import { extend } from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/core/util.mjs';

function normalize(a) {
  if (!(a instanceof Array)) {
    a = [a, a];
  }
  return a;
}
function graphEdgeVisual(ecModel) {
  ecModel.eachSeriesByType('graph', function (seriesModel) {
    var graph = seriesModel.getGraph();
    var edgeData = seriesModel.getEdgeData();
    var symbolType = normalize(seriesModel.get('edgeSymbol'));
    var symbolSize = normalize(seriesModel.get('edgeSymbolSize'));
    // const colorQuery = ['lineStyle', 'color'] as const;
    // const opacityQuery = ['lineStyle', 'opacity'] as const;
    edgeData.setVisual('fromSymbol', symbolType && symbolType[0]);
    edgeData.setVisual('toSymbol', symbolType && symbolType[1]);
    edgeData.setVisual('fromSymbolSize', symbolSize && symbolSize[0]);
    edgeData.setVisual('toSymbolSize', symbolSize && symbolSize[1]);
    edgeData.setVisual('style', seriesModel.getModel('lineStyle').getLineStyle());
    edgeData.each(function (idx) {
      var itemModel = edgeData.getItemModel(idx);
      var edge = graph.getEdgeByIndex(idx);
      var symbolType = normalize(itemModel.getShallow('symbol', true));
      var symbolSize = normalize(itemModel.getShallow('symbolSize', true));
      // Edge visual must after node visual
      var style = itemModel.getModel('lineStyle').getLineStyle();
      var existsStyle = edgeData.ensureUniqueItemVisual(idx, 'style');
      extend(existsStyle, style);
      switch (existsStyle.stroke) {
        case 'source':
          {
            var nodeStyle = edge.node1.getVisual('style');
            existsStyle.stroke = nodeStyle && nodeStyle.fill;
            break;
          }
        case 'target':
          {
            var nodeStyle = edge.node2.getVisual('style');
            existsStyle.stroke = nodeStyle && nodeStyle.fill;
            break;
          }
      }
      symbolType[0] && edge.setVisual('fromSymbol', symbolType[0]);
      symbolType[1] && edge.setVisual('toSymbol', symbolType[1]);
      symbolSize[0] && edge.setVisual('fromSymbolSize', symbolSize[0]);
      symbolSize[1] && edge.setVisual('toSymbolSize', symbolSize[1]);
    });
  });
}

export { graphEdgeVisual as default };
