restructure

android/src/main/java/com/rssuper/services/FetchResult.kt

@@ -0,0 +1,31 @@
+package com.rssuper.services
+
+import okhttp3.CacheControl
+import okhttp3.Response
+
+data class FetchResult(
+    val feedXml: String,
+    val url: String,
+    val cacheControl: CacheControl?,
+    val isCached: Boolean,
+    val etag: String? = null,
+    val lastModified: String? = null
+) {
+    companion object {
+        fun fromResponse(response: Response, url: String, isCached: Boolean = false): FetchResult {
+            val body = response.body?.string() ?: ""
+            val cacheControl = response.cacheControl
+            val etag = response.header("ETag")
+            val lastModified = response.header("Last-Modified")
+            
+            return FetchResult(
+                feedXml = body,
+                url = url,
+                cacheControl = cacheControl,
+                isCached = isCached,
+                etag = etag,
+                lastModified = lastModified
+            )
+        }
+    }
+}