import Input from "@tensamin/markdown/input";
import {
  Avatar,
  AvatarFallback,
  AvatarImage,
  Card,
  CardHeader,
  Popover,
  PopoverContent,
  PopoverTrigger,
  Skeleton,
} from "@tensamin/ui";
import { useStorage } from "@tensamin/storage/context";
import React, { useEffect, useState, useRef } from "react";
import { Button } from "@tensamin/ui";

import { Plus, Laugh, FileVideo, Forward, X } from "lucide-react";
import { useChat, useReplyMessage } from "../context";
import { useMTP } from "@tensamin/mtp";
import { log, toast } from "@tensamin/shared/log";
import { cn, useIsMobile } from "@tensamin/ui";
import { encryptChatText } from "@tensamin/crypto/chatSecret";

import { useSession } from "@tensamin/storage/session";
import GifPicker from "./gifPicker";
import Wrapper from "@tensamin/user/wrapper";
import Text from "@tensamin/markdown/text";

export default function InputComponent({
  value,
  setValue,
}: {
  value: string;
  setValue: (value: string) => void;
}) {
  const [invertEnterBehavior, setInvertEnterBehavior] = useState(false);

  const { send } = useMTP();
  const {
    addLiveMessage,
    chatSecret,
    userId,
    inputBoxRef,
    replyTo,
    setReplyTo,
  } = useChat();
  const { load, save } = useStorage();
  const { moveUserIdToTop } = useSession();
  const gifPopoverRef = useRef<HTMLDivElement>(null);
  const [gifPopoverOpen, setGifPopoverOpen] = useState(false);
  const [gifPopoverSize, setGifPopoverSize] = useState<{
    width: number;
    height: number;
  }>();

  useEffect(() => {
    void load("settings.reverse_enter_behavior").then((shouldInvert) => {
      setInvertEnterBehavior(shouldInvert);
    });
  }, [load]);

  useEffect(() => {
    void load("chat_picker_size").then((size) => {
      if (size) {
        setGifPopoverSize(size);
      }
    });
  }, [load]);

  async function handleSubmit(content = value, preserveContent = false) {
    if (content.trim() === "") return;

    const time = new Date().getTime();
    const currentValue = content;

    if (!Number.isSafeInteger(userId) || userId <= 0) {
      toast("error", "No conversation selected");
      return;
    }

    if (!chatSecret) {
      toast("error", "Still getting chat secret...");
      return;
    }

    log(3, "chat", "purple", "Message send init, adding live message ...");

    const reference = addLiveMessage({
      NotEncrypted: true,
      SendTime: time,
      Content: currentValue,
      SenderId: ownId,
      MessageState: "awaiting",
      ...(replyTo && { ReplyId: replyTo }),
    });

    log(3, "chat", "purple", "Live message added, encrypting...");

    const encryptedContent = await encryptChatText(
      chatSecret,
      currentValue,
    ).catch((err) => {
      toast("error", "Failed to encrypt message", String(err));
      reference.setFailed(true);
    });

    if (!encryptedContent) return;

    log(3, "chat", "purple", "Content encrypted, sending message...");

    send("MessageSend", {
      Content: encryptedContent,
      ReceiverId: userId,
      SendTime: time,
    }).catch((e) => {
      log(0, "Chat", "red", "Failed to send message", e, {
        ReceiverId: userId,
        SendTime: time,
      });
      reference.setFailed(true);
      toast("error", "Failed to send message");
    });

    if (replyTo) {
      setReplyTo(undefined);
    }

    log(3, "chat", "purple", "Message sent");

    moveUserIdToTop(userId);

    if (!preserveContent) {
      setValue("");
    }
  }

  const isMobile = useIsMobile();

  function handleGifPopoverResizeStart(
    event: React.PointerEvent<HTMLDivElement>,
  ) {
    const popover = gifPopoverRef.current;

    if (!popover) return;

    event.preventDefault();
    event.stopPropagation();

    const rect = popover.getBoundingClientRect();
    const startX = event.clientX;
    const startY = event.clientY;
    const startWidth = rect.width;
    const startHeight = rect.height;
    const minSize = 40;
    const maxSize = 720;

    function clampSize(size: number) {
      return Math.min(Math.max(size, minSize), maxSize);
    }

    function handlePointerMove(moveEvent: PointerEvent) {
      const nextSize = {
        width: clampSize(startWidth + startX - moveEvent.clientX),
        height: clampSize(startHeight + startY - moveEvent.clientY),
      };

