Rewritten flashing internal modules to model

This is done in an effort to separate flash activity to smaller pieces.

app/src/main/java/com/topjohnwu/magisk/model/flash/Flashing.kt

@@ -0,0 +1,62 @@
+package com.topjohnwu.magisk.model.flash
+
+import android.content.Context
+import android.net.Uri
+import androidx.core.os.postDelayed
+import com.topjohnwu.magisk.tasks.FlashZip
+import com.topjohnwu.magisk.utils.Utils
+import com.topjohnwu.magisk.utils.inject
+import com.topjohnwu.superuser.Shell
+import com.topjohnwu.superuser.internal.UiThreadHandler
+
+sealed class Flashing(
+    uri: Uri,
+    private val console: MutableList<String>,
+    log: MutableList<String>,
+    private val resultListener: (Result<Boolean>) -> Unit
+) : FlashZip(uri, console, log) {
+
+    override fun onResult(success: Boolean) {
+        if (!success) {
+            console.add("! Installation failed")
+        }
+
+        resultListener(Result.success(success))
+    }
+
+    class Install(
+        uri: Uri,
+        console: MutableList<String>,
+        log: MutableList<String>,
+        resultListener: (Result<Boolean>) -> Unit = {}
+    ) : Flashing(uri, console, log, resultListener) {
+
+        override fun onResult(success: Boolean) {
+            if (success) {
+                Utils.loadModules()
+            }
+            super.onResult(success)
+        }
+
+    }
+
+    class Uninstall(
+        uri: Uri,
+        console: MutableList<String>,
+        log: MutableList<String>,
+        resultListener: (Result<Boolean>) -> Unit = {}
+    ) : Flashing(uri, console, log, resultListener) {
+
+        private val context: Context by inject()
+
+        override fun onResult(success: Boolean) {
+            if (success) {
+                UiThreadHandler.handler.postDelayed(3000) {
+                    Shell.su("pm uninstall " + context.packageName).exec()
+                }
+            }
+            super.onResult(success)
+        }
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/model/flash/Patching.kt

@@ -0,0 +1,51 @@
+package com.topjohnwu.magisk.model.flash
+
+import android.net.Uri
+import com.topjohnwu.magisk.tasks.MagiskInstaller
+import com.topjohnwu.superuser.Shell
+
+sealed class Patching(
+    private val console: MutableList<String>,
+    logs: List<String>,
+    private val resultListener: (Result<Boolean>) -> Unit
+) : MagiskInstaller(console, logs) {
+
+    override fun onResult(success: Boolean) {
+        if (success) {
+            console.add("- All done!")
+        } else {
+            Shell.sh("rm -rf $installDir").submit()
+            console.add("! Installation failed")
+        }
+        resultListener(Result.success(success))
+    }
+
+    class File(
+        private val uri: Uri,
+        console: MutableList<String>,
+        logs: List<String>,
+        resultListener: (Result<Boolean>) -> Unit = {}
+    ) : Patching(console, logs, resultListener) {
+        override fun operations() =
+            extractZip() && handleFile(uri) && patchBoot() && storeBoot()
+    }
+
+    class SecondSlot(
+        console: MutableList<String>,
+        logs: List<String>,
+        resultListener: (Result<Boolean>) -> Unit = {}
+    ) : Patching(console, logs, resultListener) {
+        override fun operations() =
+            findSecondaryImage() && extractZip() && patchBoot() && flashBoot() && postOTA()
+    }
+
+    class Direct(
+        console: MutableList<String>,
+        logs: List<String>,
+        resultListener: (Result<Boolean>) -> Unit = {}
+    ) : Patching(console, logs, resultListener) {
+        override fun operations() =
+            findImage() && extractZip() && patchBoot() && flashBoot()
+    }
+
+}