first commit

static/shared.js

@@ -0,0 +1,53 @@
+async function api(path, options = {}) {
+  const config = {
+    method: options.method || 'GET',
+    headers: {},
+    credentials: 'same-origin'
+  };
+  if (options.json !== undefined) {
+    config.headers['Content-Type'] = 'application/json';
+    config.body = JSON.stringify(options.json);
+  } else if (options.body) {
+    config.body = options.body;
+  }
+  const response = await fetch(`/api/${path}`, config);
+  let data;
+  try {
+    data = await response.json();
+  } catch (_) {
+    data = { ok: false, message: '服务器响应异常，请刷新后重试' };
+  }
+  if (!response.ok && !data.message) data.message = `请求失败（${response.status}）`;
+  return data;
+}
+
+function toast(message, isError = false) {
+  let element = document.querySelector('#toast');
+  if (!element) {
+    element = document.createElement('div');
+    element.id = 'toast';
+    element.className = 'toast';
+    document.body.appendChild(element);
+  }
+  element.textContent = message;
+  element.classList.toggle('error', Boolean(isError));
+  element.classList.add('show');
+  clearTimeout(element.timer);
+  element.timer = setTimeout(() => element.classList.remove('show'), 3800);
+}
+
+function text(value) {
+  return String(value ?? '').replace(/[&<>"']/g, ch => ({
+    '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'
+  }[ch]));
+}
+
+function requireConfirm(message) {
+  return window.confirm(message);
+}
+
+function setButtonsDisabled(root, disabled) {
+  root.querySelectorAll('button[data-working]').forEach(button => {
+    button.disabled = disabled || button.dataset.alwaysDisabled === '1';
+  });
+}