import {
  MutableRefObject,
  useCallback,
  useEffect,
  useRef,
  useState,
} from "react";
import Hls from "hls.js";
import { isAndroid, isDesktop, isMobile } from "react-device-detect";
import { TransformComponent, TransformWrapper } from "react-zoom-pan-pinch";
import VideoControls from "./VideoControls";
import { VideoResolutionType } from "@/types/live";
import useSWR from "swr";
import { FrigateConfig } from "@/types/frigateConfig";
import { AxiosResponse } from "axios";
import { toast } from "sonner";

// Android native hls does not seek correctly
const USE_NATIVE_HLS = !isAndroid;
const HLS_MIME_TYPE = "application/vnd.apple.mpegurl" as const;
const unsupportedErrorCodes = [
  MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED,
  MediaError.MEDIA_ERR_DECODE,
];

type HlsVideoPlayerProps = {
  videoRef: MutableRefObject<HTMLVideoElement | null>;
  visible: boolean;
  currentSource: string;
  hotKeys: boolean;
  onClipEnded?: () => void;
  onPlayerLoaded?: () => void;
  onTimeUpdate?: (time: number) => void;
  onPlaying?: () => void;
  setFullResolution?: React.Dispatch<React.SetStateAction<VideoResolutionType>>;
  onUploadFrame?: (playTime: number) => Promise<AxiosResponse> | undefined;
};
export default function HlsVideoPlayer({
  videoRef,
  visible,
  currentSource,
  hotKeys,
  onClipEnded,
  onPlayerLoaded,
  onTimeUpdate,
  onPlaying,
  setFullResolution,
  onUploadFrame,
}: HlsVideoPlayerProps) {
  const { data: config } = useSWR<FrigateConfig>("config");

  // playback

  const hlsRef = useRef<Hls>();
  const [useHlsCompat, setUseHlsCompat] = useState(false);
  const [loadedMetadata, setLoadedMetadata] = useState(false);

  const handleLoadedMetadata = useCallback(() => {
    setLoadedMetadata(true);
    if (videoRef.current) {
      if (setFullResolution) {
        setFullResolution({
          width: videoRef.current.videoWidth,
          height: videoRef.current.videoHeight,
        });
      }
    }
  }, [videoRef, setFullResolution]);

  useEffect(() => {
    if (!videoRef.current) {
      return;
    }

    if (USE_NATIVE_HLS && videoRef.current.canPlayType(HLS_MIME_TYPE)) {
      return;
    } else if (Hls.isSupported()) {
      setUseHlsCompat(true);
    }
  }, [videoRef]);

  useEffect(() => {
    if (!videoRef.current) {
      return;
    }

    const currentPlaybackRate = videoRef.current.playbackRate;

    if (!useHlsCompat) {
      videoRef.current.src = currentSource;
      videoRef.current.load();
      return;
    }

    if (!hlsRef.current) {
      hlsRef.current = new Hls();
      hlsRef.current.attachMedia(videoRef.current);
    }

    hlsRef.current.loadSource(currentSource);
    videoRef.current.playbackRate = currentPlaybackRate;
  }, [videoRef, hlsRef, useHlsCompat, currentSource]);

  // controls

  const [isPlaying, setIsPlaying] = useState(true);
  const [muted, setMuted] = useState(true);
  const [volume, setVolume] = useState(1.0);
  const [mobileCtrlTimeout, setMobileCtrlTimeout] = useState<NodeJS.Timeout>();
  const [controls, setControls] = useState(isMobile);
  const [controlsOpen, setControlsOpen] = useState(false);

  useEffect(() => {
    if (!isDesktop) {
      return;
    }

    const callback = (e: MouseEvent) => {
      if (!videoRef.current) {
        return;
      }

      const rect = videoRef.current.getBoundingClientRect();

      if (
        e.clientX > rect.left &&
        e.clientX < rect.right &&
        e.clientY > rect.top &&
        e.clientY < rect.bottom
      ) {
        setControls(true);
      } else {
        setControls(controlsOpen);
      }
    };
    window.addEventListener("mousemove", callback);
    return () => {
      window.removeEventListener("mousemove", callback);
    };
  }, [videoRef, controlsOpen]);

  return (
    <TransformWrapper minScale={1.0}>
      <VideoControls
        className="absolute bottom-5 left-1/2 -translate-x-1/2 z-50"
        video={videoRef.current}
        isPlaying={isPlaying}
        show={visible && (controls || controlsOpen)}
        muted={muted}
        volume={volume}
        features={{
          volume: true,
          seek: true,
          playbackRate: true,
          plusUpload: config?.plus?.enabled == true,
        }}
        setControlsOpen={setControlsOpen}
        setMuted={setMuted}
        playbackRate={videoRef.current?.playbackRate ?? 1}
        hotKeys={hotKeys}
        onPlayPause={(play) => {
          if (!videoRef.current) {
            return;
          }

          if (play) {
            videoRef.current.play();
          } else {
            videoRef.current.pause();
          }
        }}
        onSeek={(diff) => {
          const currentTime = videoRef.current?.currentTime;

          if (!videoRef.current || !currentTime) {
            return;
          }

          videoRef.current.currentTime = Math.max(0, currentTime + diff);
        }}
        onSetPlaybackRate={(rate) =>
          videoRef.current ? (videoRef.current.playbackRate = rate) : null
        }
        onUploadFrame={async () => {
          if (videoRef.current && onUploadFrame) {
            const resp = await onUploadFrame(videoRef.current.currentTime);

            if (resp && resp.status == 200) {
              toast.success("Successfully submitted frame to Frigate Plus", {
                position: "top-center",
              });
            } else {
              toast.success("Failed to submit frame to Frigate Plus", {
                position: "top-center",
              });
            }
          }
        }}
      />
      <TransformComponent
        wrapperStyle={{
          display: visible ? undefined : "none",
          width: "100%",
          height: "100%",
        }}
        wrapperProps={{
          onClick: isDesktop ? undefined : () => setControls(!controls),
        }}
        contentStyle={{
          width: "100%",
          height: isMobile ? "100%" : undefined,
        }}
      >
        <video
          ref={videoRef}
          className={`size-full bg-black rounded-lg md:rounded-2xl ${loadedMetadata ? "" : "invisible"}`}
          preload="auto"
          autoPlay
          controls={false}
          playsInline
          muted={muted}
          onVolumeChange={() => setVolume(videoRef.current?.volume ?? 1.0)}
          onPlay={() => {
            setIsPlaying(true);

            if (isMobile) {
              setControls(true);
              setMobileCtrlTimeout(setTimeout(() => setControls(false), 4000));
            }
          }}
          onPlaying={onPlaying}
          onPause={() => {
            setIsPlaying(false);

            if (isMobile && mobileCtrlTimeout) {
              clearTimeout(mobileCtrlTimeout);
            }
          }}
          onTimeUpdate={() =>
            onTimeUpdate && videoRef.current
              ? onTimeUpdate(videoRef.current.currentTime)
              : undefined
          }
          onLoadedData={onPlayerLoaded}
          onLoadedMetadata={handleLoadedMetadata}
          onEnded={onClipEnded}
          onError={(e) => {
            if (
              !hlsRef.current &&
              // @ts-expect-error code does exist
              unsupportedErrorCodes.includes(e.target.error.code) &&
              videoRef.current
            ) {
              setLoadedMetadata(false);
              setUseHlsCompat(true);
            }
          }}
        />
      </TransformComponent>
    </TransformWrapper>
  );
}