import { updateOpenedModalSettingsId } from "@root/uiTools/actions";

import type { MutableRefObject } from "react";
import type {
  PresetLayoutOptions,
  LayoutEventObject,
  NodeSingular,
  AbstractEventObject,
} from "cytoscape";

type usePopperArgs = {
  layoutsContainer: MutableRefObject<HTMLDivElement | null>;
  plusesContainer: MutableRefObject<HTMLDivElement | null>;
  crossesContainer: MutableRefObject<HTMLDivElement | null>;
  gearsContainer: MutableRefObject<HTMLDivElement | null>;
  setModalQuestionParentContentId: (id: string) => void;
  setOpenedModalQuestions: (open: boolean) => void;
  setStartCreate: (id: string) => void;
  setStartRemove: (id: string) => void;
};

type PopperItem = {
  id: () => string;
};

type Modifier = {
  name: string;
  options: unknown;
};

type PopperConfig = {
  popper: {
    placement: string;
    modifiers?: Modifier[];
  };
  content: (items: PopperItem[]) => void;
};

type Popper = {
  update: () => Promise<void>;
  setOptions: (modifiers: { modifiers?: Modifier[] }) => void;
};

type NodeSingularWithPopper = NodeSingular & {
  popper: (config: PopperConfig) => Popper;
};

export const usePopper = ({
  layoutsContainer,
  plusesContainer,
  crossesContainer,
  gearsContainer,
  setModalQuestionParentContentId,
  setOpenedModalQuestions,
  setStartCreate,
  setStartRemove,
}: usePopperArgs) => {
  const removeButtons = (id: string) => {
    layoutsContainer.current
      ?.querySelector(`.popper-layout[data-id='${id}']`)
      ?.remove();
    plusesContainer.current
      ?.querySelector(`.popper-plus[data-id='${id}']`)
      ?.remove();
    crossesContainer.current
      ?.querySelector(`.popper-cross[data-id='${id}']`)
      ?.remove();
    gearsContainer.current
      ?.querySelector(`.popper-gear[data-id='${id}']`)
      ?.remove();
  };

  const initialPopperIcons = ({ cy }: LayoutEventObject) => {
    const container =
      (document.body.querySelector(
        ".__________cytoscape_container"
      ) as HTMLDivElement) || null;

    if (!container) {
      return;
    }

    container.style.overflow = "hidden";

    if (!plusesContainer.current) {
      plusesContainer.current = document.createElement("div");
      plusesContainer.current.setAttribute("id", "popper-pluses");
      container.append(plusesContainer.current);
    }
    if (!crossesContainer.current) {
      crossesContainer.current = document.createElement("div");
      crossesContainer.current.setAttribute("id", "popper-crosses");
      container.append(crossesContainer.current);
    }
    if (!gearsContainer.current) {
      gearsContainer.current = document.createElement("div");
      gearsContainer.current.setAttribute("id", "popper-gears");
      container.append(gearsContainer.current);
    }
    if (!layoutsContainer.current) {
      layoutsContainer.current = document.createElement("div");
      layoutsContainer.current.setAttribute("id", "popper-layouts");
      container.append(layoutsContainer.current);
    }

    const ext = cy.extent();
    const nodesInView = cy.nodes().filter((n) => {
      const bb = n.boundingBox();
      return (
        bb.x2 > ext.x1 && bb.x1 < ext.x2 && bb.y2 > ext.y1 && bb.y1 < ext.y2
      );
    });

    nodesInView.toArray()?.forEach((item) => {
      const node = item as NodeSingularWithPopper;

      const layoutsPopper = node.popper({
        popper: {
          placement: "left",
          modifiers: [{ name: "flip", options: { boundary: node } }],
        },
        content: ([item]) => {
          const itemId = item.id();
          const itemElement = layoutsContainer.current?.querySelector(
            `.popper-layout[data-id='${itemId}']`
          );
          if (itemElement) {
            return itemElement;
          }

          const layoutElement = document.createElement("div");
          layoutElement.style.zIndex = "0";
          layoutElement.classList.add("popper-layout");
          layoutElement.setAttribute("data-id", item.id());
          layoutElement.addEventListener("mouseup", () => {
            //Узнаём грани, идущие от этой ноды
            setModalQuestionParentContentId(item.id());
            setOpenedModalQuestions(true);
          });
          layoutsContainer.current?.appendChild(layoutElement);

          return layoutElement;
        },
      });

      const plusesPopper = node.popper({
        popper: {
          placement: "right",
          modifiers: [{ name: "flip", options: { boundary: node } }],
        },
        content: ([item]) => {
          const itemId = item.id();
          const itemElement = plusesContainer.current?.querySelector(
            `.popper-plus[data-id='${itemId}']`
          );
          if (itemElement) {
            return itemElement;
          }

