feat: 添加获取视觉规则 API

src/app/api/keyword-cloud/rules/route.ts

@@ -0,0 +1,49 @@
+import { NextResponse } from 'next/server';
+import { getVisualStyleRules } from '@/hooks/useKeywordCloud';
+
+export const dynamic = 'force-dynamic';
+
+/**
+ * GET /api/keyword-cloud/rules
+ * 获取视觉样式规则配置
+ */
+export async function GET(request: Request) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const enabled = searchParams.get('enabled');
+
+    const rules = await getVisualStyleRules(
+      enabled !== null ? { enabled: enabled === 'true' } : undefined
+    );
+
+    // 转换规则格式以匹配前端期望
+    const formattedRules = rules.map(rule => ({
+      id: rule.id,
+      name: rule.name,
+      minScore: rule.minScore,
+      maxScore: rule.maxScore,
+      visualConfig: {
+        color: rule.color,
+        size: rule.size,
+        border: rule.border,
+        rotation: rule.rotation,
+      },
+      priority: rule.priority,
+      enabled: rule.enabled,
+    }));
+
+    return NextResponse.json({
+      success: true,
+      rules: formattedRules,
+    });
+  } catch (error) {
+    console.error('Error fetching visual style rules:', error);
+    return NextResponse.json(
+      {
+        success: false,
+        error: 'Failed to fetch rules',
+      },
+      { status: 500 }
+    );
+  }
+}