fix(admin): 修复按站点筛选时统计数据计算错误

之前当提供 siteId 参数时，SQL 查询会添加 WHERE 子句进行过滤，导致 domains 数据也只包含该站点的评论，这与预期行为不符。预期是 domains 应始终返回所有站点的统计数据，而 summary 才根据 siteId 进行过滤。

现在改为始终查询所有评论，然后在内存中根据 siteId 过滤 rowsForSummary 以计算 summary，确保 domains 包含全局数据。

cwd-api/src/api/admin/getStats.spec.ts

@@ -0,0 +1,92 @@
+import { describe, it, expect, vi } from 'vitest';
+import { getStats } from './getStats';
+
+describe('getStats siteId filtering behavior', () => {
+	const createMockContext = (rows: any[], siteId?: string) => {
+		const allMock = vi.fn().mockResolvedValue({ results: rows });
+		const prepareMock = vi.fn().mockReturnValue({
+			all: allMock
+		});
+
+		const c = {
+			req: {
+				query: (key: string) => {
+					if (key === 'siteId') return siteId;
+					return undefined;
+				}
+			},
+			env: {
+				CWD_DB: {
+					prepare: prepareMock
+				}
+			},
+			json: vi.fn()
+		} as any;
+
+		return { c, prepareMock, allMock };
+	};
+
+	it('returns global domains while summary is filtered by siteId', async () => {
+		const now = Date.now();
+		const baseDay = new Date(now);
+		baseDay.setUTCHours(0, 0, 0, 0);
+		const today = baseDay.getTime();
+
+		const rows = [
+			{
+				created: today,
+				status: 'approved',
+				site_id: 'blog'
+			},
+			{
+				created: today,
+				status: 'pending',
+				site_id: 'docs'
+			},
+			{
+				created: today,
+				status: 'rejected',
+				site_id: ''
+			}
+		];
+
+		const { c } = createMockContext(rows, 'blog');
+
+		await getStats(c);
+
+		expect(c.json).toHaveBeenCalledTimes(1);
+		const response = (c.json as any).mock.calls[0][0];
+
+		expect(response.summary).toEqual({
+			total: 1,
+			approved: 1,
+			pending: 0,
+			rejected: 0
+		});
+
+		expect(response.domains).toEqual([
+			{
+				domain: 'blog',
+				total: 1,
+				approved: 1,
+				pending: 0,
+				rejected: 0
+			},
+			{
+				domain: 'docs',
+				total: 1,
+				approved: 0,
+				pending: 1,
+				rejected: 0
+			},
+			{
+				domain: 'default',
+				total: 1,
+				approved: 0,
+				pending: 0,
+				rejected: 1
+			}
+		]);
+	});
+});
+

cwd-api/src/api/admin/getStats.ts

@@ -17,15 +17,9 @@ export const getStats = async (c: Context<{ Bindings: Bindings }>) => {
 		const rawSiteId = c.req.query('siteId');
 		const siteId = rawSiteId && rawSiteId !== 'default' ? rawSiteId : null;
 
-		let sql = 'SELECT created, status, site_id FROM Comment';
-		const params: any[] = [];
-
-		if (siteId) {
-			sql += ' WHERE site_id = ?';
-			params.push(siteId);
-		}
-
-		const { results } = await c.env.CWD_DB.prepare(sql).bind(...params).all<{
+		const { results } = await c.env.CWD_DB.prepare(
+			'SELECT created, status, site_id FROM Comment'
+		).all<{
 			created: number;
 			status: string;
 			site_id: string | null;
@@ -65,7 +59,16 @@ export const getStats = async (c: Context<{ Bindings: Bindings }>) => {
 			} else if (row.status === 'rejected') {
 				counts.rejected += 1;
 			}
+		}
 
+		const rowsForSummary = siteId
+			? results.filter((row) => {
+					const key = row.site_id && row.site_id.trim() ? row.site_id.trim() : 'default';
+					return key === siteId;
+			  })
+			: results;
+
+		for (const row of rowsForSummary) {
 			summary.total += 1;
 			if (row.status === 'approved') {
 				summary.approved += 1;