import logging

import httpx

from .config import settings
from .http_client import httpx_client_kwargs

logger = logging.getLogger(__name__)


def _format_period_label(period_start: str, period_end: str) -> str:
    start = period_start[:16].replace("T", " ")
    end = period_end[:16].replace("T", " ")
    return f"{start} ~ {end}"


def build_markdown(snapshot: dict) -> str:
    items = snapshot.get("items", [])
    period_label = _format_period_label(
        snapshot.get("period_start", ""),
        snapshot.get("period_end", ""),
    )
    lines = [
        "## 币安 U本位合约 成交额 Top30",
        f"> 统计周期（北京时间 8:00 切日）",
        f"> **{period_label}**",
        "",
        "| 排名 | 合约 | 成交额(USDT) | 涨跌幅 | 标记 |",
        "| --- | --- | --- | --- | --- |",
    ]
    for row in items:
        tags = []
        if row.get("is_high_volume"):
            tags.append("千万+")
        if row.get("is_high_change"):
            tags.append("涨跌5%+")
        tag_str = " ".join(tags) if tags else "-"
        vol = row.get("quote_volume_fmt") or f"{row.get('quote_volume', 0):.0f}"
        pct = row.get("price_change_pct_fmt") or f"{row.get('price_change_pct', 0):+.2f}%"
        lines.append(
            f"| {row['rank']} | {row['symbol']} | {vol} | {pct} | {tag_str} |"
        )
    lines.append("")
    lines.append("> 标记说明：千万+ = 成交额≥1000万 USDT；涨跌5%+ = |涨跌幅|≥5%")
    return "\n".join(lines)


async def send_wecom_markdown(content: str) -> tuple[bool, str]:
    url = settings.wecom_webhook_url.strip()
    if not url:
        return False, "WECOM_WEBHOOK_URL 未配置"
    payload = {"msgtype": "markdown", "markdown": {"content": content}}
    last_err = ""
    for attempt in range(3):
        try:
            async with httpx.AsyncClient(
                timeout=15.0, **httpx_client_kwargs("wecom")
            ) as client:
                resp = await client.post(url, json=payload)
                data = resp.json()
                if data.get("errcode") == 0:
                    return True, "ok"
                last_err = str(data)
        except Exception as e:
            last_err = str(e)
            logger.warning("WeCom push attempt %d failed: %s", attempt + 1, e)
    return False, last_err