'use strict';
function overviewRegiments(state) {
  if (customization) return;
  closeDialogs('.stable');
  if (!layerIsOn('toggleMilitary')) toggleMilitary();

  const body = document.getElementById('regimentsBody');
  updateFilter(state);
  addLines();
  $('#regimentsOverview').dialog();

  if (modules.overviewRegiments) return;
  modules.overviewRegiments = true;
  updateHeaders();

  $('#regimentsOverview').dialog({
    title: 'Regiments Overview',
    resizable: false,
    width: fitContent(),
    position: {my: 'right top', at: 'right-10 top+10', of: 'svg', collision: 'fit'}
  });

  // add listeners
  document.getElementById('regimentsOverviewRefresh').addEventListener('click', addLines);
  document.getElementById('regimentsPercentage').addEventListener('click', togglePercentageMode);
  document.getElementById('regimentsAddNew').addEventListener('click', toggleAdd);
  document.getElementById('regimentsExport').addEventListener('click', downloadRegimentsData);
  document.getElementById('regimentsFilter').addEventListener('change', addLines);

  // update military types in header and tooltips
  function updateHeaders() {
    const header = document.getElementById('regimentsHeader');
    header.querySelectorAll('.removable').forEach((el) => el.remove());
    const insert = (html) => document.getElementById('regimentsTotal').insertAdjacentHTML('beforebegin', html);
    for (const u of options.military) {
      const label = capitalize(u.name.replace(/_/g, ' '));
      insert(`<div data-tip="Regiment ${u.name} units number. Click to sort" class="sortable removable" data-sortby="${u.name}">${label}&nbsp;</div>`);
    }
    header.querySelectorAll('.removable').forEach(function (e) {
      e.addEventListener('click', function () {
        sortLines(this);
      });
    });
  }

  // add line for each state
  function addLines() {
    const state = +regimentsFilter.value;
    body.innerHTML = '';
    let lines = '';
    const regiments = [];

    for (const s of pack.states) {
      if (!s.i || s.removed || !s.military.length) continue;
      if (state !== -1 && s.i !== state) continue; // specific state is selected

      for (const r of s.military) {
        const sortData = options.military.map((u) => `data-${u.name}=${r.u[u.name] || 0}`).join(' ');
        const lineData = options.military.map((u) => `<div data-type="${u.name}" data-tip="${capitalize(u.name)} units number">${r.u[u.name] || 0}</div>`).join(' ');

        lines += `<div class="states" data-id=${r.i} data-s="${s.i}" data-state="${s.name}" data-name="${r.name}" ${sortData} data-total="${r.a}">
          <svg data-tip="${s.fullName}" width=".9em" height=".9em" style="margin-bottom:-1px"><rect x="0" y="0" width="100%" height="100%" fill="${s.color}" class="fillRect"></svg>
          <input data-tip="${s.fullName}" style="width:6em" value="${s.name}" readonly>
          <span data-tip="Regiment's emblem" style="width:1em">${r.icon}</span>
          <input data-tip="Regiment's name" style="width:13em" value="${r.name}" readonly>
          ${lineData}
          <div data-type="total" data-tip="Total military personnel (not considering crew)" style="font-weight: bold">${r.a}</div>
          <span data-tip="Edit regiment" onclick="editRegiment('#regiment${s.i}-${r.i}')" class="icon-pencil pointer"></span>
        </div>`;

        regiments.push(r);
      }
    }

    lines += `<div id="regimentsTotalLine" class="totalLine" data-tip="Total of all displayed regiments">
      <div style="width: 21em; margin-left: 1em">Regiments: ${regiments.length}</div>
      ${options.military.map((u) => `<div style="width:5em">${si(d3.sum(regiments.map((r) => r.u[u.name] || 0)))}</div>`).join(' ')}
      <div style="width:5em">${si(d3.sum(regiments.map((r) => r.a)))}</div>
    </div>`;

    body.insertAdjacentHTML('beforeend', lines);
    if (body.dataset.type === 'percentage') {
      body.dataset.type = 'absolute';
      togglePercentageMode();
    }
    applySorting(regimentsHeader);

