初始化

easyflow-ui-usercenter/packages/effects/common-ui/src/components/icon-picker/icons.ts

@@ -0,0 +1,56 @@
+import type { Recordable } from '@easyflow/types';
+
+/**
+ * 一个缓存对象，在不刷新页面时，无需重复请求远程接口
+ */
+export const ICONS_MAP: Recordable<string[]> = {};
+
+interface IconifyResponse {
+  prefix: string;
+  total: number;
+  title: string;
+  uncategorized?: string[];
+  categories?: Recordable<string[]>;
+  aliases?: Recordable<string>;
+}
+
+const PENDING_REQUESTS: Recordable<Promise<string[]>> = {};
+
+/**
+ * 通过Iconify接口获取图标集数据。
+ * 同一时间多个图标选择器同时请求同一个图标集时，实际上只会发起一次请求（所有请求共享同一份结果）。
+ * 请求结果会被缓存，刷新页面前同一个图标集不会再次请求
+ * @param prefix 图标集名称
+ * @returns 图标集中包含的所有图标名称
+ */
+export async function fetchIconsData(prefix: string): Promise<string[]> {
+  if (Reflect.has(ICONS_MAP, prefix) && ICONS_MAP[prefix]) {
+    return ICONS_MAP[prefix];
+  }
+  if (Reflect.has(PENDING_REQUESTS, prefix) && PENDING_REQUESTS[prefix]) {
+    return PENDING_REQUESTS[prefix];
+  }
+  PENDING_REQUESTS[prefix] = (async () => {
+    try {
+      const controller = new AbortController();
+      const timeoutId = setTimeout(() => controller.abort(), 1000 * 10);
+      const response: IconifyResponse = await fetch(
+        `https://api.iconify.design/collection?prefix=${prefix}`,
+        { signal: controller.signal },
+      ).then((res) => res.json());
+      clearTimeout(timeoutId);
+      const list = response.uncategorized || [];
+      if (response.categories) {
+        for (const category in response.categories) {
+          list.push(...(response.categories[category] || []));
+        }
+      }
+      ICONS_MAP[prefix] = list.map((v) => `${prefix}:${v}`);
+    } catch (error) {
+      console.error(`Failed to fetch icons for prefix ${prefix}:`, error);
+      return [] as string[];
+    }
+    return ICONS_MAP[prefix];
+  })();
+  return PENDING_REQUESTS[prefix];
+}