import {findGridCell, getGridPolygon} from "/src/utils/graphUtils";

export function editIce() {
  if (customization) return;
  closeDialogs(".stable");
  if (!layerIsOn("toggleIce")) toggleIce();

  elSelected = d3.select(d3.event.target);
  const type = elSelected.attr("type") ? "Glacier" : "Iceberg";
  document.getElementById("iceRandomize").style.display = type === "Glacier" ? "none" : "inline-block";
  document.getElementById("iceSize").style.display = type === "Glacier" ? "none" : "inline-block";
  if (type === "Iceberg") document.getElementById("iceSize").value = +elSelected.attr("size");
  ice.selectAll("*").classed("draggable", true).call(d3.drag().on("drag", dragElement));

  $("#iceEditor").dialog({
    title: "Edit " + type,
    resizable: false,
    position: {my: "center top+60", at: "top", of: d3.event, collision: "fit"},
    close: closeEditor
  });

  if (fmg.modules.editIce) return;
  fmg.modules.editIce = true;

  // add listeners
  document.getElementById("iceEditStyle").addEventListener("click", () => editStyle("ice"));
  document.getElementById("iceRandomize").addEventListener("click", randomizeShape);
  document.getElementById("iceSize").addEventListener("input", changeSize);
  document.getElementById("iceNew").addEventListener("click", toggleAdd);
  document.getElementById("iceRemove").addEventListener("click", removeIce);

  function randomizeShape() {
    const c = grid.points[+elSelected.attr("cell")];
    const s = +elSelected.attr("size");
    const i = ra(grid.cells.i),
      cn = grid.points[i];
    const poly = getGridPolygon(i).map(p => [p[0] - cn[0], p[1] - cn[1]]);
    const points = poly.map(p => [rn(c[0] + p[0] * s, 2), rn(c[1] + p[1] * s, 2)]);
    elSelected.attr("points", points);
  }

  function changeSize() {
    const c = grid.points[+elSelected.attr("cell")];
    const s = +elSelected.attr("size");
    const flat = elSelected
      .attr("points")
      .split(",")
      .map(el => +el);
    const pairs = [];
    while (flat.length) pairs.push(flat.splice(0, 2));
    const poly = pairs.map(p => [(p[0] - c[0]) / s, (p[1] - c[1]) / s]);
    const size = +this.value;
    const points = poly.map(p => [rn(c[0] + p[0] * size, 2), rn(c[1] + p[1] * size, 2)]);
    elSelected.attr("points", points).attr("size", size);
  }

  function toggleAdd() {
    document.getElementById("iceNew").classList.toggle("pressed");
    if (document.getElementById("iceNew").classList.contains("pressed")) {
      viewbox.style("cursor", "crosshair").on("click", addIcebergOnClick);
      tip("Click on map to create an iceberg. Hold Shift to add multiple", true);
    } else {
      clearMainTip();
      viewbox.on("click", clicked).style("cursor", "default");
    }
  }

  function addIcebergOnClick() {
    const [x, y] = d3.mouse(this);
    const i = findGridCell(x, y, grid);
    const c = grid.points[i];
    const s = +document.getElementById("iceSize").value;

    const points = getGridPolygon(i).map(p => [(p[0] + (c[0] - p[0]) / s) | 0, (p[1] + (c[1] - p[1]) / s) | 0]);
    const iceberg = ice.append("polygon").attr("points", points).attr("cell", i).attr("size", s);
    iceberg.call(d3.drag().on("drag", dragElement));
    if (d3.event.shiftKey === false) toggleAdd();
  }

  function removeIce() {
    const type = elSelected.attr("type") ? "Glacier" : "Iceberg";
    alertMessage.innerHTML = /* html */ `Are you sure you want to remove the ${type}?`;
    $("#alert").dialog({
      resizable: false,
      title: "Remove " + type,
      buttons: {
        Remove: function () {
          $(this).dialog("close");
          elSelected.remove();
          $("#iceEditor").dialog("close");
        },
        Cancel: function () {
          $(this).dialog("close");
        }
      }
    });
  }

  function dragElement() {
    const tr = parseTransform(this.getAttribute("transform"));
    const dx = +tr[0] - d3.event.x,
      dy = +tr[1] - d3.event.y;

    d3.event.on("drag", function () {
      const x = d3.event.x,
        y = d3.event.y;
      this.setAttribute("transform", `translate(${dx + x},${dy + y})`);
    });
  }

  function closeEditor() {
    ice.selectAll("*").classed("draggable", false).call(d3.drag().on("drag", null));
    clearMainTip();
    iceNew.classList.remove("pressed");
    unselect();
  }
}