          const plusElement = document.createElement("div");
          plusElement.classList.add("popper-plus");
          plusElement.setAttribute("data-id", item.id());
          plusElement.style.zIndex = "1";
          plusElement.addEventListener("mouseup", () => {
            setStartCreate(node.id());
          });

          plusesContainer.current?.appendChild(plusElement);

          return plusElement;
        },
      });

      const crossesPopper = node.popper({
        popper: {
          placement: "top-end",
          modifiers: [{ name: "flip", options: { boundary: node } }],
        },
        content: ([item]) => {
          const itemId = item.id();
          const itemElement = crossesContainer.current?.querySelector(
            `.popper-cross[data-id='${itemId}']`
          );
          if (itemElement) {
            return itemElement;
          }

          const crossElement = document.createElement("div");
          crossElement.classList.add("popper-cross");
          crossElement.setAttribute("data-id", item.id());
          crossElement.style.zIndex = "2";
          crossesContainer.current?.appendChild(crossElement);
          crossElement.addEventListener("mouseup", () => {
            setStartRemove(node.id());
          });

          return crossElement;
        },
      });
      let gearsPopper: Popper | null = null;
      if (node.data().root !== true) {
        gearsPopper = node.popper({
          popper: {
            placement: "left",
            modifiers: [{ name: "flip", options: { boundary: node } }],
          },
          content: ([item]) => {
            const itemId = item.id();

            const itemElement = gearsContainer.current?.querySelector(
              `.popper-gear[data-id='${itemId}']`
            );
            if (itemElement) {
              return itemElement;
            }

            const gearElement = document.createElement("div");
            gearElement.classList.add("popper-gear");
            gearElement.setAttribute("data-id", item.id());
            gearElement.style.zIndex = "1";
            gearsContainer.current?.appendChild(gearElement);
            gearElement.addEventListener("mouseup", () => {
              updateOpenedModalSettingsId(item.id());
            });

            return gearElement;
          },
        });
      }
      const update = async () => {
        await plusesPopper.update();
        await crossesPopper.update();
        await gearsPopper?.update();
        await layoutsPopper.update();
      };

      const onZoom = (event: AbstractEventObject) => {
        const zoom = event.cy.zoom();

        //update();

        crossesPopper.setOptions({
          modifiers: [
            { name: "flip", options: { boundary: node } },
            { name: "offset", options: { offset: [-5 * zoom, -30 * zoom] } },
          ],
        });

        layoutsPopper.setOptions({
          modifiers: [
            { name: "flip", options: { boundary: node } },
            { name: "offset", options: { offset: [0, -130 * zoom] } },
          ],
        });
        plusesPopper.setOptions({
          modifiers: [
            { name: "flip", options: { boundary: node } },
            { name: "offset", options: { offset: [0, 0 * zoom] } },
          ],
        });
        gearsPopper?.setOptions({
          modifiers: [
            { name: "flip", options: { boundary: node } },
            { name: "offset", options: { offset: [0, 0] } },
          ],
        });

        layoutsContainer.current
          ?.querySelectorAll("#popper-layouts > .popper-layout")
          .forEach((item) => {
            const element = item as HTMLDivElement;
            element.style.width = `${130 * zoom}px`;
            element.style.height = `${130 * zoom}px`;
          });

        plusesContainer.current
          ?.querySelectorAll("#popper-pluses > .popper-plus")
          .forEach((item) => {
            const element = item as HTMLDivElement;
            element.style.width = `${40 * zoom}px`;
            element.style.height = `${40 * zoom}px`;
            element.style.fontSize = `${40 * zoom}px`;
            element.style.borderRadius = `${6 * zoom}px`;
          });

        crossesContainer.current
          ?.querySelectorAll("#popper-crosses > .popper-cross")
          .forEach((item) => {
            const element = item as HTMLDivElement;
            element.style.width = `${24 * zoom}px`;
            element.style.height = `${24 * zoom}px`;
            element.style.fontSize = `${24 * zoom}px`;
            element.style.borderRadius = `${6 * zoom}px`;
          });

        gearsContainer?.current
          ?.querySelectorAll("#popper-gears > .popper-gear")
          .forEach((item) => {
            const element = item as HTMLDivElement;
            element.style.width = `${60 * zoom}px`;
            element.style.height = `${40 * zoom}px`;
          });
      };

