perform resources download within launcher

app/src/main/java/com/geode/launcher/updater/Release.kt

@@ -62,6 +62,11 @@ abstract class Downloadable {
      * Release download link for the current platform
      */
     abstract fun getDownload(): DownloadableAsset?
+
+    /**
+     * Resources download link for current platform.
+     */
+    abstract fun getResourcesDownload(): DownloadableAsset?
 }
 
 class DownloadableGitHubLoaderRelease(private val release: Release) : Downloadable() {
@@ -101,6 +106,18 @@ class DownloadableGitHubLoaderRelease(private val release: Release) : Downloadab
             size = download.size.toLong()
         )
     }
+
+    override fun getResourcesDownload(): DownloadableAsset? {
+        val download = release.assets.find {
+            it.name == "resources.zip"
+        } ?: return null
+
+        return DownloadableAsset(
+            url = download.browserDownloadUrl,
+            filename = download.name,
+            size = download.size.toLong()
+        )
+    }
 }
 
 class DownloadableLauncherRelease(val release: Release) : Downloadable() {
@@ -126,8 +143,7 @@ class DownloadableLauncherRelease(val release: Release) : Downloadable() {
              * 0     | 0        | 1
              * surprise! it's an xnor
              */
-
+            asset.name.endsWith("apk") && asset.name.contains("android32") == use32BitPlatform
-            (asset.name.contains("android32")) == use32BitPlatform
         }
     }
 
@@ -139,6 +155,10 @@ class DownloadableLauncherRelease(val release: Release) : Downloadable() {
             size = download.size.toLong()
         )
     }
+
+    override fun getResourcesDownload(): DownloadableAsset? {
+        return null
+    }
 }
 
 class DownloadableLoaderRelease(private val version: LoaderVersion) : Downloadable() {
@@ -151,11 +171,19 @@ class DownloadableLoaderRelease(private val version: LoaderVersion) : Downloadab
         return version.createdAt.epochSeconds
     }
 
-    override fun getDownload(): DownloadableAsset? {
+    override fun getDownload(): DownloadableAsset {
         val filename = "geode-${version.tag}-${LaunchUtils.platformName}.zip"
         return DownloadableAsset(
             url = "https://github.com/geode-sdk/geode/releases/download/${version.tag}/$filename",
             filename = filename
         )
     }
+
+    override fun getResourcesDownload(): DownloadableAsset {
+        val filename = "resources.zip"
+        return DownloadableAsset(
+            url = "https://github.com/geode-sdk/geode/releases/download/${version.tag}/resources.zip",
+            filename = filename
+        )
+    }
 }

app/src/main/java/com/geode/launcher/updater/ReleaseManager.kt

@@ -25,7 +25,9 @@ import okio.sink
 import okio.source
 import java.io.File
 import java.io.FileNotFoundException
+import java.io.IOException
 import java.io.InterruptedIOException
+import kotlin.math.max
 import kotlin.time.Clock
 import kotlin.time.Duration.Companion.minutes
 
@@ -168,6 +170,53 @@ class ReleaseManager private constructor(
         return Result.success(outputFile)
     }
 
+    private suspend fun performResourceDownload(resourceAsset: DownloadableAsset, initialSize: Long) {
+        val guessSize = if (resourceAsset.size == null) null else initialSize + resourceAsset.size
+        val guessInitial = if (guessSize == null) 0 else initialSize
+        _uiState.value = ReleaseManagerState.InDownload(guessInitial, guessSize)
+
+        val outputDir = getTempResourcesDirectory()
+        val outputPath = outputDir.path
+
+        val finalDir = LaunchUtils.getGeodeResourcesDirectory(applicationContext)
+
+        try {
+            if (!outputDir.exists()) {
+                outputDir.mkdirs()
+            }
+
+            DownloadUtils.downloadStream(
+                httpClient,
+                resourceAsset.url,
+                onProgress = { progress, outOf ->
+                    _uiState.value = ReleaseManagerState.InDownload(initialSize + progress, outOf + initialSize)
+                },
+                onResponse = { body ->
+                    DownloadUtils.copyZipStreamToDirectory(
+                        body.byteStream(),
+                        outputDir
+                    )
+
+                    if (finalDir.exists()) {
+                        finalDir.deleteRecursively()
+                    }
+
+                    if (!outputDir.renameTo(finalDir)) {
+                        throw IOException("failed to rename resources output directory")
+                    }
+                }
+            )
+        } catch (e: Exception) {
+            sendError(e)
+            return
+        } finally {
+            val tempPathClone = File(outputPath)
+            runCatching {
+                if (tempPathClone.exists()) tempPathClone.deleteRecursively()
+            }
+        }
+    }
+
     private suspend fun performUpdate(release: Downloadable) {
         val releaseAsset = release.getDownload()
         if (releaseAsset == null) {
@@ -177,8 +226,14 @@ class ReleaseManager private constructor(
             return
         }
 
