improve update checker

app/src/main/java/com/github/libretube/update/Asset.kt

@@ -0,0 +1,17 @@
+package com.github.libretube.update
+
+data class Asset(
+    val browser_download_url: String,
+    val content_type: String,
+    val created_at: String,
+    val download_count: Int,
+    val id: Int,
+    val label: Any,
+    val name: String,
+    val node_id: String,
+    val size: Int,
+    val state: String,
+    val updated_at: String,
+    val uploader: Uploader,
+    val url: String
+)

app/src/main/java/com/github/libretube/update/Author.kt

@@ -0,0 +1,22 @@
+package com.github.libretube.update
+
+data class Author(
+    val avatar_url: String,
+    val events_url: String,
+    val followers_url: String,
+    val following_url: String,
+    val gists_url: String,
+    val gravatar_id: String,
+    val html_url: String,
+    val id: Int,
+    val login: String,
+    val node_id: String,
+    val organizations_url: String,
+    val received_events_url: String,
+    val repos_url: String,
+    val site_admin: Boolean,
+    val starred_url: String,
+    val subscriptions_url: String,
+    val type: String,
+    val url: String
+)

app/src/main/java/com/github/libretube/update/Reactions.kt

@@ -0,0 +1,12 @@
+package com.github.libretube.update
+
+data class Reactions(
+    val confused: Int,
+    val eyes: Int,
+    val heart: Int,
+    val hooray: Int,
+    val laugh: Int,
+    val rocket: Int,
+    val total_count: Int,
+    val url: String
+)

app/src/main/java/com/github/libretube/update/UpdateInfo.kt

@@ -0,0 +1,24 @@
+package com.github.libretube.update
+
+data class UpdateInfo(
+    val assets: List<Asset>,
+    val assets_url: String,
+    val author: Author,
+    val body: String,
+    val created_at: String,
+    val draft: Boolean,
+    val html_url: String,
+    val id: Int,
+    val mentions_count: Int,
+    val name: String,
+    val node_id: String,
+    val prerelease: Boolean,
+    val published_at: String,
+    val reactions: Reactions,
+    val tag_name: String,
+    val tarball_url: String,
+    val target_commitish: String,
+    val upload_url: String,
+    val url: String,
+    val zipball_url: String
+)

app/src/main/java/com/github/libretube/update/Uploader.kt

@@ -0,0 +1,22 @@
+package com.github.libretube.update
+
+data class Uploader(
+    val avatar_url: String,
+    val events_url: String,
+    val followers_url: String,
+    val following_url: String,
+    val gists_url: String,
+    val gravatar_id: String,
+    val html_url: String,
+    val id: Int,
+    val login: String,
+    val node_id: String,
+    val organizations_url: String,
+    val received_events_url: String,
+    val repos_url: String,
+    val site_admin: Boolean,
+    val starred_url: String,
+    val subscriptions_url: String,
+    val type: String,
+    val url: String
+)

app/src/main/java/com/github/libretube/util/UpdateChecker.kt

@@ -1,17 +1,16 @@
 package com.github.libretube.util
 
-import android.util.Log
 import com.github.libretube.GITHUB_API_URL
 import com.github.libretube.obj.VersionInfo
-import org.json.JSONArray
+import com.github.libretube.update.UpdateInfo
-import org.json.JSONObject
+import com.google.gson.Gson
 import java.io.BufferedReader
 import java.io.InputStreamReader
 import java.net.URL
 import javax.net.ssl.HttpsURLConnection
 
 fun checkUpdate(): VersionInfo? {
-    var versionInfo: VersionInfo? = VersionInfo("", "")
+    var versionInfo: VersionInfo? = null
     // run http request as thread to make it async
     val thread = Thread {
         // otherwise crashes without internet
@@ -39,25 +38,11 @@ fun getUpdateInfo(): VersionInfo? {
     while (br.readLine().also { line = it } != null) json.append(line)
 
     // Parse and return the json data
-    val jsonRoot = JSONObject(json.toString())
+    val gson = Gson()
-    if (jsonRoot.has("tag_name") &&
+    val updateInfo = gson.fromJson(json.toString(), UpdateInfo::class.java)
-        jsonRoot.has("html_url") &&
-        jsonRoot.has("assets")
-    ) {
-        val updateUrl = jsonRoot.getString("html_url")
-        val jsonAssets: JSONArray = jsonRoot.getJSONArray("assets")
 
-        for (i in 0 until jsonAssets.length()) {
+    return VersionInfo(
-            val jsonAsset = jsonAssets.getJSONObject(i)
+        updateInfo.html_url,
-            if (jsonAsset.has("name")) {
+        updateInfo.name
-                val name = jsonAsset.getString("name")
+    )
-                if (name.endsWith(".apk")) {
-                    val tagName = jsonRoot.getString("name")
-                    Log.i("VersionInfo", "Latest version: $tagName")
-                    return VersionInfo(updateUrl, tagName)
-                }
-            }
-        }
-    }
-    return null
 }