From 29a6985a66bb3c5a3a44718f0181d13a1e0129b6 Mon Sep 17 00:00:00 2001
From: Kilobyte22 <stiepen22@gmx.de>
Date: Mon, 26 Oct 2020 00:14:16 +0100
Subject: [PATCH] Add init_only flag

---
 build.sbt                                              |  4 ++--
 .../at/chaosfield/packupdate/common/ComponentFlag.java | 10 ++++++++--
 .../scala/at/chaosfield/packupdate/common/Update.scala |  6 ++++--
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/build.sbt b/build.sbt
index 7e758e6..b4d38f4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 name := "PackUpdate"
 
-version := "3.0"
+version := "3.1-rc1"
 
 scalaVersion := "2.12.8"
 
@@ -11,4 +11,4 @@ libraryDependencies += "net.sourceforge.argparse4j" % "argparse4j" % "0.8.1"
 libraryDependencies += "org.json4s" % "json4s-jackson_2.12" % "3.6.7"
 libraryDependencies += "org.scala-lang.modules" %% "scala-xml" % "1.2.0"
 
-Compile / mainClass := Some("at.chaosfield.packupdate.Main")
\ No newline at end of file
+Compile / mainClass := Some("at.chaosfield.packupdate.Main")
diff --git a/src/main/java/at/chaosfield/packupdate/common/ComponentFlag.java b/src/main/java/at/chaosfield/packupdate/common/ComponentFlag.java
index 485c4f1..115e08c 100644
--- a/src/main/java/at/chaosfield/packupdate/common/ComponentFlag.java
+++ b/src/main/java/at/chaosfield/packupdate/common/ComponentFlag.java
@@ -29,8 +29,9 @@ public enum ComponentFlag {
      *
      * It is undefined behaviour to set both this option and no_integrity (current implementation will ignore this option
      * in that case)
+     *
+     * Will be ignored if init_only is set.
      */
-    // TODO: handle properly when upgrading from legacy
     ForceOverwrite("force_overwrite"),
 
     /**
@@ -56,7 +57,12 @@ public enum ComponentFlag {
      * It is undefined behaviour to set both this option and force_overwrite (current implementation will ignore this option
      * in that case)
      */
-    NoIntegrity("no_integrity")
+    NoIntegrity("no_integrity"),
+
+    /**
+     * Only initializes the files. It will neither overwrite any existing files nor delete any files after removing the component.
+     */
+    InitOnly("init_only")
 
     ;
 
diff --git a/src/main/scala/at/chaosfield/packupdate/common/Update.scala b/src/main/scala/at/chaosfield/packupdate/common/Update.scala
index 69d2004..e0366ee 100644
--- a/src/main/scala/at/chaosfield/packupdate/common/Update.scala
+++ b/src/main/scala/at/chaosfield/packupdate/common/Update.scala
@@ -67,7 +67,7 @@ object Update {
           runDownload(component, file, ui)
           ui.subStatusUpdate(Some("Extracting..."))
           configDir.mkdirs()
-          val files = FileManager.extractZip(file, configDir, component.hasFlag(ComponentFlag.ForceOverwrite), ui)
+          val files = FileManager.extractZip(file, configDir, !component.hasFlag(ComponentFlag.InitOnly) && component.hasFlag(ComponentFlag.ForceOverwrite), ui)
           file.deleteOnExit()
           ui.subStatusUpdate(None)
           files.map(f => InstalledFile(Util.absoluteToRelativePath(f._1, config.minecraftDir), f._2)).toArray
@@ -255,7 +255,9 @@ object Update {
       } else {
         newComponent.flags.contains(ComponentFlag.Disabled)
       }
-      RemovedComponent(oldComponent).execute(config, ui)
+      if (!newComponent.flags.contains(ComponentFlag.InitOnly)) {
+        RemovedComponent(oldComponent).execute(config, ui)
+      }
       NewComponent(newComponent).executeInternal(config, disabled, ui)
     }
   }