import { useEffect, useLayoutEffect, useRef, useState } from "react";
import Cytoscape from "cytoscape";
import CytoscapeComponent from "react-cytoscapejs";
import popper from "cytoscape-popper";
import { Button } from "@mui/material";
import { withErrorBoundary } from "react-error-boundary";
import { enqueueSnackbar } from "notistack";

import { useCurrentQuiz } from "@root/quizes/hooks";
import { updateRootContentId } from "@root/quizes/actions";
import { AnyTypedQuizQuestion } from "@model/questionTypes/shared";
import { useQuestionsStore } from "@root/questions/store";
import { useUiTools } from "@root/uiTools/store";
import {
  deleteQuestion,
  updateQuestion,
  getQuestionByContentId,
  clearRuleForAll,
  createFrontResult,
} from "@root/questions/actions";
import { updateOpenedModalSettingsId } from "@root/uiTools/actions";
import { cleardragQuestionContentId } from "@root/uiTools/actions";

import { useRemoveNode } from "./hooks/useRemoveNode";
import { usePopper } from "./hooks/usePopper";

import { storeToNodes } from "./helper";
import { stylesheet } from "./stylesheet";

import "./styles.css";

import type { Core } from "cytoscape";

Cytoscape.use(popper);

type CsComponentProps = {
  modalQuestionParentContentId: string;
  modalQuestionTargetContentId: string;
  setOpenedModalQuestions: (open: boolean) => void;
  setModalQuestionParentContentId: (id: string) => void;
  setModalQuestionTargetContentId: (id: string) => void;
};

function CsComponent({
  modalQuestionParentContentId,
  modalQuestionTargetContentId,
  setOpenedModalQuestions,
  setModalQuestionParentContentId,
  setModalQuestionTargetContentId,
}: CsComponentProps) {
  const quiz = useCurrentQuiz();

  const { dragQuestionContentId, desireToOpenABranchingModal } = useUiTools();
  const trashQuestions = useQuestionsStore().questions;
  const questions = trashQuestions.filter(
    (question) => question.type !== "result" && question.type !== null
  );
  const [startCreate, setStartCreate] = useState("");
  const [startRemove, setStartRemove] = useState("");

  const cyRef = useRef<Core | null>(null);
  const layoutsContainer = useRef<HTMLDivElement | null>(null);
  const plusesContainer = useRef<HTMLDivElement | null>(null);
  const crossesContainer = useRef<HTMLDivElement | null>(null);
  const gearsContainer = useRef<HTMLDivElement | null>(null);

  const { layoutOptions } = usePopper({
    layoutsContainer,
    plusesContainer,
    crossesContainer,
    gearsContainer,
    setModalQuestionParentContentId,
    setOpenedModalQuestions,
    setStartCreate,
    setStartRemove,
  });
  const { removeNode } = useRemoveNode({
    cyRef,
    layoutOptions,
    layoutsContainer,
    plusesContainer,
    crossesContainer,
    gearsContainer,
  });

  useLayoutEffect(() => {
    const cy = cyRef?.current;
    if (desireToOpenABranchingModal) {
      setTimeout(() => {
        cy?.getElementById(desireToOpenABranchingModal)?.data(
          "eroticeyeblink",
          true
        );
      }, 250);
    } else {
      cy?.elements().data("eroticeyeblink", false);
    }
  }, [desireToOpenABranchingModal]);
  useLayoutEffect(() => {
    updateOpenedModalSettingsId();
    //  updateRootContentId(quiz.id, "")
    //  clearRuleForAll()
  }, []);
  useEffect(() => {
    if (
      modalQuestionTargetContentId.length !== 0 &&
      modalQuestionParentContentId.length !== 0
    ) {
      addNode({
        parentNodeContentId: modalQuestionParentContentId,
        targetNodeContentId: modalQuestionTargetContentId,
      });
    }

    setModalQuestionParentContentId("");
    setModalQuestionTargetContentId("");
  }, [modalQuestionTargetContentId]);

  const addNode = ({
    parentNodeContentId,
    targetNodeContentId,
  }: {
    parentNodeContentId: string;
    targetNodeContentId?: string;
  }) => {
    //запрещаем работу родителя-ребенка если это один и тот же вопрос
    if (parentNodeContentId === targetNodeContentId) return;

