import { requestRollFromTokens } from './helpers.js';

const enrichers = [
  {
    id: 'mb-swade-damage',
    pattern: /@SWADEDamage\[\s*(?<roll>[\d+-dx]+)\s*\](?:\(\s*(?<ap>\d+)\s*\))?(?:\{(?<flavor>[^}]+)\})?/g,
    enricher: swadeDamageEnricher,
  },
  {
    id: 'mb-swade-trait',
    pattern:
      /@SWADERequestRoll\[\s*(?<traitType>skill|attribute),(?<traitName>[\w\s-]+)(?:,(?<tn>\d+))?\s*\](?:\(\s*(?<modVal>[-+]?\d+)(?:,(?<modDesc>[^)]+))?\s*\))?(?:\{(?<flavor>[^}]+)\})?/g,
    enricher: swadeTraitRollEnricher,
  },
];

function swadeDamageEnricher(match, options) {
  if (!match.groups) {
    return null;
  }
  const roll = match.groups.roll;
  const ap = parseInt(match.groups.ap ?? '0');
  const flavor = match.groups.flavor ?? '';
  const dataset = { roll, ap, flavor, rollType: 'damage' };
  let text = '<strong>Damage</strong>';
  if (flavor) {
    text += ` ${flavor}`;
  }
  text += `: ${roll}`;
  if (ap) {
    text += ` AP ${ap}`;
  }
  if (!game.user.isGM) {
    const span = document.createElement('span');
    span.innerHTML = text;
    return span;
  }
  const anchor = document.createElement('a');
  const classes = ['content-link', 'mb-swade-roll-damage-link', 'mb-swade-roll-link'];
  for (const cls of classes) {
    anchor.classList.add(cls);
  }
  for (let [k, v] of Object.entries(dataset)) {
    anchor.dataset[k] = v;
  }
  anchor.innerHTML = `<i class="fas fa-heart-crack"></i> ${text}`;
  return anchor;
}

function swadeTraitRollEnricher(match, options) {
  if (!match.groups) {
    return null;
  }
  const traitType = match.groups.traitType;
  const traitName = match.groups.traitName;
  if (!traitType || !traitName) {
    return null;
  }
  const tn = parseInt(match.groups.tn ?? '4');
  const modVal = parseInt(match.groups.modVal ?? '0');
  const modDesc = match.groups.modDesc ?? 'Circumstance';
  const flavor = match.groups.flavor ?? '';
  const dataset = { traitType, traitName, tn, modVal, modDesc, flavor, rollType: 'trait' };
  const displayTraitName = (traitName[0].toUpperCase() + traitName.slice(1).toLowerCase()).replace(/[-_]/, ' ');
  let text = `<strong>Request Roll:</strong> ${displayTraitName}`;
  if (modVal != 0) {
    text += ` ${modVal}`;
  }
  if (tn !== 4) {
    text += ` TN: ${tn}`;
  }
  if (flavor) {
    text += ` (${flavor})`;
  }
  const anchor = document.createElement('a');
  const classes = ['content-link', 'mb-swade-roll-request-link', 'mb-swade-roll-link'];
  for (const cls of classes) {
    anchor.classList.add(cls);
  }
  for (let [k, v] of Object.entries(dataset)) {
    anchor.dataset[k] = v;
  }
  anchor.innerHTML = `<i class="fas fa-question"></i> <i class="fas fa-dice"></i> ${text}`;
  return anchor;
}

function onSwadeRollLink(ev) {
  console.log('SWADE ROLL', ev);
  const targetElement = ev.target;
  if (!targetElement.closest('a.mb-swade-roll-link')) return;
  ev.preventDefault();
  const rollType = targetElement.dataset.rollType;
  switch (rollType) {
    case 'trait':
      return onRequestTraitRollLink(targetElement);
    case 'damage':
      return onDamageRollLink(targetElement);
  }
}

function onRequestTraitRollLink(targetElement) {
  const tokens = game.user.targets.size > 0 ? Array.from(game.user.targets) : canvas.tokens.controlled;
  console.log(tokens);
  if (tokens.length < 1) {
    foundry.ui.notifications.error('Please target or select some tokens.');
    return;
  }
  const { traitType, traitName, modDesc, flavor } = targetElement.dataset;
  const tn = parseInt(targetElement.dataset.tn);
  const modVal = parseInt(targetElement.dataset.modVal);
  const options = { targetNumber: 4, flavor };
  if (tn != 4) {
    options.targetNumber = tn;
  }
  if (modVal != 0) {
    options.mods = [{ label: modDesc, value: modVal }];
  }
  requestRollFromTokens(tokens, traitType, traitName, options);
}

function onDamageRollLink(targetElement) {
  const roll = targetElement.dataset.roll;
  const ap = parseInt(targetElement.dataset.ap);
  let flavor = targetElement.dataset.flavor;
  const options = {};
  if (ap > 0) {
    flavor = `${flavor ? flavor + ' - ' : ''}AP: ${ap}`;
    options.ap = ap;
  }
  new CONFIG.Dice.DamageRoll(roll, null, options).toMessage({ flavor });
}

export function setupEnrichers() {
  Hooks.once('ready', async () => {
    for (const enricher of enrichers) {
      CONFIG.TextEditor.enrichers.push(enricher);
    }
  });
  Hooks.on('renderApplicationV1', (application, html, data) => {
    $(html)
      .find('a.mb-swade-roll-link')
      .each((i, el) => $(el).click(onSwadeRollLink));
  });

  Hooks.on('renderApplicationV2', (application, element, context, options) => {
    element.querySelectorAll('a.mb-swade-roll-link').forEach((el) => el.addEventListener('click', onSwadeRollLink));
  });

  Hooks.on('renderChatMessageHTML', (message, html, context) => {
    html.querySelectorAll('a.mb-swade-roll-link').forEach((el) => el.addEventListener('click', onSwadeRollLink));
  });
}