'use strict';
function editDiplomacy() {
  if (customization) return;
  if (pack.states.filter((s) => s.i && !s.removed).length < 2) {
    tip('There should be at least 2 states to edit the diplomacy', false, 'error');
    return;
  }

  closeDialogs('#diplomacyEditor, .stable');
  if (!layerIsOn('toggleStates')) toggleStates();
  if (!layerIsOn('toggleBorders')) toggleBorders();
  if (layerIsOn('toggleProvinces')) toggleProvinces();
  if (layerIsOn('toggleCultures')) toggleCultures();
  if (layerIsOn('toggleBiomes')) toggleBiomes();
  if (layerIsOn('toggleReligions')) toggleReligions();

  const body = document.getElementById('diplomacyBodySection');
  const statuses = ['Ally', 'Friendly', 'Neutral', 'Suspicion', 'Enemy', 'Unknown', 'Rival', 'Vassal', 'Suzerain'];
  const description = [
    ' is an ally of ',
    ' is friendly to ',
    ' is neutral to ',
    ' is suspicious of ',
    ' is at war with ',
    ' does not know about ',
    ' is a rival of ',
    ' is a vassal of ',
    ' is suzerain to '
  ];
  const colors = ['#00b300', '#d4f8aa', '#edeee8', '#eeafaa', '#e64b40', '#a9a9a9', '#ad5a1f', '#87CEFA', '#00008B'];
  refreshDiplomacyEditor();

  tip('Click on a state to see its diplomatic relations', false, 'warning');
  viewbox.style('cursor', 'crosshair').on('click', selectStateOnMapClick);

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

  $('#diplomacyEditor').dialog({
    title: 'Diplomacy Editor',
    resizable: false,
    width: fitContent(),
    close: closeDiplomacyEditor,
    position: {my: 'right top', at: 'right-10 top+10', of: 'svg', collision: 'fit'}
  });

  // add listeners
  document.getElementById('diplomacyEditorRefresh').addEventListener('click', refreshDiplomacyEditor);
  document.getElementById('diplomacyEditStyle').addEventListener('click', () => editStyle('regions'));
  document.getElementById('diplomacyRegenerate').addEventListener('click', regenerateRelations);
  document.getElementById('diplomacyMatrix').addEventListener('click', showRelationsMatrix);
  document.getElementById('diplomacyHistory').addEventListener('click', showRelationsHistory);
  document.getElementById('diplomacyExport').addEventListener('click', downloadDiplomacyData);
  document.getElementById('diplomacySelect').addEventListener('mouseup', diplomacyChangeRelations);

  function refreshDiplomacyEditor() {
    diplomacyEditorAddLines();
    showStateRelations();
  }

  // add line for each state
  function diplomacyEditorAddLines() {
    const states = pack.states;
    const selectedLine = body.querySelector('div.Self');
    const sel = selectedLine ? +selectedLine.dataset.id : states.find((s) => s.i && !s.removed).i;
    const selName = states[sel].fullName;
    diplomacySelect.style.display = 'none';

    COArenderer.trigger('stateCOA' + sel, states[sel].coa);
    let lines = `<div class="states Self" data-id=${sel} data-tip="List below shows relations to ${selName}">
      <div style="width: max-content">${selName}</div>
      <svg class="coaIcon" viewBox="0 0 200 200"><use href="#stateCOA${sel}"></use></svg>
    </div>`;

    for (const s of states) {
      if (!s.i || s.removed || s.i === sel) continue;
      const relation = s.diplomacy[sel];
      const index = statuses.indexOf(relation);
      const color = colors[index];
      const tip = s.fullName + description[index] + selName;
      const tipSelect = `${tip}. Click to see relations to ${s.name}`;
      const tipChange = `${tip}. Click to change relations to ${selName}`;
      COArenderer.trigger('stateCOA' + s.i, s.coa);

      lines += `<div class="states" data-id=${s.i} data-name="${s.fullName}" data-relations="${relation}">
        <svg data-tip="${tipSelect}" class="coaIcon" viewBox="0 0 200 200"><use href="#stateCOA${s.i}"></use></svg>
        <div data-tip="${tipSelect}" style="width:12em">${s.fullName}</div>
        <svg data-tip="${tipChange}" width=".9em" height=".9em" style="margin-bottom:-1px" class="changeRelations">
          <rect x="0" y="0" width="100%" height="100%" fill="${color}" class="fillRect pointer" style="pointer-events: none"></rect>
        </svg>
        <input data-tip="${tipChange}" class="changeRelations diplomacyRelations" value="${relation}" readonly/>
      </div>`;
    }
    body.innerHTML = lines;

