feat: 瀑布流布局

Co-authored-by: Copilot <copilot@github.com>

server/utils/index.ts

@@ -10,3 +10,4 @@ export * from "./newApiTokens";
 export * from "./openai";
 export * from "./plazaPosts";
 export * from "./prisma";
+export * from "./promptPresets";

server/utils/promptPresets.ts

@@ -0,0 +1,74 @@
+// server/utils/promptPresets.ts - 预设提示词数据库查询：为前端提供可分页展示的预设列表。
+import type {
+  IPromptPresetItem,
+  IPromptPresetListData
+} from "#shared/types/openai";
+import { prisma } from "~~/server/utils/prisma";
+
+export const listPromptPresets = async ({
+  page,
+  pageSize
+}: {
+  page: number;
+  pageSize: number;
+}): Promise<IPromptPresetListData> => {
+  const where = {
+    enabled: true
+  };
+
+  const [total, records] = await Promise.all([
+    prisma.promptPreset.count({ where }),
+    prisma.promptPreset.findMany({
+      where,
+      orderBy: [
+        {
+          sortOrder: "asc"
+        },
+        {
+          id: "asc"
+        }
+      ],
+      skip: (page - 1) * pageSize,
+      take: pageSize
+    })
+  ]);
+
+  return {
+    page,
+    pageSize,
+    total,
+    items: records.map(mapPromptPresetItem)
+  };
+};
+
+const mapPromptPresetItem = (record: {
+  id: bigint;
+  sourceId: string;
+  name: string;
+  promptRaw: string;
+  prompt: string;
+  negativePrompt: string;
+  category: string;
+  tags: unknown;
+  aspectRatio: string;
+  previewUrl: string;
+  compressedPreviewUrl: string;
+  sortOrder: number;
+}): IPromptPresetItem => {
+  return {
+    id: record.id.toString(),
+    sourceId: record.sourceId,
+    name: record.name,
+    promptRaw: record.promptRaw,
+    prompt: record.prompt,
+    negativePrompt: record.negativePrompt,
+    category: record.category,
+    tags: Array.isArray(record.tags)
+      ? record.tags.filter((tag): tag is string => typeof tag === "string")
+      : [],
+    aspectRatio: record.aspectRatio,
+    previewUrl: record.previewUrl,
+    compressedPreviewUrl: record.compressedPreviewUrl,
+    sortOrder: record.sortOrder
+  };
+};