import { router } from "expo-router";
import { useState } from "react";
import { Alert, Image, ScrollView, View } from "react-native";
import { useTranslation } from "react-i18next";
import { Badge } from "@/components/ui/Badge";
import { Button } from "@/components/ui/Button";
import { Card } from "@/components/ui/Card";
import { EmptyState } from "@/components/ui/EmptyState";
import { Field } from "@/components/ui/Field";
import { AppHeader } from "@/components/ui/Header";
import { Screen } from "@/components/ui/Screen";
import { Text } from "@/components/ui/Text";
import { useOrdersStore } from "@/lib/stores/ordersStore";
import { colors, gutter, radii } from "@/lib/theme";
import { formatETB } from "@/lib/utils";
import { routes } from "@/lib/routes";

const toneFor = {
  requested: "neutral",
  confirmed: "info",
  paid: "brand",
  dispatched: "warn",
  delivered: "brand",
  completed: "brand",
  cancelled: "danger",
} as const;

export default function OrdersScreen() {
  const { t } = useTranslation();
  const orders = useOrdersStore((s) => s.orders);
  const getByPickupCode = useOrdersStore((s) => s.getByPickupCode);
  const [lookup, setLookup] = useState("");

  const findByCode = () => {
    const order = getByPickupCode(lookup);
    if (!order) {
      Alert.alert(
        "Code not found",
        "Check the GSH-XXXX code from checkout. Demo sample: GSH-GUEST"
      );
      return;
    }
    router.push(routes.orderDetail(order.id));
  };

  return (
    <Screen>
      <AppHeader
        title={t("common.orders")}
        subtitle="Order history — not the same as notifications"
      />
      <ScrollView
        contentContainerStyle={{
          paddingHorizontal: gutter,
          paddingBottom: 40,
          gap: 12,
        }}
      >
        <Card elevated={false}>
          <Text variant="h3">Find with pickup code</Text>
          <Text variant="caption" color={colors.muted} style={{ marginTop: 4 }}>
            Guests can open an order by entering the quick code from checkout.
          </Text>
          <View style={{ marginTop: 12, gap: 10 }}>
            <Field
              label="Pickup code"
              value={lookup}
              onChangeText={setLookup}
              autoCapitalize="characters"
              placeholder="GSH-GUEST"
              icon="key-outline"
            />
            <Button title="Look up order" variant="outline" onPress={findByCode} />
          </View>
        </Card>

        {orders.length === 0 ? (
          <EmptyState
            icon="receipt-outline"
            title="No orders yet"
            body="Your purchases will show up here."
            actionTitle="Start shopping"
            onAction={() => router.push(routes.shop)}
          />
        ) : (
          orders.map((o) => (
            <Card key={o.id} onPress={() => router.push(routes.orderDetail(o.id))}>
              <View style={{ flexDirection: "row", justifyContent: "space-between", gap: 12 }}>
                <View style={{ flex: 1 }}>
                  <Text variant="h3">
                    {o.anyBranch
                      ? "Any-branch pickup"
                      : o.fulfillment === "pickup"
                        ? "Pickup"
                        : "Delivery"}{" "}
                    · {o.areaLabel}
                  </Text>
                  <Text variant="caption" color={colors.subtle} style={{ marginTop: 4 }}>
                    {new Date(o.createdAt).toLocaleString()} · {o.paymentMethod}
                    {o.pickupCode ? ` · ${o.pickupCode}` : ""}
                  </Text>
                </View>
                <Badge label={o.status} tone={toneFor[o.status]} />
              </View>

              <View style={{ flexDirection: "row", gap: 8, marginTop: 12 }}>
                {o.items.slice(0, 3).map((item) => (
                  <Image
                    key={item.productId}
                    source={{ uri: item.image }}
                    style={{
                      width: 44,
                      height: 44,
                      borderRadius: radii.sm,
                      backgroundColor: colors.surfaceAlt,
                    }}
                    resizeMode="contain"
                  />
                ))}
                {o.items.length > 3 ? (
                  <View
                    style={{
                      width: 44,
                      height: 44,
                      borderRadius: radii.sm,
                      backgroundColor: colors.surfaceAlt,
                      alignItems: "center",
                      justifyContent: "center",
                    }}
                  >
                    <Text variant="micro">+{o.items.length - 3}</Text>
                  </View>
                ) : null}
              </View>

              <View
                style={{
                  marginTop: 12,
                  flexDirection: "row",
                  justifyContent: "space-between",
                  alignItems: "center",
                }}
              >
                <Text variant="price">{formatETB(o.total)}</Text>
                <Text variant="label" color={colors.brandText}>
                  View details
                </Text>
              </View>
            </Card>
          ))
        )}
      </ScrollView>
    </Screen>
  );
}