import type { PolylineProps } from 'cadapi'
import { CADFiler, Circle, Polyline, Status, VKnifToolPath, isTargetCurInOrOnSourceCur } from 'cadapi'
import type { Box3 } from 'three'
import { Vector2, Vector3 } from 'three'
import { arrayRemoveDuplicateBySort } from '../ArrayExt'  
import type { Curve2d } from '../base/CAD'
import { Arc2d, Point2d, copyTextToClipboard } from '../base/CAD'
import { CurveWrap } from './Curves2Parts'

// import type { Curve2d } from '../../common/base/CAD'

export class PolylineHelper {
  /** 创建闭合多段线 */
  static create(pts: any[], closeMark = false): Polyline {
    let lined: PolylineProps[] = []
    let count = pts.length
    for (let i = 0; i < count; i++) {
      let p0 = pts[i]

      lined.push({ pt: new Vector2(p0.x, p0.y), bul: p0.bul || 0 })
    }
    let pls = new Polyline(lined)
    pls.CloseMark = closeMark
    return pls
  }

  static createByCurve2d(curs: Curve2d[], closeMark = true): Polyline {
    let lined: PolylineProps[] = []
    for (let cur of curs) {
      let x = cur.StartPoint.m_X
      let y = cur.StartPoint.m_Y
      let bul = 0
      if (cur instanceof Arc2d)
        bul = cur.Bul || 0
      lined.push({ pt: new Vector2(x, y), bul })
    }
    let pls = new Polyline(lined)
    pls.CloseMark = true
    return pls
  }

  static createByPts(pts: any[], buls: number[], closeMark = false): Polyline {
    let plps: PolylineProps[] = []
    let count = pts.length
    for (let i = 0; i < count; i++) {
      let p0 = pts[i]
      plps.push({ pt: new Vector2(p0.x, p0.y), bul: buls[i] })
    }
    let pls = new Polyline(plps)
    pls.CloseMark = closeMark
    return pls
  }

  static getSimplePoints(pts: any[], offset: number): any[] {
    let pl = PolylineHelper.create(pts)
    pl.CloseMark = true
    let cureW = new CurveWrap(pl, offset, true)
    let pts2 = cureW.GetOutsidePoints()
    arrayRemoveDuplicateBySort(pts2, (p1, p2) => (p1.x - p2.x) * (p1.x - p2.x) + (p1.y - p2.y) * (p1.y - p2.y) < 1e-2)
    return pts2
  }

  static createByWidthLength(w: number, l: number): Polyline {
    let plps: PolylineProps[] = []
    plps.push({ pt: new Vector2(0, 0), bul: 0 })
    plps.push({ pt: new Vector2(w, 0), bul: 0 })
    plps.push({ pt: new Vector2(w, l), bul: 0 })
    plps.push({ pt: new Vector2(0, l), bul: 0 })
    let pls = new Polyline(plps)
    pls.CloseMark = true
    return pls
  }

  /** 多段线，添加位置移动 返回新多段线 */
  static moveTo(pl: Polyline, x: number, y: number): Polyline {
    let lindData = pl.LineData
    let pos = pl.Position

    let newPts: PolylineProps[] = []
    for (let p of lindData) {
      let nx = p.pt.x + pos.x + x
      let ny = p.pt.y + pos.y + y
      if (ny < 7.9) {
        // console.log('修边小于 7.9????', ny)
      }
      let bul = p.bul
      newPts.push({ pt: new Vector2(nx, ny), bul })
    }
    let npl = new Polyline(newPts)
    npl.CloseMark = pl.CloseMark
    return npl
  }

  /** 重设 多段线的几点 */
  static resetPosition(pl: Polyline): Polyline {
    let lindData = pl.LineData
    let pos = pl.Position

    let newPts: PolylineProps[] = []
    for (let p of lindData) {
      let nx = p.pt.x + pos.x
      let ny = p.pt.y + pos.y
      let bul = p.bul
      newPts.push({ pt: new Vector2(nx, ny), bul })
    }
    let npl = new Polyline(newPts)
    npl.CloseMark = pl.CloseMark
    return npl
  }

