/**
 * AKSRT After-Sale — 前台售后弹窗（申请 / 超时效提示 / 售后详细）
 *
 * 与「禁封/举报」链路同构（report.js / user-ban.js）：
 *   - [data-aksrt-after-sale-apply]  → 申请售后弹窗（超时效则改为超时效提示弹窗）
 *   - [data-aksrt-after-sale-detail] → 售后详细弹窗（可再次申请 / 不可再申请提示）
 *   两个入口的 data-* 属性携带订单与售后状态载荷（同 report.js 的 data-aksrt-report），
 *   点击即同步弹窗，不做前置请求（避免首次点击无反馈）。
 *   - 提交走 REST /aksrt/v1/orders/{order_number}/after-sale
 *   - 举证图片走 /orders/{order_number}/after-sale/upload-image（复用评论图片上传校验）
 *
 * 按钮形态由订单视图模型的 after_sale 状态决定（UserOrders::after_sale_state）：
 * 已申请 → 售后详细；未申请且在时效内 → 申请售后；超时效 → 申请售后（点击弹超时效提示）。
 * 弹窗统一经 AksrtModalRuntime.open 直出 HTML：桌面为主题 modal-mini 几何
 * （400px）+ 蓝色炫彩标题区（modal-colorful-header colorful-bg jb-blue），
 * 移动端由 mobileBottom 底部抽屉接管。
 *
 * @package AKSRT
 */

(function () {
  'use strict';

  var API_ROOT = (function () {
    var d = window.aksrtData || {};
    var raw = d.apiUrl || d.restUrl || d.rest_url || '/index.php?rest_route=/aksrt/v1';
    return String(raw).replace(/\/$/, '');
  })();
  var NONCE = (window.aksrtData && window.aksrtData.restNonce) || '';
  var MAX_IMAGES = 3;
  // 不可再申请售后（工单未结束 / 已完结 / 超过时效）时的固定提示。
  var REAPPLY_BLOCKED_TEXT = '该无法再次申请售后，该订单已售后，暂不支持再次申请售后。';

  var STATUS_LABELS = {
    pending: '待审核',
    processing: '处理中',
    approved: '已通过',
    rejected: '已拒绝',
    cancelled: '已取消',
    completed: '已完成',
  };

  function settings() {
    var d = window.aksrtData && window.aksrtData.afterSale;
    return d && typeof d === 'object' ? d : {};
  }

  function reasonOptions() {
    var list = settings().reasons;
    if (!Array.isArray(list)) return [];
    return list
      .map(function (item) {
        return {
          slug: String((item && (item.slug || item.value)) || ''),
          name: String((item && (item.name || item.label || item.t)) || ''),
        };
      })
      .filter(function (item) { return item.name !== ''; });
  }

  function materialOptions() {
    var list = settings().materials;
    if (!Array.isArray(list)) return [];
    return list.map(function (item) { return String(item == null ? '' : item); })
      .filter(function (text) { return text !== ''; });
  }

  function escapeHtml(value) {
    return String(value == null ? '' : value)
      .replace(/&/g, '&')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#39;');
  }

  function colorfulHeader(title, icon) {
    return '<div class="modal-colorful-header colorful-bg jb-blue">' +
      '<button type="button" class="close" data-aksrt-modal-close aria-label="关闭"><svg class="ic-close" aria-hidden="true"><use xlink:href="#icon-close"></use></svg></button>' +
      '<div class="colorful-make"></div>' +
      '<div class="text-center"><div class="em2x"><i class="fa fas ' + escapeHtml(icon) + '" aria-hidden="true"></i></div>' +
      '<div class="mt10 em12 padding-w10">' + escapeHtml(title) + '</div></div></div>';
  }

  function orderAmountText(order) {
    var raw = String(order && order.amount != null ? order.amount : '0');
    if (order && order.is_points) {
      return escapeHtml(String(order.currency_symbol || '积分')) + ' ' + (/^\d+$/.test(raw) ? raw : '0');
    }
    return '¥' + raw;
  }

  function aftersaleAmountText(value, order) {
    var amount = String(value == null ? '' : value);
    return order && order.is_points ? amount + ' ' + String((order && order.currency_symbol) || '积分') : '¥' + amount;
  }

