"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.simplifyPolyline = exports.removeRedundantPoint = exports.removeFrom = exports.reconstructPath = exports.pathFinder = exports.mergeBBox = exports.isSegmentsIntersected = exports.isSegmentCrossingBBox = exports.isPointOutsideBBox = exports.isHorizontalPort = exports.isBending = exports.isBBoxesOverlapping = exports.heuristicCostEstimate = exports.getSimplePolyline = exports.getPolylinePoints = exports.getPointsFromBBox = exports.getPathWithBorderRadiusByPolyline = exports.getNeighborPoints = exports.getExpandedBBoxPoint = exports.getExpandedBBox = exports.getBorderRadiusPoints = exports.getBBoxYCrossPoints = exports.getBBoxXCrossPoints = exports.getBBoxFromPoints = exports.getBBoxFromPoint = exports.getBBoxCrossPointsByPoint = exports.filterConnectPoints = exports.distance = exports._costByPoints = exports.SortedArray = void 0;
var getBBoxFromPoint = exports.getBBoxFromPoint = function getBBoxFromPoint(point) {
  var x = point.x,
    y = point.y;
  return {
    x: x,
    y: y,
    centerX: x,
    centerY: y,
    minX: x,
    minY: y,
    maxX: x,
    maxY: y,
    height: 0,
    width: 0
  };
};
var getBBoxFromPoints = exports.getBBoxFromPoints = function getBBoxFromPoints(points) {
  if (points === void 0) {
    points = [];
  }
  var xs = [];
  var ys = [];
  points.forEach(function (p) {
    xs.push(p.x);
    ys.push(p.y);
  });
  var minX = Math.min.apply(Math, xs);
  var maxX = Math.max.apply(Math, xs);
  var minY = Math.min.apply(Math, ys);
  var maxY = Math.max.apply(Math, ys);
  return {
    centerX: (minX + maxX) / 2,
    centerY: (minY + maxY) / 2,
    maxX: maxX,
    maxY: maxY,
    minX: minX,
    minY: minY,
    height: maxY - minY,
    width: maxX - minX
  };
};
var isBBoxesOverlapping = exports.isBBoxesOverlapping = function isBBoxesOverlapping(b1, b2) {
  return Math.abs(b1.centerX - b2.centerX) * 2 < b1.width + b2.width && Math.abs(b1.centerY - b2.centerY) * 2 < b1.height + b2.height;
};
var filterConnectPoints = exports.filterConnectPoints = function filterConnectPoints(points) {
  // pre-process: remove duplicated points
  var result = [];
  var map = {};
  var pointsLength = points.length;
  for (var i = pointsLength - 1; i >= 0; i--) {
    var p = points[i];
    p.id = "".concat(p.x, "|||").concat(p.y);
    if (!map[p.id]) {
      map[p.id] = p;
      result.push(p);
    }
  }
  return result;
};
var simplifyPolyline = exports.simplifyPolyline = function simplifyPolyline(points) {
  return filterConnectPoints(points);
};
var getSimplePolyline = exports.getSimplePolyline = function getSimplePolyline(sPoint, tPoint) {
  return [sPoint, {
    x: sPoint.x,
    y: tPoint.y
  }, tPoint];
};
var getExpandedBBox = exports.getExpandedBBox = function getExpandedBBox(bbox, offset) {
  if (bbox.width || bbox.height) {
    return {
      centerX: bbox.centerX,
      centerY: bbox.centerY,
      minX: bbox.minX - offset,
      minY: bbox.minY - offset,
      maxX: bbox.maxX + offset,
      maxY: bbox.maxY + offset,
      height: bbox.height + 2 * offset,
      width: bbox.width + 2 * offset
    };
  }
  // when it is a point
  return bbox;
};
var isHorizontalPort = exports.isHorizontalPort = function isHorizontalPort(port, bbox) {
