"use strict";
function editReligions() {
  if (customization) return;
  closeDialogs("#religionsEditor, .stable");
  if (!layerIsOn("toggleReligions")) toggleReligions();
  if (layerIsOn("toggleCultures")) toggleCultures();
  if (layerIsOn("toggleStates")) toggleStates();
  if (layerIsOn("toggleBiomes")) toggleBiomes();
  if (layerIsOn("toggleProvinces")) toggleProvinces();

  const body = document.getElementById("religionsBody");
  const animate = d3.transition().duration(1500).ease(d3.easeSinIn);
  drawReligionCenters();
  refreshReligionsEditor();

  if (modules.editReligions) return;
  modules.editReligions = true;

  $("#religionsEditor").dialog({
    title: "Religions Editor", resizable: false, width: fitContent(), close: closeReligionsEditor,
    position: {my: "right top", at: "right-10 top+10", of: "svg"}
  });

  // add listeners
  document.getElementById("religionsEditorRefresh").addEventListener("click", refreshReligionsEditor);
  document.getElementById("religionsLegend").addEventListener("click", toggleLegend);
  document.getElementById("religionsPercentage").addEventListener("click", togglePercentageMode);
  document.getElementById("religionsManually").addEventListener("click", enterReligionsManualAssignent);
  document.getElementById("religionsManuallyApply").addEventListener("click", applyReligionsManualAssignent);
  document.getElementById("religionsManuallyCancel").addEventListener("click", () => exitReligionsManualAssignment());
  document.getElementById("religionsAdd").addEventListener("click", enterAddReligionMode);
  document.getElementById("religionsExport").addEventListener("click", downloadReligionsData);

  function refreshReligionsEditor() {
    religionsCollectStatistics();
    religionsEditorAddLines();
  }

  function religionsCollectStatistics() {
    const cells = pack.cells, religions = pack.religions;
    religions.forEach(r => r.area = r.rural = r.urban = 0);

    for (const i of cells.i) {
      if (cells.h[i] < 20) continue;
      const r = cells.religion[i];
      religions[r].area += cells.area[i];
      religions[r].rural += cells.pop[i];
      if (cells.burg[i]) religions[r].urban += pack.burgs[cells.burg[i]].population;
    }
  }

  // add line for each religion
  function religionsEditorAddLines() {
    const unit = areaUnit.value === "square" ? " " + distanceUnitInput.value + "²" : " " + areaUnit.value;
    let lines = "", totalArea = 0, totalPopulation = 0;

    for (const r of pack.religions) {
      if (r.removed) continue;
      const area = r.area * (distanceScaleInput.value ** 2);
      const rural = r.rural * populationRate.value;
      const urban = r.urban * populationRate.value * urbanization.value;
      const population = rn(rural + urban);
      const populationTip = `Total population: ${si(population)}; Rural population: ${si(rural)}; Urban population: ${si(urban)}`;
      totalArea += area;
      totalPopulation += population;