  function orderSummaryHtml(order) {
    if (!order) return '';
    return '<div class="muted-box padding-10 mb20 em09 aksrt-after-sale-summary">' +
      '<div class="aksrt-after-sale-summary__row"><span class="muted-2-color">商品</span>' +
      '<span class="aksrt-after-sale-summary__value">' + escapeHtml(order.product_name || '订单') + '</span></div>' +
      '<div class="aksrt-after-sale-summary__row"><span class="muted-2-color">订单号</span>' +
      '<span class="aksrt-after-sale-summary__value">' + escapeHtml(order.order_number || '') + '</span></div>' +
      '<div class="aksrt-after-sale-summary__row"><span class="muted-2-color">实付</span>' +
      '<span class="aksrt-after-sale-summary__value">' + orderAmountText(order) + '</span></div>' +
      '</div>';
  }

  function buildApplyHtml(order) {
    var cfg = settings();
    var reasons = reasonOptions();
    var materials = materialOptions();

    var html = '<div class="aksrt-after-sale-apply-modal">';
    html += colorfulHeader('申请售后', 'fa-undo-alt');
    html += '<form class="aksrt-after-sale-form" data-aksrt-after-sale-order="' + escapeHtml((order && order.order_number) || '') + '" novalidate>';
    // 滚动容器与禁封申诉弹窗一致：no-scrollbar 完全隐藏滚动条（含细滚动条）+ 50vh 内层滚动。
    html += '<div class="scroll-y no-scrollbar max-vh5">';
    html += orderSummaryHtml(order);

    if (reasons.length) {
      html += '<div class="mb20">';
      html += '<div class="em09 muted-2-color mb6">售后原因</div>';
      html += '<div class="form-radio form-but-radio">';
      reasons.forEach(function (reason) {
        html += '<span class="mr6 mb6 badg p2-10 pointer" data-aksrt-after-sale-reason="' + escapeHtml(reason.name) + '" data-reason-slug="' + escapeHtml(reason.slug) + '">' + escapeHtml(reason.name) + '</span>';
      });
      html += '</div></div>';
    }

    materials.forEach(function (label) {
      html += '<div class="mb10"><div class="muted-2-color mb6">' + escapeHtml(label) + '</div>' +
        '<input class="form-control" type="text" maxlength="120" data-aksrt-after-sale-material="' + escapeHtml(label) + '" placeholder="请输入' + escapeHtml(label) + '"></div>';
    });

    var placeholder = String(cfg.reasonPlaceholder || '必填，请您详细填写申请原因');
    html += '<div class="mb10"><div class="muted-2-color mb6">申请说明</div>' +
      '<textarea class="form-control" name="reason" rows="3" maxlength="2000" required placeholder="' + escapeHtml(placeholder) + '"></textarea></div>';

    if (cfg.imgEnabled) {
      html += '<div class="form-upload mb10">' +
        '<div class="em09 muted-2-color mb6">上传图片</div>' +
        '<div class="preview"><div class="add" data-aksrt-after-sale-add role="button" tabindex="0" aria-label="上传图片"></div></div>' +
        '<input class="hide" type="file" accept="image/gif,image/jpeg,image/jpg,image/png,image/webp" data-aksrt-after-sale-file>' +
        '<div class="muted-2-color em09 mt6">最多上传 ' + MAX_IMAGES + ' 张图片</div>' +
        '</div>';
    }

    // 申请售后说明（后台 after_sale_desc，服务端已 wp_kses_post）。
    var desc = String(cfg.desc || '');
    if (desc) {
      html += '<div class="em09 padding-h10 muted-box mb10">' + desc + '</div>';
    }

    html += '</div>';
    html += '<div class="but-average modal-buts">' +
      '<button type="button" class="but" data-aksrt-modal-close>取消</button>' +
      '<button type="button" class="but c-blue" data-aksrt-after-sale-submit><i class="fa fas fa-check" aria-hidden="true"></i>确认提交</button>' +
      '</div>';
    html += '</form></div>';
    return html;
  }

  function detailRow(label, value) {
    if (value === '' || value == null) return '';
    return '<div class="aksrt-after-sale-detail__row"><span class="muted-2-color">' + escapeHtml(label) + '</span>' +
      '<span class="aksrt-after-sale-detail__value">' + escapeHtml(value) + '</span></div>';
  }

  function buildDetailHtml(order) {
    var afterSale = (order && order.after_sale) || {};
    var latest = afterSale.latest || {};
    var status = String(latest.status || '');

    var html = '<div class="aksrt-after-sale-detail-modal">';
    html += colorfulHeader('售后详细', 'fa-clipboard-list');
    html += '<div class="scroll-y no-scrollbar max-vh5 aksrt-after-sale-detail__body">';
    html += orderSummaryHtml(order);