      //node?.on("position", update);
      let pressed = false;
      let hide = false;
      cy?.on("mousedown", () => {
        pressed = true;
      });
      cy?.on("mouseup", () => {
        pressed = false;
        hide = false;

        const gc = gearsContainer.current;
        if (gc) gc.style.display = "block";
        const pc = plusesContainer.current;
        const xc = crossesContainer.current;
        const lc = layoutsContainer.current;
        if (pc) pc.style.display = "block";
        if (xc) xc.style.display = "block";
        if (lc) lc.style.display = "block";
        update();
      });

      cy?.on("mousemove", () => {
        if (pressed && !hide) {
          hide = true;
          const gc = gearsContainer.current;
          if (gc) gc.style.display = "none";
          const pc = plusesContainer.current;
          const xc = crossesContainer.current;
          const lc = layoutsContainer.current;
          if (pc) pc.style.display = "none";
          if (xc) xc.style.display = "none";
          if (lc) lc.style.display = "block";
        }
      });

      cy?.on("zoom render", onZoom);
    });
  };

  const readyLO = (event: LayoutEventObject) => {
    if (event.cy.data("firstNode") === "nonroot") {
      event.cy.data("firstNode", "root");
      event.cy
        .nodes()
        .sort((a, b) => (a.data("root") ? 1 : -1))
        .layout(layoutOptions)
        .run();
    } else {
      event.cy.data("changed", false);
      event.cy.removeData("firstNode");
    }

    //удаляем иконки
    event.cy.nodes().forEach((ele: any) => {
      const data = ele.data();
      data.id && removeButtons(data.id);
    });

    initialPopperIcons(event);
  };

  const layoutOptions: PresetLayoutOptions = {
    name: "preset",

    positions: (node) => {
      if (!node.cy().data("changed")) {
        return node.data("oldPos");
      }
      const id = node.id();
      const incomming = node.cy().edges(`[target="${id}"]`);
      const layer = 0;
      node.removeData("lastChild");

      if (incomming.length === 0) {
        if (node.cy().data("firstNode") === undefined)
          node.cy().data("firstNode", "root");
        node.data("root", true);
        const children = node.cy().edges(`[source="${id}"]`).targets();
        node.data("layer", layer);
        node.data("children", children.length);
        const queue = [];
        children.forEach((n) => {
          queue.push({ task: n, layer: layer + 1 });
        });
        while (queue.length) {
          const task = queue.pop();
          task.task.data("layer", task.layer);
          task.task.removeData("subtreeWidth");
          const children = node
            .cy()
            .edges(`[source="${task.task.id()}"]`)
            .targets();
          task.task.data("children", children.length);
          if (children.length !== 0) {
            children.forEach((n) =>
              queue.push({ task: n, layer: task.layer + 1 })
            );
          }
        }
        queue.push({ parent: node, children: children });
        while (queue.length) {
          const task = queue.pop();
          if (task.children.length === 0) {
            task.parent.data("subtreeWidth", task.parent.height() + 50);
            continue;
          }
          const unprocessed = task?.children.filter((node) => {
            return node.data("subtreeWidth") === undefined;
          });
          if (unprocessed.length !== 0) {
            queue.push(task);
            unprocessed.forEach((t) => {
              queue.push({
                parent: t,
                children: t.cy().edges(`[source="${t.id()}"]`).targets(),
              });
            });
            continue;
          }

          task?.parent.data(
            "subtreeWidth",
            task.children.reduce((p, n) => p + n.data("subtreeWidth"), 0)
          );
        }

        const pos = { x: 0, y: 0 };
        node.data("oldPos", pos);

        queue.push({ task: children, parent: node });
        while (queue.length) {
          const task = queue.pop();
          const oldPos = task.parent.data("oldPos");
          let yoffset = oldPos.y - task.parent.data("subtreeWidth") / 2;
          task.task.forEach((n) => {
            const width = n.data("subtreeWidth");

            n.data("oldPos", {
              x: 250 * n.data("layer"),
              y: yoffset + width / 2,
            });
            yoffset += width;
            queue.push({
              task: n.cy().edges(`[source="${n.id()}"]`).targets(),
              parent: n,
            });
          });
        }
        node.cy().data("changed", false);
        return pos;
      } else {
        const opos = node.data("oldPos");
        if (opos) {
          return opos;
        }
      }
    }, // map of (node id) => (position obj); or function(node){ return somPos; }
    zoom: undefined, // the zoom level to set (prob want fit = false if set)
    pan: 1, // the pan level to set (prob want fit = false if set)
    fit: false, // whether to fit to viewport
    padding: 30, // padding on fit
    animate: false, // whether to transition the node positions
    animationDuration: 500, // duration of animation in ms if enabled
    animationEasing: undefined, // easing of animation if enabled
    animateFilter: function (node, i) {
      return false;
    }, // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
    ready: readyLO, // callback on layoutready
    transform: function (node, position) {
      return position;
    }, // transform a given node position. Useful for changing flow direction in discrete layouts
  };

  return { layoutOptions };
};