  var dx = Math.abs(port.x - bbox.centerX);
  var dy = Math.abs(port.y - bbox.centerY);
  if (dx === 0 && dy === 0) return 0;
  return dx / bbox.width > dy / bbox.height;
};
var getExpandedBBoxPoint = exports.getExpandedBBoxPoint = function getExpandedBBoxPoint(bbox,
// 将原来节点 bbox 扩展了 offset 后的 bbox，且被 gridSize 格式化
point,
// 被 gridSize 格式化后的位置（anchorPoint）
anotherPoint) {
  var isHorizontal = isHorizontalPort(point, bbox);
  if (isHorizontal === 0) {
    // 说明锚点是节点中心，linkCenter: true。需要根据两个节点的相对关系决定方向
    var x = bbox.centerX;
    var y = bbox.centerY;
    if (anotherPoint.y < point.y) {
      // 另一端在左上/右上方时，总是从上方走
      y = bbox.minY;
    } else if (anotherPoint.x > point.x) {
      // 另一端在右下方，往右边走
      x = bbox.maxX;
    } else if (anotherPoint.x < point.x) {
      // 另一端在左下方，往左边走
      x = bbox.minX;
    } else if (anotherPoint.x === point.x) {
      // 另一段在正下方，往下走
      y = bbox.maxY;
    }
    return {
      x: x,
      y: y
    };
  }
  if (isHorizontal) {
    return {
      x: point.x > bbox.centerX ? bbox.maxX : bbox.minX,
      y: point.y
    };
  }
  return {
    x: point.x,
    y: point.y > bbox.centerY ? bbox.maxY : bbox.minY
  };
};
/**
 *
 * @param b1
 * @param b2
 */
var mergeBBox = exports.mergeBBox = function mergeBBox(b1, b2) {
  var minX = Math.min(b1.minX, b2.minX);
  var minY = Math.min(b1.minY, b2.minY);
  var maxX = Math.max(b1.maxX, b2.maxX);
  var maxY = Math.max(b1.maxY, b2.maxY);
  return {
    centerX: (minX + maxX) / 2,
    centerY: (minY + maxY) / 2,
    minX: minX,
    minY: minY,
    maxX: maxX,
    maxY: maxY,
    height: maxY - minY,
    width: maxX - minX
  };
};
var getPointsFromBBox = exports.getPointsFromBBox = function getPointsFromBBox(bbox) {
  // anticlockwise
  return [{
    x: bbox.minX,
    y: bbox.minY
  }, {
    x: bbox.maxX,
    y: bbox.minY
  }, {
    x: bbox.maxX,
    y: bbox.maxY
  }, {
    x: bbox.minX,
    y: bbox.maxY
  }];
};
var isPointOutsideBBox = exports.isPointOutsideBBox = function isPointOutsideBBox(point, bbox) {
  var x = point.x,
    y = point.y;
  return x < bbox.minX || x > bbox.maxX || y < bbox.minY || y > bbox.maxY;
};
var getBBoxXCrossPoints = exports.getBBoxXCrossPoints = function getBBoxXCrossPoints(bbox, x) {
  if (x < bbox.minX || x > bbox.maxX) {
    return [];
  }
  return [{
    x: x,
    y: bbox.minY
  }, {
    x: x,
    y: bbox.maxY
  }];
};
var getBBoxYCrossPoints = exports.getBBoxYCrossPoints = function getBBoxYCrossPoints(bbox, y) {
  if (y < bbox.minY || y > bbox.maxY) {
    return [];
  }
  return [{
    x: bbox.minX,
    y: y
  }, {
    x: bbox.maxX,
    y: y
  }];
};
var getBBoxCrossPointsByPoint = exports.getBBoxCrossPointsByPoint = function getBBoxCrossPointsByPoint(bbox, point) {
  return getBBoxXCrossPoints(bbox, point.x).concat(getBBoxYCrossPoints(bbox, point.y));
};
/**
 * 曼哈顿距离
 */
var distance = exports.distance = function distance(p1, p2) {
  return Math.abs(p1.x - p2.x) + Math.abs(p1.y - p2.y);
};
/**
 * 如果 points 中的一个节点 x 与 p 相等，则消耗 -2。y 同
 * 即优先选择和 points 在同一水平线 / 垂直线上的点
 */
// eslint-disable-next-line @typescript-eslint/naming-convention
var _costByPoints = exports._costByPoints = function _costByPoints(p, points) {
  var offset = -2;
  var result = 0;
  points.forEach(function (point) {
    if (point) {
      if (p.x === point.x) {