      if (r.i) {
        lines += `<div class="states religions" data-id=${r.i} data-name="${r.name}" data-color="${r.color}" data-area=${area} 
          data-population=${population} data-type=${r.type} data-form=${r.form} data-deity="${r.deity?r.deity:''}" data-expansionism=${r.expansionism}>
          <svg data-tip="Religion fill style. Click to change" width="9" height="9" style="margin-bottom:-1px"><rect x="0" y="0" width="9" height="9" fill="${r.color}" class="zoneFill"></svg>
          <input data-tip="Religion name. Click and type to change" class="religionName" value="${r.name}" autocorrect="off" spellcheck="false">
          <select data-tip="Religion type" class="religionType">${getTypeOptions(r.type)}</select>
          <input data-tip="Religion form" class="religionForm hide" value="${r.form}" autocorrect="off" spellcheck="false">
          <span data-tip="Click to re-generate supreme deity" class="icon-arrows-cw hide"></span>
          <input data-tip="Religion supreme deity" class="religionDeity hide" value="${r.deity?r.deity:''}" autocorrect="off" spellcheck="false">
          <span data-tip="Religion area" style="padding-right: 4px" class="icon-map-o hide"></span>
          <div data-tip="Religion area" class="biomeArea hide">${si(area) + unit}</div>
          <span data-tip="${populationTip}" class="icon-male hide"></span>
          <div data-tip="${populationTip}" class="culturePopulation hide">${si(population)}</div>
          <span data-tip="Remove religion" class="icon-trash-empty hide"></span>
        </div>`;
      } else {
        // No religion (neutral) line
        lines += `<div class="states" data-id=${r.i} data-name="${r.name}" data-color="" data-area=${area} data-population=${population} data-type="" data-form="" data-deity="" data-expansionism="">
          <svg width="9" height="9" class="placeholder"></svg>
          <input data-tip="Religion name. Click and type to change" class="religionName italic" value="${r.name}" autocorrect="off" spellcheck="false">
          <select data-tip="Religion type" class="religionType placeholder">${getTypeOptions(r.type)}</select>
          <input data-tip="Religion form" class="religionForm placeholder hide" value="" autocorrect="off" spellcheck="false">
          <span data-tip="Click to re-generate supreme deity" class="icon-arrows-cw placeholder hide"></span>
          <input data-tip="Religion supreme deity" class="religionDeity placeholder hide" value="" autocorrect="off" spellcheck="false">
          <span data-tip="Religion area" style="padding-right: 4px" class="icon-map-o hide"></span>
          <div data-tip="Religion area" class="biomeArea hide">${si(area) + unit}</div>
          <span data-tip="${populationTip}" class="icon-male hide"></span>
          <div data-tip="${populationTip}" class="culturePopulation hide">${si(population)}</div>
        </div>`;
      }
    }
    body.innerHTML = lines;

    // update footer
    religionsFooterNumber.innerHTML = pack.religions.filter(r => r.i && !r.removed).length;
    religionsFooterArea.innerHTML = si(totalArea) + unit;
    religionsFooterPopulation.innerHTML = si(totalPopulation);
    religionsFooterArea.dataset.area = totalArea;
    religionsFooterPopulation.dataset.population = totalPopulation;

    // add listeners
    body.querySelectorAll("div.religions").forEach(el => el.addEventListener("mouseenter", ev => religionHighlightOn(ev)));
    body.querySelectorAll("div.religions").forEach(el => el.addEventListener("mouseleave", ev => religionHighlightOff(ev)));
    body.querySelectorAll("div.states").forEach(el => el.addEventListener("click", selectReligionOnLineClick));
    body.querySelectorAll("rect.zoneFill").forEach(el => el.addEventListener("click", religionChangeColor));
    body.querySelectorAll("div > input.religionName").forEach(el => el.addEventListener("input", religionChangeName));
    body.querySelectorAll("div > select.religionType").forEach(el => el.addEventListener("input", religionChangeType));
    body.querySelectorAll("div > input.religionForm").forEach(el => el.addEventListener("input", religionChangeForm));
    body.querySelectorAll("div > input.religionDeity").forEach(el => el.addEventListener("input", religionChangeDeity));
    body.querySelectorAll("div > span.icon-arrows-cw").forEach(el => el.addEventListener("click", regenerateDeity));
    body.querySelectorAll("div > span.icon-trash-empty").forEach(el => el.addEventListener("click", religionRemove));

    if (body.dataset.type === "percentage") {body.dataset.type = "absolute"; togglePercentageMode();}
    applySorting(religionsHeader);
    $("#religionsEditor").dialog();
  }

  function getTypeOptions(type) {
    let options = "";
    const types = ["Folk", "Organized", "Cult", "Heresy"];
    types.forEach(t => options += `<option ${type === t ? "selected" : ""} value="${t}">${t}</option>`);
    return options;
  }

