feat(api): upgrade zod to v4 and implement api docs and client generation

exportSwagger.ts

@@ -0,0 +1,62 @@
+import { registry } from '@/lib/swagger';
+import { OpenApiGeneratorV3 } from '@asteasolutions/zod-to-openapi';
+import fs from 'fs';
+import path from 'path';
+
+function recursiveFileSearch(dir: string, fileList: string[] = []): string[] {
+  const files = fs.readdirSync(dir);
+  files.forEach((file) => {
+    const filePath = path.join(dir, file);
+    if (fs.statSync(filePath).isDirectory()) {
+      recursiveFileSearch(filePath, fileList);
+    } else if (file.match(/swagger\.ts$/)) {
+      fileList.push(filePath);
+    }
+  });
+  return fileList;
+}
+
+async function exportSwagger() {
+  const filesToImport = recursiveFileSearch(
+    path.join(process.cwd(), 'src', 'app', 'api'),
+  );
+
+  await Promise.all(
+    filesToImport.map((file) => {
+      return import(file)
+        .then((module) => {
+          if (module.default) {
+            module.default(registry);
+          }
+        })
+        .catch((error) => {
+          console.error(`Error importing ${file}:`, error);
+        });
+    }),
+  );
+
+  await import('./src/app/api/validation');
+
+  const generator = new OpenApiGeneratorV3(registry.definitions);
+  const spec = generator.generateDocument({
+    openapi: '3.0.0',
+    info: {
+      version: '1.0.0',
+      title: 'MeetUP',
+      description: 'API documentation for MeetUP application',
+    },
+  });
+
+  const outputPath = path.join(
+    process.cwd(),
+    'src',
+    'generated',
+    'swagger.json',
+  );
+  fs.writeFileSync(outputPath, JSON.stringify(spec, null, 2), 'utf8');
+  console.log(`Swagger JSON generated at ${outputPath}`);
+}
+
+exportSwagger().catch((error) => {
+  console.error('Error exporting Swagger:', error);
+});