import { useEffect, useRef, useState } from 'react'
import QRect from '@/components/fabric/QRect'
import QPolygon from '@/components/fabric/QPolygon'
import { getStartIndex, rearrangeArray, findTopTwoIndexesByDistance, getDirection, getCenterPoint } from '@/util/canvas-util'
import { useRecoilState, useSetRecoilState } from 'recoil'
import { fontSizeState, roofState, sortedPolygonArray, wallState } from '@/store/canvasAtom'
import { QLine } from '@/components/fabric/QLine'

export const Mode = {
  DRAW_LINE: 'drawLine', // 기준선 긋기모드
  EDIT: 'edit',
  TEMPLATE: 'template',
  PATTERNA: 'patterna',
  PATTERNB: 'patternb',
  TEXTBOX: 'textbox',
  DRAW_RECT: 'drawRect',
  DEFAULT: 'default',
}

export function useMode() {
  const [mode, setMode] = useState()
  const points = useRef([])
  const historyPoints = useRef([])
  const historyLines = useRef([])
  const [canvas, setCanvas] = useState(null)
  const [zoom, setZoom] = useState(100)
  const [fontSize] = useRecoilState(fontSizeState)
  const [shape, setShape] = useState(0)
  const [sortedArray, setSortedArray] = useRecoilState(sortedPolygonArray)
  const [roof, setRoof] = useRecoilState(roofState)
  const [wall, setWall] = useRecoilState(wallState)

  const addEvent = (mode) => {
    switch (mode) {
      case 'default':
        canvas?.off('mouse:down')
        break
      case 'drawLine':
        drawLineMode()
        break
      case 'edit':
        editMode()
        break
      case 'template':
        templateMode()
        break
      case 'patterna':
        break
      case 'patternb':
        applyTemplateB()
        break
      case 'textbox':
        textboxMode()
        break
      case 'drawRect':
        drawRectMode()
        break
    }
  }

  const changeMode = (canvas, mode) => {
    setMode(mode)
    // mode변경 시 이전 이벤트 제거
    setCanvas(canvas)
    canvas?.off('mouse:down')
    addEvent(mode)
  }

  const editMode = () => {
    canvas?.on('mouse:down', function (options) {
      const pointer = canvas?.getPointer(options.e)
      const circle = new fabric.Circle({
        radius: 1,
        fill: 'transparent', // 원 안을 비웁니다.
        stroke: 'black', // 원 테두리 색상을 검은색으로 설정합니다.
        left: pointer.x,
        top: pointer.y,
        originX: 'center',
        originY: 'center',
        selectable: false,
      })

      historyPoints.current.push(circle)
      points.current.push(circle)
      canvas?.add(circle)

      if (points.current.length === 2) {
        const length = Number(prompt('길이를 입력하세요:'))
        // length 값이 숫자가 아닌 경우
        if (isNaN(length) || length === 0) {
          //마지막 추가 된 points 제거합니다.

          const lastPoint = historyPoints.current[historyPoints.current.length - 1]

          canvas?.remove(lastPoint)

          historyPoints.current.pop()
          points.current.pop()
          return
        }

        if (length) {
          const vector = {
            x: points.current[1].left - points.current[0].left,
            y: points.current[1].top - points.current[0].top,
          }
          const slope = Math.abs(vector.y / vector.x) // 기울기 계산

          let scaledVector
          if (slope >= 1) {
            // 기울기가 1 이상이면 x축 방향으로 그림
            scaledVector = {
              x: 0,
              y: vector.y >= 0 ? Number(length) : -Number(length),
            }
          } else {
            // 기울기가 1 미만이면 y축 방향으로 그림
            scaledVector = {
              x: vector.x >= 0 ? Number(length) : -Number(length),
              y: 0,
            }
          }

          const line = new QLine(
            [points.current[0].left, points.current[0].top, points.current[0].left + scaledVector.x, points.current[0].top + scaledVector.y],
            {
              stroke: 'black',
              strokeWidth: 2,
              selectable: false,
              viewLengthText: true,
              direction: getDirection(points.current[0], points.current[1]),
              fontSize: fontSize,
            },
          )

          pushHistoryLine(line)

          // 라인의 끝에 점을 추가합니다.
          const endPointCircle = new fabric.Circle({
            radius: 1,
            fill: 'transparent', // 원 안을 비웁니다.
            stroke: 'black', // 원 테두리 색상을 검은색으로 설정합니다.
            left: points.current[0].left + scaledVector.x,
            top: points.current[0].top + scaledVector.y,
            originX: 'center',
            originY: 'center',
            selectable: false,
          })

          canvas?.add(endPointCircle)

          historyPoints.current.push(endPointCircle)

          points.current.forEach((point) => {
            canvas?.remove(point)
          })
          points.current = [endPointCircle]
        }
      }

      canvas?.renderAll()
    })
  }

  const pushHistoryLine = (line) => {
    if (historyLines.current.length > 0 && historyLines.current[historyLines.current.length - 1].direction === line.direction) {
      // 같은 방향의 선이 두 번 연속으로 그려지면 이전 선을 제거하고, 새로운 선과 merge한다.

      const lastLine = historyLines.current.pop()
      canvas?.remove(lastLine)

      const mergedLine = new QLine([lastLine.x1, lastLine.y1, line.x2, line.y2], {
        stroke: 'black',
        strokeWidth: 2,
        selectable: false,
        viewLengthText: true,
        direction: lastLine.direction,
        fontSize: fontSize,
      })
      historyLines.current.push(mergedLine)
      canvas?.add(mergedLine)
    } else {
      historyLines.current.push(line)
      canvas?.add(line)
    }
  }

