import requests
from src.config import TelegramConfig


def send_message(tg_cfg: TelegramConfig, text: str):
    url = f"https://api.telegram.org/bot{tg_cfg.bot_token}/sendMessage"
    payload = {
        "chat_id": tg_cfg.chat_id,
        "text": text,
        "parse_mode": "MarkdownV2",
    }
    resp = requests.post(url, json=payload, timeout=30)
    resp.raise_for_status()


_priority_icon = {"high": "🔴", "medium": "🟡", "low": "🟢"}


def format_summary(data: dict) -> str:
    priority = data.get("priority", "medium")
    icon = _priority_icon.get(priority, "⚪")

    lines = [
        f"*📧 新邮件摘要*",
        f"━━━━━━━━━━━━━━━━━━",
        f"*发件人:* {_escape(data.get('sender', '未知'))}",
        f"*主题:* {_escape(data.get('subject', '无主题'))}",
        f"*优先级:* {icon} {priority.upper()}",
        "",
        _escape(data.get("summary", "")),
        "",
    ]

    if data.get("action_required"):
        lines.append(f"*📌 需要处理:* 是")
        items = data.get("action_items", [])
        if items:
            lines.append(f"*待办事项:*")
            for item in items:
                lines.append(f"  • {_escape(item)}")
        lines.append("")

    points = data.get("key_points", [])
    if points:
        lines.append(f"*关键要点:*")
        for p in points:
            lines.append(f"  • {_escape(p)}")

    return "\n".join(lines)


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