    html += '<div class="aksrt-after-sale-detail__statusRow">' +
      '<span class="muted-2-color em09">售后状态</span>' +
      '<span class="badg p2-10 aksrt-after-sale-status is-' + escapeHtml(status) + '">' + escapeHtml(STATUS_LABELS[status] || status) + '</span>' +
      '</div>';

    html += '<div class="aksrt-after-sale-detail__rows">';
    html += detailRow('申请时间', String(latest.created_at || ''));
    html += detailRow('退款金额', aftersaleAmountText(latest.refund_amount, order));
    html += detailRow('处理备注', String(latest.admin_note || ''));
    html += detailRow('完成时间', String(latest.completed_at || ''));
    html += '</div>';

    if (latest.reason) {
      html += '<div class="mb10"><div class="muted-2-color em09 mb6">申请原因</div>' +
        '<div class="em09 aksrt-after-sale-reason-text">' + escapeHtml(latest.reason).replace(/\r\n|\r|\n/g, '<br>') + '</div></div>';
    }

    var images = Array.isArray(latest.images) ? latest.images : [];
    if (images.length) {
      html += '<div class="mb10"><div class="muted-2-color em09 mb6">举证图片</div><div class="aksrt-after-sale-images">';
      images.forEach(function (url) {
        html += '<a href="' + escapeHtml(url) + '" target="_blank" rel="noopener noreferrer"><img src="' + escapeHtml(url) + '" alt=""></a>';
      });
      html += '</div></div>';
    }

    html += '</div>';

    if (afterSale.can_reapply) {
      html += '<div class="but-average modal-buts">' +
        '<button type="button" class="but" data-aksrt-modal-close>关闭</button>' +
        '<button type="button" class="but c-blue" data-aksrt-after-sale-reapply data-aksrt-after-sale-payload="' + escapeHtml(JSON.stringify(order)) + '"><i class="fa fas fa-undo-alt" aria-hidden="true"></i>再次申请售后</button>' +
        '</div>';
    } else {
      // 不可再申请售后（工单未结束 / 已完结 / 超过时效）：仅提示 + 我知道了。
      html += '<div class="aksrt-after-sale-detail__blocked">' +
        '<div class="c-yellow box-body">' + escapeHtml(REAPPLY_BLOCKED_TEXT) + '</div>' +
        '<div class="but-average modal-buts mt10"><button type="button" class="but c-blue" data-aksrt-modal-close>我知道了</button></div>' +
        '</div>';
    }

    html += '</div>';
    return html;
  }

  function buildExpiredHtml() {
    var text = String(settings().expiredText || '抱歉，您的订单已超过售后申请时效');
    var html = '<div class="aksrt-after-sale-expired-modal">';
    html += colorfulHeader('售后提示', 'fa-clock');
    // 超过时效提示（后台 after_sale_expired_text，服务端已 wp_kses_post，支持 HTML）。
    html += '<div class="aksrt-after-sale-expired__body em09">' + text + '</div>';
    html += '<div class="but-average modal-buts"><button type="button" class="but c-blue" data-aksrt-modal-close>我知道了</button></div>';
    html += '</div>';
    return html;
  }

  function openModal(options) {
    if (!window.AksrtModalRuntime || typeof window.AksrtModalRuntime.open !== 'function') {
      notyf('售后组件加载失败，请刷新页面后重试', 'danger');
      return null;
    }
    var shell = window.AksrtModalRuntime.open({
      html: options.html,
      className: options.className,
      kind: options.kind,
      mobileBottom: true,
    });
    bindShell(shell);
    return shell;
  }

  function openApply(order) {
    return openModal({
      html: buildApplyHtml(order),
      className: 'aksrt-after-sale-apply-modal',
      kind: 'after-sale-apply',
    });
  }

  function openDetail(order) {
    return openModal({
      html: buildDetailHtml(order),
      className: 'aksrt-after-sale-detail-modal',
      kind: 'after-sale-detail',
    });
  }

  function openExpired() {
    return openModal({
      html: buildExpiredHtml(),
      className: 'aksrt-after-sale-expired-modal',
      kind: 'after-sale-expired',
    });
  }

  /**
   * 解析按钮 data-* 上的售后载荷（与举报链路 data-aksrt-report 同模式）：
   * 入口数据随列表一起渲染，点击即可同步弹窗，不做前置请求。
   */
  function parsePayload(raw) {
    if (!raw) return null;
    try {
      var data = JSON.parse(raw);
      return data && typeof data === 'object' ? data : null;
    } catch (error) {
      return null;
    }
  }