    // add listeners
    body.querySelectorAll('div.states').forEach((el) => el.addEventListener('mouseenter', (ev) => stateHighlightOn(ev)));
    body.querySelectorAll('div.states').forEach((el) => el.addEventListener('mouseleave', (ev) => stateHighlightOff(ev)));
    body.querySelectorAll('div.states').forEach((el) => el.addEventListener('click', selectStateOnLineClick));
    body.querySelectorAll('.changeRelations').forEach((el) => el.addEventListener('click', toggleDiplomacySelect));

    applySorting(diplomacyHeader);
    $('#diplomacyEditor').dialog();
  }

  function stateHighlightOn(event) {
    if (!layerIsOn('toggleStates')) return;
    const state = +event.target.dataset.id;
    if (customization || !state) return;
    const d = regions.select('#state' + state).attr('d');

    const path = debug.append('path').attr('class', 'highlight').attr('d', d).attr('fill', 'none').attr('stroke', 'red').attr('stroke-width', 1).attr('opacity', 1).attr('filter', 'url(#blur1)');

    const l = path.node().getTotalLength(),
      dur = (l + 5000) / 2;
    const i = d3.interpolateString('0,' + l, l + ',' + l);
    path
      .transition()
      .duration(dur)
      .attrTween('stroke-dasharray', function () {
        return (t) => i(t);
      });
  }

  function stateHighlightOff(event) {
    debug.selectAll('.highlight').each(function () {
      d3.select(this).transition().duration(1000).attr('opacity', 0).remove();
    });
  }

  function showStateRelations() {
    const selectedLine = body.querySelector('div.Self');
    const sel = selectedLine ? +selectedLine.dataset.id : pack.states.find((s) => s.i && !s.removed).i;
    if (!sel) return;
    if (!layerIsOn('toggleStates')) toggleStates();

    statesBody.selectAll('path').each(function () {
      if (this.id.slice(0, 9) === 'state-gap') return; // exclude state gap element
      const id = +this.id.slice(5); // state id
      const index = statuses.indexOf(pack.states[id].diplomacy[sel]); // status index
      const clr = index !== -1 ? colors[index] : '#4682b4'; // Self (bluish)
      this.setAttribute('fill', clr);
      statesBody.select('#state-gap' + id).attr('stroke', clr);
      statesHalo.select('#state-border' + id).attr('stroke', d3.color(clr).darker().hex());
    });
  }

  function selectStateOnLineClick() {
    if (this.classList.contains('Self')) return;
    body.querySelector('div.Self').classList.remove('Self');
    this.classList.add('Self');
    refreshDiplomacyEditor();
  }

  function selectStateOnMapClick() {
    const point = d3.mouse(this);
    const i = findCell(point[0], point[1]);
    const state = pack.cells.state[i];
    if (!state) return;
    const selectedLine = body.querySelector('div.Self');
    if (+selectedLine.dataset.id === state) return;

    selectedLine.classList.remove('Self');
    body.querySelector("div[data-id='" + state + "']").classList.add('Self');
    refreshDiplomacyEditor();
  }

  function toggleDiplomacySelect(event) {
    event.stopPropagation();
    const select = document.getElementById('diplomacySelect');
    const show = select.style.display === 'none';
    if (!show) {
      select.style.display = 'none';
      return;
    }
    select.style.display = 'block';
    const input = event.target.closest('div').querySelector('input');
    select.style.left = input.getBoundingClientRect().left + 'px';
    select.style.top = input.getBoundingClientRect().bottom + 'px';
    body.dataset.state = event.target.closest('div.states').dataset.id;
  }

  function diplomacyChangeRelations(event) {
    event.stopPropagation();
    diplomacySelect.style.display = 'none';
    const subject = +body.dataset.state;
    const rel = event.target.innerHTML;

    const states = pack.states,
      chronicle = states[0].diplomacy;
    const selectedLine = body.querySelector('div.Self');
    const object = selectedLine ? +selectedLine.dataset.id : states.find((s) => s.i && !s.removed).i;
    if (!object) return;
    const objectName = states[object].name; // object of relations change
    const subjectName = states[subject].name; // subject of relations change - actor

    const oldRel = states[subject].diplomacy[object];
    if (rel === oldRel) return;
    states[subject].diplomacy[object] = rel;
    states[object].diplomacy[subject] = rel === 'Vassal' ? 'Suzerain' : rel === 'Suzerain' ? 'Vassal' : rel;