  /**
   * 마우스로 그린 점 기준으로 외벽선을 완성시켜준다.
   * makePolygon 함수에 포함되어있던 내용을 다른 템플릿 적용에서도 사용할수 있도록 함수로 대체
   */
  const drawWallPolygon = () => {
    const firstPoint = historyPoints.current[0]
    const lastPoint = historyPoints.current[historyPoints.current.length - 1]
    historyPoints.current.forEach((point) => {
      canvas?.remove(point)
    })
    drawLineWithLength(lastPoint, firstPoint)
    points.current = []
    historyPoints.current = []

    // handleOuterlines()
    const wall = makePolygon()
    setWall(wall)

    return wall
  }

  const templateMode = () => {
    changeMode(canvas, Mode.EDIT)

    if (historyPoints.current.length >= 4) {
      // handleOuterlinesTest() //외곽선 그리기 테스트
      // drawWallPolygon()
      //아래 내용 drawWallPolygon()으로 대체
      const firstPoint = historyPoints.current[0]
      const lastPoint = historyPoints.current[historyPoints.current.length - 1]
      historyPoints.current.forEach((point) => {
        canvas?.remove(point)
      })
      drawLineWithLength(lastPoint, firstPoint)
      points.current = []
      historyPoints.current = []

      const roof = handleOuterlinesTest()
      const wall = makePolygon()

      roof.setWall(wall)
      setWall(wall)
      roof.drawHelpLine()
    }
  }

  const textboxMode = () => {
    canvas?.on('mouse:down', function (options) {
      if (canvas?.getActiveObject()?.type === 'textbox') return
      const pointer = canvas?.getPointer(options.e)

      const textbox = new fabric.Textbox('텍스트를 입력하세요', {
        left: pointer.x,
        top: pointer.y,
        width: 150, // 텍스트박스의 너비를 설정합니다.
        fontSize: fontSize, // 텍스트의 크기를 설정합니다.
      })

      canvas?.add(textbox)
      canvas?.setActiveObject(textbox) // 생성된 텍스트박스를 활성 객체로 설정합니다.
      canvas?.renderAll()
      // textbox가 active가 풀린 경우 editing mode로 변경
      textbox?.on('editing:exited', function () {
        changeMode(canvas, Mode.EDIT)
      })
    })
  }

  const drawLineMode = () => {
    canvas?.on('mouse:down', function (options) {
      const pointer = canvas?.getPointer(options.e)

      const line = new QLine(
        [pointer.x, 0, pointer.x, canvas.height], // y축에 1자 선을 그립니다.
        {
          stroke: 'black',
          strokeWidth: 2,
          viewLengthText: true,
          selectable: false,
          fontSize: fontSize,
        },
      )

      canvas?.add(line)
      canvas?.renderAll()
    })
  }

  const drawRectMode = () => {
    let rect, isDown, origX, origY
    canvas.on('mouse:down', function (o) {
      isDown = true
      const pointer = canvas.getPointer(o.e)
      origX = pointer.x
      origY = pointer.y
      rect = new fabric.Rect({
        left: origX,
        top: origY,
        originX: 'left',
        originY: 'top',
        width: pointer.x - origX,
        height: pointer.y - origY,
        angle: 0,
        fill: 'transparent',
        stroke: 'black',
        transparentCorners: false,
      })
      canvas.add(rect)
    })

    canvas.on('mouse:move', function (o) {
      if (!isDown) return
      const pointer = canvas.getPointer(o.e)
      if (origX > pointer.x) {
        rect.set({ left: Math.abs(pointer.x) })
      }
      if (origY > pointer.y) {
        rect.set({ top: Math.abs(pointer.y) })
      }

      rect.set({ width: Math.abs(origX - pointer.x) })
      rect.set({ height: Math.abs(origY - pointer.y) })
    })

    canvas.on('mouse:up', function (o) {
      const pointer = canvas.getPointer(o.e)
      const qRect = new QRect({
        left: origX,
        top: origY,
        originX: 'left',
        originY: 'top',
        width: pointer.x - origX,
        height: pointer.y - origY,
        angle: 0,
        viewLengthText: true,
        fill: 'transparent',
        stroke: 'black',
        transparentCorners: false,
        fontSize: fontSize,
      })
      canvas.remove(rect)
      canvas.add(qRect)
      isDown = false
    })
  }

  /**
   * 두 점을 연결하는 선과 길이를 그립니다.
   * a : 시작점, b : 끝점
   */
  const drawLineWithLength = (a, b) => {
    const line = new QLine([a.left, a.top, b.left, b.top], {
      stroke: 'black',
      strokeWidth: 2,
      selectable: false,
      viewLengthText: true,
      direction: getDirection(a, b),
      fontSize: fontSize,
    })
    pushHistoryLine(line)

    canvas?.renderAll()
  }

  const makePolygon = (otherLines) => {
    // 캔버스에서 모든 라인 객체를 찾습니다.
    const lines = otherLines || historyLines.current

    if (!otherLines) {
      //외각선 기준
      const topIndex = findTopTwoIndexesByDistance(sortedArray) //배열중에 큰 2값을 가져옴 TODO: 나중에는 인자로 받아서 다각으로 수정 해야됨

      //일단 배열 6개 짜리 기준의 선 번호
      if (topIndex[0] === 4) {
        if (topIndex[1] === 5) {
          //1번
          setShape(1)
        }
      } else if (topIndex[0] === 1) {
        //4번
        if (topIndex[1] === 2) {
          setShape(4)
        }
      } else if (topIndex[0] === 0) {
        if (topIndex[1] === 1) {
          //2번
          setShape(2)
        } else if (topIndex[1] === 5) {
          setShape(3)
        }
      }

      historyLines.current = []
    }

    // 각 라인의 시작점과 끝점을 사용하여 다각형의 점 배열을 생성합니다.
    const points = lines.map((line) => ({ x: line.x1, y: line.y1 }))

