Migrate to kotlinx.serialization for extensions and update fetching

app/build.gradle

@@ -7,6 +7,7 @@ apply plugin: 'com.mikepenz.aboutlibraries.plugin'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
+apply plugin: 'kotlinx-serialization'
 apply plugin: 'com.github.zellius.shortcut-helper'
 
 shortcutHelper.filePath = './shortcuts.xml'
@@ -176,10 +177,12 @@ dependencies {
     // REST
     final retrofit_version = '2.9.0'
     implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
+    implementation "com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:0.8.0"
     implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
     implementation "com.squareup.retrofit2:adapter-rxjava:$retrofit_version"
 
     // JSON
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.0"
     implementation 'com.google.code.gson:gson:2.8.6'
     implementation 'com.github.salomonbrys.kotson:kotson:2.5.0'
 

app/src/main/java/eu/kanade/tachiyomi/data/updater/github/GithubRelease.kt

@@ -1,7 +1,8 @@
 package eu.kanade.tachiyomi.data.updater.github
 
-import com.google.gson.annotations.SerializedName
 import eu.kanade.tachiyomi.data.updater.Release
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
 /**
  * Release object.
@@ -11,10 +12,11 @@ import eu.kanade.tachiyomi.data.updater.Release
  * @param info log of latest release.
  * @param assets assets of latest release.
  */
+@Serializable
 class GithubRelease(
-    @SerializedName("tag_name") val version: String,
+    @SerialName("tag_name") val version: String,
-    @SerializedName("body") override val info: String,
+    @SerialName("body") override val info: String,
-    @SerializedName("assets") private val assets: List<Assets>
+    @SerialName("assets") private val assets: List<Assets>
 ) : Release {
 
     /**
@@ -28,5 +30,6 @@ class GithubRelease(
      * Assets class containing download url.
      * @param downloadLink download url.
      */
-    class Assets(@SerializedName("browser_download_url") val downloadLink: String)
+    @Serializable
+    class Assets(@SerialName("browser_download_url") val downloadLink: String)
 }

app/src/main/java/eu/kanade/tachiyomi/data/updater/github/GithubService.kt

@@ -1,8 +1,10 @@
 package eu.kanade.tachiyomi.data.updater.github
 
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
 import eu.kanade.tachiyomi.network.NetworkHelper
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType.Companion.toMediaType
 import retrofit2.Retrofit
-import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.http.GET
 import retrofit2.http.Path
 import uy.kohesive.injekt.Injekt
@@ -17,7 +19,7 @@ interface GithubService {
         fun create(): GithubService {
             val restAdapter = Retrofit.Builder()
                 .baseUrl("https://api.github.com")
-                .addConverterFactory(GsonConverterFactory.create())
+                .addConverterFactory(Json { ignoreUnknownKeys = true }.asConverterFactory("application/json".toMediaType()))
                 .client(Injekt.get<NetworkHelper>().client)
                 .build()
 

app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt

@@ -3,14 +3,16 @@ package eu.kanade.tachiyomi.extension.api
 import android.content.Context
 import com.github.salomonbrys.kotson.get
 import com.github.salomonbrys.kotson.int
-import com.github.salomonbrys.kotson.string
-import com.google.gson.JsonArray
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.extension.model.Extension
 import eu.kanade.tachiyomi.extension.model.LoadResult
 import eu.kanade.tachiyomi.extension.util.ExtensionLoader
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.int
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import uy.kohesive.injekt.injectLazy
 import java.util.Date
 
@@ -53,18 +55,18 @@ internal class ExtensionGithubApi {
     private fun parseResponse(json: JsonArray): List<Extension.Available> {
         return json
             .filter { element ->
-                val versionName = element["version"].string
+                val versionName = element.jsonObject["version"]!!.jsonPrimitive.content
                 val libVersion = versionName.substringBeforeLast('.').toDouble()
                 libVersion >= ExtensionLoader.LIB_VERSION_MIN && libVersion <= ExtensionLoader.LIB_VERSION_MAX
             }
             .map { element ->
-                val name = element["name"].string.substringAfter("Tachiyomi: ")
+                val name = element.jsonObject["name"]!!.jsonPrimitive.content.substringAfter("Tachiyomi: ")
-                val pkgName = element["pkg"].string
+                val pkgName = element.jsonObject["pkg"]!!.jsonPrimitive.content
-                val apkName = element["apk"].string
+                val apkName = element.jsonObject["apk"]!!.jsonPrimitive.content
-                val versionName = element["version"].string
+                val versionName = element.jsonObject["version"]!!.jsonPrimitive.content
-                val versionCode = element["code"].int
+                val versionCode = element.jsonObject["code"]!!.jsonPrimitive.int
-                val lang = element["lang"].string
+                val lang = element.jsonObject["lang"]!!.jsonPrimitive.content
-                val nsfw = element["nsfw"].int == 1
+                val nsfw = element.jsonObject["nsfw"]!!.jsonPrimitive.int == 1
                 val icon = "$REPO_URL_PREFIX/icon/${apkName.replace(".apk", ".png")}"
 
                 Extension.Available(name, pkgName, versionName, versionCode, lang, nsfw, apkName, icon)

app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubService.kt

@@ -1,9 +1,11 @@
 package eu.kanade.tachiyomi.extension.api
 
-import com.google.gson.JsonArray
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
 import eu.kanade.tachiyomi.network.NetworkHelper
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import okhttp3.MediaType.Companion.toMediaType
 import retrofit2.Retrofit
-import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.http.GET
 import uy.kohesive.injekt.injectLazy
 
@@ -29,7 +31,7 @@ interface ExtensionGithubService {
         fun create(): ExtensionGithubService {
             val adapter = Retrofit.Builder()
                 .baseUrl(ExtensionGithubApi.BASE_URL)
-                .addConverterFactory(GsonConverterFactory.create())
+                .addConverterFactory(Json.asConverterFactory("application/json".toMediaType()))
                 .client(client)
                 .build()
 

build.gradle.kts

@@ -27,7 +27,8 @@ buildscript {
     dependencies {
         classpath("com.github.zellius:android-shortcut-gradle-plugin:0.1.2")
         classpath("com.google.gms:google-services:4.3.3")
-        classpath("com.mikepenz.aboutlibraries.plugin:aboutlibraries-plugin:8.4.2")
+        classpath("com.mikepenz.aboutlibraries.plugin:aboutlibraries-plugin:8.3.0")
+        classpath(kotlin("serialization", version = BuildPluginsVersion.KOTLIN))
     }
     repositories {
         google()