        result += offset;
      }
      if (p.y === point.y) {
        result += offset;
      }
    }
  });
  return result;
};
/**
 * ps 经过 p 到 pt 的距离，减去其他路过节点造成的消耗
 */
var heuristicCostEstimate = exports.heuristicCostEstimate = function heuristicCostEstimate(p, ps, pt, source, target) {
  return distance(p, ps) + distance(p, pt) + _costByPoints(p, [ps, pt, source, target]);
};
var _reconstructPath = exports.reconstructPath = function reconstructPath(pathPoints, pointById, cameFrom, currentId, iterator) {
  if (iterator === void 0) {
    iterator = 0;
  }
  pathPoints.unshift(pointById[currentId]);
  if (cameFrom[currentId] && cameFrom[currentId] !== currentId && iterator <= 100) {
    _reconstructPath(pathPoints, pointById, cameFrom, cameFrom[currentId], iterator + 1);
  }
};
/**
 * 从 arr 中删去 item
 */
var removeFrom = exports.removeFrom = function removeFrom(arr, item) {
  var index = arr.indexOf(item);
  if (index > -1) {
    arr.splice(index, 1);
  }
};
var isSegmentsIntersected = exports.isSegmentsIntersected = function isSegmentsIntersected(p0, p1, p2, p3) {
  var v1x = p2.x - p0.x;
  var v1y = p2.y - p0.y;
  var v2x = p3.x - p0.x;
  var v2y = p3.y - p0.y;
  var v3x = p2.x - p1.x;
  var v3y = p2.y - p1.y;
  var v4x = p3.x - p1.x;
  var v4y = p3.y - p1.y;
  var pd1 = v1x * v2y - v1y * v2x;
  var pd2 = v3x * v4y - v3y * v4x;
  var pd3 = v1x * v3y - v1y * v3x;
  var pd4 = v2x * v4y - v2y * v4x;
  return pd1 * pd2 <= 0 && pd3 * pd4 <= 0;
};
var isSegmentCrossingBBox = exports.isSegmentCrossingBBox = function isSegmentCrossingBBox(p1, p2, bbox) {
  if (bbox.width || bbox.height) {
    var _a = getPointsFromBBox(bbox),
      pa = _a[0],
      pb = _a[1],
      pc = _a[2],
      pd = _a[3];
    return isSegmentsIntersected(p1, p2, pa, pb) || isSegmentsIntersected(p1, p2, pa, pd) || isSegmentsIntersected(p1, p2, pb, pc) || isSegmentsIntersected(p1, p2, pc, pd);
  }
  return false;
};
/**
 * 在 points 中找到满足 x 或 y 和 point 的 x 或 y 相等，且与 point 连线不经过 bbox1 与 bbox2 的点
 */
var getNeighborPoints = exports.getNeighborPoints = function getNeighborPoints(points, point, bbox1, bbox2) {
  var neighbors = [];
  points.forEach(function (p) {
    if (p === point) return;
    if (p.x === point.x || p.y === point.y) {
      if (isSegmentCrossingBBox(p, point, bbox1) || isSegmentCrossingBBox(p, point, bbox2)) return;
      neighbors.push(p);
    }
  });
  return filterConnectPoints(neighbors);
};
/**
 * sorted array ascendly
 * add new item to proper index when calling add
 */
var SortedArray = exports.SortedArray = /** @class */function () {
  function SortedArray() {
    this.arr = [];
    this.map = {};
    this.arr = [];
    this.map = {};
  }
  SortedArray.prototype._innerAdd = function (item, length) {
    var idxRange = [0, length - 1];
    while (idxRange[1] - idxRange[0] > 1) {
      var midIdx = Math.floor((idxRange[0] + idxRange[1]) / 2);
      if (this.arr[midIdx].value > item.value) {
        idxRange[1] = midIdx;
      } else if (this.arr[midIdx].value < item.value) {
        idxRange[0] = midIdx;
      } else {
        this.arr.splice(midIdx, 0, item);
        this.map[item.id] = true;
        return;
      }
    }
    this.arr.splice(idxRange[1], 0, item);
    this.map[item.id] = true;
  };