  // 申请售后入口：超时效 → 超时效提示；已申请 → 售后详细；否则 → 申请表单。
  function openApplyFlow(payload) {
    var afterSale = payload && payload.after_sale ? payload.after_sale : null;
    if (!payload || !afterSale || !afterSale.enabled) {
      notyf('售后申请暂不可用', 'danger');
      return;
    }
    if (afterSale.expired) { openExpired(); return; }
    if (afterSale.has_application) { openDetail(payload); return; }
    openApply(payload);
  }

  function openDetailFlow(payload) {
    var afterSale = payload && payload.after_sale ? payload.after_sale : null;
    if (!payload || !afterSale || !afterSale.enabled || !afterSale.has_application) {
      notyf('暂无售后记录', 'danger');
      return;
    }
    openDetail(payload);
  }

  function collectImages(shell) {
    return Array.prototype.map.call(
      shell.querySelectorAll('.preview .preview-item img'),
      function (img) { return img.getAttribute('src') || ''; }
    ).filter(function (url) { return url !== ''; });
  }

  function uploadImage(shell, file) {
    var form = shell.querySelector('[data-aksrt-after-sale-order]');
    var preview = shell.querySelector('.form-upload .preview');
    var orderNumber = form ? form.getAttribute('data-aksrt-after-sale-order') : '';
    if (!preview || !orderNumber) return Promise.resolve();
    if (collectImages(shell).length >= MAX_IMAGES) {
      notyf('最多上传 ' + MAX_IMAGES + ' 张图片', 'danger');
      return Promise.resolve();
    }

    var body = new FormData();
    body.append('image', file);

    return window.fetch(API_ROOT + '/orders/' + encodeURIComponent(orderNumber) + '/after-sale/upload-image', {
      method: 'POST',
      headers: { 'X-WP-Nonce': NONCE },
      body: body,
    })
      .then(function (res) { return res.json(); })
      .then(function (result) {
        var url = result && result.success && result.data && result.data.url;
        if (!url) {
          notyf((result && result.message) || '图片上传失败', 'danger');
          return;
        }
        if (collectImages(shell).length >= MAX_IMAGES) {
          notyf('最多上传 ' + MAX_IMAGES + ' 张图片', 'danger');
          return;
        }
        var item = document.createElement('div');
        item.className = 'preview-item';
        var img = document.createElement('img');
        img.src = url;
        img.alt = '';
        var remove = document.createElement('button');
        remove.type = 'button';
        remove.className = 'remove';
        remove.setAttribute('data-aksrt-after-sale-image-remove', '');
        remove.setAttribute('aria-label', '删除图片');
        remove.innerHTML = '&times;';
        remove.addEventListener('click', function () { item.remove(); });
        item.appendChild(img);
        item.appendChild(remove);
        preview.insertBefore(item, preview.querySelector('.add'));
      })
      .catch(function () {
        notyf('图片上传失败，请重试', 'danger');
      });
  }

  function composeReason(shell) {
    var parts = [];
    var active = shell.querySelector('[data-aksrt-after-sale-reason].active');
    if (active) {
      var label = active.getAttribute('data-aksrt-after-sale-reason') || '';
      if (label) parts.push(label);
    }
    var materials = [];
    Array.prototype.forEach.call(shell.querySelectorAll('[data-aksrt-after-sale-material]'), function (input) {
      var value = String(input.value || '').trim();
      if (value === '') return;
      materials.push(String(input.getAttribute('data-aksrt-after-sale-material') || '') + '：' + value);
    });
    if (materials.length) parts.push(materials.join('\n'));
    var reasonInput = shell.querySelector('[name="reason"]');
    var reasonText = reasonInput ? String(reasonInput.value || '').trim() : '';
    if (reasonText) parts.push(reasonText);
    return parts.join('\n');
  }

  function submitApply(shell) {
    var form = shell.querySelector('[data-aksrt-after-sale-order]');
    var orderNumber = form ? form.getAttribute('data-aksrt-after-sale-order') : '';
    var reasonInput = shell.querySelector('[name="reason"]');
    var reasonText = reasonInput ? String(reasonInput.value || '').trim() : '';
    if (!reasonText) {
      notyf('请填写申请说明', 'danger');
      if (reasonInput) reasonInput.focus();
      return;
    }
    // 预置原因被后台清空时不强制选择；有配置则必须选中一项（与举报弹窗一致）。
    if (shell.querySelector('[data-aksrt-after-sale-reason]') && !shell.querySelector('[data-aksrt-after-sale-reason].active')) {
      notyf('请选择售后原因', 'danger');
      return;
    }

