import { Card, CardContent } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";

async function getSignals() {
  const DB = "/home/fzq1228/polyscout/data/polyscout.db";
  const { execSync } = await import("child_process");
  const py = `import sqlite3,json; conn=sqlite3.connect('${DB}'); c=conn.cursor(); c.execute("""SELECT market_id, score, expected_edge, risk, created_at FROM signals ORDER BY score DESC LIMIT 50"""); print(json.dumps(c.fetchall(), ensure_ascii=False, default=str)); conn.close()`;
  try { return JSON.parse(execSync(`python3 -c ${JSON.stringify(py)}`, { encoding: "utf8" })); }
  catch { return []; }
}

const riskMap: Record<string, string> = { low: "低", medium: "中", high: "高" };
const riskVariant: Record<string, "default" | "secondary" | "destructive"> = {
  low: "default", medium: "secondary", high: "destructive"
};

export default async function SignalsPage() {
  const rows = await getSignals();
  return (
    <div className="space-y-6">
      <div>
        <h1 className="text-2xl font-bold">套利信号</h1>
        <p className="text-muted-foreground text-sm mt-1">评分 ≥ 75 自动推送 Discord，按评分排序</p>
      </div>
      <Card>
        <CardContent className="p-0">
          <div className="overflow-x-auto">
            <table className="w-full text-sm">
              <thead>
                <tr className="border-b border-border">
                  <th className="text-left px-4 py-3 text-muted-foreground font-medium text-xs uppercase tracking-wider">市场</th>
                  <th className="text-left px-4 py-3 text-muted-foreground font-medium text-xs uppercase tracking-wider">评分</th>
                  <th className="text-left px-4 py-3 text-muted-foreground font-medium text-xs uppercase tracking-wider">预期收益</th>
                  <th className="text-left px-4 py-3 text-muted-foreground font-medium text-xs uppercase tracking-wider">风险</th>
                  <th className="text-left px-4 py-3 text-muted-foreground font-medium text-xs uppercase tracking-wider hidden md:table-cell">时间</th>
                </tr>
              </thead>
              <tbody>
                {rows.length === 0 ? (
                  <tr><td colSpan={5} className="text-center py-8 text-muted-foreground">暂无信号</td></tr>
                ) : rows.map((r: any[], i: number) => (
                  <tr key={i} className="border-b border-border last:border-0 hover:bg-accent/50 transition-colors">
                    <td className="px-4 py-3 font-mono text-xs text-muted-foreground">{String(r[0]).slice(0, 16)}</td>
                    <td className="px-4 py-3">
                      <div className="flex items-center gap-2">
                        <span className="font-bold">{r[1]}</span>
                        <div className="w-16 h-1.5 rounded-full bg-border overflow-hidden">
                          <div className={`h-full rounded-full ${r[1] >= 75 ? "bg-green-500" : r[1] >= 60 ? "bg-yellow-500" : "bg-blue-500"}`} style={{ width: `${r[1]}%` }} />
                        </div>
                      </div>
                    </td>
                    <td className="px-4 py-3 text-green-400 font-medium">+{r[2]}%</td>
                    <td className="px-4 py-3"><Badge variant={riskVariant[r[3]] ?? "default"}>{riskMap[r[3]] ?? r[3]}</Badge></td>
                    <td className="px-4 py-3 font-mono text-xs text-muted-foreground hidden md:table-cell">{String(r[4]).slice(0, 16)}</td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </CardContent>
      </Card>
    </div>
  );
}