import { Add, Close } from "@mui/icons-material";
import { Box, IconButton } from "@mui/material";
import {
  cleardragQuestionContentId,
  setModalQuestionParentContentId,
  setOpenedModalQuestions,
  updateDeleteId,
  updateOpenedModalSettingsId,
} from "@root/uiTools/actions";
import { Core, EventObject, NodeSingular } from "cytoscape";
import {
  MutableRefObject,
  forwardRef,
  useEffect,
  useMemo,
  useRef,
} from "react";
import { createPortal } from "react-dom";
import {
  addNode,
  isElementANode,
  isNodeInViewport,
  isQuestionProhibited,
  storeToNodes,
} from "./helper";

const csButtonTypes = ["delete", "add", "settings", "select"] as const;

type CsButtonType = (typeof csButtonTypes)[number];

type CsNodeButtonsByType = Partial<
  Record<CsButtonType, HTMLButtonElement | null>
>;

type CsButtonsById = Record<string, CsNodeButtonsByType | undefined>;

interface Props {
  csElements: ReturnType<typeof storeToNodes>;
  cyRef: MutableRefObject<Core | null>;
}

export default function CsNodeButtons({ csElements, cyRef }: Props) {
  const buttonRefsById = useRef<CsButtonsById>({});

  const buttons = useMemo(() => {
    const nodeElements = csElements.filter(isElementANode);
    buttonRefsById.current = nodeElements.reduce<CsButtonsById>(
      (acc, node) => ((acc[node.data.id] = {}), acc),
      {},
    );
    return (
      <Box
        sx={{
          position: "absolute",
          top: 0,
          left: 0,
          width: "100%",
          height: "100%",
        }}
      >
        {nodeElements.flatMap((csElement) => [
          <CsDeleteButton
            key={`delete-${csElement.data.id}`}
            ref={(r) => {
              const buttonData = buttonRefsById.current[csElement.data.id];
              if (buttonData) buttonData.delete = r;
            }}
            onClick={() => {
              updateDeleteId(csElement.data.id);
            }}
          />,
          <CsAddButton
            key={`add-${csElement.data.id}`}
            ref={(r) => {
              const buttonData = buttonRefsById.current[csElement.data.id];
              if (buttonData) buttonData.add = r;
            }}
            onPointerUp={() => {
              addNode({ parentNodeContentId: csElement.data.id });
              cleardragQuestionContentId();
            }}
          />,
          !csElement.data.isRoot &&
            !isQuestionProhibited(csElement.data.qtype) && (
              <CsSettingsButton
                key={`settings-${csElement.data.id}`}
                ref={(r) => {
                  const buttonData = buttonRefsById.current[csElement.data.id];
                  if (buttonData) buttonData.settings = r;
                }}
                onClick={() => {
                  updateOpenedModalSettingsId(csElement.data.id);
                }}
              />
            ),
          //оболочка узла
          <CsSelectButton
            key={`select-${csElement.data.id}`}
            ref={(r) => {
              const buttonData = buttonRefsById.current[csElement.data.id];
              if (buttonData) buttonData.select = r;
            }}
            onClick={() => {
              setModalQuestionParentContentId(csElement.data.id);
              console.log("csElement ", csElement);
              setOpenedModalQuestions(
                !(
                  isQuestionProhibited(csElement.data.type) &&
                  csElement.data.children > 0
                ),
              );
            }}
          />,
        ])}
      </Box>
    );
  }, [csElements]);

  useEffect(function attachViewportHandler() {
    const cy = cyRef.current;
    if (!cy) return;

    let rafId: number = 0;
    function handleViewportChange(event: EventObject) {
      cancelAnimationFrame(rafId);
      rafId = requestAnimationFrame(() => {
        for (const nodeId in buttonRefsById.current) {
          const buttonsByType = buttonRefsById.current[nodeId];
          if (!buttonsByType) continue;

          const node = event.cy.$id(nodeId);
          if (!node) {
            console.warn("Could not find node for id:" + nodeId);
            continue;
          }

          for (const buttonType of csButtonTypes) {
            const button = buttonsByType[buttonType];
            if (!button) continue;

            applyButtonStyleByType[buttonType](button, node, event.cy.zoom());
          }
        }
      });
    }

    cy.on("viewport", handleViewportChange);

    return () => {
      cy.off("viewport", handleViewportChange);
    };
  }, []);

  const container = cyRef.current?.container();
  const buttonsPortal = container ? createPortal(buttons, container) : null;

