feat: custom injector selection

app/src/main/kotlin/com/aliucord/manager/manager/PathManager.kt

@@ -59,9 +59,14 @@ class PathManager(context: Context) {
     /**
      * Resolve a specific path for a cached injector.
      */
-    fun cachedInjectorDex(aliucordHash: SemVer) = externalCacheDir
+    fun cachedInjectorDex(version: SemVer, custom: Boolean = false) = externalCacheDir
         .resolve("injector").apply { mkdirs() }
-        .resolve("$aliucordHash.dex")
+        .resolve("$version${if (custom) ".custom" else ""}.dex")
+
+    /**
+     * Get all the versions of custom injector builds.
+     */
+    fun customInjectorDexs() = listCustomFiles(externalCacheDir.resolve("injector"))
 
     /**
      * Resolve a specific path for a versioned cached Aliuhook build

app/src/main/kotlin/com/aliucord/manager/patcher/steps/download/DownloadInjectorStep.kt

@@ -1,14 +1,17 @@
 package com.aliucord.manager.patcher.steps.download
 
+import android.util.Log
 import androidx.compose.runtime.Stable
+import com.aliucord.manager.BuildConfig
 import com.aliucord.manager.R
+import com.aliucord.manager.manager.OverlayManager
 import com.aliucord.manager.manager.PathManager
 import com.aliucord.manager.network.utils.SemVer
 import com.aliucord.manager.patcher.StepRunner
-import com.aliucord.manager.patcher.steps.base.DownloadStep
-import com.aliucord.manager.patcher.steps.base.IDexProvider
+import com.aliucord.manager.patcher.steps.base.*
 import com.aliucord.manager.patcher.steps.patch.ReorganizeDexStep
 import com.aliucord.manager.patcher.steps.prepare.FetchInfoStep
+import com.aliucord.manager.ui.components.dialogs.CustomComponentVersionPicker
 import org.koin.core.component.KoinComponent
 import org.koin.core.component.inject
 
@@ -19,10 +22,12 @@ import org.koin.core.component.inject
 @Stable
 class DownloadInjectorStep : DownloadStep(), IDexProvider, KoinComponent {
     private val paths: PathManager by inject()
+    private val overlays: OverlayManager by inject()
 
     /**
      * This is populated right before the download starts (ref: [execute])
      */
+    private var isCustomVersion: Boolean = false
     lateinit var targetVersion: SemVer
         private set
 
@@ -32,6 +37,39 @@ class DownloadInjectorStep : DownloadStep(), IDexProvider, KoinComponent {
         get() = paths.cachedInjectorDex(targetVersion)
 
     override suspend fun execute(container: StepRunner) {
+        var customVersions = mutableListOf<SemVer>()
+            .apply { addAll(paths.customInjectorDexs()) }
+
+        // Prompt to select or manage custom versions instead of downloading
+        if (customVersions.isNotEmpty()) {
+            val selectedVersion = overlays.startComposableForResult { callback ->
+                CustomComponentVersionPicker(
+                    componentTitle = "Injector",
+                    versions = customVersions,
+                    onConfirm = { version -> callback(version) },
+                    onDelete = { version ->
+                        try {
+                            paths.cachedInjectorDex(version, custom = true).delete()
+                            customVersions.remove(version)
+
+                            // Dismiss if no custom versions left
+                            if (customVersions.isEmpty())
+                                callback(null)
+                        } catch (t: Throwable) {
+                            Log.e(BuildConfig.TAG, "Failed to delete custom component", t)
+                        }
+                    },
+                    onCancel = { callback(null) },
+                )
+            }
+            if (selectedVersion != null) {
+                isCustomVersion = true
+                targetVersion = selectedVersion
+                state = StepState.Skipped
+                return
+            }
+        }
+
         targetVersion = container.getStep<FetchInfoStep>()
             .data.injectorVersion