  SortedArray.prototype.add = function (item) {
    // 已经存在，先移除
    delete this.map[item.id];
    var length = this.arr.length;
    if (!length) {
      this.arr.push(item);
      this.map[item.id] = true;
      return;
    }
    // 比最后一个大，加入尾部
    if (this.arr[length - 1].value < item.value) {
      this.arr.push(item);
      this.map[item.id] = true;
      return;
    }
    this._innerAdd(item, length);
  };
  // only remove from the map to avoid cost
  // clear the invalid (not in the map) item when calling minId(true)
  SortedArray.prototype.remove = function (id) {
    if (!this.map[id]) return;
    delete this.map[id];
  };
  SortedArray.prototype._clearAndGetMinId = function () {
    var res;
    for (var i = this.arr.length - 1; i >= 0; i--) {
      if (this.map[this.arr[i].id]) res = this.arr[i].id;else this.arr.splice(i, 1);
    }
    return res;
  };
  SortedArray.prototype._findFirstId = function () {
    while (this.arr.length) {
      var first = this.arr.shift();
      if (this.map[first.id]) return first.id;
    }
  };
  SortedArray.prototype.minId = function (clear) {
    if (clear) {
      return this._clearAndGetMinId();
    } else {
      return this._findFirstId();
    }
  };
  return SortedArray;
}();
var pathFinder = exports.pathFinder = function pathFinder(points, start, goal, sBBox, tBBox, os, ot) {
  var _a;
  // A-Star Algorithm
  var closedSet = [];
  var openSet = (_a = {}, _a[start.id] = start, _a);
  var cameFrom = {};
  var gScore = {}; // all default values are Infinity
  var fScore = {}; // all default values are Infinity
  gScore[start.id] = 0;
  fScore[start.id] = heuristicCostEstimate(start, goal, start);
  var sortedOpenSet = new SortedArray();
  sortedOpenSet.add({
    id: start.id,
    value: fScore[start.id]
  });
  var pointById = {};
  points.forEach(function (p) {
    pointById[p.id] = p;
  });
  var current;
  while (Object.keys(openSet).length) {
    var minId = sortedOpenSet.minId(false);
    if (minId) {
      current = openSet[minId];
    } else {
      break;
    }
    // 若 openSet 中 fScore 最小的点就是终点
    if (current === goal) {
      // ending condition
      var pathPoints = [];
      _reconstructPath(pathPoints, pointById, cameFrom, goal.id);
      return pathPoints;
    }
    delete openSet[current.id];
    sortedOpenSet.remove(current.id);
    closedSet.push(current);
    var neighborPoints = getNeighborPoints(points, current, sBBox, tBBox);
    var iterateNeighbors = function iterateNeighbors(items) {
      items.forEach(function (neighbor) {
        if (closedSet.indexOf(neighbor) !== -1) {
          return;
        }
        var neighborId = neighbor.id;
        if (!openSet[neighborId]) {
          openSet[neighborId] = neighbor;
        }
        var tentativeGScore = fScore[current.id] + distance(current, neighbor); // + distance(neighbor, goal);
        if (gScore[neighborId] && tentativeGScore >= gScore[neighborId]) {
          sortedOpenSet.add({
            id: neighborId,
            value: fScore[neighborId]
          });
          return;
        }
        cameFrom[neighborId] = current.id;
        gScore[neighborId] = tentativeGScore;
        fScore[neighborId] = gScore[neighborId] + heuristicCostEstimate(neighbor, goal, start, os, ot);
        sortedOpenSet.add({