    // 모든 라인 객체를 캔버스에서 제거합니다.
    lines.forEach((line) => {
      canvas?.remove(line)
    })

    // 점 배열을 사용하여 새로운 다각형 객체를 생성합니다.
    const polygon = new QPolygon(
      points,
      {
        stroke: 'black',
        fill: 'transparent',
        viewLengthText: true,
        selectable: true,
        fontSize: fontSize,
      },
      canvas,
    )

    // 새로운 다각형 객체를 캔버스에 추가합니다.
    canvas.add(polygon)

    // 캔버스를 다시 그립니다.
    if (!otherLines) {
      // polygon.fillCell()
      canvas.renderAll()
      polygon.setViewLengthText(false)
      setMode(Mode.DEFAULT)
    }

    return polygon
  }

  /**
   * 해당 캔버스를 비운다.
   */
  const handleClear = () => {
    canvas?.clear()
    points.current = []
    historyPoints.current = []
    historyLines.current = []
  }

  const zoomIn = () => {
    canvas?.setZoom(canvas.getZoom() + 0.1)
    setZoom(Math.round(zoom + 10))
  }

  const zoomOut = () => {
    canvas?.setZoom(canvas.getZoom() - 0.1)
    setZoom(Math.ceil(zoom - 10))
  }

  const handleOuterlines = () => {
    const newOuterlines = []
    for (let i = 0; i < historyLines.current.length; i++) {
      const next = historyLines.current[i + 1]
      const prev = historyLines.current[i - 1] ?? historyLines.current[historyLines.current.length - 1]
      if (next) {
        if (next.direction === 'right') {
          // 다름 라인이 오른쪽으로 이동
          if (historyLines.current[i].direction === 'top') {
            if (prev.direction !== 'right') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 + 50,
                y1: historyLines.current[i].y1 + 50,
                x2: historyLines.current[i].x2 + 50,
                y2: historyLines.current[i].y2 + 50,
              })
            }
          } else {
            // bottom
            if (prev?.direction !== 'right') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 - 50,
                y1: historyLines.current[i].y1 + 50,
                x2: historyLines.current[i].x2 - 50,
                y2: historyLines.current[i].y2 + 50,
              })
            }
          }
        } else if (next.direction === 'left') {
          if (historyLines.current[i].direction === 'top') {
            if (prev?.direction !== 'left') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 + 50,
                y1: historyLines.current[i].y1 - 50,
                x2: historyLines.current[i].x2 + 50,
                y2: historyLines.current[i].y2 - 50,
              })
            }
          } else {
            // bottom
            if (prev?.direction !== 'left') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 - 50,
                y1: historyLines.current[i].y1 - 50,
                x2: historyLines.current[i].x2 - 50,
                y2: historyLines.current[i].y2 - 50,
              })
            }
          }
        } else if (next.direction === 'top') {
          if (historyLines.current[i].direction === 'right') {
            if (prev?.direction !== 'top') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 + 50,
                y1: historyLines.current[i].y1 + 50,
                x2: historyLines.current[i].x2 + 50,
                y2: historyLines.current[i].y2 + 50,
              })
            }
          } else {
            // left
            if (prev?.direction !== 'top') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 + 50,
                y1: historyLines.current[i].y1 - 50,
                x2: historyLines.current[i].x2 + 50,
                y2: historyLines.current[i].y2 - 50,
              })
            }
          }
        } else if (next.direction === 'bottom') {
          if (historyLines.current[i].direction === 'right') {
            if (prev?.direction !== 'bottom') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 - 50,
                y1: historyLines.current[i].y1 + 50,
                x2: historyLines.current[i].x2 - 50,
                y2: historyLines.current[i].y2 + 50,
              })
            }
          } else {
            // left
            if (prev.direction !== 'bottom') {
              if (historyLines.current.length === 4) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 6) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 + 50,
                  y1: historyLines.current[i].y1 - 50,
                  x2: historyLines.current[i].x2 - 50,
                  y2: historyLines.current[i].y2 - 50,
                })
              } else if (historyLines.current.length === 8) {
                newOuterlines.push({
                  x1: historyLines.current[i].x1 - 50,
                  y1: historyLines.current[i].y1 + 50,
                  x2: historyLines.current[i].x2 + 50,
                  y2: historyLines.current[i].y2 + 50,
                })
              }
            } else {
              newOuterlines.push({
                x1: historyLines.current[i].x1 - 50,
                y1: historyLines.current[i].y1 - 50,
                x2: historyLines.current[i].x2 + 50,
                y2: historyLines.current[i].y2 - 50,
              })
            }
          }
        }
      } else {
        const tmp = newOuterlines[newOuterlines.length - 1]
        newOuterlines.push({
          x1: tmp.x2,
          y1: tmp.y2,
          x2: newOuterlines[0].x1,
          y2: newOuterlines[0].y1,
        })
      }
    }

    makePolygon(newOuterlines)
  }

  /**
   *벽 지붕 외곽선 생성
   */
  const handleOuterlinesTest = (offset = 71) => {
    var offsetPoints = []

    const sortedIndex = getStartIndex(historyLines.current)
    let tmpArraySorted = rearrangeArray(historyLines.current, sortedIndex)

    if (tmpArraySorted[0].direction === 'right') {
      //시계방향
      tmpArraySorted = tmpArraySorted.reverse() //그럼 배열을 거꾸로 만들어서 무조건 반시계방향으로 배열 보정
    }

    setSortedArray(tmpArraySorted) //recoil에 넣음

    const points = tmpArraySorted.map((line) => ({
      x: line.x1,
      y: line.y1,
    }))

    for (var i = 0; i < points.length; i++) {
      var prev = points[(i - 1 + points.length) % points.length]
      var current = points[i]
      var next = points[(i + 1) % points.length]

