import { useLocalSearchParams, router } from "expo-router";
import { useEffect } from "react";
import { View } from "react-native";
import MapView, { Marker } from "@/components/maps/AppMap";
import { Badge } from "@/components/ui/Badge";
import { Button } from "@/components/ui/Button";
import { Card, InfoRow } from "@/components/ui/Card";
import { AppHeader } from "@/components/ui/Header";
import { Screen } from "@/components/ui/Screen";
import { Text } from "@/components/ui/Text";
import { getBranchById } from "@/lib/data/branches";
import { routes } from "@/lib/routes";
import { useOrdersStore } from "@/lib/stores/ordersStore";
import { colors, gutter } from "@/lib/theme";
import { formatETB } from "@/lib/utils";

export default function TrackingScreen() {
  const { id } = useLocalSearchParams<{ id: string }>();
  const order = useOrdersStore((s) => s.orders.find((o) => o.id === id));
  const updateStatus = useOrdersStore((s) => s.updateStatus);
  const branch = order?.branchId ? getBranchById(order.branchId) : undefined;

  useEffect(() => {
    if (!order) return;
    if (order.fulfillment === "pickup") return;
    if (order.riderAssigned || order.status === "cancelled" || order.status === "delivered") {
      return;
    }
    if (order.status === "paid" || order.status === "confirmed") {
      const t = setTimeout(() => updateStatus(order.id, "dispatched"), 2500);
      return () => clearTimeout(t);
    }
  }, [order?.id, order?.status, order?.fulfillment]);

  if (!order) {
    return (
      <Screen>
        <AppHeader title="Tracking" />
        <View style={{ padding: gutter }}>
          <Text variant="body" color={colors.muted}>
            Order not found.
          </Text>
        </View>
      </Screen>
    );
  }

  const lat = branch?.lat ?? 9.03;
  const lng = branch?.lng ?? 38.74;
  const isPickup = order.fulfillment === "pickup";

  return (
    <Screen>
      <AppHeader
        title={isPickup ? "Pickup status" : "Live tracking"}
        subtitle={order.id}
        right={<Badge label={order.status} tone="brand" />}
      />
      <MapView
        style={{ flex: 1, marginHorizontal: gutter, borderRadius: 20, overflow: "hidden" }}
        initialRegion={{
          latitude: lat,
          longitude: lng,
          latitudeDelta: 0.06,
          longitudeDelta: 0.06,
        }}
      >
        <Marker
          coordinate={{ latitude: lat, longitude: lng }}
          title={isPickup ? branch?.name ?? "Branch" : "Delivery area"}
          pinColor={colors.brand}
        />
        {!isPickup && order.riderAssigned ? (
          <Marker
            coordinate={{ latitude: lat - 0.01, longitude: lng + 0.012 }}
            title="Rider"
            description={order.status}
          />
        ) : null}
      </MapView>

      <View style={{ padding: gutter, gap: 12 }}>
        <Card elevated={false}>
          <Text variant="h3">
            {isPickup
              ? order.status === "delivered" || order.status === "completed"
                ? "Collected"
                : "Ready for pickup soon"
              : order.riderAssigned
                ? "Rider on the way"
                : "Preparing your order"}
          </Text>
          <Text variant="bodySm" color={colors.muted} style={{ marginTop: 6 }}>
            {isPickup
              ? `${branch?.name ?? "Branch"} · ${branch?.hours ?? ""} · ${branch?.area ?? order.areaLabel}`
              : `${order.areaLabel ?? "Addis Ababa"} · ETA 25–40 min (mock)`}
          </Text>
          <InfoRow label="Total" value={formatETB(order.total)} />
          <InfoRow label="Payment" value={order.paymentMethod} last />
        </Card>

        <Button
          title="View full order"
          variant="outline"
          onPress={() => router.push(routes.orderDetail(order.id))}
        />
        {!isPickup && order.status !== "delivered" && order.status !== "cancelled" ? (
          <Button
            title="Mark delivered (demo)"
            onPress={() => updateStatus(order.id, "delivered")}
          />
        ) : null}
        {isPickup && order.status !== "delivered" && order.status !== "cancelled" ? (
          <Button
            title="Mark collected (demo)"
            onPress={() => updateStatus(order.id, "delivered")}
          />
        ) : null}
      </View>
    </Screen>
  );
}