import { PolygonWithLabel } from "@/components/map/PolygonWithLabel";
import { PolylineWithLabel } from "@/components/map/PolylineWithLabel";
import {
  ENTITY,
  EVENT_ALARM_DATA,
  EVENT_BANZONE_DATA,
  EVENT_ENTITY_DATA,
  EVENT_GPS_DATA,
  EVENT_TRACK_POINTS_DATA,
  IOS_PLATFORM,
  LIGHT_THEME,
} from "@/constants";
import { useColorScheme } from "@/hooks/use-color-scheme.web";
import { usePlatform } from "@/hooks/use-platform";
import {
  getAlarmEventBus,
  getBanzonesEventBus,
  getEntitiesEventBus,
  getGpsEventBus,
  getTrackPointsEventBus,
} from "@/services/device_events";
import { getShipIcon } from "@/services/map_service";
import eventBus from "@/utils/eventBus";
import {
  convertWKTLineStringToLatLngArray,
  convertWKTtoLatLngString,
} from "@/utils/geom";
import { useEffect, useRef, useState } from "react";
import {
  Animated,
  Image as RNImage,
  StyleSheet,
  Text,
  TouchableOpacity,
  View,
} from "react-native";
import MapView, { Circle, Marker } from "react-native-maps";
import { SafeAreaView } from "react-native-safe-area-context";

export default function HomeScreen() {
  const [gpsData, setGpsData] = useState<Model.GPSResonse | undefined>(
    undefined
  );
  const [alarmData, setAlarmData] = useState<Model.AlarmResponse | null>(null);
  const [entityData, setEntityData] = useState<
    Model.TransformedEntity[] | null
  >(null);
  const [banzoneData, setBanzoneData] = useState<Model.Zone[] | null>(null);
  const [trackPointsData, setTrackPointsData] = useState<
    Model.ShipTrackPoint[] | null
  >(null);
  const [circleRadius, setCircleRadius] = useState(100);
  const [zoomLevel, setZoomLevel] = useState(10);
  const [isFirstLoad, setIsFirstLoad] = useState(true);
  const [polylineCoordinates, setPolylineCoordinates] = useState<
    number[][] | undefined
  >(undefined);
  const [polygonCoordinates, setPolygonCoordinates] = useState<
    number[][][] | undefined
  >(undefined);
  const platform = usePlatform();
  const theme = useColorScheme();
  const scale = useRef(new Animated.Value(0)).current;
  const opacity = useRef(new Animated.Value(1)).current;
  // console.log("Platform: ", platform);
  // console.log("Theme: ", theme);

  // const [number, setNumber] = useState(0);

  useEffect(() => {
    getGpsEventBus();
    getAlarmEventBus();
    getEntitiesEventBus();
    getBanzonesEventBus();
    getTrackPointsEventBus();
    const queryGpsData = (gpsData: Model.GPSResonse) => {
      setGpsData(gpsData);
    };
    const queryAlarmData = (alarmData: Model.AlarmResponse) => {
      // console.log("Alarm Data: ", alarmData.alarms.length);
      setAlarmData(alarmData);
    };
    const queryEntityData = (entityData: Model.TransformedEntity[]) => {
      // console.log("Entities Length Data: ", entityData.length);

      setEntityData(entityData);
    };
    const queryBanzonesData = (banzoneData: Model.Zone[]) => {
      // console.log("Banzone Data: ", banzoneData.length);

      setBanzoneData(banzoneData);
    };
    const queryTrackPointsData = (TrackPointsData: Model.ShipTrackPoint[]) => {
      // console.log("TrackPoints Data: ", TrackPointsData.length);
      setTrackPointsData(TrackPointsData);
    };

    eventBus.on(EVENT_GPS_DATA, queryGpsData);
    console.log("Registering event handlers in HomeScreen");
    eventBus.on(EVENT_GPS_DATA, queryGpsData);
    console.log("Subscribed to EVENT_GPS_DATA");
    eventBus.on(EVENT_ALARM_DATA, queryAlarmData);
    console.log("Subscribed to EVENT_ALARM_DATA");
    eventBus.on(EVENT_ENTITY_DATA, queryEntityData);
    console.log("Subscribed to EVENT_ENTITY_DATA");
    eventBus.on(EVENT_TRACK_POINTS_DATA, queryTrackPointsData);
    console.log("Subscribed to EVENT_TRACK_POINTS_DATA");
    eventBus.once(EVENT_BANZONE_DATA, queryBanzonesData);
    console.log("Subscribed once to EVENT_BANZONE_DATA");

    return () => {
      console.log("Unregistering event handlers in HomeScreen");
      eventBus.off(EVENT_GPS_DATA, queryGpsData);
      console.log("Unsubscribed EVENT_GPS_DATA");
      eventBus.off(EVENT_ALARM_DATA, queryAlarmData);
      console.log("Unsubscribed EVENT_ALARM_DATA");
      eventBus.off(EVENT_ENTITY_DATA, queryEntityData);
      console.log("Unsubscribed EVENT_ENTITY_DATA");
      eventBus.off(EVENT_TRACK_POINTS_DATA, queryTrackPointsData);
      console.log("Unsubscribed EVENT_TRACK_POINTS_DATA");
    };
  }, []);

