feat: complete release preparation, 10+ ad mediation, CI/CD, and docker deployment

server/cloudflare-worker/src/index.ts

@@ -0,0 +1,96 @@
+// server/cloudflare-worker/src/index.ts
+// D3RO Voice — Global Cloudflare Edge Gateway & Proxy Worker
+
+export interface Env {
+  BACKEND_ORIGIN: string
+  SERVICE_NAME?: string
+}
+
+const CORS_HEADERS: Record<string, string> = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, PATCH, OPTIONS',
+  'Access-Control-Allow-Headers': 'Content-Type, Authorization, X-Requested-With, Range',
+  'Access-Control-Expose-Headers': 'Content-Length, Content-Range, X-D3RO-Status',
+  'Access-Control-Max-Age': '86400',
+}
+
+export default {
+  async fetch(request: Request, env: Env, _ctx: ExecutionContext): Promise<Response> {
+    const url = new URL(request.url)
+
+    // 1. Handle CORS Preflight (OPTIONS)
+    if (request.method === 'OPTIONS') {
+      return new Response(null, {
+        status: 204,
+        headers: CORS_HEADERS,
+      })
+    }
+
+    // 2. Edge Health Check Ping (/worker-health)
+    if (url.pathname === '/worker-health') {
+      return new Response(
+        JSON.stringify({
+          status: 'Healthy',
+          worker: env.SERVICE_NAME ?? 'D3RO Voice Edge Worker',
+          backendOrigin: env.BACKEND_ORIGIN,
+          timestamp: new Date().toISOString(),
+          region: request.cf?.colo ?? 'global',
+        }),
+        {
+          headers: {
+            'Content-Type': 'application/json',
+            ...CORS_HEADERS,
+          },
+        }
+      )
+    }
+
+    // 3. Construct Target Backend URL
+    const backendOrigin = (env.BACKEND_ORIGIN || 'https://d3ro.chanpaca.net').replace(/\/$/, '')
+    const targetUrl = new URL(`${url.pathname}${url.search}`, backendOrigin)
+
+    // Forward Headers
+    const forwardHeaders = new Headers(request.headers)
+    forwardHeaders.set('X-Forwarded-Host', url.host)
+    forwardHeaders.set('X-Forwarded-Proto', url.protocol.replace(':', ''))
+    forwardHeaders.set('X-D3RO-Edge-Proxy', 'Cloudflare-Worker')
+
+    try {
+      const response = await fetch(targetUrl.toString(), {
+        method: request.method,
+        headers: forwardHeaders,
+        body: request.method !== 'GET' && request.method !== 'HEAD' ? request.body : undefined,
+        redirect: 'follow',
+      })
+
+      // Clone response headers and attach CORS
+      const newHeaders = new Headers(response.headers)
+      for (const [key, value] of Object.entries(CORS_HEADERS)) {
+        newHeaders.set(key, value)
+      }
+
+      return new Response(response.body, {
+        status: response.status,
+        statusText: response.statusText,
+        headers: newHeaders,
+      })
+    } catch (err: unknown) {
+      const errorMessage = err instanceof Error ? err.message : String(err)
+      return new Response(
+        JSON.stringify({
+          error: 'EdgeGatewayError',
+          message: `Unable to connect to origin NAS backend: ${errorMessage}`,
+          targetUrl: targetUrl.toString(),
+          timestamp: new Date().toISOString(),
+        }),
+        {
+          status: 502,
+          headers: {
+            'Content-Type': 'application/json',
+            ...CORS_HEADERS,
+          },
+        }
+      )
+    }
+  },
+}