define(["chroma-js", "virtual-dom", "filters/genericnode"],
  function (Chroma, V, Filter) {

    return function (config, filterManager) {
      var self = this;
      var scale = Chroma.scale("YlGnBu").mode("lab");

      var statusTable = document.createElement("table");
      statusTable.classList.add("proportion");

      var fwTable = document.createElement("table");
      fwTable.classList.add("proportion");

      var hwTable = document.createElement("table");
      hwTable.classList.add("proportion");

      var geoTable = document.createElement("table");
      geoTable.classList.add("proportion");

      var autoTable = document.createElement("table");
      autoTable.classList.add("proportion");

      var siteTable = document.createElement("table");
      siteTable.classList.add("proportion");

      function showStatGlobal(o) {
        return showStat(o);
      }

      function count(nodes, key, f) {
        var dict = {};

        nodes.forEach(function (d) {
          var v = dictGet(d, key.slice(0));

          if (f !== undefined) {
            v = f(v);
          }

          if (v === null) {
            return;
          }

          dict[v] = 1 + (v in dict ? dict[v] : 0);
        });

        return Object.keys(dict).map(function (d) {
          return [d, dict[d], key, f];
        });
      }

      function addFilter(filter) {
        return function () {
          filterManager.addFilter(filter);

          return false;
        };
      }

      function fillTable(name, table, data) {
        if (!table.last) {
          table.last = V.h("table");
        }

        var max = 0;
        data.forEach(function (d) {
          if (d[1] > max) {
            max = d[1];
          }
        });

        var items = data.map(function (d) {
          var v = d[1] / max;
          var c1 = Chroma.contrast(scale(v), "white");
          var c2 = Chroma.contrast(scale(v), "black");

          var filter = new Filter(name, d[2], d[0], d[3]);

          var a = V.h("a", {href: "#", onclick: addFilter(filter)}, d[0]);

          var th = V.h("th", a);
          var td = V.h("td", V.h("span", {
            style: {
              width: Math.round(v * 100) + "%",
              backgroundColor: scale(v).hex(),
              color: c1 > c2 ? "white" : "black"
            }
          }, d[1].toFixed(0)));

          return V.h("tr", [th, td]);
        });

        var tableNew = V.h("table", items);
        table = V.patch(table, V.diff(table.last, tableNew));
        table.last = tableNew;
      }

      self.setData = function (data) {
        var onlineNodes = data.nodes.all.filter(online);
        var nodes = onlineNodes.concat(data.nodes.lost);
        var nodeDict = {};

        data.nodes.all.forEach(function (d) {
          nodeDict[d.nodeinfo.node_id] = d;
        });

        var statusDict = count(nodes, ["flags", "online"], function (d) {
          return d ? "online" : "offline";
        });
        var fwDict = count(nodes, ["nodeinfo", "software", "firmware", "release"]);
        var hwDict = count(nodes, ["nodeinfo", "hardware", "model"]);
        var geoDict = count(nodes, ["nodeinfo", "location"], function (d) {
          return d && d.longitude && d.latitude ? "ja" : "nein";
        });

        var autoDict = count(nodes, ["nodeinfo", "software", "autoupdater"], function (d) {
          if (d === null) {
            return null;
          } else if (d.enabled) {
            return d.branch;
          } else {
            return "(deaktiviert)";
          }
        });

        var siteDict = count(nodes, ["nodeinfo", "system", "site_code"], function (d) {
          var rt = d;
          if (config.siteNames) {
            config.siteNames.forEach(function (t) {
              if (d === t.site) {
                rt = t.name;
              }
            });
          }
          return rt;
        });

        fillTable("Status", statusTable, statusDict.sort(function (a, b) {
          return b[1] - a[1];
        }));
        fillTable("Firmware", fwTable, fwDict.sort(function (a, b) {
          if(b[0] < a[0]) return -1;
          if(b[0] > a[0]) return 1;
          return 0;
        }));
        fillTable("Hardware", hwTable, hwDict.sort(function (a, b) {
          return b[1] - a[1];
        }));
        fillTable("Koordinaten", geoTable, geoDict.sort(function (a, b) {
          return b[1] - a[1];
        }));
        fillTable("Autom. Updates", autoTable, autoDict.sort(function (a, b) {
          return b[1] - a[1];
        }));
        fillTable("Site", siteTable, siteDict.sort(function (a, b) {
          return b[1] - a[1];
        }));
      };

      self.render = function (el) {
        var h2;
        self.renderSingle(el, "Status", statusTable);
        self.renderSingle(el, "Firmwareversionen", fwTable);
        self.renderSingle(el, "Hardwaremodelle", hwTable);
        self.renderSingle(el, "Auf der Karte sichtbar", geoTable);
        self.renderSingle(el, "Autoupdater", autoTable);
        self.renderSingle(el, "Site", siteTable);

        if (config.globalInfos) {
          config.globalInfos.forEach(function (globalInfo) {
            h2 = document.createElement("h2");
            h2.textContent = globalInfo.name;
            el.appendChild(h2);
            el.appendChild(showStatGlobal(globalInfo));
          });
        }
      };

      self.renderSingle = function (el, heading, table) {
        var h2;
        h2 = document.createElement("h2");
        h2.textContent = heading;
        h2.onclick = function () {
          table.classList.toggle("hidden");
        };
        el.appendChild(h2);
        el.appendChild(table);
      };
      return self;
    };
  });