    // update relation history
    const change = () => [`Relations change`, `${subjectName}-${getAdjective(objectName)} relations changed to ${rel.toLowerCase()}`];
    const ally = () => [`Defence pact`, `${subjectName} entered into defensive pact with ${objectName}`];
    const vassal = () => [`Vassalization`, `${subjectName} became a vassal of ${objectName}`];
    const suzerain = () => [`Vassalization`, `${subjectName} vassalized ${objectName}`];
    const rival = () => [`Rivalization`, `${subjectName} and ${objectName} became rivals`];
    const unknown = () => [`Relations severance`, `${subjectName} recalled their ambassadors and wiped all the records about ${objectName}`];
    const war = () => [`War declaration`, `${subjectName} declared a war on its enemy ${objectName}`];
    const peace = () => {
      const treaty = `${subjectName} and ${objectName} agreed to cease fire and signed a peace treaty`;
      const changed = rel === 'Ally' ? ally() : rel === 'Vassal' ? vassal() : rel === 'Suzerain' ? suzerain() : rel === 'Unknown' ? unknown() : change();
      return [`War termination`, treaty, changed[1]];
    };

    if (oldRel === 'Enemy') chronicle.push(peace());
    else if (rel === 'Enemy') chronicle.push(war());
    else if (rel === 'Vassal') chronicle.push(vassal());
    else if (rel === 'Suzerain') chronicle.push(suzerain());
    else if (rel === 'Ally') chronicle.push(ally());
    else if (rel === 'Unknown') chronicle.push(unknown());
    else if (rel === 'Rival') chronicle.push(rival());
    else chronicle.push(change());

    refreshDiplomacyEditor();
  }

  function regenerateRelations() {
    BurgsAndStates.generateDiplomacy();
    refreshDiplomacyEditor();
  }

  function showRelationsHistory() {
    const chronicle = pack.states[0].diplomacy;
    if (!chronicle.length) {
      tip('Relations history is blank', false, 'error');
      return;
    }

    let message = `<div autocorrect="off" spellcheck="false">`;
    chronicle.forEach((e, d) => {
      message += `<div>`;
      e.forEach((l, i) => (message += `<div contenteditable="true" data-id="${d}-${i}"${i ? '' : " style='font-weight:bold'"}>${l}</div>`));
      message += `&#8205;</div>`;
    });
    alertMessage.innerHTML = message + `</div><i id="info-line">Type to edit. Press Enter to add a new line, empty the element to remove it</i>`;
    alertMessage.querySelectorAll("div[contenteditable='true']").forEach((el) => el.addEventListener('input', changeReliationsHistory));

    $('#alert').dialog({
      title: 'Relations history',
      position: {my: 'center', at: 'center', of: 'svg'},
      buttons: {
        Save: function () {
          const data = this.querySelector('div').innerText.split('\n').join('\r\n');
          const name = getFileName('Relations history') + '.txt';
          downloadFile(data, name);
        },
        Clear: function () {
          pack.states[0].diplomacy = [];
          $(this).dialog('close');
        },
        Close: function () {
          $(this).dialog('close');
        }
      }
    });
  }

  function changeReliationsHistory() {
    const i = this.dataset.id.split('-');
    const group = pack.states[0].diplomacy[i[0]];
    if (this.innerHTML === '') {
      group.splice(i[1], 1);
      this.remove();
    } else group[i[1]] = this.innerHTML;
  }

  function showRelationsMatrix() {
    const states = pack.states.filter((s) => s.i && !s.removed);
    const valid = states.map((s) => s.i);

    let message = `<table class="matrix-table"><tr><th data-tip='&#8205;'></th>`;
    message += states.map((s) => `<th data-tip='See relations to ${s.fullName}'>${s.name}</th>`).join('') + `</tr>`; // headers
    states.forEach((s) => {
      message +=
        `<tr><th data-tip='See relations of ${s.fullName}'>${s.name}</th>` +
        s.diplomacy
          .filter((v, i) => valid.includes(i))
          .map((r, i) => {
            const desc = description[statuses.indexOf(r)];
            const tip = desc ? s.fullName + desc + pack.states[valid[i]].fullName : '&#8205;';
            return `<td data-tip='${tip}' class='${r}'>${r}</td>`;
          })
          .join('') +
        '</tr>';
    });
    message += `</table>`;
    alertMessage.innerHTML = message;

    $('#alert').dialog({title: 'Relations matrix', width: fitContent(), position: {my: 'center', at: 'center', of: 'svg'}, buttons: {}});
  }

  function downloadDiplomacyData() {
    const states = pack.states.filter((s) => s.i && !s.removed);
    const valid = states.map((s) => s.i);

    let data = ',' + states.map((s) => s.name).join(',') + '\n'; // headers
    states.forEach((s) => {
      const rels = s.diplomacy.filter((v, i) => valid.includes(i));
      data += s.name + ',' + rels.join(',') + '\n';
    });

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

  function closeDiplomacyEditor() {
    restoreDefaultEvents();
    clearMainTip();
    const selected = body.querySelector('div.Self');
    if (selected) selected.classList.remove('Self');
    if (layerIsOn('toggleStates')) drawStates();
    else toggleStates();
    debug.selectAll('.highlight').remove();
  }
}