kiriban_list, default = str))


if __name__ == '__main__':
    main (list (map (int, sys.argv[2:])),
          datetime.strptime (sys.argv[1], '%Y-%m-%d').date ())