"""课表数据处理工具函数"""


def convert_tuple_schedule_to_dict(schedule: list[tuple]) -> list[dict]:
    """将元组格式的课表转换为字典格式。
    
    Args:
        schedule: list[tuple]，每个元组包含 (name, teacher, classroom, weeks, day, classes)
                 其中 weeks 可以是 list[int] 或 str（如 "1-17"）
        
    Returns:
        list[dict]: 标准格式的课程数据
    """
    result = []
    for course in schedule:
        # 确保元组长度足够，不足的补 None
        padded = list(course) + [None] * (6 - len(course))
        name, teacher, classroom, weeks, day, classes = padded[:6]

        # 处理 weeks：支持 list 或 str（如 "1-17", "1,3,5-10"）
        weeks_list = []
        if isinstance(weeks, list):
            weeks_list = weeks
        elif isinstance(weeks, str):
            weeks_list = parse_weeks_string(weeks)

        result.append({
            "name": name,
            "teacher": teacher,
            "classroom": classroom,
            "weeks": weeks_list,
            "day": day if isinstance(day, int) else 1,
            "classes": classes if isinstance(classes, list) else []
        })

    return result


def parse_weeks_string(weeks_str: str) -> list[int]:
    """将周数字符串解析为整数列表。
    
    支持格式：
        "1-17"      -> [1,2,3,...,17]
        "1,3,5"     -> [1,3,5]
        "1-5,7,9-11" -> [1,2,3,4,5,7,9,10,11]
        
    Args:
        weeks_str: 周数字符串
        
    Returns:
        list[int]: 周数列表
    """
    if not weeks_str or not isinstance(weeks_str, str):
        return []

    result = []
    parts = weeks_str.split(',')

    for part in parts:
        part = part.strip()
        if '-' in part:
            # 范围格式：1-17
            try:
                start, end = part.split('-', 1)
                start = int(start.strip())
                end = int(end.strip())
                result.extend(range(start, end + 1))
            except ValueError:
                continue
        else:
            # 单个数字
            try:
                result.append(int(part))
            except ValueError:
                continue

    # 去重并排序
    return sorted(set(result))


def format_weeks(weeks: list[int]) -> str:
    """格式化周数显示，如 [1,2,3,5,6,7] -> "1-3,5-7" """
    if not weeks:
        return ''

    weeks = sorted(set(weeks))
    ranges = []
    start = end = weeks[0]

    for w in weeks[1:]:
        if w == end + 1:
            end = w
        else:
            if start == end:
                ranges.append(str(start))
            else:
                ranges.append(f"{start}-{end}")
            start = end = w

    if start == end:
        ranges.append(str(start))
    else:
        ranges.append(f"{start}-{end}")

    return ','.join(ranges)


def get_period_time(period: int) -> str:
    """获取节次对应的时间（南邮标准时间）"""
    time_map = {
        1: '08:00',
        2: '08:50',
        3: '09:50',
        4: '10:40',
        5: '11:30',
        6: '13:45',
        7: '14:35',
        8: '15:35',
        9: '16:25',
        10: '18:30',
        11: '19:20',
        12: '20:10'
    }
    return time_map.get(period, '')