import { defineRouteConfig } from "@medusajs/admin-sdk";
import { Star } from "@medusajs/icons";
import { Badge, Button, Container, Heading, Text, toast } from "@medusajs/ui";
import { useCallback, useEffect, useState } from "react";
import { sdk } from "../../lib/sdk";

// Moderacion de reseñas: todas nacen "pendiente" (solo compradores
// verificados pueden dejarlas, ver src/api/store/reviews/route.ts) y
// recien se publican en la tienda cuando se aprueban aca.

type Status = "pending" | "approved" | "rejected";

type Review = {
  id: string;
  product_title: string;
  author_name: string;
  rating: number;
  title: string | null;
  content: string;
  status: Status;
  order_id: string;
  created_at: string;
};

const TABS: { status: Status; label: string }[] = [
  { status: "pending", label: "Pendientes" },
  { status: "approved", label: "Publicadas" },
  { status: "rejected", label: "Rechazadas" },
];

const BADGE: Record<Status, "orange" | "green" | "red"> = { pending: "orange", approved: "green", rejected: "red" };
const STATUS_LABEL: Record<Status, string> = { pending: "Pendiente", approved: "Publicada", rejected: "Rechazada" };

function stars(rating: number): string {
  return "★".repeat(rating) + "☆".repeat(5 - rating);
}

const ReviewsPage = () => {
  const [tab, setTab] = useState<Status>("pending");
  const [reviews, setReviews] = useState<Review[]>([]);
  const [loading, setLoading] = useState(true);
  const [busyId, setBusyId] = useState<string | null>(null);

  const load = useCallback(async (status: Status) => {
    setLoading(true);
    const data = await sdk.client.fetch<{ reviews: Review[] }>(`/admin/reviews?status=${status}`);
    setReviews(data.reviews);
    setLoading(false);
  }, []);

  useEffect(() => {
    load(tab);
  }, [load, tab]);

  async function setStatus(review: Review, status: Status) {
    setBusyId(review.id);
    try {
      await sdk.client.fetch(`/admin/reviews/${review.id}`, { method: "post", body: { status } });
      toast.success(status === "approved" ? "Reseña publicada en la tienda" : status === "rejected" ? "Reseña rechazada" : "Reseña devuelta a pendientes");
      await load(tab);
    } catch (error) {
      toast.error((error as Error).message);
    } finally {
      setBusyId(null);
    }
  }

  async function remove(review: Review) {
    if (!window.confirm(`¿Borrar la reseña de ${review.author_name}? No se puede deshacer.`)) return;
    setBusyId(review.id);
    try {
      await sdk.client.fetch(`/admin/reviews/${review.id}`, { method: "delete" });
      toast.success("Reseña borrada");
      await load(tab);
    } catch (error) {
      toast.error((error as Error).message);
    } finally {
      setBusyId(null);
    }
  }

  return (
    <Container className="divide-y p-0">
      <div className="flex flex-wrap items-center justify-between gap-3 px-6 py-4">
        <div>
          <Heading level="h2">Reseñas</Heading>
          <Text size="small" className="text-ui-fg-subtle">
            Solo compradores verificados pueden reseñar. Nada se publica sin tu aprobación.
          </Text>
        </div>
        <div className="flex gap-2">
          {TABS.map((item) => (
            <Button key={item.status} size="small" variant={tab === item.status ? "primary" : "secondary"} onClick={() => setTab(item.status)}>
              {item.label}
            </Button>
          ))}
        </div>
      </div>

      {loading ? (
        <div className="px-6 py-8"><Text>Cargando…</Text></div>
      ) : reviews.length === 0 ? (
        <div className="px-6 py-8"><Text className="text-ui-fg-subtle">No hay reseñas en esta pestaña.</Text></div>
      ) : (
        reviews.map((review) => (
          <div key={review.id} className="flex flex-col gap-3 px-6 py-4 md:flex-row md:items-start md:justify-between">
            <div className="max-w-2xl">
              <div className="flex flex-wrap items-center gap-2">
                <Text weight="plus">{review.product_title}</Text>
                <Badge color={BADGE[review.status]} size="2xsmall">{STATUS_LABEL[review.status]}</Badge>
              </div>
              <Text size="small" className="mt-1 text-ui-tag-orange-icon" aria-label={`${review.rating} de 5 estrellas`}>{stars(review.rating)}</Text>
              {review.title && <Text weight="plus" className="mt-1">{review.title}</Text>}
              <Text className="mt-1 whitespace-pre-line">{review.content}</Text>
              <Text size="small" className="mt-2 text-ui-fg-subtle">
                {review.author_name} · {new Date(review.created_at).toLocaleDateString("es-CO")} · pedido {review.order_id}
              </Text>
            </div>
            <div className="flex shrink-0 gap-2">
              {review.status !== "approved" && (
                <Button size="small" isLoading={busyId === review.id} onClick={() => setStatus(review, "approved")}>Aprobar</Button>
              )}
              {review.status !== "rejected" && (
                <Button size="small" variant="secondary" disabled={busyId === review.id} onClick={() => setStatus(review, "rejected")}>Rechazar</Button>
              )}
              <Button size="small" variant="danger" disabled={busyId === review.id} onClick={() => remove(review)}>Borrar</Button>
            </div>
          </div>
        ))
      )}
    </Container>
  );
};

export const config = defineRouteConfig({
  label: "Reseñas",
  icon: Star,
});

export default ReviewsPage;