  /** 获得v型刀走刀路径 */o
  static getVModelPoints(pl: Polyline, depth: number, ang: number): any[] {
    // let ang = Math.PI * (0.5 * angle) / 180  ;
    let ps = []
    let bx = pl.Position.x
    let by = pl.Position.y
    if (ang > 0.01) {
      let rt = VKnifToolPath(pl, depth, ang / 2)
      ps = rt.map((t) => { return { x: t.pt.x + bx, y: t.pt.y + by, z: t.pt.z, bul: t.bul, r: 0 } })
    }
    else {
      ps = pl.LineData.map((t) => { return { x: t.pt.x + bx, y: t.pt.y + by, z: 0, bul: t.bul, r: 0 } })
    }
    for (let i = 0; i < ps.length; i++) {
      let p = ps[i]
      if (p.bul == 0)
        continue
      let p2 = (i == ps.length - 1 ? ps[0] : ps[i + 1])
      let r = this.getArcRadius(p.x, p.y, p2.x, p2.y, p.bul)
      p.r = r
    }
    return ps
  }

  static ConverPolyLin2Circle(polyline: Polyline, fuzz = 0.1): Circle | undefined {
    let box = polyline.BoundingBox
    let size = box.getSize(new Vector3())
    if (!this.equaln(size.x, size.y, fuzz))// 盒子四方
      return undefined

    let circleLength = 2 * Math.PI * size.x
    if (!this.equaln(circleLength, polyline.Length, fuzz * 2))
      return undefined

    let circleArea = Math.PI * size.x * size.x
    if (!this.equaln(circleArea, polyline.Area, fuzz * 2))
      return undefined

    let r = size.x// 必须备份(因为我们要复用这个vector变量)
    return new Circle(box.getCenter(size), r)
  }
  // 有问题 
  static getVModelPoints_offset(pl: Polyline, offset: number, depth: number, angle: number) {
    let npl = offset == 0 ? pl : pl.GetOffsetCurves(offset)[0]
    // if(offset != 0)
    // {
    //     ClipboardTest.write2PolyLine(pl,npl);
    // }
    return PolylineHelper.getVModelPoints(npl, depth, angle)
  }

  static getArcRadius(x1: number, y1: number, x2: number, y2: number, bul: number): number {
    let bul2 = Math.abs(bul)
    let d = Math.sqrt((x1 - x2) ** 2 + (y1 - y2) ** 2) / 2
    return 0.5 * d * (1 + bul2 ** 2) / bul2
  }

  // 圆 转 多段线
  static cicleToPolyline(c: Circle): Polyline {
    let arcs = c.GetSplitCurves([0, 0.5])
    let pl = Polyline.FastCombine(arcs)
    return pl
  }

  /** 判断多段线是否 重叠 */
  static isIntersect(pl1: Polyline, pl2: Polyline): boolean {
    let box1 = this.getBox(pl1)
    let box2 = this.getBox(pl2)

    if (!box1.intersectsBox(box2))
      return false // 肯定不相交

    let ipts = pl1.IntersectWith(pl2, 0)
    if (ipts.length === 0) {
      if (pl1.Area > pl2.Area)// 缓存面积
      {
        if (isTargetCurInOrOnSourceCur(pl1, pl2))
          return true // 包含
      }
      else {
        if (isTargetCurInOrOnSourceCur(pl2, pl1))
          return true // 包含
      }
      return false
    }
    else {
      return true // 有交点  一定有交集
    }
  }

  // 多段线 圆弧合并
  static mergeCurve(pl2: Polyline): Polyline {
    const curves = pl2.Explode()
    arrayRemoveDuplicateBySort(curves, (c1, c2) => {
      return c1.Join(c2) === Status.True
    })

    return Polyline.FastCombine(curves)
  }

  /**
   * pl2 包含在pl1 内
   *
   */
  // static isInside(pl1:Polyline,pl2:Polyline):boolean
  // {
  //     let box1 = this.getBox(pl1);
  //     let box2 = this.getBox(pl2);
  //     if (!box1.intersectsBox(box2)) return false; //肯定不相交

  //     let ipts = pl1.IntersectWith(pl2, 0);
  //     if (ipts.length > 0) return true; //有交点  一定有交集
  // }

