fix: expose actionable API error details

backend/static/js/app.js

@@ -43,22 +43,71 @@ function createIdempotencyKey() {
   ].join("-");
 }
 
+function collectApiErrorMessages(value, messages = []) {
+  if (Array.isArray(value)) {
+    value.forEach((item) => collectApiErrorMessages(item, messages));
+  } else if (value && typeof value === "object") {
+    Object.values(value).forEach((item) => collectApiErrorMessages(item, messages));
+  } else if (value !== undefined && value !== null) {
+    const message = String(value).trim();
+    if (message && !messages.includes(message)) messages.push(message);
+  }
+  return messages;
+}
+
+function logApiError(error) {
+  console.error("[Hulumath API]", {
+    method: error.method,
+    path: error.path,
+    status: error.status,
+    code: error.code,
+    requestId: error.requestId,
+    details: error.details,
+  });
+}
+
 async function api(path, options = {}) {
+  const method = (options.method || "GET").toUpperCase();
+  const requestPath = `/api/v1/${path}`;
   const headers = { Accept: "application/json", ...(options.headers || {}) };
   if (options.body && typeof options.body !== "string") {
     headers["Content-Type"] = "application/json";
     options.body = JSON.stringify(options.body);
   }
-  if (!["GET", "HEAD"].includes(options.method || "GET")) headers["X-CSRFToken"] = csrfToken();
-  const response = await fetch(`/api/v1/${path}`, { credentials: "same-origin", ...options, headers });
+  if (!["GET", "HEAD"].includes(method)) headers["X-CSRFToken"] = csrfToken();
+  let response;
+  try {
+    response = await fetch(requestPath, { credentials: "same-origin", ...options, headers });
+  } catch (cause) {
+    const error = new Error("网络连接失败，请检查连接后重试");
+    error.status = null;
+    error.code = "network_error";
+    error.requestId = null;
+    error.details = null;
+    error.path = requestPath;
+    error.method = method;
+    error.cause = cause;
+    logApiError(error);
+    throw error;
+  }
   if (response.status === 204) return null;
   const payload = await response.json().catch(() => ({}));
   if (!response.ok) {
     const details = payload.error?.details;
-    const message = payload.error?.message || payload.detail ||
-      (details ? Object.values(details).flat().join(" ") : "请求失败");
+    const detailMessages = collectApiErrorMessages(details);
+    const requestId = payload.error?.request_id || response.headers.get("X-Request-ID");
+    const baseMessage = detailMessages.length
+      ? detailMessages.join("；")
+      : payload.error?.message || payload.detail || `请求失败（HTTP ${response.status}）`;
+    const message = requestId ? `${baseMessage}（请求编号：${requestId}）` : baseMessage;
     const error = new Error(message);
     error.status = response.status;
+    error.code = payload.error?.code || "request_error";
+    error.requestId = requestId;
+    error.details = details || null;
+    error.path = requestPath;
+    error.method = method;
+    logApiError(error);
     throw error;
   }
   return payload;