      // 두 벡터 계산 (prev -> current, current -> next)
      var vector1 = { x: current.x - prev.x, y: current.y - prev.y }
      var vector2 = { x: next.x - current.x, y: next.y - current.y }

      // 벡터의 길이 계산
      var length1 = Math.sqrt(vector1.x * vector1.x + vector1.y * vector1.y)
      var length2 = Math.sqrt(vector2.x * vector2.x + vector2.y * vector2.y)

      // 벡터를 단위 벡터로 정규화
      var unitVector1 = { x: vector1.x / length1, y: vector1.y / length1 }
      var unitVector2 = { x: vector2.x / length2, y: vector2.y / length2 }

      // 법선 벡터 계산 (왼쪽 방향)
      var normal1 = { x: -unitVector1.y, y: unitVector1.x }
      var normal2 = { x: -unitVector2.y, y: unitVector2.x }

      // 법선 벡터 평균 계산
      var averageNormal = {
        x: (normal1.x + normal2.x) / 2,
        y: (normal1.y + normal2.y) / 2,
      }

      // 평균 법선 벡터를 단위 벡터로 정규화
      var lengthNormal = Math.sqrt(averageNormal.x * averageNormal.x + averageNormal.y * averageNormal.y)
      var unitNormal = {
        x: averageNormal.x / lengthNormal,
        y: averageNormal.y / lengthNormal,
      }

      // 오프셋 적용
      var offsetPoint = {
        x1: current.x + unitNormal.x * offset,
        y1: current.y + unitNormal.y * offset,
      }

      offsetPoints.push(offsetPoint)
    }

    const roof = makePolygon(offsetPoints)
    setRoof(roof)

    return roof
  }

  /**
   *벽 지붕 외곽선 생성 polygon을 입력받아 만들기
   */
  const handleOuterlinesTest2 = (polygon, offset = 71) => {
    const offsetPoints = []
    const sortedIndex = getStartIndex(polygon.lines)
    let tmpArraySorted = rearrangeArray(polygon.lines, sortedIndex)

    if (tmpArraySorted[0].direction === 'right') {
      //시계방향
      tmpArraySorted = tmpArraySorted.reverse() //그럼 배열을 거꾸로 만들어서 무조건 반시계방향으로 배열 보정
    }

    setSortedArray(tmpArraySorted) //recoil에 넣음

    const points = tmpArraySorted.map((line) => ({
      x: line.x1,
      y: line.y1,
    }))

    for (let i = 0; i < points.length; i++) {
      const prev = points[(i - 1 + points.length) % points.length]
      const current = points[i]
      const next = points[(i + 1) % points.length]

      // 두 벡터 계산 (prev -> current, current -> next)
      const vector1 = { x: current.x - prev.x, y: current.y - prev.y }
      const vector2 = { x: next.x - current.x, y: next.y - current.y }

      // 벡터의 길이 계산
      const length1 = Math.sqrt(vector1.x * vector1.x + vector1.y * vector1.y)
      const length2 = Math.sqrt(vector2.x * vector2.x + vector2.y * vector2.y)

      // 벡터를 단위 벡터로 정규화
      const unitVector1 = { x: vector1.x / length1, y: vector1.y / length1 }
      const unitVector2 = { x: vector2.x / length2, y: vector2.y / length2 }

      // 법선 벡터 계산 (왼쪽 방향)
      const normal1 = { x: -unitVector1.y, y: unitVector1.x }
      const normal2 = { x: -unitVector2.y, y: unitVector2.x }

      // 법선 벡터 평균 계산
      const averageNormal = {
        x: (normal1.x + normal2.x) / 2,
        y: (normal1.y + normal2.y) / 2,
      }

      // 평균 법선 벡터를 단위 벡터로 정규화
      const lengthNormal = Math.sqrt(averageNormal.x * averageNormal.x + averageNormal.y * averageNormal.y)
      const unitNormal = {
        x: averageNormal.x / lengthNormal,
        y: averageNormal.y / lengthNormal,
      }

      // 오프셋 적용
      const offsetPoint = {
        x1: current.x + unitNormal.x * offset,
        y1: current.y + unitNormal.y * offset,
      }

      offsetPoints.push(offsetPoint)
    }

    const roof = makePolygon(offsetPoints)
    roof.setWall(polygon)
    setRoof(roof)
    roof.drawHelpLine()
  }

  const togglePolygonLine = (obj) => {
    const rtnLines = []
    if (obj.type === 'QPolygon') {
      const points = obj.getCurrentPoints()
      points.forEach((point, index) => {
        const nextPoint = points[(index + 1) % points.length] // 마지막 점이면 첫 번째 점으로 연결
        const line = new QLine([point.x, point.y, nextPoint.x, nextPoint.y], {
          stroke: 'black',
          strokeWidth: 2,
          selectable: false,
          fontSize: fontSize, // fontSize는 필요에 따라 조정
          parent: obj,
        })
        obj.visible = false
        canvas.add(line)
        rtnLines.push(line)
      })

      canvas.renderAll()
    }
    if (obj.type === 'QLine') {
      const parent = obj.parent
      canvas
        ?.getObjects()
        .filter((obj) => obj.parent === parent)
        .forEach((obj) => {
          rtnLines.push(obj)
          canvas.remove(obj)
        })

      parent.visible = true
      canvas.renderAll()
    }
    return rtnLines
  }

  /**
   * 템플릿 B 적용
   */
  const applyTemplateB = () => {
    changeMode(canvas, Mode.EDIT)
    const polygon = drawWallPolygon()
    const params = {
      eaves: 50,
      edge: 20,
      polygon,
    }
    handleInnerLineColor(polygon)
    // handleOuterLineTemplateB(params)
    console.log(polygon.lines.length)
    if (polygon.lines.length === 4) {
      handleTemplateBRect(params)
    } else if (polygon.length === 6) {
      handleTemplateB(params)
    }
  }