          id: neighborId,
          value: fScore[neighborId]
        });
      });
    };
    iterateNeighbors(neighborPoints);
  }
  // throw new Error('Cannot find path');
  return [start, goal];
};
var isBending = exports.isBending = function isBending(p0, p1, p2) {
  return !(p0.x === p1.x && p1.x === p2.x || p0.y === p1.y && p1.y === p2.y);
};
var getBorderRadiusPoints = exports.getBorderRadiusPoints = function getBorderRadiusPoints(p0, p1, p2, r) {
  var d0 = distance(p0, p1);
  var d1 = distance(p2, p1);
  if (d0 < r) {
    r = d0;
  }
  if (d1 < r) {
    r = d1;
  }
  var ps = {
    x: p1.x - r / d0 * (p1.x - p0.x),
    y: p1.y - r / d0 * (p1.y - p0.y)
  };
  var pt = {
    x: p1.x - r / d1 * (p1.x - p2.x),
    y: p1.y - r / d1 * (p1.y - p2.y)
  };
  return [ps, pt];
};
var getPathWithBorderRadiusByPolyline = exports.getPathWithBorderRadiusByPolyline = function getPathWithBorderRadiusByPolyline(points, borderRadius) {
  var pathSegments = [];
  var startPoint = points[0];
  pathSegments.push("M".concat(startPoint.x, " ").concat(startPoint.y));
  points.forEach(function (p, i) {
    var p1 = points[i + 1];
    var p2 = points[i + 2];
    if (p1 && p2) {
      if (isBending(p, p1, p2)) {
        var _a = getBorderRadiusPoints(p, p1, p2, borderRadius),
          ps = _a[0],
          pt = _a[1];
        pathSegments.push("L".concat(ps.x, " ").concat(ps.y));
        pathSegments.push("Q".concat(p1.x, " ").concat(p1.y, " ").concat(pt.x, " ").concat(pt.y));
        pathSegments.push("L".concat(pt.x, " ").concat(pt.y));
      } else {
        pathSegments.push("L".concat(p1.x, " ").concat(p1.y));
      }
    } else if (p1) {
      pathSegments.push("L".concat(p1.x, " ").concat(p1.y));
    }
  });
  return pathSegments.join('');
};
var getPolylinePoints = exports.getPolylinePoints = function getPolylinePoints(start, end, sNode, tNode, offset) {
  var sBBox, tBBox;
  if (!sNode || !sNode.getType()) {
    sBBox = getBBoxFromPoint(start);
  } else if (sNode.getType() === 'combo') {
    var sKeyShapeBBox = sNode.getKeyShape().getBBox();
    if (sKeyShapeBBox) {
      var _a = sNode.getModel(),
        sx = _a.x,
        sy = _a.y;
      sBBox = {
        x: sx,
        y: sy,
        width: sKeyShapeBBox.width,
        height: sKeyShapeBBox.height,
        minX: sKeyShapeBBox.minX + sx,
        maxX: sKeyShapeBBox.maxX + sx,
        minY: sKeyShapeBBox.minY + sy,
        maxY: sKeyShapeBBox.maxY + sy
      };
      sBBox.centerX = (sBBox.minX + sBBox.maxX) / 2;
      sBBox.centerY = (sBBox.minY + sBBox.maxY) / 2;
    } else {
      sBBox = getBBoxFromPoint(start);
    }
  } else {
    sBBox = sNode && sNode.getBBox();
  }
  if (!tNode || !tNode.getType()) {
    tBBox = getBBoxFromPoint(end);
  } else if (tNode.getType() === 'combo') {
    var tKeyShapeBBox = tNode.getKeyShape().getBBox();
    if (tKeyShapeBBox) {
      var _b = tNode.getModel(),
        tx = _b.x,
        ty = _b.y;
      tBBox = {
        x: tx,
        y: ty,
        width: tKeyShapeBBox.width,
        height: tKeyShapeBBox.height,
        minX: tKeyShapeBBox.minX + tx,
        maxX: tKeyShapeBBox.maxX + tx,
        minY: tKeyShapeBBox.minY + ty,
        maxY: tKeyShapeBBox.maxY + ty
      };
      tBBox.centerX = (tBBox.minX + tBBox.maxX) / 2;
