import { useRecoilValue } from 'recoil'
import { canvasState, fontFamilyState, fontSizeState } from '@/store/canvasAtom'
import { QLine } from '@/components/fabric/QLine'

export const useLine = () => {
  const canvas = useRecoilValue(canvasState)
  const fontSize = useRecoilValue(fontSizeState)
  const fontFamily = useRecoilValue(fontFamilyState)

  const addLine = (points = [], options) => {
    const line = new QLine(points, {
      ...options,
      fontSize: fontSize,
      fontFamily: fontFamily,
    })

    if (line.length === 0) {
      return null
    }

    canvas?.add(line)
    return line
  }

  const hideLine = (line) => {
    line.set({
      visible: false,
    })
    canvas
      ?.getObjects()
      .find((obj) => obj.parent === line)
      .set({
        visible: false,
      })
    canvas?.renderAll()
  }

  const showLine = (line) => {
    line.set({
      visible: true,
    })
    canvas
      ?.getObjects()
      .find((obj) => obj.parent === line)
      .set({
        visible: true,
      })
    canvas?.renderAll()
  }

  const removeLine = (line) => {
    removeLineText(line)
    canvas?.remove(line)
    canvas?.renderAll()
  }

  const removeLineText = (line) => {
    canvas?.remove(canvas?.getObjects().find((obj) => obj.parent === line))
  }

  const getLengthByLine = (line) => {
    const scaleX = line.scaleX
    const scaleY = line.scaleY
    const x1 = line.left
    const y1 = line.top
    const x2 = line.left + line.width * scaleX
    const y2 = line.top + line.height * scaleY
    const dx = x2 - x1
    const dy = y2 - y1

    return Number(Math.sqrt(dx * dx + dy * dy).toFixed(1)) * 10
  }

  return {
    addLine,
    removeLine,
    hideLine,
    showLine,
  }
}