  function religionHighlightOn(event) {
    if (!layerIsOn("toggleReligions")) return;
    if (customization) return;
    const religion = +event.target.dataset.id;
    relig.select("#religion"+religion).raise().transition(animate).attr("stroke-width", 2.5).attr("stroke", "#c13119");
    debug.select("#cultureCenter"+religion).raise().transition(animate).attr("r", 8).attr("stroke", "#c13119");
  }

  function religionHighlightOff(event) {
    if (!layerIsOn("toggleReligions")) return;
    const religion = +event.target.dataset.id;
    relig.select("#religion"+religion).transition().attr("stroke-width", null).attr("stroke", null);
    debug.select("#cultureCenter"+religion).transition().attr("r", 6).attr("stroke", null);
  }

  function religionChangeColor() {
    const el = this;
    const currentFill = el.getAttribute("fill");
    const religion = +el.parentNode.parentNode.dataset.id;

    const callback = function(fill) {
      el.setAttribute("fill", fill);
      pack.religions[religion].color = fill;
      relig.select("#religion"+religion).attr("fill", fill);
      debug.select("#cultureCenter"+religion).attr("fill", fill);
    }

    openPicker(currentFill, callback);
  }

  function religionChangeName() {
    const religion = +this.parentNode.dataset.id;
    this.parentNode.dataset.name = this.value;
    pack.religions[religion].name = this.value;
  }

  function religionChangeType() {
    const religion = +this.parentNode.dataset.id;
    this.parentNode.dataset.type = this.value;
    pack.religions[religion].type = this.value;
  }

  function religionChangeForm() {
    const religion = +this.parentNode.dataset.id;
    this.parentNode.dataset.form = this.value;
    pack.religions[religion].form = this.value;
  }

  function religionChangeDeity() {
    const religion = +this.parentNode.dataset.id;
    this.parentNode.dataset.deity = this.value;
    pack.religions[religion].deity = this.value;
  }

  function regenerateDeity() {
    const religion = +this.parentNode.dataset.id;
    const culture = pack.religions[religion].culture;
    const deity = Religions.getDeityName(culture);
    this.parentNode.dataset.deity = deity;
    pack.religions[religion].deity = deity;
    this.nextElementSibling.value = deity;
  }

  function religionRemove() {
    if (customization) return;
    const religion = +this.parentNode.dataset.id;
    relig.select("#religion"+religion).remove();
    debug.select("#cultureCenter"+religion).remove();

    pack.cells.religion.forEach((r, i) => {if(r === religion) pack.cells.religion[i] = 0;});
    pack.religions[religion].removed = true;

    refreshReligionsEditor();
  }

  function drawReligionCenters() {
    const tooltip = "Drag to move the religion center";
    debug.select("#religionCenters").remove();
    const religionCenters = debug.append("g").attr("id", "religionCenters")
      .attr("stroke-width", 2).attr("stroke", "#444444").style("cursor", "move");

    const data = pack.religions.filter(r => r.center && !r.removed);
    religionCenters.selectAll("circle").data(data).enter().append("circle")
      .attr("id", d => "cultureCenter"+d.i).attr("data-id", d => d.i)
      .attr("r", 6).attr("fill", d => pack.religions[d.i].color)
      .attr("cx", d => pack.cells.p[d.center][0]).attr("cy", d => pack.cells.p[d.center][1])
      .on("mouseenter", d => {tip(tooltip, true); body.querySelector(`div[data-id='${d.i}']`).classList.add("selected"); religionHighlightOn(event);})
      .on("mouseleave", d => {tip('', true); body.querySelector(`div[data-id='${d.i}']`).classList.remove("selected"); religionHighlightOff(event);})
      .call(d3.drag().on("start", religionCenterDrag));
  }

  function religionCenterDrag() {
    const el = d3.select(this);
    const r = +this.dataset.id;
    d3.event.on("drag", () => {
      el.attr("cx", d3.event.x).attr("cy", d3.event.y);
      const cell = findCell(d3.event.x, d3.event.y);
      if (pack.cells.h[cell] < 20) return; // ignore dragging on water
      pack.religions[r].center = cell;
    });
  }

