import { NemiCurve } from './nemiCurve'
import { Position } from './SuperPath2D'

import { Bezier } from 'bezier-js'
import { getAdjustedT } from './bezier'

export const getPointOnCurve = (curve: NemiCurve, percentage: number): Position => {
  switch (curve.type) {
    case 'line': {
      return {
        x: curve.startPoint.x + percentage * (curve.endPoint.x - curve.startPoint.x),
        y: curve.startPoint.y + percentage * (curve.endPoint.y - curve.startPoint.y),
      }
    }
    case 'arc': {
      const angle = curve.startAngle + percentage * curve.radians
      return {
        x: curve.centerPoint.x + Math.cos(angle) * curve.radius,
        y: curve.centerPoint.y + Math.sin(angle) * curve.radius,
      }
    }
    case 'bezier': {
      // Using the functions above in your specific case
      const bezier = new Bezier(curve.startPoint, curve.controlPoint1, curve.controlPoint2, curve.endPoint)

      const pointOnCurve = bezier.get(getAdjustedT(bezier, percentage))
      return {
        x: pointOnCurve.x,
        y: pointOnCurve.y,
      }
    }
  }
}