$("#source").val('');
$('#tableType').val("minecraft:generic");
$('#indentationSelect').val("2");
let indentation = 2;
let luck_based = false;
let table = {
  type: "minecraft:generic",
  pools: []
};
addPool();
addEntry($('.pool').get());

function getPool(el) {
  let poolIndex = parseInt($(el).closest('.pool').attr('data-index'));
  return table.pools[poolIndex];
}

function getEntry(el) {
  let poolIndex = parseInt($(el).closest('.pool').attr('data-index'));
  let entryIndex = parseInt($(el).closest('.entry').attr('data-index'));
  return table.pools[poolIndex].entries[entryIndex];
}

function addPool(el) {
  table.pools.push({
    rolls: 1,
    entries: []
  });
  invalidated();
}

function removePool(el) {
  let poolIndex = parseInt($(el).closest('.pool').attr('data-index'));
  if (poolIndex === 0) {
    table.pools.shift();
  } else {
    table.pools.splice(poolIndex, poolIndex);
  }
  invalidated();
}

function addEntry(el) {
  getPool(el).entries.push({
    type: "minecraft:item",
    name: "minecraft:stone"
  });
  invalidated();
}

function removeEntry(el) {
  let entryIndex = parseInt($(el).closest('.entry').attr('data-index'));
  if (entryIndex === 0) {
    getPool(el).entries.shift();
  } else {
    getPool(el).entries.splice(entryIndex, entryIndex);
  }
  invalidated();
}

function getRangeField($el, type) {
  if (type === 'exact') {
    return parseInt($el.find('.exact').val());
  } else if (type === 'range') {
    let data = {};
    let min = $el.find('.range.min').val();
    let max = $el.find('.range.max').val();
    if (min) data.min = parseInt(min);
    if (max) data.max = parseInt(max);
    return data;
  } else if (type === 'binomial') {
    let data = {type: "minecraft:binomial"};
    let n = $el.find('.binomial.n').val();
    let p = $el.find('.binomial.p').val();
    if (n) data.n = parseInt(n);
    if (p) data.p = parseFloat(p);
    return data;
  }
}

function switchRollsType(el, type) {
  $(el).closest('.rolls').attr('data-type', type);
  updateRollsField(el);
}

function updateRollsField(el) {
  let type = $(el).closest('.rolls').attr('data-type');
  let data = getRangeField($(el).closest('.rolls'), type);
  getPool(el).rolls = data;
  invalidated();
}

function switchBonusRollsType(el, type) {
  $(el).closest('.bonus-rolls').attr('data-type', type);
  updateBonusRollsField(el);
}

function updateBonusRollsField(el) {
  let type = $(el).closest('.bonus-rolls').attr('data-type');
  let data = getRangeField($(el).closest('.bonus-rolls'), type);
  if (type ==='exact' && isNaN(data)) {
    delete getPool(el).bonus_rolls;
  } else {
    getPool(el).bonus_rolls = data;
  }
  invalidated();
}

function updateEntryType(el) {
  let entry = getEntry(el);
  entry.type = $(el).val();
  if (entry.type === 'minecraft:dynamic') {
    entry.name = 'minecraft:contents';
  }
  invalidated();
}

function updateEntryName(el) {
  let entry = getEntry(el);
  if (entry.type === 'minecraft:dynamic') {
    entry.name = 'minecraft:contents';
  } else {
    entry.name = $(el).val();
  }
  invalidated();
}

function updateEntryWeight(el) {
  let weight = parseInt($(el).val());
  if (isNaN(weight)) {
    delete getEntry(el).weight;
  } else {
    getEntry(el).weight = weight;
  }
  invalidated();
}

function updateEntryQuality(el) {
  let quality = parseInt($(el).val());
  if (isNaN(quality)) {
    delete getEntry(el).quality;
  } else {
    getEntry(el).quality = quality;
  }
  invalidated();
}

function updateTableType() {
  table.type = $('#tableType').val();
  invalidated();
}

function updateLuckBased() {
  luck_based = $('#luckBased').prop('checked');
  invalidated();
}

function updateSouce() {
  $('#source').removeClass('invalid');
  try {
    table = JSON.parse($('#source').val());
  } catch {
    $('#source').addClass('invalid');
    return;
  }
  invalidated();
}

function updateIndentation(el) {
  if (el.value === 'tab') {
    indentation = '\t';
  } else {
    indentation = parseInt(el.value);
  }
  invalidated();
}

function copySource(el) {
  $('#source').get()[0].select();
  document.execCommand('copy');
}

function invalidated() {
  generateStructure();
  $('#source').val(JSON.stringify(table, null, indentation));
}

function generateStructure() {
  $('#structure').html('');

  for (let i = 0; i < table.pools.length; i += 1) {
    let pool = table.pools[i];
    let $pool = $('#poolTemplate').clone();
    $pool.removeAttr('id').attr('data-index', i);

