import {
  Avatar,
  AvatarFallback,
  AvatarImage,
  Button,
  ContextMenu,
  ContextMenuContent,
  ContextMenuItem,
  ContextMenuTrigger,
} from "@tensamin/ui";
import {
  focusParticipant,
  getRoomMetadata,
  setCallView,
  startWatchingStream,
  useCall,
} from "../../store";
import { Track, type Participant } from "livekit-client";
import { useEffect, useRef, useState } from "react";
import { useUser, type User } from "@tensamin/user/context";
import { useIsSpeaking } from "../../speakingState";
import VideoViewer from "../videoViewer";
import { HeadphoneOff, MicOff, Monitor, Plus, Shield } from "lucide-react";

function getTrackPublicationBySource(
  participant: Participant | undefined,
  source: Track.Source,
) {
  if (!participant) {
    return undefined;
  }

  return [...participant.trackPublications.values()].find(
    (publication) => publication.source === source,
  );
}

function TransparentButton({ children }: { children: React.ReactNode }) {
  return (
    <div className="h-6 px-1.5 bg-black/40 backdrop-blur-xs border rounded-sm flex items-center justify-center">
      {children}
    </div>
  );
}

function Overlay({
  type,
  user,
  participant,
}: {
  type: "user" | "stream";
  user: User;
  participant: Participant;
}) {
  const isAdmin = getRoomMetadata()?.admins.includes(user.user_id) === true;
  const isDeafened = participant.attributes["deafened"] === "true";

  return (
    <div className="w-full h-auto flex items-center gap-1">
      {type === "user" && (
        <>
          {!participant.isMicrophoneEnabled && (
            <TransparentButton>
              <MicOff className="size-3.5" />
            </TransparentButton>
          )}
          {isDeafened && (
            <TransparentButton>
              <HeadphoneOff className="size-3.5" />
            </TransparentButton>
          )}
          {isAdmin && (
            <TransparentButton>
              <Shield className="size-3.5" />
            </TransparentButton>
          )}
        </>
      )}
      {type === "stream" && (
        <TransparentButton>
          <Monitor className="size-3.5" />
        </TransparentButton>
      )}
      <TransparentButton>
        <p className="text-sm">{user.display}</p>
      </TransparentButton>
    </div>
  );
}

export default function Base({
  participant,
  type,
  fill = false,
  flush = false,
}: {
  participant: Participant | undefined;
  type: "user" | "stream";
  fill?: boolean;
  flush?: boolean;
}) {
  const { get } = useUser();

  const focusedParticipantId = useCall((state) => state.focusedParticipantId);
  const view = useCall((state) => state.view);
  const [user, setUser] = useState<User | null>(null);
  const isSpeaking = useIsSpeaking(user?.user_id ?? -1);
  const screenSharePublication = getTrackPublicationBySource(
    participant,
    Track.Source.ScreenShare,
  );
  const screenSharePreview = participant?.attributes["screenSharePreview"];

  useEffect(() => {
    const participantId = Number(participant?.identity);

    if (
      !participant ||
      !Number.isInteger(participantId) ||
      participantId <= 0
    ) {
      // eslint-disable-next-line
      setUser(null);
      return;
    }

    let active = true;

    void get(participantId).then((nextUser) => {
      if (active) {
        setUser(nextUser);
      }
    });

    return () => {
      active = false;
    };
  }, [participant, get]);

  // Avatar calc
  const currentCard = useRef<HTMLDivElement>(null);

  if (!participant || !user) {
    return (
      <div
        className={`aspect-video w-full animate-pulse bg-muted ${
          flush ? "rounded-none" : "rounded-md"
        }`}
      />
    );
  }

  const onClick = () => {
    if (view === "grid") {
      focusParticipant(user.user_id, type);
    } else {
      if (user.user_id === focusedParticipantId) {
        setCallView("grid");
      } else {
        focusParticipant(user.user_id, type);
      }
    }
  };

  const showStream =
    screenSharePublication?.isSubscribed && screenSharePublication.track;

  const isFocusedInFocusedView =
    view === "focused" && user.user_id === focusedParticipantId;

  return (
    <ContextMenu>
      <ContextMenuTrigger
        render={
          <div
            onClick={onClick}
            className={`relative w-full ${fill ? "h-full border-0" : "aspect-video border-2"} ${
              flush || fill ? "rounded-none" : "rounded-md"
            } ${flush && !fill ? "border-x-0" : ""}`}
          >
            <div className="z-20 absolute bottom-0 left-0 w-full h-full flex justify-start items-end p-2">
              <>
                {type === "stream" && !showStream && (
                  <div className="absolute top-0 left-0 w-full h-full flex items-center justify-center gap-2">
                    <Button
                      variant="outline"
                      onClick={(event) => {
                        if (isFocusedInFocusedView) event.stopPropagation();
                        startWatchingStream(user.user_id);
                      }}
                    >
                      Watch Stream
                    </Button>
                    {!isFocusedInFocusedView && (
                      <Button
                        variant="outline"
                        onClick={(event) => {
                          event.stopPropagation();
                          startWatchingStream(user.user_id);
                        }}
                      >
                        <Plus className="w-8 h-8" />
                      </Button>
                    )}
                  </div>
                )}
                {view === "grid" ||
                (view === "focused" &&
                  user.user_id !== focusedParticipantId) ? (
                  <Overlay type={type} user={user} participant={participant} />
                ) : null}
              </>
            </div>
            <div
              ref={currentCard}
              className={`transition-all duration-150 z-10 bg-card absolute top-0 left-0 w-full h-full flex gap-2 items-center justify-center ${
                flush ? "rounded-none" : "rounded-sm"
              } ${type === "user" && isSpeaking ? "border-4 border-(--primary-foreground-alt)/75" : "border-0"}`}
              style={{ containerType: "size" }}
            >
              {/* Detect video / user and place here */}

              {type === "stream" &&
                (showStream ? (
                  <VideoViewer
                    fill={fill}
                    flush={flush}
                    participantId={participant.identity}
                    publication={screenSharePublication}
                  />
                ) : screenSharePreview ? (
                  <div
                    className={`absolute inset-0 bg-muted h-full w-full object-cover ${
                      flush ? "rounded-none" : "rounded-sm"
                    }`}
                  >
                    <img
                      src={screenSharePreview}
                      className={`blur-sm h-full w-full object-cover opacity-50 ${
                        flush ? "rounded-none" : "rounded-sm"
                      }`}
                    />
                  </div>
                ) : null)}

              {type === "user" && (
                <Avatar
                  style={{
                    width: "32cqh",
                    height: "32cqh",
                  }}
                >
                  <AvatarImage src={user.avatar} />
                  <AvatarFallback
                    style={{
                      fontSize: "11cqh",
                    }}
                  >
                    {user.display.slice(0, 2).toUpperCase()}
                  </AvatarFallback>
                </Avatar>
              )}
            </div>
          </div>
        }
      />
      <ContextMenuContent>
        <ContextMenuItem>Stop Watching</ContextMenuItem>
      </ContextMenuContent>
    </ContextMenu>
  );
}