  /**
   * 4각형일때 계산 로직
   * @param {obj} params
   */
  const handleTemplateBRect = (params) => {
    const { eaves, edge, polygon } = params
    const centerLinePoint = {}
    const centerDashLinePoint = {}

    const qlineOpt = {
      stroke: 'blue',
      strokeWidth: 2,
      selectable: false,
      fontSize: fontSize,
    }
    const qlineOptDash = {
      stroke: 'black',
      strokeWidth: 2,
      strokeDashArray: [5, 5],
      selectable: false,
      fontSize: fontSize,
    }
    const qlineOptDashWithoutLength = {
      ...qlineOptDash,
      isActiveLengthText: false,
    }

    polygon.lines.forEach((line, index) => {
      let outline
      if (index === 0) {
        outline = new QLine([line.x1 - edge, line.y1 - eaves, line.x2 - edge, line.y2 + eaves], qlineOpt)
        const centeredPoint = getCenterPoint(line.y1, line.y2)
        centerLinePoint.x1 = line.x1 - edge
        centerLinePoint.y1 = centeredPoint
        centerLinePoint.y2 = centeredPoint
        centerDashLinePoint.y1 = line.y1 - eaves
        centerDashLinePoint.y2 = line.y2 + eaves
      } else if (index === 1) {
        outline = new QLine([line.x1 - edge, line.y1 + eaves, line.x2 + edge, line.y2 + eaves], qlineOpt)
        const centeredPoint = getCenterPoint(line.x1, line.x2)
        centerLinePoint.x2 = line.x2 + edge
        centerDashLinePoint.x1 = centeredPoint
        centerDashLinePoint.x2 = centeredPoint
      } else if (index === 2) {
        outline = new QLine([line.x1 + edge, line.y1 + eaves, line.x2 + edge, line.y2 - eaves], qlineOpt)
      } else if (index === 3) {
        outline = new QLine([line.x1 + edge, line.y1 - eaves, line.x2 - edge, line.y2 - eaves], qlineOpt)
      }
      canvas.add(outline)
    })
    const centerLine = new QLine([centerLinePoint.x1, centerLinePoint.y1, centerLinePoint.x2, centerLinePoint.y2], qlineOpt)
    canvas.add(centerLine)
    const centerDashLine1 = new QLine(
      [centerDashLinePoint.x1, centerDashLinePoint.y1, centerDashLinePoint.x2, getCenterPoint(centerDashLinePoint.y1, centerDashLinePoint.y2)],
      qlineOptDashWithoutLength,
    )
    canvas.add(centerDashLine1)
    const centerDashLine2 = new QLine(
      [centerDashLinePoint.x1, getCenterPoint(centerDashLinePoint.y1, centerDashLinePoint.y2), centerDashLinePoint.x2, centerDashLinePoint.y2],
      qlineOptDashWithoutLength,
    )
    canvas.add(centerDashLine2)

    canvas.renderAll()
  }

  /**
   * 6각형일때 계산 로직
   * @param {obj} params
   */
  const handleTemplateB = (params) => {
    const { eaves, edge, polygon } = params
    // 가장 긴 라인이 첫번째일때
    let shapeType = 0
    console.log(polygon)
    const odd = polygon.lines.filter((line, index) => index % 2 === 0)
    const even = polygon.lines.filter((line, index) => index % 2 !== 0)
    const rerangeOdd = chgLineDirectionVertical(odd)
    const rerangeEven = chgLineDirectionHorizontal(even)
    // 가장 긴 라인이 첫번째인지 판단
    chkLengthIndex({ arr: odd, type: 'L' }) !== 0 ? (shapeType = 1) : null
    // 가장 짧은 라인의 인덱스 반환
    const shortIndex = chkLengthIndex({ arr: odd, type: 'S' })

    const centralLinePoint = {
      x1: 0,
      y1: 0,
      x2: 0,
      y2: 0,
    }
    const centralSubLinePoint = {
      x1: 0,
      y1: 0,
      x2: 0,
      y2: 0,
    }
    const centralDashLinePoint = {
      x1: 0,
      y1: 0,
      x2: 0,
      y2: 0,
    }
    const centralSubDashLinePoint = {
      x1: 0,
      y1: 0,
      x2: 0,
      y2: 0,
    }
    const qlineOpt = {
      stroke: 'blue',
      strokeWidth: 2,
      selectable: false,
      fontSize: fontSize,
    }
    const qlineOptDash = {
      stroke: 'black',
      strokeWidth: 2,
      strokeDashArray: [5, 5],
      selectable: false,
      fontSize: fontSize,
    }

