Compression for sync

app/src/main/java/org/koitharu/kotatsu/core/network/CommonHeaders.kt

@@ -9,6 +9,7 @@ object CommonHeaders {
 	const val ACCEPT = "Accept"
 	const val CONTENT_DISPOSITION = "Content-Disposition"
 	const val COOKIE = "Cookie"
+	const val CONTENT_ENCODING = "Content-Encoding"
 
 	val CACHE_CONTROL_DISABLED: CacheControl
 		get() = CacheControl.Builder().noStore().build()

app/src/main/java/org/koitharu/kotatsu/sync/domain/SyncHelper.kt

@@ -19,6 +19,7 @@ import org.koitharu.kotatsu.core.db.MangaDatabase.Companion.TABLE_TAGS
 import org.koitharu.kotatsu.parsers.util.json.mapJSONTo
 import org.koitharu.kotatsu.parsers.util.parseJson
 import org.koitharu.kotatsu.sync.data.AccountInterceptor
+import org.koitharu.kotatsu.utils.GZipInterceptor
 import org.koitharu.kotatsu.utils.ext.toContentValues
 import org.koitharu.kotatsu.utils.ext.toJson
 import org.koitharu.kotatsu.utils.ext.toRequestBody
@@ -40,6 +41,7 @@ class SyncHelper(
 
 	private val httpClient = OkHttpClient.Builder()
 		.addInterceptor(AccountInterceptor(context, account))
+		.addInterceptor(GZipInterceptor())
 		.build()
 	private val baseUrl = context.getString(R.string.url_sync_server)
 

app/src/main/java/org/koitharu/kotatsu/utils/GZipInterceptor.kt

@@ -0,0 +1,14 @@
+package org.koitharu.kotatsu.utils
+
+import okhttp3.Interceptor
+import okhttp3.Response
+import org.koitharu.kotatsu.core.network.CommonHeaders.CONTENT_ENCODING
+
+class GZipInterceptor : Interceptor {
+
+	override fun intercept(chain: Interceptor.Chain): Response {
+		val newRequest = chain.request().newBuilder()
+		newRequest.addHeader(CONTENT_ENCODING, "gzip")
+		return chain.proceed(newRequest.build())
+	}
+}