+        val resourcesAsset = release.getResourcesDownload()
+
+        var releaseSize = releaseAsset.size ?: 0L
+        val resourcesSize = resourcesAsset?.size ?: 0L
+
         // set an initial download size
-        _uiState.value = ReleaseManagerState.InDownload(0, releaseAsset.size)
+        val initialSize = if (releaseAsset.size == null && resourcesAsset?.size == null) null else releaseSize + resourcesSize
+        _uiState.value = ReleaseManagerState.InDownload(0, initialSize)
 
         val outputFile = getTempFile()
         // clone the file instance as renameTo may move the original file
@@ -197,7 +252,9 @@ class ReleaseManager private constructor(
                 httpClient,
                 releaseAsset.url,
                 onProgress = { progress, outOf ->
-                    _uiState.value = ReleaseManagerState.InDownload(progress, outOf)
+                    _uiState.value = ReleaseManagerState.InDownload(progress, outOf + resourcesSize)
+
+                    releaseSize = max(outOf, releaseSize)
                 },
                 onResponse = { body ->
                     DownloadUtils.extractFileFromZipStream(
@@ -231,6 +288,10 @@ class ReleaseManager private constructor(
             }
         }
 
+        if (resourcesAsset != null) {
+            performResourceDownload(resourcesAsset, releaseSize)
+        }
+
         // extraction performed
         updatePreferences(release)
 
@@ -251,7 +312,7 @@ class ReleaseManager private constructor(
         val sharedPreferences = PreferenceUtils.get(applicationContext)
 
         val originalFileHash = sharedPreferences.getString(PreferenceUtils.Key.CURRENT_RELEASE_MODIFIED)
-            ?: return false
+            ?: return true
 
         val currentFileHash = computeFileHash(geodeFile)
         return originalFileHash != currentFileHash
@@ -401,6 +462,13 @@ class ReleaseManager private constructor(
         return File(geodeDirectory, geodeName)
     }
 
+    private fun createRandomString(): String {
+        val alphabet = ('A'..'Z') + ('a'..'z') + ('0'..'9')
+        return buildString(8) {
+            repeat(8) { append(alphabet.random()) }
+        }
+    }
+
     private fun getTempFile(): File {
         val geodeName = LaunchUtils.geodeFilename
         val geodeDirectory = LaunchUtils.getBaseDirectory(applicationContext)
@@ -408,11 +476,7 @@ class ReleaseManager private constructor(
         // warning!! while File::createTempFile may look tempting, a certain brand of phones has a messed up implementation of it
         // so we're making a temp file manually (as long as it doesn't collide with the geode download, it's okay)
 
-        val alphabet = ('A'..'Z') + ('a'..'z') + ('0'..'9')
+        val suffix = createRandomString()
-        val suffix = buildString(8) {
-            repeat(8) { append(alphabet.random()) }
-        }
-
         val tmpName = "tmp-$suffix.$geodeName"
 
         val tempFile = File(geodeDirectory, tmpName)
@@ -420,6 +484,19 @@ class ReleaseManager private constructor(
         return tempFile
     }
 
+    private fun getTempResourcesDirectory(): File {
+        val finalDir = LaunchUtils.getGeodeResourcesDirectory(applicationContext)
+        val suffix = createRandomString()
+        val tempDirName = "tmp-$suffix-geode.loader"
+
+        val parentDir = finalDir.parentFile
+        return if (parentDir != null) {
+            File(finalDir.parentFile, tempDirName)
+        } else {
+            File(tempDirName)
+        }
+    }
+
     /**
      * Cancels the current update job.
      */

app/src/main/java/com/geode/launcher/utils/DownloadUtils.kt

@@ -72,6 +72,35 @@ object DownloadUtils {
         }
     }
 
+    suspend fun copyZipStreamToDirectory(inputStream: InputStream, output: File) = runInterruptible {
+        ZipInputStream(inputStream).use { zipStream ->
+            if (output.exists()) output.deleteRecursively()
+            output.mkdirs()
+
+            val canonicalOutput = output.canonicalPath
+
+            var entry = zipStream.nextEntry
+            while (entry != null) {
+                val destination = File(output, entry.name)
+                if (!destination.canonicalPath.startsWith(canonicalOutput)) {
+                    throw IOException("attempted copy to outside of output directory: ${entry.name}")
+                }
+
+                if (destination.isDirectory) {
+                    destination.mkdirs()
+                } else {
+                    destination.parentFile?.mkdirs()
+
+                    destination.outputStream().use { destinationStream ->
+                        zipStream.copyTo(destinationStream)
+                    }
+                }
+
+                entry = zipStream.nextEntry
+            }
+        }
+    }
+
     /**
      * Extracts a file named by zipPath from inputStream and copies it to outputStream
      *

app/src/main/java/com/geode/launcher/utils/LaunchUtils.kt

@@ -85,6 +85,11 @@ object LaunchUtils {
         return File(base, "game/geode/logs/")
     }
 
+    fun getGeodeResourcesDirectory(context: Context): File {
+        val base = getBaseDirectory(context)
+        return File(base, "game/geode/resources/geode.loader/")
+    }
+
     fun getLastCrash(context: Context): File? {
         val crashDirectory = getCrashDirectory(context)
         if (!crashDirectory.exists()) {