    rerangeOdd.forEach((line, index) => {
      const centeredPoint = getCenterPoint(line.y1, line.y2)
      let points1 = []
      let points2 = []
      if (polygon.shape === 2 || polygon.shape === 3) {
        if (index === 0) {
          points1 = [line.x1 - edge, line.y1 - eaves, line.x1 - edge, centeredPoint]
          points2 = [line.x2 - edge, centeredPoint, line.x2 - edge, line.y2 + eaves]
          centralLinePoint.x1 = line.x1 - edge
          centralLinePoint.y1 = centeredPoint
          centralLinePoint.y2 = centeredPoint
          centralDashLinePoint.y1 = line.y1 - eaves
          centralDashLinePoint.y2 = line.y2 + eaves
        } else if (index === 1) {
          if (polygon.shape === 2) {
            points1 = [line.x1 + edge, line.y1 - eaves, line.x1 + edge, centeredPoint]
            points2 = [line.x1 + edge, centeredPoint, line.x2 + edge, line.y2 + eaves]
            centralSubLinePoint.x2 = line.x1 + edge
            centralSubLinePoint.y2 = centeredPoint
          } else {
            points1 = [line.x1 + edge, getCenterPoint(rerangeOdd[2].y1, rerangeOdd[2].y2), line.x2 + edge, line.y2 + eaves]
            points2 = [line.x1, getCenterPoint(rerangeOdd[2].y1, rerangeOdd[2].y2), line.x1, line.y1 + eaves]
            centralLinePoint.x2 = line.x1 + edge
            centralSubLinePoint.y1 = getCenterPoint(rerangeOdd[2].y1, rerangeOdd[2].y2)
            centralSubLinePoint.y2 = getCenterPoint(rerangeOdd[2].y1, rerangeOdd[2].y2)
          }
        } else if (index === 2) {
          if (polygon.shape === 2) {
            points1 = [line.x1 + edge, line.y1 - eaves, line.x2 + edge, centralSubLinePoint.y2]
            points2 = [line.x2, line.y2 - eaves, line.x2, centralSubLinePoint.y2]
          } else {
            points1 = [line.x1 + edge, line.y1 - eaves, line.x2 + edge, centeredPoint]
            points2 = [line.x2 + edge, centeredPoint, line.x2 + edge, line.y2 + eaves]
          }
        }
      } else {
        if (index === 0) {
          points1 = [line.x1 - edge, line.y1 - eaves, line.x2 - edge, line.y2 + eaves]
          centralSubLinePoint.x1 = line.x1 - edge
          centralSubLinePoint.y1 = getCenterPoint(line.y1, line.y2)
          centralSubLinePoint.y2 = getCenterPoint(line.y1, line.y2)
        } else if (index === 1) {
          if (polygon.shape === 1) {
            points1 = [line.x1 - edge, centralSubLinePoint.y1, line.x2 - edge, line.y2 + eaves]
            points2 = [line.x1, centralSubLinePoint.y1, line.x1, line.y1 + eaves]
            centralLinePoint.x1 = line.x1 - edge
            centralSubLinePoint.x2 = line.x2
          } else {
            points1 = [line.x1 + edge, line.y1 - eaves, line.x2 + edge, centeredPoint]
            points2 = [line.x2 + edge, centeredPoint, line.x2 + edge, line.y2 + eaves]
            centralLinePoint.x2 = line.x1 + edge
            centralLinePoint.y1 = centeredPoint
            centralLinePoint.y2 = centeredPoint
            centralDashLinePoint.y1 = line.y1 - eaves
            centralDashLinePoint.y2 = line.y2 + eaves
          }
        } else {
          if (polygon.shape === 1) {
            points1 = [line.x1 + edge, line.y1 - eaves, line.x1 + edge, centeredPoint]
            points2 = [line.x2 + edge, centeredPoint, line.x2 + edge, line.y2 + eaves]
            centralLinePoint.x2 = line.x1 + edge
            centralLinePoint.y1 = centeredPoint
            centralLinePoint.y2 = centeredPoint
            centralDashLinePoint.y1 = line.y1 - eaves
            centralDashLinePoint.y2 = line.y2 + eaves
          } else {
            points1 = [line.x1 - edge, line.y1 - eaves, line.x2 - edge, centralSubLinePoint.y1]
            points2 = [line.x2, line.y2 - eaves, line.x2, centralSubLinePoint.y2]
            centralLinePoint.x1 = line.x1 - edge
            centralSubLinePoint.x2 = line.x2
          }
        }
      }

      if (points1.length > 0) {
        const subLine1 = new QLine(points1, qlineOpt)
        canvas.add(subLine1)
      }
      if (points2.length > 0) {
        const subLine2 = new QLine(points2, qlineOpt)
        canvas.add(subLine2)
      }
    })