  function toggleLegend() {
    if (legend.selectAll("*").size()) {clearLegend(); return;}; // hide legend
    const data = pack.religions.filter(r => r.i && !r.removed && r.area).sort((a, b) => b.area - a.area).map(r => [r.i, r.color, r.name]);
    drawLegend("Religions", data);
  }

  function togglePercentageMode() {
    if (body.dataset.type === "absolute") {
      body.dataset.type = "percentage";
      const totalArea = +religionsFooterArea.dataset.area;
      const totalPopulation = +religionsFooterPopulation.dataset.population;

      body.querySelectorAll(":scope > div").forEach(function(el) {
        el.querySelector(".biomeArea").innerHTML = rn(+el.dataset.area / totalArea * 100) + "%";
        el.querySelector(".culturePopulation").innerHTML = rn(+el.dataset.population / totalPopulation * 100) + "%";
      });
    } else {
      body.dataset.type = "absolute";
      religionsEditorAddLines();
    }
  }

  function enterReligionsManualAssignent() {
    if (!layerIsOn("toggleReligions")) toggleReligions();
    customization = 7;
    relig.append("g").attr("id", "temp");
    document.querySelectorAll("#religionsBottom > button").forEach(el => el.style.display = "none");
    document.getElementById("religionsManuallyButtons").style.display = "inline-block";
    debug.select("#religionCenters").style("display", "none");

    religionsEditor.querySelectorAll(".hide").forEach(el => el.classList.add("hidden"));
    religionsFooter.style.display = "none";
    body.querySelectorAll("div > input, select, span, svg").forEach(e => e.style.pointerEvents = "none");
    $("#religionsEditor").dialog({position: {my: "right top", at: "right-10 top+10", of: "svg"}});

    tip("Click on religion to select, drag the circle to change religion", true);
    viewbox.style("cursor", "crosshair")
      .on("click", selectReligionOnMapClick)
      .call(d3.drag().on("start", dragReligionBrush))
      .on("touchmove mousemove", moveReligionBrush);

    body.querySelector("div").classList.add("selected");
  }

  function selectReligionOnLineClick(i) {
    if (customization !== 7) return;
    body.querySelector("div.selected").classList.remove("selected");
    this.classList.add("selected");
  }

  function selectReligionOnMapClick() {
    const point = d3.mouse(this);
    const i = findCell(point[0], point[1]);
    if (pack.cells.h[i] < 20) return;

    const assigned = relig.select("#temp").select("polygon[data-cell='"+i+"']");
    const religion = assigned.size() ? +assigned.attr("data-religion") : pack.cells.religion[i];

    body.querySelector("div.selected").classList.remove("selected");
    body.querySelector("div[data-id='"+religion+"']").classList.add("selected");
  }
  
  function dragReligionBrush() {
    const r = +religionsManuallyBrushNumber.value;

    d3.event.on("drag", () => {
      if (!d3.event.dx && !d3.event.dy) return;
      const p = d3.mouse(this);
      moveCircle(p[0], p[1], r);
  
      const found = r > 5 ? findAll(p[0], p[1], r) : [findCell(p[0], p[1], r)];
      const selection = found.filter(isLand);
      if (selection) changeReligionForSelection(selection);
    });
  }

  // change religion within selection
  function changeReligionForSelection(selection) {
    const temp = relig.select("#temp");
    const selected = body.querySelector("div.selected");
    const r = +selected.dataset.id; // religionNew
    const color = pack.religions[r].color || "#ffffff";

    selection.forEach(function(i) {
      const exists = temp.select("polygon[data-cell='"+i+"']");
      const religionOld = exists.size() ? +exists.attr("data-religion") : pack.cells.religion[i];
      if (r === religionOld) return;