    // add listeners
    body.querySelectorAll('div.states').forEach((el) => el.addEventListener('mouseenter', (ev) => regimentHighlightOn(ev)));
    body.querySelectorAll('div.states').forEach((el) => el.addEventListener('mouseleave', (ev) => regimentHighlightOff(ev)));
  }

  function updateFilter(state) {
    const filter = document.getElementById('regimentsFilter');
    filter.options.length = 0; // remove all options
    filter.options.add(new Option(`all`, -1, false, state === -1));
    const statesSorted = pack.states.filter((s) => s.i && !s.removed).sort((a, b) => (a.name > b.name ? 1 : -1));
    statesSorted.forEach((s) => filter.options.add(new Option(s.name, s.i, false, s.i == state)));
  }

  function regimentHighlightOn(event) {
    const state = +event.target.dataset.s;
    const id = +event.target.dataset.id;
    if (customization || !state) return;
    armies.select(`g > g#regiment${state}-${id}`).transition().duration(2000).style('fill', '#ff0000');
  }

  function regimentHighlightOff(event) {
    const state = +event.target.dataset.s;
    const id = +event.target.dataset.id;
    armies.select(`g > g#regiment${state}-${id}`).transition().duration(1000).style('fill', null);
  }

  function togglePercentageMode() {
    if (body.dataset.type === 'absolute') {
      body.dataset.type = 'percentage';
      const lines = body.querySelectorAll(':scope > div:not(.totalLine)');
      const array = Array.from(lines),
        cache = [];

      const total = function (type) {
        if (cache[type]) cache[type];
        cache[type] = d3.sum(array.map((el) => +el.dataset[type]));
        return cache[type];
      };

      lines.forEach(function (el) {
        el.querySelectorAll('div').forEach(function (div) {
          const type = div.dataset.type;
          if (type === 'rate') return;
          div.textContent = total(type) ? rn((+el.dataset[type] / total(type)) * 100) + '%' : '0%';
        });
      });
    } else {
      body.dataset.type = 'absolute';
      addLines();
    }
  }

  function toggleAdd() {
    document.getElementById('regimentsAddNew').classList.toggle('pressed');
    if (document.getElementById('regimentsAddNew').classList.contains('pressed')) {
      viewbox.style('cursor', 'crosshair').on('click', addRegimentOnClick);
      tip('Click on map to create new regiment or fleet', true);
      if (regimentAdd.offsetParent) regimentAdd.classList.add('pressed');
    } else {
      clearMainTip();
      viewbox.on('click', clicked).style('cursor', 'default');
      addLines();
      if (regimentAdd.offsetParent) regimentAdd.classList.remove('pressed');
    }
  }

  function addRegimentOnClick() {
    const state = +regimentsFilter.value;
    if (state === -1) {
      tip('Please select state from the list', false, 'error');
      return;
    }

    const point = d3.mouse(this);
    const cell = findCell(point[0], point[1]);
    const x = pack.cells.p[cell][0],
      y = pack.cells.p[cell][1];
    const military = pack.states[state].military;
    const i = military.length ? last(military).i + 1 : 0;
    const n = +(pack.cells.h[cell] < 20); // naval or land
    const reg = {a: 0, cell, i, n, u: {}, x, y, bx: x, by: y, state, icon: '🛡️'};
    reg.name = Military.getName(reg, military);
    military.push(reg);
    Military.generateNote(reg, pack.states[state]); // add legend
    Military.drawRegiment(reg, state);
    toggleAdd();
  }

  function downloadRegimentsData() {
    const units = options.military.map((u) => u.name);
    let data = 'State,Id,Name,' + units.map((u) => capitalize(u)).join(',') + ',Total\n'; // headers

    body.querySelectorAll(':scope > div:not(.totalLine)').forEach(function (el) {
      data += el.dataset.state + ',';
      data += el.dataset.id + ',';
      data += el.dataset.name + ',';
      data += units.map((u) => el.dataset[u]).join(',') + ',';
      data += el.dataset.total + '\n';
    });

    const name = getFileName('Regiments') + '.csv';
    downloadFile(data, name);
  }
}