  /**
   * 两片板的干涉检查
   *
   * @param pl1
   * @param pls1_inner
   * @param pls1_model
   * @param pl2
   * @param pls2_inner
   * @param pls2_model
   * @returns
   */
  static isOverLap(pl1: Polyline, pls1_inner: Polyline[], pls1_model: Polyline[], pl2: Polyline, pls2_inner: Polyline[], pls2_model: Polyline[]) {
    // 是否干涉， 被包含在造型洞，不算干涉
    let isOverlap = this.boxIsOverlap(pl1, pls1_inner, pl2, pls2_inner)

    if (isOverlap)
      return true

    // 造型 ，2v 刀路 是否干涉
    for (let pl1_model of pls1_model) {
      if (pl1_model.IntersectWith(pl2, 0).length > 0)
        return true
      for (let pl2_inner of pls2_inner) {
        if (pl1_model.IntersectWith(pl2_inner, 0).length > 0)
          return true
      }
    }

    for (let pl2_model of pls2_model) {
      if (pl2_model.IntersectWith(pl1, 0).length > 0)
        return true
      for (let pl1_inner of pls1_inner) {
        if (pl2_model.IntersectWith(pl1_inner, 0).length > 0)
          return true
      }
    }

    return false
  }

  private static boxIsOverlap(pl1: Polyline, pls1_inner: Polyline[], pl2: Polyline, pls2_inner: Polyline[]) {
    let box1 = this.getBox(pl1)
    let box2 = this.getBox(pl2)

    if (!box1.intersectsBox(box2))
      return false // 肯定不相交

    let ipts = pl1.IntersectWith(pl2, 0)
    if (ipts.length > 0)
      return true // 有交点  一定有交集

    if (pl1.Area > pl2.Area)// 缓存面积
    {
      if (isTargetCurInOrOnSourceCur(pl1, pl2)) // pl1包含 pl2
      {
        for (let mpl of pls1_inner) // 如果pl1有造型洞包含pl2， 则表示不干涉，返回false

        {
          if (isTargetCurInOrOnSourceCur(mpl, pl2) == true)
            return false
        }

        return true
      }
    }
    else {
      if (isTargetCurInOrOnSourceCur(pl2, pl1)) // pl2包含 pl1
      {
        for (let mpl of pls2_inner) // 如果pl2有造型洞包含pl1， 则表示不干涉，返回false

        {
          if (isTargetCurInOrOnSourceCur(mpl, pl1) == true)
            return false
        }

        return true
      }
    }

    return false
  }

  /** 判断 点是否在多段线内 */
  static isPointInPolyline(pl1: Polyline, x: number, y: number): boolean {
    return pl1.PtInCurve(new Vector3(x, y, 0))
  }

  static getBox(pl1: Polyline): Box3 {
    if (!pl1.box_tp)
      pl1.box_tp = pl1.BoundingBox

    return pl1.box_tp as Box3
  }

  static getArea(pl1: Polyline): number {
    if (!pl1.area_tp)
      pl1.area_tp = pl1.Area

    return pl1.area_tp as number
  }

  static getPath(pl: Polyline): Path2D {
    let path = new Path2D()
    let p0 = pl.LineData[0].pt
    path.moveTo(p0.x, p0.y)

    for (let i = 0; i < pl.LineData.length; i++) {
      let p0 = pl.LineData[i].pt
      let p1 = (i == pl.LineData.length - 1) ? pl.LineData[0].pt : pl.LineData[i + 1].pt
      let bul = pl.LineData[i].bul
      if (bul == 0) {
        path.lineTo(p1.x, p1.y)
      }
      else {
        let arc = new Arc2d(new Point2d(p0.x, p0.y), new Point2d(p1.x, p1.y), bul)
        path.arc(arc.m_Center.m_X, arc.m_Center.m_Y, arc.m_Radius, arc.m_StartAngle, arc.m_EndAngle, bul < 0)
      }
    }
    path.closePath()
    return path
  }

  static equaln(v1: number, v2: number, fuzz = 1e-5) {
    return Math.abs(v1 - v2) <= fuzz
  }

  static toClipboard(en: Polyline | any) {
    let f = new CADFiler()
    f.Write(1)// 实体个数
    f.WriteObject(en)

    copyTextToClipboard(f.ToString())
  }

  static getStrPLs(ens: any[]) {
    if (ens.length == 0)
      return ''
    let f = new CADFiler()
    f.Write(ens.length)// 实体个数
    for (let en of ens)
      f.WriteObject(en)

    return f.ToString()
  }
}