    rerangeEven.forEach((line, index) => {
      let points = []
      if (polygon.shape === 2 || polygon.shape === 3) {
        if (index === 0) {
          points = [line.x1 - edge, line.y1 + eaves, line.x2 + edge, line.y2 + eaves]
          if (polygon.shape === 3) {
            centralDashLinePoint.x1 = getCenterPoint(line.x1, line.x2)
            centralDashLinePoint.x2 = getCenterPoint(line.x1, line.x2)
          }
        } else if (index === 2) {
          points = [line.x1 - edge, line.y1 - eaves, line.x2 + edge, line.y2 - eaves]
          if (polygon.shape === 2) {
            centralDashLinePoint.x1 = getCenterPoint(line.x1, line.x2)
            centralDashLinePoint.x2 = getCenterPoint(line.x1, line.x2)
            centralLinePoint.x2 = line.x2 + edge
          }
        } else {
          if (polygon.shape === 2) {
            const subLines = [
              [line.x1, line.y1 - eaves, line.x2 + edge, line.y2 - eaves],
              [line.x1, centralSubLinePoint.y2, centralSubLinePoint.x2, centralSubLinePoint.y2],
            ]
            subLines.forEach((sLine, index) => {
              const subLine = new QLine(sLine, qlineOpt)
              canvas.add(subLine)
            })
            centralSubDashLinePoint.x1 = getCenterPoint(line.x1, line.x2 + edge)
            centralSubDashLinePoint.x2 = getCenterPoint(line.x1, line.x2 + edge)
            centralSubDashLinePoint.y1 = line.y1 - eaves
            centralSubDashLinePoint.y2 = centralSubLinePoint.y2
          } else {
            const subLines = [
              [line.x1, line.y1 + eaves, line.x2 + edge, line.y2 + eaves],
              [line.x1, centralSubLinePoint.y1, line.x2 + edge, centralSubLinePoint.y2],
            ]
            subLines.forEach((sLine, index) => {
              const subLine = new QLine(sLine, qlineOpt)
              canvas.add(subLine)
            })
            centralSubDashLinePoint.x1 = getCenterPoint(line.x1, line.x2 + edge)
            centralSubDashLinePoint.x2 = getCenterPoint(line.x1, line.x2 + edge)
            centralSubDashLinePoint.y1 = centralSubLinePoint.y1
            centralSubDashLinePoint.y2 = line.y2 + eaves
          }
        }
      } else {
        if (index === 0) {
          if (polygon.shape === 1) {
            const subLines = [
              [centralSubLinePoint.x1, centralSubLinePoint.y1, centralSubLinePoint.x2, centralSubLinePoint.y2],
              [line.x1 - edge, line.y1 + eaves, line.x2, line.y1 + eaves],
            ]
            subLines.forEach((sLine, index) => {
              const subLine = new QLine(sLine, qlineOpt)
              canvas.add(subLine)
            })
            centralSubDashLinePoint.x1 = getCenterPoint(line.x1 - edge, line.x2)
            centralSubDashLinePoint.x2 = getCenterPoint(line.x1 - edge, line.x2)
            centralSubDashLinePoint.y1 = centralSubLinePoint.y1
            centralSubDashLinePoint.y2 = line.y2 + eaves
          } else {
            points = [line.x1 - edge, line.y1 + eaves, line.x2 + edge, line.y2 + eaves]
          }
        } else if (index === 1) {
          if (polygon.shape === 1) {
            points = [line.x1 - edge, line.y1 + eaves, line.x2 + edge, line.y2 + eaves]
            centralDashLinePoint.x1 = getCenterPoint(line.x1, line.x2)
            centralDashLinePoint.x2 = getCenterPoint(line.x1, line.x2)
          } else {
            points = [line.x1 - edge, line.y1 - eaves, line.x2 + edge, line.y2 - eaves]
            centralDashLinePoint.x1 = getCenterPoint(line.x1, line.x2)
            centralDashLinePoint.x2 = getCenterPoint(line.x1, line.x2)
          }
        } else {
          if (polygon.shape === 1) {
            points = [line.x1 - edge, line.y1 - eaves, line.x2 + edge, line.y2 - eaves]
          } else {
            const subLines = [
              [centralSubLinePoint.x1, centralSubLinePoint.y1, centralSubLinePoint.x2, centralSubLinePoint.y2],
              [line.x1 - edge, line.y1 - eaves, line.x2, line.y1 - eaves],
            ]
            subLines.forEach((sLine, index) => {
              const subLine = new QLine(sLine, qlineOpt)
              canvas.add(subLine)
            })
            centralSubDashLinePoint.x1 = getCenterPoint(line.x1 - edge, line.x2)
            centralSubDashLinePoint.x2 = getCenterPoint(line.x1 - edge, line.x2)
            centralSubDashLinePoint.y1 = line.y1 - eaves
            centralSubDashLinePoint.y2 = centralSubLinePoint.y2
          }
        }
      }

      if (points.length > 0) {
        const subLine = new QLine(points, qlineOpt)
        canvas.add(subLine)
      }
    })

    const centralLine = new QLine([centralLinePoint.x1, centralLinePoint.y1, centralLinePoint.x2, centralLinePoint.y2], qlineOpt)
    canvas.add(centralLine)
    const centralDashLine1 = new QLine([centralDashLinePoint.x1, centralDashLinePoint.y1, centralDashLinePoint.x1, centralLinePoint.y2], qlineOptDash)
    canvas.add(centralDashLine1)
    const centralDashLine2 = new QLine([centralDashLine1.x2, centralDashLine1.y2, centralDashLinePoint.x2, centralDashLinePoint.y2], qlineOptDash)
    canvas.add(centralDashLine2)
    const centralSubDashLine = new QLine(
      [centralSubDashLinePoint.x1, centralSubDashLinePoint.y1, centralSubDashLinePoint.x2, centralSubDashLinePoint.y2],
      qlineOptDash,
    )
    canvas.add(centralSubDashLine)

    canvas.renderAll()
  }

  /**
   * 세로 방샹 라인의 좌표 순서를 위에서 아래로 변경
   * @param {array} arr
   * @returns
   */
  const chgLineDirectionVertical = (arr) => {
    const newArr = arr.map((line, index) => {
      if (line.direction !== 'bottom') {
        const newPoint = { x1: line.x2, y1: line.y2, x2: line.x1, y2: line.y1 }
        return newPoint
      } else {
        return line
      }
    })
    return newArr
  }

  /**
   * 가로 방향 라인의 좌표 순서를 왼쪽에서 오른쪽으로 변경
   * @param {array} arr
   * @returns
   */
  const chgLineDirectionHorizontal = (arr) => {
    const newArr = arr.map((line, index) => {
      if (line.direction !== 'right') {
        const newPoint = { x1: line.x2, y1: line.y2, x2: line.x1, y2: line.y1 }
        return newPoint
      } else {
        return line
      }
    })
    return newArr
  }

  /**
   * 라인 배열 중 가장 긴 라인의 인덱스를 반환합니다.
   */
  const chkLengthIndex = (params) => {
    const { arr, type } = params
    let maxIndex = 0
    for (let i = 1; i < arr.length; i++) {
      if (type === 'L') {
        if (arr[maxIndex].length < arr[i].length) {
          maxIndex = i
        }
      } else {
        if (arr[maxIndex].length > arr[i].length) {
          maxIndex = i
        }
      }
    }
    return maxIndex
  }