    // Rolls
    if (!pool.rolls) {
      pool.rolls = 1;
    }
    let $rolls = $pool.find('.rolls');
    if (typeof pool.rolls === 'object') {
      if (pool.rolls.type && pool.rolls.type.match(/(minecraft:)?binomial/)) {
        $rolls.attr('data-type', 'binomial');
        $rolls.find('.binomial').removeClass('d-none');
        $rolls.find('.binomial.n').val(pool.rolls.n);
        $rolls.find('.binomial.p').val(pool.rolls.p);
      } else {
        $rolls.attr('data-type', 'range');
        $rolls.find('.range').removeClass('d-none');
        $rolls.find('.range.min').val(pool.rolls.min);
        $rolls.find('.range.max').val(pool.rolls.max);
      }
    } else {
      $rolls.attr('data-type', 'exact');
      $rolls.find('.exact').removeClass('d-none');
      $rolls.find('.exact').val(pool.rolls);
    }

    // Bonus Rolls
    let $bonus_rolls = $pool.find('.bonus-rolls');
    if (pool.bonus_rolls) {
      luck_based = true;
      if (typeof pool.bonus_rolls === 'object') {
        if (pool.bonus_rolls.type && pool.bonus_rolls.type.match(/(minecraft:)?binomial/)) {
          $bonus_rolls.attr('data-type', 'binomial');
          $bonus_rolls.find('.binomial').removeClass('d-none');
          $bonus_rolls.find('.binomial.n').val(pool.bonus_rolls.n);
          $bonus_rolls.find('.binomial.p').val(pool.bonus_rolls.p);
        } else {
          $bonus_rolls.attr('data-type', 'range');
          $bonus_rolls.find('.range').removeClass('d-none');
          $bonus_rolls.find('.range.min').val(pool.bonus_rolls.min);
          $bonus_rolls.find('.range.max').val(pool.bonus_rolls.max);
        }
      } else {
        $bonus_rolls.attr('data-type', 'exact');
        $bonus_rolls.find('.exact').removeClass('d-none');
        $bonus_rolls.find('.exact').val(pool.bonus_rolls);
      }
    } else {
      $bonus_rolls.find('.exact').removeClass('d-none');
    }
    if (!luck_based) {
      $pool.find('.bonus-rolls').addClass('d-none');
    }

    // Entries
    for (let j = 0; j < pool.entries.length; j += 1) {
      let entry = pool.entries[j];
      let $entry = $('#entryTemplate').clone();
      $entry.removeAttr('id').attr('data-index', j);

      $entry.find('.entry-type').val(entry.type);
      if (entry.type === 'minecraft:item' || entry.type === 'minecraft:tag' || entry.type === 'minecraft:loot_table' || entry.type === 'minecraft:dynamic') {
        $entry.find('.entry-name').removeClass('d-none');
        if (entry.type === 'minecraft:dynamic') {
          entry.name = 'minecraft:contents';
        }
        $entry.find('.entry-name input').val(entry.name);
      }
      $entry.find('.entry-weight').removeClass('d-none');
      if (luck_based) {
        $entry.find('.entry-quality').removeClass('d-none');
      } else {
        $entry.find('.entry-quality').addClass('d-none');
      }
      if (entry.weight) {
        $entry.find('.entry-weight input').val(entry.weight);
      }
      if (entry.quality) {
        luck_based = true;
        $entry.find('.entry-quality input').val(entry.quality);
      }
      if (entry.type === 'minecraft:alternatives' || entry.type === 'minecraft:sequence' || entry.type === 'minecraft:group') {
        delete entry.name;
        $entry.find('.entry-children').removeClass('d-none');
      }

      $pool.children('.card-body').append($entry);
    }
    $('#structure').append($pool);

    $('#luck-based').attr('checked', luck_based);
  }
}