  return buttonsPortal;
}

const applyButtonStyleByType: Record<
  CsButtonType,
  (button: HTMLButtonElement, node: NodeSingular, zoom: number) => void
> = {
  delete(button, node, zoom) {
    const nodePosition = node.renderedPosition();
    const shiftX =
      node.renderedWidth() / 2 - (CLOSE_BUTTON_WIDTH / 2 + 6) * zoom;
    const shiftY =
      node.renderedHeight() / 2 - (CLOSE_BUTTON_HEIGHT / 2 + 6) * zoom;

    if (!isNodeInViewport(node, 100)) {
      return button.style.setProperty("display", "none");
    }

    button.style.setProperty("display", "flex");
    button.style.setProperty("left", `${nodePosition.x}px`);
    button.style.setProperty("top", `${nodePosition.y}px`);
    button.style.setProperty(
      "transform",
      `translate3d(calc(-50% + ${shiftX}px), calc(-50% - ${shiftY}px), 0) scale(${zoom})`,
    );
  },
  add(button, node, zoom) {
    const nodePosition = node.renderedPosition();
    const shiftX = node.renderedWidth() / 2 + (ADD_BUTTON_WIDTH / 2) * zoom;

    if (!isNodeInViewport(node, 100)) {
      return button.style.setProperty("display", "none");
    }

    button.style.setProperty("display", "flex");
    button.style.setProperty("left", `${nodePosition.x}px`);
    button.style.setProperty("top", `${nodePosition.y}px`);
    button.style.setProperty(
      "transform",
      `translate3d(calc(-50% + ${shiftX}px), -50%, 0) scale(${zoom})`,
    );
  },
  settings(button, node, zoom) {
    const nodePosition = node.renderedPosition();
    const shiftX =
      -node.renderedWidth() / 2 - (SETTINGS_BUTTON_WIDTH / 2) * zoom;

    if (!isNodeInViewport(node, 100)) {
      return button.style.setProperty("display", "none");
    }

    button.style.setProperty("display", "flex");
    button.style.setProperty("left", `${nodePosition.x}px`);
    button.style.setProperty("top", `${nodePosition.y}px`);
    button.style.setProperty(
      "transform",
      `translate3d(calc(-50% + ${shiftX}px), -50%, 0) scale(${zoom})`,
    );
  },
  select(button, node, zoom) {
    const nodePosition = node.renderedPosition();

    if (!isNodeInViewport(node, 100)) {
      return button.style.setProperty("display", "none");
    }

    button.style.setProperty("display", "flex");
    button.style.setProperty("left", `${nodePosition.x}px`);
    button.style.setProperty("top", `${nodePosition.y}px`);
    button.style.setProperty(
      "transform",
      `translate3d(-50%, -50%, 0) scale(${zoom})`,
    );
  },
};

const CLOSE_BUTTON_WIDTH = 24;
const CLOSE_BUTTON_HEIGHT = CLOSE_BUTTON_WIDTH;

const CsDeleteButton = forwardRef<
  HTMLButtonElement,
  {
    onClick: () => void;
  }
>(({ onClick }, ref) => (
  <IconButton
    ref={ref}
    sx={{
      position: "absolute",
      width: CLOSE_BUTTON_WIDTH,
      height: CLOSE_BUTTON_HEIGHT,
      color: "white",
      backgroundColor: "rgba(154, 154, 175, 0.7)",
      borderRadius: "6px",
      borderTopRightRadius: "8px",
      p: 0,
      zIndex: 1,
      ":hover": {
        backgroundColor: "rgba(154, 154, 175, 0.9)",
      },
    }}
    onClick={onClick}
    onMouseDownCapture={(event) => event.stopPropagation()}
    onTouchStartCapture={(event) => event.stopPropagation()}
  >
    <Close sx={{ width: "16px", height: "16px" }} />
  </IconButton>
));

const ADD_BUTTON_WIDTH = 40;
const ADD_BUTTON_HEIGHT = ADD_BUTTON_WIDTH;

const CsAddButton = forwardRef<
  HTMLButtonElement,
  {
    onPointerUp: () => void;
  }
>(({ onPointerUp }, ref) => (
  <IconButton
    ref={ref}
    sx={{
      position: "absolute",
      width: ADD_BUTTON_WIDTH,
      height: ADD_BUTTON_HEIGHT,
      color: "rgba(154, 154, 175, 0.5)",
      backgroundColor: "#eeeff4",
      borderRadius: "6px",
      border: "1.5px dashed rgba(154, 154, 175, 0.5)",
      p: 0,
      zIndex: 1,
      ":hover": {
        backgroundColor: "#f9f9fc",
      },
    }}
    onPointerUp={onPointerUp}
    onMouseDownCapture={(event) => event.stopPropagation()}
    onTouchStartCapture={(event) => event.stopPropagation()}
  >
    <Add />
  </IconButton>
));