      setGifPopoverSize(nextSize);
    }

    function handlePointerUp() {
      const popover = gifPopoverRef.current;

      if (popover) {
        const rect = popover.getBoundingClientRect();

        void save("chat_picker_size", {
          width: clampSize(rect.width),
          height: clampSize(rect.height),
        });
      }

      window.removeEventListener("pointermove", handlePointerMove);
      window.removeEventListener("pointerup", handlePointerUp);
    }

    window.addEventListener("pointermove", handlePointerMove);
    window.addEventListener("pointerup", handlePointerUp);
  }

  const { ownId, replyMessage, replyUserId } = useReplyMessage();

  return (
    <div className="flex flex-col">
      {replyTo !== undefined && (
        <div className="self-center rounded-t-lg bg-background border-t border-x flex items-center justify-start w-[90%] p-1">
          <div className="flex gap-1 w-full items-center">
            <Forward
              color="var(--muted-foreground)"
              className="opacity-60"
              size={18}
            />
            {replyMessage ? (
              <>
                <Wrapper
                  userId={replyUserId ?? ownId}
                  loading={<Skeleton className="rounded-full" />}
                  component={(user) => (
                    <Avatar>
                      <AvatarImage src={user.Avatar} />
                      <AvatarFallback>
                        {user.Display.slice(2, 0).toUpperCase()}
                      </AvatarFallback>
                    </Avatar>
                  )}
                />
                <div className="max-w-full max-h-5 h-5 text-xs truncate">
                  <Text value={replyMessage.Content} />
                </div>
              </>
            ) : (
              <>
                <Skeleton className="w-5 h-5 aspect-square rounded-full" />
                <Skeleton className="w-full h-5" />
              </>
            )}
            <Button
              onClick={() => {
                setReplyTo(undefined);
              }}
              className="w-5 h-5 rounded-md! p-0!"
              size="xs"
              variant="ghost"
            >
              <X
                color="var(--muted-foreground)"
                className="opacity-60"
                size={18}
              />
            </Button>
          </div>
        </div>
      )}
      <Card
        ref={inputBoxRef}
        className={cn(
          "ring-0! rounded-none border-b-0 border-t border-x border-input/70 pt-0 pb-[env(safe-area-inset-bottom)] mx-2",
          isMobile ? "border-0 border-x-0! w-full mx-0 px-2" : "rounded-t-xl",
        )}
      >
        <CardHeader className="relative p-0 flex flex-col">
          <Input
            className="w-full"
            paddingY="13px"
            paddingX="13px"
            placeholder="Send a message..."
            value={value}
            setValue={setValue}
            onSubmit={handleSubmit}
            invertEnterBehavior={invertEnterBehavior}
          />
          <div className="w-full flex justify-between gap-1 p-1 pt-0">
            <div className="flex gap-1">
              <Button className="w-9 h-9 p-0" variant="ghost">
                <Plus size={20} />
              </Button>
              <div className="w-auto flex text-red-500">
                <p>Files list</p>
              </div>
            </div>
            <div className="flex gap-1">
              <Button className="w-9 h-9 p-0" variant="ghost">
                <Laugh size={20} />
              </Button>
              <Popover open={gifPopoverOpen} onOpenChange={setGifPopoverOpen}>
                <PopoverTrigger
                  render={
                    <Button className="w-9 h-9 p-0" variant="ghost">
                      <FileVideo size={20} />
                    </Button>
                  }
                />
                <PopoverContent
                  ref={gifPopoverRef}
                  className="relative min-h-80 max-h-180 min-w-80 max-w-180 overflow-hidden"
                  onTouchMoveCapture={(event) => event.stopPropagation()}
                  onWheelCapture={(event) => event.stopPropagation()}
                  style={{
                    ...gifPopoverSize,
                    maxHeight: gifPopoverSize?.height,
                  }}
                >
                  <div
                    className="absolute left-0 top-0 z-10 h-4 w-4 cursor-nwse-resize"
                    onPointerDown={handleGifPopoverResizeStart}
                  />
                  <GifPicker
                    resizeHeight={gifPopoverSize?.height}
                    resizeWidth={gifPopoverSize?.width}
                    onSelect={(url) => {
                      void handleSubmit(url, true);
                      setGifPopoverOpen(false);
                    }}
                  />
                </PopoverContent>
              </Popover>
            </div>
          </div>
        </CardHeader>
      </Card>
    </div>
  );
}