      // change of append new element
      if (exists.size()) exists.attr("data-religion", r).attr("fill", color);
      else temp.append("polygon").attr("data-cell", i).attr("data-religion", r).attr("points", getPackPolygon(i)).attr("fill", color);
    });
  }

  function moveReligionBrush() {
    showMainTip();
    const point = d3.mouse(this);
    const radius = +religionsManuallyBrushNumber.value;
    moveCircle(point[0], point[1], radius);
  }

  function applyReligionsManualAssignent() {
    const changed = relig.select("#temp").selectAll("polygon");
    changed.each(function() {
      const i = +this.dataset.cell;
      const r = +this.dataset.religion;
      pack.cells.religion[i] = r;
    });

    if (changed.size()) {
      drawReligions();
      refreshReligionsEditor();
    }
    exitReligionsManualAssignment();
  }
 
  function exitReligionsManualAssignment(close) {
    customization = 0;
    relig.select("#temp").remove();
    removeCircle();
    document.querySelectorAll("#religionsBottom > button").forEach(el => el.style.display = "inline-block");
    document.getElementById("religionsManuallyButtons").style.display = "none";

    religionsEditor.querySelectorAll(".hide").forEach(el => el.classList.remove("hidden"));
    religionsFooter.style.display = "block";
    body.querySelectorAll("div > input, select, span, svg").forEach(e => e.style.pointerEvents = "all");
    if(!close) $("#religionsEditor").dialog({position: {my: "right top", at: "right-10 top+10", of: "svg"}});

    debug.select("#religionCenters").style("display", null);
    restoreDefaultEvents();
    clearMainTip();
    const selected = body.querySelector("div.selected");
    if (selected) selected.classList.remove("selected");
  }

  function enterAddReligionMode() {
    if (this.classList.contains("pressed")) {exitAddReligionMode(); return;};
    customization = 8;
    this.classList.add("pressed");
    tip("Click on the map to add a new religion", true);
    viewbox.style("cursor", "crosshair").on("click", addReligion);
    body.querySelectorAll("div > input, select, span, svg").forEach(e => e.style.pointerEvents = "none");
  }

  function exitAddReligionMode() {
    customization = 0;
    restoreDefaultEvents();
    clearMainTip();
    body.querySelectorAll("div > input, select, span, svg").forEach(e => e.style.pointerEvents = "all");
    if (religionsAdd.classList.contains("pressed")) religionsAdd.classList.remove("pressed");
  }

  function addReligion() {
    const point = d3.mouse(this);
    const center = findCell(point[0], point[1]);
    if (pack.cells.h[center] < 20) {tip("You cannot place religion center into the water. Please click on a land cell", false, "error"); return;}
    const occupied = pack.religions.some(r => !r.removed && r.center === center);
    if (occupied) {tip("This cell is already a religion center. Please select a different cell", false, "error"); return;}

    if (d3.event.shiftKey === false) exitAddReligionMode();

    Religions.add(center);
    drawReligionCenters();
    religionsEditorAddLines();
  }

  function downloadReligionsData() {
    const unit = areaUnit.value === "square" ? distanceUnitInput.value + "2" : areaUnit.value;
    let data = "Id,Religion,Color,Type,Form,Deity,Area "+unit+",Population\n"; // headers
    
    body.querySelectorAll(":scope > div").forEach(function(el) {
      data += el.dataset.id + ",";
      data += el.dataset.name + ",";
      data += el.dataset.color + ",";
      data += el.dataset.type + ",";
      data += el.dataset.form + ",";
      data += el.dataset.deity.replace(",", " -") + ",";
      data += el.dataset.area + ",";
      data += el.dataset.population + "\n";
    });

    const dataBlob = new Blob([data], {type: "text/plain"});
    const url = window.URL.createObjectURL(dataBlob);
    const link = document.createElement("a");
    document.body.appendChild(link);
    link.download = "religions_data" + Date.now() + ".csv";
    link.href = url;
    link.click();
    window.setTimeout(function() {window.URL.revokeObjectURL(url);}, 2000);
  }
  
  function closeReligionsEditor() {
    debug.select("#religionCenters").remove();
    exitReligionsManualAssignment("close");
    exitAddReligionMode();
  }

}