  useEffect(() => {
    if (polylineCoordinates !== undefined) {
      console.log("Polyline Khac null");
    } else {
      console.log("Polyline null");
    }
  }, [polylineCoordinates]);

  useEffect(() => {
    setPolylineCoordinates(undefined);
    setPolygonCoordinates(undefined);
    if (!entityData) return;
    if (!banzoneData) return;
    for (const entity of entityData) {
      if (entity.id !== ENTITY.ZONE_ALARM_LIST) {
        continue;
      }

      let zones: any[] = [];
      try {
        zones = entity.valueString ? JSON.parse(entity.valueString) : [];
      } catch (parseError) {
        console.error("Error parsing zone list:", parseError);
        continue;
      }
      // Nếu danh sách zone rỗng, clear tất cả
      if (zones.length === 0) {
        setPolylineCoordinates(undefined);
        setPolygonCoordinates(undefined);
        return;
      }

      for (const zone of zones) {
        console.log("Zone Data: ", zone);
        const geom = banzoneData.find((b) => b.id === zone.zone_id);
        if (!geom) {
          continue;
        }
        const { geom_type, geom_lines, geom_poly } = geom.geom || {};
        if (typeof geom_type !== "number") {
          continue;
        }
        if (geom_type === 2) {
          // if(oldEntityData.find(e => e.id === ))
          // foundPolyline = true;
          const coordinates = convertWKTLineStringToLatLngArray(
            geom_lines || ""
          );
          if (coordinates.length > 0) {
            setPolylineCoordinates(coordinates);
          }
        } else if (geom_type === 1) {
          // foundPolygon = true;
          const coordinates = convertWKTtoLatLngString(geom_poly || "");
          if (coordinates.length > 0) {
            console.log("Polygon Coordinate: ", coordinates);
            setPolygonCoordinates(coordinates);
          }
        }
      }
    }
  }, [banzoneData, entityData]);

  // Hàm tính radius cố định khi zoom change
  const calculateRadiusFromZoom = (zoom: number) => {
    const baseZoom = 10;
    const baseRadius = 100;
    const zoomDifference = baseZoom - zoom;
    const calculatedRadius = baseRadius * Math.pow(2, zoomDifference);
    // console.log("Caculate Radius: ", calculatedRadius);

    return Math.max(calculatedRadius, 50);
  };

  // Xử lý khi region (zoom) thay đổi
  const handleRegionChangeComplete = (newRegion: any) => {
    // Tính zoom level từ latitudeDelta
    // zoom = log2(360 / (latitudeDelta * 2)) + 8
    const zoom = Math.round(Math.log2(360 / (newRegion.latitudeDelta * 2)) + 8);
    const newRadius = calculateRadiusFromZoom(zoom);
    setCircleRadius(newRadius);
    setZoomLevel(zoom);
    // console.log("Zoom level:", zoom, "Circle radius:", newRadius);
  };

  // Tính toán region để focus vào marker của tàu (chỉ lần đầu tiên)
  const getMapRegion = () => {
    if (!isFirstLoad) {
      // Sau lần đầu, return undefined để không force region
      return undefined;
    }
    if (!gpsData) {
      return {
        latitude: 15.70581,
        longitude: 116.152685,
        latitudeDelta: 0.05,
        longitudeDelta: 0.05,
      };
    }

    return {
      latitude: gpsData.lat,
      longitude: gpsData.lon,
      latitudeDelta: 0.05,
      longitudeDelta: 0.05,
    };
  };

  const handleMapReady = () => {
    setTimeout(() => {
      setIsFirstLoad(false);
    }, 2000);
  };

  useEffect(() => {
    if (alarmData?.level === 3) {
      const loop = Animated.loop(
        Animated.sequence([
          Animated.parallel([
            Animated.timing(scale, {
              toValue: 3, // nở to 3 lần
              duration: 1500,
              useNativeDriver: true,
            }),
            Animated.timing(opacity, {
              toValue: 0, // mờ dần
              duration: 1500,
              useNativeDriver: true,
            }),
          ]),
          Animated.parallel([
            Animated.timing(scale, {
              toValue: 0,
              duration: 0,
              useNativeDriver: true,
            }),
            Animated.timing(opacity, {
              toValue: 1,
              duration: 0,
              useNativeDriver: true,
            }),
          ]),
        ])
      );
      loop.start();
      return () => loop.stop();
    }
  }, [alarmData?.level, scale, opacity]);