    const cy = cyRef?.current;
    const parentNodeChildren = cy?.$(
      'edge[source = "' + parentNodeContentId + '"]'
    )?.length;
    //если есть инфо о выбранном вопросе из модалки - берём родителя из инфо модалки. Иначе из значения дропа
    const targetQuestion = {
      ...getQuestionByContentId(targetNodeContentId || dragQuestionContentId),
    } as AnyTypedQuizQuestion;
    if (
      Object.keys(targetQuestion).length !== 0 &&
      parentNodeContentId &&
      parentNodeChildren !== undefined
    ) {
      clearDataAfterAddNode({
        parentNodeContentId,
        targetQuestion,
        parentNodeChildren,
      });
      cy?.data("changed", true);
      if (quiz) {
        createFrontResult(quiz.backendId, targetQuestion.content.id);
      }
      const es = cy?.add([
        {
          data: {
            id: targetQuestion.content.id,
            label:
              targetQuestion.title === "" || targetQuestion.title === " "
                ? "noname"
                : targetQuestion.title,
          },
        },
        {
          data: {
            source: parentNodeContentId,
            target: targetQuestion.content.id,
          },
        },
      ]);
      cy?.layout(layoutOptions).run();
      console.log(es);
      cy?.center(es);
    } else {
      enqueueSnackbar("Добавляемый вопрос не найден");
    }
  };

  const clearDataAfterAddNode = ({
    parentNodeContentId,
    targetQuestion,
    parentNodeChildren,
  }: {
    parentNodeContentId: string;
    targetQuestion: AnyTypedQuizQuestion;
    parentNodeChildren: number;
  }) => {
    const parentQuestion = {
      ...getQuestionByContentId(parentNodeContentId),
    } as AnyTypedQuizQuestion;

    //смотрим не добавлен ли родителю result. Если да - убираем его. Веточкам result не нужен
    trashQuestions.forEach((targetQuestion) => {
      if (
        targetQuestion.type === "result" &&
        targetQuestion.content.rule.parentId === parentQuestion.content.id
      ) {
        console.log("deleteQ", targetQuestion.id);
        deleteQuestion(targetQuestion.id);
      }
    });

    //предупреждаем добавленный вопрос о том, кто его родитель
    updateQuestion(targetQuestion.content.id, (question) => {
      question.content.rule.parentId = parentNodeContentId;
      question.content.rule.main = [];
    });
    //предупреждаем родителя о новом потомке (если он ещё не знает о нём)
    if (
      !parentQuestion.content.rule.children.includes(targetQuestion.content.id)
    )
      updateQuestion(parentNodeContentId, (question) => {
        question.content.rule.children = [
          ...question.content.rule.children,
          targetQuestion.content.id,
        ];
      });

    //Если детей больше 1 - предупреждаем стор вопросов об открытии модалки ветвления
    if (parentQuestion.content.rule.children >= 1) {
      updateOpenedModalSettingsId(targetQuestion.content.id);
    }
  };

  useEffect(() => {
    if (startCreate) {
      addNode({ parentNodeContentId: startCreate });
      cleardragQuestionContentId();
      setStartCreate("");
    }
  }, [startCreate]);

  useEffect(() => {
    if (startRemove) {
      removeNode(startRemove);
      setStartRemove("");
    }
  }, [startRemove]);

  useEffect(() => {
    document
      .querySelector("#root")
      ?.addEventListener("mouseup", cleardragQuestionContentId);
    const cy = cyRef.current;
    const eles = cy?.add(
      storeToNodes(
        questions.filter(
          (question) => question.type && question.type !== "result"
        ) as AnyTypedQuizQuestion[]
      )
    );
    cy?.data("changed", true);
    // cy.data('changed', true)
    const elecs = eles?.layout(layoutOptions).run();
    cy?.on("add", () => cy.data("changed", true));
    cy?.fit();
    //cy?.layout().run()

    return () => {
      document
        .querySelector("#root")
        ?.removeEventListener("mouseup", cleardragQuestionContentId);
      layoutsContainer.current?.remove();
      plusesContainer.current?.remove();
      crossesContainer.current?.remove();
      gearsContainer.current?.remove();
    };
  }, []);

  return (
    <>
      <Button
        sx={{
          mb: "20px",
          height: "27px",
          color: "#7E2AEA",
          textDecoration: "underline",
          fontSize: "16px",
        }}
        variant="text"
        onClick={() => {
          cyRef.current?.fit();
        }}
      >
        Выровнять
      </Button>
      <CytoscapeComponent
        wheelSensitivity={0.1}
        elements={[]}
        // elements={createGraphElements(tree, quiz)}
        style={{ height: "480px", background: "#F2F3F7" }}
        stylesheet={stylesheet}
        layout={layoutOptions}
        cy={(cy) => {
          cyRef.current = cy;
        }}
        autoungrabify={true}
      />
      {/* <button onClick={() => {
        console.log("NODES____________________________")
        cyRef.current?.elements().forEach((ele: any) => {
          console.log(ele.data())
        })
      }}>nodes</button>
      <button onClick={() => {
        console.log("ELEMENTS____________________________")
        console.log(questions)
      }}>elements</button> */}
    </>
  );
}

function Clear() {
  const quiz = useCurrentQuiz();
  if (quiz) {
    updateRootContentId(quiz.id, "");
  }
  clearRuleForAll();
  return <></>;
}

export default withErrorBoundary(CsComponent, {
  fallback: <Clear />,
  onError: (error, info) => {
    enqueueSnackbar("Дерево порвалось");
    console.log(info);
    console.log(error);
  },
});