import { Ionicons } from "@expo/vector-icons";
import { Video } from "expo-av";
import React, { useState } from "react";
import {
  Dimensions,
  Modal,
  SafeAreaView,
  TouchableOpacity,
} from "react-native";
import Gallery from "react-native-image-gallery";

export default function MediaCacheOverlay({
  photos,
  previewVisible,
  setPreviewVisible,
  imgIndex,
  setImgIndex,
}) {
  const [currentIndex, setcurrentIndex] = useState(0);
  const [dragging, setDragging] = useState(false);

  const videoRef = React.useRef(null);

  return (
    <Modal
      onDismiss={() => setPreviewVisible(false)}
      onRequestClose={() => setPreviewVisible(false)}
      visible={previewVisible}
      transparent={false}
    >
      <SafeAreaView style={{ flex: 1, backgroundColor: "black" }}>
        <Gallery
          initialPage={imgIndex}
          images={photos}
          onPageScroll={({ position }) => setcurrentIndex(position)}
          onPageScrollStateChanged={(state) =>
            state === "idle" ? setDragging(false) : setDragging(true)
          }
        />
        <TouchableOpacity
          style={{ position: "absolute" }}
          onPress={() => setPreviewVisible(false)}
        >
          <Ionicons
            name="ios-close"
            size={64}
            color="dodgerblue"
            style={{ margin: 20 }}
          />
        </TouchableOpacity>
        {!dragging && photos[currentIndex] && photos[currentIndex].videoUrl && (
          <TouchableOpacity
            style={{
              position: "absolute",
              left: Dimensions.get("window").width / 2 - 32,
              top: Dimensions.get("window").height / 2 - 32,
              justifyContent: "center",
              alignItems: "center",
            }}
            onPress={async () => {
              await videoRef.current.loadAsync(
                { uri: photos[currentIndex].videoUrl },
                {},
                false
              );
              videoRef.current.presentFullscreenPlayer();
            }}
          >
            <Ionicons name="play" size={64} color="white" />
          </TouchableOpacity>
        )}
      </SafeAreaView>
      <Video ref={videoRef} useNativeControls />
    </Modal>
  );
}