      tBBox.centerY = (tBBox.minY + tBBox.maxY) / 2;
    } else {
      tBBox = getBBoxFromPoint(end);
    }
  } else {
    tBBox = tNode && tNode.getBBox();
  }
  // if (isBBoxesOverlapping(sBBox, tBBox)) {
  //   // source and target nodes are overlapping
  //   return simplifyPolyline(getSimplePolyline(start, end));
  // }
  var sxBBox = getExpandedBBox(sBBox, offset);
  var txBBox = getExpandedBBox(tBBox, offset);
  // if (isBBoxesOverlapping(sxBBox, txBBox)) {
  //   // the expanded bounding boxes of source and target nodes are overlapping
  //   return simplifyPolyline(getSimplePolyline(start, end));
  // }
  var sPoint = getExpandedBBoxPoint(sxBBox, start, end);
  var tPoint = getExpandedBBoxPoint(txBBox, end, start);
  var lineBBox = getBBoxFromPoints([sPoint, tPoint]);
  var sMixBBox = mergeBBox(sxBBox, lineBBox);
  var tMixBBox = mergeBBox(txBBox, lineBBox);
  var connectPoints = [];
  connectPoints = connectPoints.concat(getPointsFromBBox(sMixBBox)).concat(getPointsFromBBox(tMixBBox));
  var centerPoint = {
    x: (start.x + end.x) / 2,
    y: (start.y + end.y) / 2
  };
  [lineBBox, sMixBBox, tMixBBox].forEach(function (bbox) {
    connectPoints = connectPoints.concat(getBBoxCrossPointsByPoint(bbox, centerPoint).filter(function (p) {
      return isPointOutsideBBox(p, sxBBox) && isPointOutsideBBox(p, txBBox);
    }));
  });
  [{
    x: sPoint.x,
    y: tPoint.y
  }, {
    x: tPoint.x,
    y: sPoint.y
  }].forEach(function (p) {
    // impossible!!
    if (isPointOutsideBBox(p, sxBBox) && isPointOutsideBBox(p, txBBox) // &&
    // isPointInsideBBox(p, sMixBBox) && isPointInsideBBox(p, tMixBBox)
    ) {
      connectPoints.push(p);
    }
  });
  connectPoints.unshift(sPoint);
  connectPoints.push(tPoint);
  // filter out dulplicated points in connectPoints
  connectPoints = filterConnectPoints(connectPoints); // , sxBBox, txBBox, outerBBox
  var pathPoints = pathFinder(connectPoints, sPoint, tPoint, sBBox, tBBox, start, end);
  pathPoints.unshift(start);
  pathPoints.push(end);
  return simplifyPolyline(pathPoints);
};
/**
 * 去除连续同 x 不同 y 的中间点；去除连续同 y 不同 x 的中间点
 * @param points 坐标集合 { x: number, y: number, id: string }[]
 * @returns
 */
var removeRedundantPoint = exports.removeRedundantPoint = function removeRedundantPoint(points) {
  if (!(points === null || points === void 0 ? void 0 : points.length)) return points;
  var beginPoint = points[points.length - 1];
  var current = {
    x: beginPoint.x,
    y: beginPoint.y
  };
  var continueSameX = [beginPoint];
  var continueSameY = [beginPoint];
  for (var i = points.length - 2; i >= 0; i--) {
    var point = points[i];
    if (point.x === current.x) {
      continueSameX.push(point);
    } else {
      continueSameX = [point];
      current.x = point.x;
    }
    if (point.y === current.y) {
      continueSameY.push(point);
    } else {
      continueSameY = [point];
      current.y = point.y;
    }
    if (continueSameX.length > 2) {
      var removeIdx = points.indexOf(continueSameX[1]);
      if (removeIdx > -1) points.splice(removeIdx, 1);
      continue;
    }
    if (continueSameY.length > 2) {
      var removeIdx = points.indexOf(continueSameY[1]);
      if (removeIdx > -1) points.splice(removeIdx, 1);
    }
  }
  return points;
};