const SETTINGS_BUTTON_WIDTH = 70;
const SETTINGS_BUTTON_HEIGHT = 60;

const CsSettingsButton = forwardRef<
  HTMLButtonElement,
  {
    onClick: () => void;
  }
>(({ onClick }, ref) => (
  <IconButton
    ref={ref}
    sx={{
      position: "absolute",
      width: SETTINGS_BUTTON_WIDTH,
      height: SETTINGS_BUTTON_HEIGHT,
      borderRadius: "6px",
      zIndex: 1,
    }}
    onClick={onClick}
    onMouseDownCapture={(event) => event.stopPropagation()}
    onTouchStartCapture={(event) => event.stopPropagation()}
  >
    <svg viewBox="0 0 33 14" fill="none">
      <path
        d="M32 7L18 7M32 7L28.2879 11M32 7L28.2879 3"
        stroke="#7E2AEA"
        strokeWidth="1.5"
        strokeLinecap="round"
        strokeLinejoin="round"
      />
      <path
        fillRule="evenodd"
        clipRule="evenodd"
        d="M7.94882 1.13431C8.27877 1.20499 8.48562 1.51017 8.60097 1.82727C8.74184 2.21454 9.01459 2.55625 9.3994 2.77842C9.7475 2.9794 10.1345 3.05205 10.5056 3.01104C10.8406 2.97403 11.2052 3.02416 11.415 3.28791C11.7809 3.74777 12.0812 4.26207 12.302 4.81671C12.4425 5.16982 12.2499 5.54856 11.9934 5.82905C11.6982 6.15204 11.518 6.58208 11.518 7.05419C11.518 7.52631 11.6982 7.95634 11.9934 8.27933C12.2499 8.55983 12.4425 8.93857 12.302 9.29168C12.0813 9.84611 11.7811 10.3602 11.4155 10.82C11.2056 11.0838 10.8408 11.1339 10.5058 11.0969C10.1346 11.0558 9.74757 11.1284 9.3994 11.3295C9.01448 11.5517 8.74169 11.8935 8.60085 12.2809C8.48553 12.5981 8.27866 12.9034 7.94863 12.9741C7.53788 13.0621 7.11169 13.1084 6.67467 13.1084C6.23796 13.1084 5.81204 13.0621 5.40155 12.9743C5.07144 12.9036 4.86452 12.5983 4.74919 12.281C4.60836 11.8936 4.33556 11.5517 3.95062 11.3295C3.60233 11.1284 3.21513 11.0558 2.84388 11.0969C2.50874 11.134 2.14388 11.084 1.93398 10.8201C1.56827 10.3603 1.26803 9.84615 1.04738 9.29168C0.906851 8.93856 1.09947 8.55983 1.3559 8.27933C1.65119 7.95634 1.83132 7.52631 1.83132 7.05419C1.83132 6.58208 1.65119 6.15204 1.3559 5.82905C1.09947 5.54856 0.906851 5.16982 1.04738 4.81671C1.26812 4.26203 1.56849 3.74768 1.93439 3.28779C2.14427 3.02399 2.50902 2.97391 2.84408 3.011C3.21527 3.0521 3.6024 2.97947 3.95062 2.77842C4.33545 2.55624 4.60821 2.2145 4.74908 1.8272C4.86444 1.51003 5.07134 1.20477 5.40136 1.13413C5.81191 1.04625 6.23789 1 6.67467 1C7.11175 1 7.53802 1.04632 7.94882 1.13431Z"
        fill="white"
      />
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        fill="#7E2AEA"
      />
      <circle
        cx="1.81626"
        cy="1.81626"
        r="1.81626"
        transform="matrix(-1 0 0 1 8.49219 5.23438)"
        fill="#DDDCE7"
        stroke="#7E2AEA"
        strokeWidth="1.5"
      />
    </svg>
  </IconButton>
));

const SELECT_BUTTON_WIDTH = 130;
const SELECT_BUTTON_HEIGHT = SELECT_BUTTON_WIDTH;

const CsSelectButton = forwardRef<
  HTMLButtonElement,
  {
    onClick: () => void;
  }
>(({ onClick }, ref) => (
  <IconButton
    ref={ref}
    sx={{
      position: "absolute",
      width: SELECT_BUTTON_WIDTH,
      height: SELECT_BUTTON_HEIGHT,
      backgroundColor: "rgb(0 0 0 / 0)",
      borderRadius: "8px",
      p: 0,
      zIndex: 0,
    }}
    onClick={onClick}
    onMouseDownCapture={(event) => event.stopPropagation()}
    onTouchStartCapture={(event) => event.stopPropagation()}
  />
));