  /**
   * 외벽선 색깔을 변경
   * @param {array} polygon
   */
  const handleInnerLineColor = (polygon) => {
    polygon.lines.forEach((line, index) => {
      if (index % 2 === 0) {
        line.set('stroke', 'rgb(0, 220, 221)')
      } else {
        line.set('stroke', 'rgb(0, 224, 61)')
      }

      const overLine = new QLine([line.x1, line.y1, line.x2, line.y2], {
        stroke: line.stroke,
        strokeWidth: 2,
        selectable: false,
        fontSize: fontSize,
        isActiveLengthText: false,
      })
      canvas.add(overLine)
    })
    canvas.renderAll()
  }

  const handleOuterLineTemplateB = (params) => {
    const { eaves, edge, polygon } = params
    polygon.points.forEach((point, index) => {
      let x2 = index === polygon.points.length - 1 ? polygon.points[0].x : polygon.points[index + 1].x
      let y2 = index === polygon.points.length - 1 ? polygon.points[0].y : polygon.points[index + 1].y

      let x1 = point.x
      let y1 = point.y
      if (index % 2 === 0) {
        if (polygon.lines[index].direction === 'bottom') {
          y1 = y1 - eaves
          y2 = y2 + eaves
          x1 = x1 - edge
          x2 = x2 - edge
        } else {
          y1 = y1 + eaves
          y2 = y2 - eaves
          x1 = x1 + edge
          x2 = x2 + edge
        }
      } else {
        if (polygon.lines[index].direction === 'right') {
          x1 = x1 - edge
          x2 = x2 + edge
          y1 = y1 + eaves
          y2 = y2 + eaves
        } else {
          x1 = x1 + edge
          x2 = x2 - edge
          y1 = y1 - eaves
          y2 = y2 - eaves
        }
      }

      switch (polygon.shape) {
        case 1:
          if (index === 0) {
            const subLine = new QLine(
              [
                point.x - edge,
                polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2,
                polygon.points[2].x,
                polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2,
              ],
              {
                stroke: 'blue',
                strokeWidth: 2,
                selectable: false,
                fontSize: fontSize,
              },
            )
            canvas.add(subLine)
          }
          if (index === 1) {
            x2 = x2 - edge
            const subLine = new QLine([x2, y2, x2, polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2], {
              stroke: 'blue',
              strokeWidth: 2,
              selectable: false,
              fontSize: fontSize,
            })
            canvas.add(subLine)
          }
          if (index === 2) {
            y1 = point.y - (polygon.points[1].y - polygon.points[0].y) / 2
            const centeredPoint = getCenterPoint(polygon.points[1].x, point.x)
            const subLine = new QLine(
              [centeredPoint, point.y + eaves, centeredPoint, polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2],
              {
                stroke: 'black',
                strokeWidth: 2,
                strokeDashArray: [5, 5],
                selectable: false,
                fontSize: fontSize,
              },
            )
            canvas.add(subLine)
          }
          if (index === 3) {
            const centeredPoint = getCenterPoint(point.x, polygon.points[4].x)
            const subLine = new QLine([centeredPoint, point.y + eaves, centeredPoint, polygon.points[5].y - eaves], {
              stroke: 'black',
              strokeWidth: 2,
              strokeDashArray: [5, 5],
              selectable: false,
              fontSize: fontSize,
            })
            canvas.add(subLine)
          }
          if (index === 5) {
            const centeredPoint = getCenterPoint(point.y, polygon.points[4].y)
            const subLine = new QLine([point.x + edge, centeredPoint, polygon.points[2].x - edge, centeredPoint], {
              stroke: 'blue',
              strokeWidth: 2,
              selectable: false,
              fontSize: fontSize,
            })
            canvas.add(subLine)
          }
          break
        case 2:
          const centerPoint = polygon.points[3].y + (polygon.points[2].y - polygon.points[3].y) / 2
          if (index === 0) {
            const subLine = new QLine(
              [
                point.x - egde,
                polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2,
                polygon.points[5].x + egde,
                polygon.points[0].y + (polygon.points[1].y - polygon.points[0].y) / 2,
              ],
              {
                stroke: 'blue',
                strokeWidth: 2,
                selectable: false,
                fontSize: fontSize,
              },
            )
            canvas.add(subLine)
          }
          if (index === 3) {
            x2 = x2 + egde

            const subLine = new QLine([x2, y2, x2, centerPoint], {
              stroke: 'blue',
              strokeWidth: 2,
              selectable: false,
              fontSize: fontSize,
            })
            canvas.add(subLine)
          }
          if (index === 4) {
            y1 = point.y + (polygon.points[index - 2].y - polygon.points[index - 1].y) / 2

            const subLine = new QLine([point.x, centerPoint, polygon.points[2].x + 20, centerPoint], {
              stroke: 'blue',
              strokeWidth: 2,
              selectable: false,
              fontSize: fontSize,
            })

            const subVerticalLine = new QLine(
              [
                getCenterPoint(point.x, polygon.points[2].x + egde),
                polygon.points[3].y - eaves,
                getCenterPoint(point.x, polygon.points[2].x + egde),
                centerPoint,
              ],
              {
                stroke: 'black',
                strokeWidth: 2,
                strokeDashArray: [5, 5],
                selectable: false,
                fontSize: fontSize,
              },
            )
            canvas.add(subVerticalLine)
          }

          if (index === 5) {
            const centeredPoint = getCenterPoint(polygon.points[0].x, polygon.points[5].x)
            const verticalSubLine = new QLine([centeredPoint, polygon.points[0].y - eaves, centeredPoint, polygon.points[1].y + eaves], {
              stroke: 'black',
              strokeWidth: 2,
              strokeDashArray: [5, 5],
              selectable: false,
              fontSize: fontSize,
            })

            canvas.add(verticalSubLine)
          }

          break
        case 3:
          break
        case 4:
          break
        default:
          break
      }

      const line = new QLine([x1, y1, x2, y2], {
        stroke: 'blue',
        strokeWidth: 2,
        selectable: false,
        fontSize: fontSize,
      })
      canvas.add(line)
    })
    canvas.renderAll()
  }

  return {
    mode,
    changeMode,
    setCanvas,
    handleClear,
    zoomIn,
    zoomOut,
    zoom,
    togglePolygonLine,
    handleOuterlinesTest2,
  }
}