from telegram import Update
from telegram.ext import ContextTypes

from bot.models.database import Session
from bot.models.reminder import Reminder
from bot.models.user import User
from bot.utils.keyboards import list_item_keyboard


async def list_reminders(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    user = update.effective_user
    session = Session()
    try:
        user_obj = User.get_or_create(session, user.id, user.username)
        reminders = Reminder.get_user_reminders(session, user_obj.id)

        if not reminders:
            await update.message.reply_text(
                "你还没有创建任何提醒。\n发送 /new 创建第一个提醒吧！"
            )
            return

        await update.message.reply_text(f"📋 *你的提醒列表*（共 {len(reminders)} 个）", parse_mode="Markdown")

        for reminder in reminders:
            status = "✅ 活跃" if reminder.is_active else "⏸ 已暂停"
            text = (
                f"*{_escape(reminder.title)}*\n"
                f"类型：{reminder.type_display()}\n"
                f"时间：{reminder.schedule_summary()}\n"
                f"跳过节假日：{'是' if reminder.skip_holidays else '否'}\n"
                f"状态：{status}"
            )
            if reminder.description:
                text += f"\n描述：{_escape(reminder.description)}"

            await update.message.reply_text(
                text,
                parse_mode="Markdown",
                reply_markup=list_item_keyboard(reminder.id, reminder.is_active),
            )
    finally:
        Session.remove()


def _escape(text: str) -> str:
    for ch in ["_", "*", "`", "["]:
        text = text.replace(ch, f"\\{ch}")
    return text