LAS/core/alarm_plan_helper.py

from datetime import datetime, timedelta


def get_query_time_range(param: dict, now: datetime = None):
    """
    根据 param 的 start_time / end_time 生成查询区间，返回格式化后的字符串

    规则：
    - 如果 start_time < end_time，则区间为 [昨天.start_time, 昨天.end_time]
    - 否则，区间为 [昨天.end_time, 今天.start_time]
    """

    now = now or datetime.now()

    # 解析时间
    start_time = datetime.strptime(param["start_time"], "%H:%M").time()
    end_time = datetime.strptime(param["end_time"], "%H:%M").time()

    today = now.date()
    yesterday = today - timedelta(days=1)

    if start_time < end_time:
        # 区间在同一天 (昨天)
        start_dt = datetime.combine(yesterday, start_time)
        end_dt = datetime.combine(yesterday, end_time)
    else:
        # 跨天
        start_dt = datetime.combine(yesterday, end_time)
        end_dt = datetime.combine(today, start_time)

    # 返回字符串
    return start_dt.strftime("%Y-%m-%d %H:%M:%S"), end_dt.strftime("%Y-%m-%d %H:%M:%S")


def normalize_param_time(param: dict, now: datetime = None):
    """
    把 param['start_time'], param['end_time'] (HH:MM) 转换成昨天的完整日期时间字符串
    格式：YYYY-MM-DD HH:MM:SS
    """
    now = now or datetime.now()
    yesterday = (now - timedelta(days=1)).date()

    def to_datetime_str(hhmm: str) -> str:
        t = datetime.strptime(hhmm, "%H:%M").time()
        dt = datetime.combine(yesterday, t)
        return dt.strftime("%Y-%m-%d %H:%M:%S")

    return {
        "start_time": to_datetime_str(param["start_time"]),
        "end_time": to_datetime_str(param["end_time"]),
    }


def is_point_in_rect(x, y, rect):
    """
    判断点 (x, y) 是否在 rect 定义的矩形内
    rect 格式: [left, top, w, h]
    """
    if not rect or len(rect) != 4:
        return False

    left, top, w, h = rect
    right = left + w
    bottom = top + h

    return left <= x <= right and top <= y <= bottom