  return (
    <SafeAreaView edges={["top"]} style={styles.container}>
      <MapView
        onMapReady={handleMapReady}
        onRegionChangeComplete={handleRegionChangeComplete}
        style={styles.map}
        // initialRegion={getMapRegion()}
        region={getMapRegion()}
        userInterfaceStyle={theme === LIGHT_THEME ? "light" : "dark"}
        showsBuildings={false}
        showsIndoors={false}
        loadingEnabled={true}
        mapType={platform === IOS_PLATFORM ? "mutedStandard" : "standard"}
        rotateEnabled={false}
      >
        {trackPointsData &&
          trackPointsData.length > 0 &&
          trackPointsData.map((point, index) => {
            // console.log(`Rendering circle ${index}:`, point);
            return (
              <Circle
                key={index}
                center={{
                  latitude: point.lat,
                  longitude: point.lon,
                }}
                zIndex={50}
                radius={platform === IOS_PLATFORM ? 200 : 50}
                strokeColor="rgba(16, 85, 201, 0.7)"
                fillColor="rgba(16, 85, 201, 0.7)"
                strokeWidth={2}
              />
            );
          })}
        {polylineCoordinates !== undefined && (
          <PolylineWithLabel
            coordinates={polylineCoordinates.map((coord) => ({
              latitude: coord[0],
              longitude: coord[1],
            }))}
            label="Tuyến bờ"
            strokeColor="#FF5733"
            strokeWidth={4}
            showDistance={false}
            zIndex={50}
          />
        )}
        {polygonCoordinates !== undefined && (
          <>
            {polygonCoordinates.map((polygon, index) => {
              // Tạo key ổn định từ tọa độ đầu tiên của polygon
              const polygonKey =
                polygon.length > 0
                  ? `polygon-${polygon[0][0]}-${polygon[0][1]}-${index}`
                  : `polygon-${index}`;

              return (
                // <Polygon
                //   key={polygonKey}
                //   coordinates={polygon.map((coords) => ({
                //     latitude: coords[0],
                //     longitude: coords[1],
                //   }))}
                //   fillColor="rgba(16, 85, 201, 0.6)"
                //   strokeColor="rgba(16, 85, 201, 0.8)"
                //   strokeWidth={2}
                //   zIndex={50}
                // />
                <PolygonWithLabel
                  key={polygonKey}
                  coordinates={polygon.map((coords) => ({
                    latitude: coords[0],
                    longitude: coords[1],
                  }))}
                  label="Test khu đánh bắt"
                  content="Thời gian cấm (từ tháng 1 đến tháng 12)"
                  fillColor="rgba(16, 85, 201, 0.6)"
                  strokeColor="rgba(16, 85, 201, 0.8)"
                  strokeWidth={2}
                  zIndex={50}
                  zoomLevel={zoomLevel}
                />
              );
            })}
          </>
        )}
        {gpsData !== undefined && (
          <Marker
            coordinate={{
              latitude: gpsData.lat,
              longitude: gpsData.lon,
            }}
            title={
              platform === IOS_PLATFORM
                ? "Tàu của mình - iOS"
                : "Tàu của mình - Android"
            }
            zIndex={200}
            anchor={
              platform === IOS_PLATFORM
                ? { x: 0.5, y: 0.5 }
                : { x: 0.5, y: 0.4 }
            }
          >
            <View className="w-8 h-8 items-center justify-center">
              <View style={styles.pingContainer}>
                {alarmData?.level === 3 && (
                  <Animated.View
                    style={[
                      styles.pingCircle,
                      {
                        transform: [{ scale }],
                        opacity,
                      },
                    ]}
                  />
                )}
                <RNImage
                  source={(() => {
                    const icon = getShipIcon(
                      alarmData?.level || 0,
                      gpsData.fishing
                    );
                    return typeof icon === "string" ? { uri: icon } : icon;
                  })()}
                  style={{
                    width: 32,
                    height: 32,
                    transform: [
                      {
                        rotate: `${
                          typeof gpsData.h === "number" && !isNaN(gpsData.h)
                            ? gpsData.h
                            : 0
                        }deg`,
                      },
                    ],
                  }}
                />
              </View>
            </View>
          </Marker>
        )}
      </MapView>
      <TouchableOpacity
        style={styles.button}
        onPress={() => {
          setPolygonCoordinates(undefined);
          setPolylineCoordinates(undefined);
        }}
      >
        <Text style={styles.buttonText}>Get GPS Data</Text>
      </TouchableOpacity>
    </SafeAreaView>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
  },
  map: {
    flex: 1,
  },
  button: {
    // display: "none",
    position: "absolute",
    top: 50,
    right: 20,
    backgroundColor: "#007AFF",
    paddingHorizontal: 16,
    paddingVertical: 12,
    borderRadius: 8,
    elevation: 5,
    shadowColor: "#000",
    shadowOffset: {
      width: 0,
      height: 2,
    },
    shadowOpacity: 0.25,
    shadowRadius: 3.84,
  },
  buttonText: {
    color: "#fff",
    fontSize: 16,
    fontWeight: "600",
  },

  pingContainer: {
    width: 32,
    height: 32,
    alignItems: "center",
    justifyContent: "center",
    overflow: "visible",
  },
  pingCircle: {
    position: "absolute",
    width: 40,
    height: 40,
    borderRadius: 20,
    backgroundColor: "#ED3F27",
  },
  centerDot: {
    width: 20,
    height: 20,
    borderRadius: 10,
    backgroundColor: "#0096FF",
  },
});