/**
 * Welcome rewards floor — loads landing-welcome-rewards.section.html
 * and fills copy from data-* on the placeholder node.
 *
 * Placeholder example:
 * <div
 *   data-landing-welcome-rewards
 *   data-welcome-title-id="dollar-welcome-title"
 *   data-welcome-title-before="Welcome"
 *   data-welcome-title-accent="rewards"
 *   data-welcome-eyebrow="Limited-time offer"
 *   data-welcome-value="$1"
 *   data-welcome-sub="ALL CHALLENGES*"
 *   data-welcome-code-label="Use code"
 *   data-welcome-code="AIFOPROM"
 *   data-welcome-cta-text="Claim Now"
 *   data-welcome-cta-href="#register-now"
 *   data-welcome-copy-success="Code copied!"
 * ></div>
 */
(function () {
  var MODULE_URL = '/pages/modules/landing-welcome-rewards.section.html';
  var DEFAULT_COPY_SUCCESS = 'Code copied to clipboard!';
  var copyToastTimer;

  function readConfig(el) {
    return {
      titleId: el.getAttribute('data-welcome-title-id') || 'landing-welcome-title',
      titleBefore: el.getAttribute('data-welcome-title-before') || '',
      titleAccent: el.getAttribute('data-welcome-title-accent') || '',
      eyebrow: el.getAttribute('data-welcome-eyebrow') || '',
      value: el.getAttribute('data-welcome-value') || '',
      sub: el.getAttribute('data-welcome-sub') || '',
      codeLabel: el.getAttribute('data-welcome-code-label') || '',
      code: el.getAttribute('data-welcome-code') || '',
      ctaText: el.getAttribute('data-welcome-cta-text') || '',
      ctaHref: el.getAttribute('data-welcome-cta-href') || '#register-now',
      note: el.getAttribute('data-welcome-note') || '',
      copySuccess: el.getAttribute('data-welcome-copy-success') || DEFAULT_COPY_SUCCESS,
    };
  }

  function copyText(text) {
    if (!text) return Promise.resolve();
    if (navigator.clipboard && typeof navigator.clipboard.writeText === 'function') {
      return navigator.clipboard.writeText(text);
    }
    return new Promise(function (resolve, reject) {
      var ta = document.createElement('textarea');
      ta.value = text;
      ta.setAttribute('readonly', '');
      ta.style.position = 'fixed';
      ta.style.left = '-9999px';
      document.body.appendChild(ta);
      ta.select();
      try {
        if (document.execCommand('copy')) resolve();
        else reject(new Error('copy failed'));
      } catch (err) {
        reject(err);
      } finally {
        document.body.removeChild(ta);
      }
    });
  }

  function getCopyToast() {
    var toast = document.getElementById('landing-welcome-copy-toast');
    if (toast) return toast;

    toast = document.createElement('div');
    toast.id = 'landing-welcome-copy-toast';
    toast.className = 'landing-welcome-copy-toast';
    toast.setAttribute('role', 'status');
    toast.setAttribute('aria-live', 'polite');
    document.body.appendChild(toast);
    return toast;
  }

  function showCopyToast(message) {
    var toast = getCopyToast();
    toast.textContent = message;
    toast.classList.add('is-visible');
    window.clearTimeout(copyToastTimer);
    copyToastTimer = window.setTimeout(function () {
      toast.classList.remove('is-visible');
    }, 2400);
  }

  function bindPromoCodeCopy(codeEl, config) {
    if (!codeEl || !config.code) return;

    codeEl.setAttribute('aria-label', 'Copy promo code ' + config.code);

    codeEl.addEventListener('click', function () {
      copyText(config.code)
        .then(function () {
          codeEl.classList.add('is-copied');
          showCopyToast(config.copySuccess);
          window.setTimeout(function () {
            codeEl.classList.remove('is-copied');
          }, 1200);
        })
        .catch(function () {
          showCopyToast('Copy failed. Please copy manually.');
        });
    });
  }

  function setText(node, value) {
    if (!node) return;
    node.textContent = value;
  }

  function populateSection(section, config) {
    section.setAttribute('aria-labelledby', config.titleId);

    var titleEl = section.querySelector('[data-welcome-title]');
    if (titleEl) {
      titleEl.id = config.titleId;
      titleEl.textContent = '';

      if (config.titleBefore) {
        titleEl.appendChild(document.createTextNode(config.titleBefore));
      }

      if (config.titleAccent) {
        if (config.titleBefore) {
          titleEl.appendChild(document.createTextNode(' '));
        }
        var accent = document.createElement('span');
        accent.className = 'landing-accent';
        accent.textContent = config.titleAccent;
        titleEl.appendChild(accent);
      }
    }

    setText(section.querySelector('[data-welcome-eyebrow]'), config.eyebrow);
    setText(section.querySelector('[data-welcome-value]'), config.value);
    setText(section.querySelector('[data-welcome-sub]'), config.sub);

    var codeWrap = section.querySelector('[data-welcome-code-wrap]');
    if (codeWrap && (config.codeLabel || config.code)) {
      codeWrap.hidden = false;
      setText(section.querySelector('[data-welcome-code-label]'), config.codeLabel);
      var codeEl = section.querySelector('[data-welcome-code]');
      setText(codeEl, config.code);
      bindPromoCodeCopy(codeEl, config);
    }

    var cta = section.querySelector('[data-welcome-cta]');
    if (cta && config.ctaText) {
      cta.hidden = false;
      cta.textContent = config.ctaText;
      cta.href = config.ctaHref;
    }

    var note = section.querySelector('[data-welcome-note]');
    if (note && config.note) {
      note.hidden = false;
      note.textContent = config.note;
    }
  }

  function loadLandingWelcomeRewardsModule() {
    var placeholder = document.querySelector('[data-landing-welcome-rewards]');
    if (!placeholder) return;

    var config = readConfig(placeholder);
    var parent = placeholder.parentNode;

    fetch(MODULE_URL, { credentials: 'same-origin' })
      .then(function (res) {
        if (!res.ok) throw new Error('Failed to load ' + MODULE_URL);
        return res.text();
      })
      .then(function (html) {
        var wrap = document.createElement('div');
        wrap.innerHTML = html.trim();
        var section = wrap.firstElementChild;
        if (!section || !parent) return;

        populateSection(section, config);
        parent.replaceChild(section, placeholder);
        document.dispatchEvent(
          new CustomEvent('aifo:landing-welcome-rewards-ready', { detail: { config: config } })
        );
      })
      .catch(function (err) {
        console.error('[landing-welcome-rewards-module.js]', err);
      });
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', loadLandingWelcomeRewardsModule);
  } else {
    loadLandingWelcomeRewardsModule();
  }
})();