import { router } from "expo-router";
import {
  ActivityIndicator,
  FlatList,
  Image,
  Text,
  TouchableOpacity,
  View,
} from "react-native";
import { SafeAreaView } from "react-native-safe-area-context";

import { ActiveRideBanner } from "@/components/active-ride-banner";
import { GoogleTextInput } from "@/components/google-text-input";
import { LocationNotice } from "@/components/location-notice";
import { Map } from "@/components/map";
import { NearbySuggestions } from "@/components/nearby-suggestions";
import { RideCard } from "@/components/ride-card";
import { ServiceSelector } from "@/components/service-selector";
import { icons, images } from "@/constants";
import { useT } from "@/lib/i18n";
import { useSession } from "@/lib/session";
import { useTheme } from "@/lib/theme";
import { useUserLocation } from "@/lib/use-user-location";
import { useLocationStore } from "@/store";
import { useFetch } from "@/lib/fetch";
import type { Ride } from "@/types/type";

const Home = () => {
  const setDestinationLocation = useLocationStore(
    (state) => state.setDestinationLocation,
  );
  const clearDestination = useLocationStore((state) => state.clearDestination);
  const { signOut, user } = useSession();
  const { isDark } = useTheme();
  const t = useT();
  const { data: recentRides, loading } = useFetch<Ride[]>("/(api)/ride/list");

  const { status: locationStatus, retry: retryLocation } = useUserLocation();

  const handleSignOut = () => {
    // A different person signing in on this phone must not inherit the last
    // rider's destination — the store lives in the JS process, not the session.
    clearDestination();
    signOut();

    router.replace("/(auth)/sign-in");
  };
  const handleDestinationPress = (location: {
    latitude: number;
    longitude: number;
    address: string;
  }) => {
    setDestinationLocation(location);

    router.push("/(root)/find-ride");
  };

  return (
    <SafeAreaView className="bg-general-500 dark:bg-neutral-950">
      <FlatList
        data={recentRides?.slice(0, 5)}
        renderItem={({ item }) => <RideCard ride={item} />}
        className="px-5"
        keyboardShouldPersistTaps="handled"
        contentContainerStyle={{
          paddingBottom: 100,
        }}
        ListEmptyComponent={
          <View className="flex flex-col items-center justify-center">
            {!loading ? (
              <>
                <Image
                  source={images.noResult}
                  alt={t("home.noRecentAlt")}
                  className="w-40 h-40"
                  resizeMode="contain"
                />
                <Text className="text-sm text-black dark:text-white">{t("home.noRecent")}</Text>
              </>
            ) : (
              <ActivityIndicator size="small" color={isDark ? "#fff" : "#000"} />
            )}
          </View>
        }
        // Passed as an *element*, not as `() => (...)`. VirtualizedList
        // renders a function prop as `<HeaderComponent />`, so a fresh arrow
        // function each render is a fresh element type: React unmounts the
        // whole header — MapView included — and mounts a new one. Recreating
        // the Android map surface on every re-render leaves it grey with the
        // Google logo and tiles that never finish loading.
        ListHeaderComponent={
          <>
            <View className="flex flex-row items-center justify-between my-5">
              <Text
                className="text-base font-JakartaExtraBold text-black dark:text-white"
                numberOfLines={1}
              >
                {t("home.welcome", { name: user?.name || user?.email || "" })}
              </Text>

              <View className="flex flex-row items-center gap-x-1">
                <TouchableOpacity
                  onPress={handleSignOut}
                  className="justify-center items-center w-10 h-10 rounded-full bg-white dark:bg-neutral-900"
                >
                  <Image source={icons.out} className="w-4 h-4" alt={t("home.logoutAlt")} />
                </TouchableOpacity>
              </View>
            </View>

            {/* Unfinished ride or unrated trip — the way back into a ride the
                rider navigated away from. */}
            <ActiveRideBanner />

            <GoogleTextInput
              icon={icons.search}
              containerStyles="bg-white dark:bg-neutral-900 shadow-md shadow-neutral-300 dark:shadow-neutral-950/40"
              handlePress={handleDestinationPress}
            />

            <Text className="text-xl font-JakartaBold mt-5 mb-3 text-black dark:text-white">
              {t("home.currentLocation")}
            </Text>

            <View className="w-full h-[300px] rounded-2xl overflow-hidden bg-white dark:bg-neutral-900">
              {locationStatus === "pending" || locationStatus === "granted" ? (
                <>
                  {/* The map draws straight away on the Beirut fallback so the
                      slot never sits empty while the fix is still coming. */}
                  <Map routeless />

                  {locationStatus === "pending" ? (
                    <View className="absolute bottom-3 self-center flex-row items-center rounded-full bg-white/95 dark:bg-neutral-900/95 px-4 py-2 shadow-md shadow-neutral-400/40 dark:shadow-neutral-950/40">
                      <ActivityIndicator size="small" color="#0286ff" />
                      <Text className="ml-2 text-xs font-JakartaMedium text-general-200 dark:text-neutral-400">
                        {t("home.findingLocation")}
                      </Text>
                    </View>
                  ) : null}
                </>
              ) : (
                <LocationNotice
                  status={locationStatus}
                  onRetry={retryLocation}
                />
              )}
            </View>

            <Text className="text-xl font-JakartaBold mt-5 mb-3 text-black dark:text-white">
              {t("home.whatNeed")}
            </Text>

            <ServiceSelector />

            <View className="mt-5">
              <NearbySuggestions />
            </View>

            <Text className="text-xl font-JakartaBold mt-5 mb-3 text-black dark:text-white">
              {t("home.recentRides")}
            </Text>
          </>
        }
      />
    </SafeAreaView>
  );
};

export default Home;
