Refactors the use of Gzip

quartz/src/main/java/com/vitorpamplona/quartz/nip19Bech32/entities/NEmbed.kt

@@ -23,9 +23,7 @@ package com.vitorpamplona.quartz.nip19Bech32.entities
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip19Bech32.toNEmbed
-import java.io.ByteArrayOutputStream
-import java.util.zip.GZIPInputStream
-import java.util.zip.GZIPOutputStream
+import com.vitorpamplona.quartz.utils.GZip
 
 @Immutable
 data class NEmbed(
@@ -34,18 +32,9 @@ data class NEmbed(
     companion object {
         fun parse(bytes: ByteArray): NEmbed? {
             if (bytes.isEmpty()) return null
-            return NEmbed(Event.fromJson(ungzip(bytes)))
+            return NEmbed(Event.fromJson(GZip.decompress(bytes)))
         }
 
-        fun create(event: Event): String = gzip(event.toJson()).toNEmbed()
-
-        fun gzip(content: String): ByteArray {
-            val bos = ByteArrayOutputStream()
-            GZIPOutputStream(bos).bufferedWriter(Charsets.UTF_8).use { it.write(content) }
-            val array = bos.toByteArray()
-            return array
-        }
-
-        fun ungzip(content: ByteArray): String = GZIPInputStream(content.inputStream()).bufferedReader(Charsets.UTF_8).use { it.readText() }
+        fun create(event: Event): String = GZip.compress(event.toJson()).toNEmbed()
     }
 }

quartz/src/main/java/com/vitorpamplona/quartz/utils/GZip.kt

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.utils
+
+import java.io.ByteArrayOutputStream
+import java.util.zip.GZIPInputStream
+import java.util.zip.GZIPOutputStream
+
+class GZip {
+    companion object {
+        fun compress(content: String): ByteArray {
+            val bos = ByteArrayOutputStream()
+            GZIPOutputStream(bos).bufferedWriter(Charsets.UTF_8).use { it.write(content) }
+            return bos.toByteArray()
+        }
+
+        fun decompress(content: ByteArray): String = GZIPInputStream(content.inputStream()).bufferedReader(Charsets.UTF_8).use { it.readText() }
+    }
+}