var responseObjects = p5WFS_GetFeature();
var object = responseObjects[0];

var nodes = {};
var nodesArray = [];
var links = {};
var linksArray = [];
var instanceTypes = {};
var dragged = false;

const hasTargetArray = node => {
  for (const prop in node)
    if (node[prop].constructor === Array)
      return {array: node[prop], name: prop.split(':').pop().replace(/BI_audit_/, '')};
  return false;
}

const getLinks = (array, expansion) => {

  if (array != undefined && expansion !== undefined) {
    array.forEach(element => {
      const rowObject = hasTargetArray(element);
      if (rowObject) {
        for (let i = rowObject.array.length - 2; i >= 0; i--) {
          const target = hasTargetArray(rowObject.array[i]);
          const source = hasTargetArray(rowObject.array[i + 1]);
          let sourceGroup = source.name;
          let targetGroup = target.name;
          if (expansion && expansion.type) {
            if (sourceGroup === expansion.type)
              sourceGroup = source.array[0][expansion.criteria];
            if (targetGroup === expansion.type)
              targetGroup = target.array[0][expansion.criteria];
          }
          if (!links.hasOwnProperty(sourceGroup))
            links[sourceGroup] = {};
          if (links[sourceGroup].hasOwnProperty(targetGroup)) {
            links[sourceGroup][targetGroup]++;
          } else if (targetGroup) {
            links[sourceGroup][targetGroup] = 1;
          }
        }
      }
    })
  }
};

const getNodes = (array, expansion) => {

    if (array != undefined && expansion !== undefined) {
      array.forEach(element => {
        const rowObject = hasTargetArray(element);
        if (rowObject)
          rowObject.array.forEach(objectElement => {
            const trackNode = hasTargetArray(objectElement);
            if (trackNode) {
              let group = trackNode.name;
              let expanded = false;
              if (expansion && expansion.type && group === expansion.type) {
                group = trackNode.array[0][expansion.criteria];
                expanded = true;
              }
              nodes[group] = {expanded: expanded, type: trackNode.name};
              instanceTypes[trackNode.array[0].ID] = group;
            }
          });
      });
    }

};

const parseNodes = () => {
  for (const node in nodes) {
    if (nodes.hasOwnProperty(node))
      nodesArray.push({name: node, expanded: nodes[node].expanded, type: nodes[node].type});
  }
};

const parseLinks = () => {
  for (const link in links) {
    if (links.hasOwnProperty(link)) {
      for (const target in links[link]) {
        if (links[link].hasOwnProperty(target)) {
          linksArray.push({
            source: link,
            target: target,
            value: links[link][target]
          });
        }
      }
    }
  }
};

const parseGraph = (expansion) => {
  nodes = {};
  links = {};
  nodesArray = [];
  linksArray = [];
  getNodes(responseObjects[0]["default_db__x3A__BI_audit_ENERGA_RUM_KONTRAHENCI_POWIAZANIA_row:BI_audit_ENERGA_RUM_KONTRAHENCI_POWIAZANIA_row"], expansion);
  parseNodes();
  getLinks(responseObjects[0]["default_db__x3A__BI_audit_ENERGA_RUM_KONTRAHENCI_POWIAZANIA_row:BI_audit_ENERGA_RUM_KONTRAHENCI_POWIAZANIA_row"], expansion);
  parseLinks();
  dataModel = data = {
    nodes: nodesArray,
    links: linksArray
  };
};

const redraw = (expansion) => {
  if (dragged)
    return dragged = false;
  parseGraph(expansion);
  draw();
};

parseGraph();