import Link from "next/link";
import { auth } from "../lib/auth";
import { ownerFilter } from "../lib/authz";
import { getPipeline, getClosed } from "../lib/queries";
import LoginPrompt from "../components/LoginPrompt";
import ErrorNotice from "../components/ErrorNotice";
import { DYN, ACT_COLOR, money2 } from "../lib/constants";

export const dynamic = "force-dynamic";

function currentMonth() {
  const d = new Date();
  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}`;
}

const SETS = [
  { key: "pipe", label: "Tubería activa" },
  { key: "ganadas", label: "Ganadas" },
  { key: "perdidas", label: "Perdidas" },
];

export default async function DetallePage({ searchParams }) {
  const session = await auth();
  if (!session?.email) return <LoginPrompt />;

  const { owner, set } = await searchParams;
  const scope = ownerFilter(session, owner);
  const detSet = SETS.some((s) => s.key === set) ? set : "pipe";
  const mes = currentMonth();

  let rows;
  try {
    if (detSet === "pipe") rows = await getPipeline(session.accessToken, scope);
    else if (detSet === "ganadas") rows = await getClosed(session.accessToken, scope, 1, mes);
    else rows = await getClosed(session.accessToken, scope, 2, mes);
  } catch (error) {
    return <ErrorNotice error={error} />;
  }
  const sorted = [...rows].sort((a, b) => (b.est ?? b.actual ?? 0) - (a.est ?? a.actual ?? 0));

  const qs = (key) => {
    const p = new URLSearchParams();
    if (owner) p.set("owner", owner);
    p.set("set", key);
    return `/detalle?${p.toString()}`;
  };

  return (
    <div style={{ padding: 24 }}>
      <h2>Detalle</h2>

      <div className="seg-tabs" style={{ marginBottom: 16 }}>
        {SETS.map((s) => (
          <Link key={s.key} href={qs(s.key)} className={detSet === s.key ? "on" : ""}>
            <button className={detSet === s.key ? "on" : ""} type="button">
              {s.label}
            </button>
          </Link>
        ))}
      </div>

      <p className="hint" style={{ marginBottom: 12 }}>
        {rows.length} oportunidades{detSet !== "pipe" ? ` (${mes})` : ""} · clic en el nombre abre la oportunidad en
        Dynamics 365.
      </p>

      {sorted.length === 0 ? (
        <p>No hay oportunidades para este filtro.</p>
      ) : (
        <div className="tw">
          <div className="ts">
            <table>
              <thead>
                <tr>
                  <th>Cliente</th>
                  <th>Oportunidad</th>
                  <th>Seg.</th>
                  {!scope.locked && <th>Ejecutivo</th>}
                  {detSet === "pipe" ? (
                    <>
                      <th>Plan cierre</th>
                      <th>Fase actual</th>
                      <th>Actividad</th>
                      <th className="num">MRR est.</th>
                      <th className="num">Forecast</th>
                    </>
                  ) : (
                    <>
                      <th>Tipo</th>
                      <th className="num">MRR</th>
                      <th>Cierre</th>
                    </>
                  )}
                </tr>
              </thead>
              <tbody>
                {sorted.map((o) => (
                  <tr key={o.id}>
                    <td>{o.cliente || "—"}</td>
                    <td>
                      <a className="opp" href={`${DYN}${o.id}`} target="_blank" rel="noopener">
                        {o.name}
                      </a>
                    </td>
                    <td>
                      <span className={`pill ${o.segmento === "Cartera Activa" ? "cartera" : "nuevo"}`}>
                        {o.segmento === "Cartera Activa" ? "CA" : "CN"}
                      </span>
                    </td>
                    {!scope.locked && <td>{o.owner}</td>}
                    {detSet === "pipe" ? (
                      <>
                        <td>{(o.plan || "").replace(" - ", " ")}</td>
                        <td>{o.faseActual || "—"}</td>
                        <td>
                          <span style={{ color: ACT_COLOR[o.actividad] || "#9db4c9", fontWeight: 700 }}>
                            ● {o.actividad}
                          </span>
                        </td>
                        <td className="num">{money2(o.est)}</td>
                        <td className="num">{money2(o.fc)}</td>
                      </>
                    ) : (
                      <>
                        <td>{o.tipo}</td>
                        <td className="num">{money2(o.actual)}</td>
                        <td>{o.actualClose || "—"}</td>
                      </>
                    )}
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </div>
      )}
    </div>
  );
}