    var submitBtn = shell.querySelector('[data-aksrt-after-sale-submit]');
    if (submitBtn) submitBtn.disabled = true;
    notyf('正在提交售后申请…', 'load', 3000, 'aksrt-after-sale-submit');

    window.fetch(API_ROOT + '/orders/' + encodeURIComponent(orderNumber) + '/after-sale', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'X-WP-Nonce': NONCE,
      },
      body: JSON.stringify({
        reason: composeReason(shell),
        images: collectImages(shell),
      }),
    })
      .then(function (res) { return res.json(); })
      .then(function (result) {
        if (result && result.success) {
          window.AksrtModalRuntime.close('submit');
          notyf('售后申请已提交', 'success');
          if (window.AKSRTOrderCenter && typeof window.AKSRTOrderCenter.refresh === 'function') {
            window.AKSRTOrderCenter.refresh(orderNumber);
          }
        } else {
          if (submitBtn) submitBtn.disabled = false;
          notyf((result && result.message) || '售后申请提交失败', 'danger');
        }
      })
      .catch(function () {
        if (submitBtn) submitBtn.disabled = false;
        notyf('网络错误，请重试', 'danger');
      })
      .then(function () {
        var toast = document.getElementById('aksrt-after-sale-submit');
        if (toast) toast.remove();
      });
  }

  function bindShell(shell) {
    if (!shell) return;

    shell.addEventListener('click', function (event) {
      // 原因徽章：单选 active（与举报弹窗同语义，重复点击已选徽章保持选中）。
      var chip = event.target.closest('[data-aksrt-after-sale-reason]');
      if (chip) {
        event.preventDefault();
        Array.prototype.forEach.call(shell.querySelectorAll('[data-aksrt-after-sale-reason].active'), function (el) {
          el.classList.remove('active');
        });
        chip.classList.add('active');
        return;
      }

      var addBtn = event.target.closest('[data-aksrt-after-sale-add]');
      if (addBtn) {
        event.preventDefault();
        var fileInput = shell.querySelector('[data-aksrt-after-sale-file]');
        if (fileInput) fileInput.click();
        return;
      }

      var removeBtn = event.target.closest('[data-aksrt-after-sale-image-remove]');
      if (removeBtn) {
        event.preventDefault();
        var item = removeBtn.closest('.preview-item');
        if (item) item.remove();
        return;
      }

      var submitBtn = event.target.closest('[data-aksrt-after-sale-submit]');
      if (submitBtn) {
        event.preventDefault();
        submitApply(shell);
        return;
      }

      // 再次申请售后：载荷已随按钮渲染，直接开申请表单（时效/工单状态随列表刷新更新）。
      var reapplyBtn = event.target.closest('[data-aksrt-after-sale-reapply]');
      if (reapplyBtn) {
        event.preventDefault();
        var payload = parsePayload(reapplyBtn.getAttribute('data-aksrt-after-sale-payload'));
        window.AksrtModalRuntime.close('replace');
        openApplyFlow(payload);
      }
    });

    shell.addEventListener('change', function (event) {
      var fileInput = event.target.closest('[data-aksrt-after-sale-file]');
      if (!fileInput || !fileInput.files || !fileInput.files.length) return;
      Array.prototype.forEach.call(fileInput.files, function (file) {
        uploadImage(shell, file);
      });
      fileInput.value = '';
    });
  }

  function initAfterSaleButtons() {
    if (document.documentElement.dataset.aksrtAfterSaleInitialized === '1') return;
    document.documentElement.dataset.aksrtAfterSaleInitialized = '1';
    document.addEventListener('click', function (event) {
      var apply = event.target.closest('[data-aksrt-after-sale-apply]');
      if (apply) {
        event.preventDefault();
        openApplyFlow(parsePayload(apply.getAttribute('data-aksrt-after-sale-apply')));
        return;
      }
      var detail = event.target.closest('[data-aksrt-after-sale-detail]');
      if (detail) {
        event.preventDefault();
        openDetailFlow(parsePayload(detail.getAttribute('data-aksrt-after-sale-detail')));
      }
    });
  }

  jQuery(document).off('auto_fun.aksrt-after-sale').on('auto_fun.aksrt-after-sale', initAfterSaleButtons);
  // 委托监听不依赖 DOM 扫描，脚本加载时立即挂上；auto_fun 钩子保留作幂等重扫。
  initAfterSaleButtons();
})();