7 files changed, 178 insertions, 0 deletions
diff --git a/sharedVariables/src/MappingStyle.kt b/sharedVariables/src/MappingStyle.kt
new file mode 100644
index 000000000..604495ce1
--- /dev/null
+++ b/sharedVariables/src/MappingStyle.kt
@@ -0,0 +1,6 @@
+package at.skyhanni.sharedvariables
+
+enum class MappingStyle(val identifier: String) {
+    SEARGE("srg"),
+    YARN("yarn"),
+}
diff --git a/sharedVariables/src/MinecraftVersion.kt b/sharedVariables/src/MinecraftVersion.kt
new file mode 100644
index 000000000..7384c8fbd
--- /dev/null
+++ b/sharedVariables/src/MinecraftVersion.kt
@@ -0,0 +1,25 @@
+package at.skyhanni.sharedvariables
+
+import org.gradle.jvm.toolchain.JavaLanguageVersion
+
+enum class MinecraftVersion(
+    val versionName: String,
+    val javaVersion: Int,
+) {
+    MC189("1.8.9", 8),
+    MC11200("1.12", 8),
+    MC11202("1.12.2", 8),
+    MC1144("1.14.4", 8),
+    MC11605("1.16.5", 8),
+    MC121("1.21", 21),
+    ;
+
+    val javaLanguageVersion = JavaLanguageVersion.of(javaVersion)
+
+    val versionNumber = run {
+        val parts = versionName.split('.').mapTo(mutableListOf()) { it.toInt() }
+        if (parts.size == 2) parts.add(0)
+        require(parts.size == 3)
+        parts[0] * 10000 + parts[1] * 100 + parts[2]
+    }
+}
diff --git a/sharedVariables/src/MultiVersionStage.kt b/sharedVariables/src/MultiVersionStage.kt
new file mode 100644
index 000000000..78914a91d
--- /dev/null
+++ b/sharedVariables/src/MultiVersionStage.kt
@@ -0,0 +1,43 @@
+package at.skyhanni.sharedvariables
+
+import java.io.File
+import java.util.Properties
+
+enum class MultiVersionStage(val label: String) {
+    OFF("off"),
+    PREPROCESS_ONLY("preprocess-only"),
+    FULL("compile")
+    ;
+
+    fun shouldCompile(projectTarget: ProjectTarget): Boolean {
+        if (projectTarget == ProjectTarget.MAIN) return true
+        return when (this) {
+            OFF -> false
+            PREPROCESS_ONLY -> false
+            FULL -> projectTarget == ProjectTarget.MODERN
+        }
+    }
+
+    fun shouldCreateProject(projectTarget: ProjectTarget): Boolean {
+        if (projectTarget == ProjectTarget.MAIN) return true
+        return when (this) {
+            OFF -> false
+            PREPROCESS_ONLY -> true
+            FULL -> true
+        }
+    }
+
+
+    companion object {
+        lateinit var activeState: MultiVersionStage
+        fun initFrom(file: File) {
+            val prop = Properties()
+            if (file.exists()) {
+                file.inputStream().use(prop::load)
+            }
+            val multiVersion = prop["skyhanni.multi-version"]
+            activeState = MultiVersionStage.values().find { it.label == multiVersion } ?: OFF
+            println("SkyHanni multi version stage loaded: $activeState")
+        }
+    }
+}
diff --git a/sharedVariables/src/NoOp.kt b/sharedVariables/src/NoOp.kt
new file mode 100644
index 000000000..d0103a956
--- /dev/null
+++ b/sharedVariables/src/NoOp.kt
@@ -0,0 +1,11 @@
+package at.skyhanni.sharedvariables
+
+import org.gradle.api.Plugin
+/**
+ * This class is a no op plugin. It can be applied to any project or gradle workspace and serves only as a marker
+ * for gradle to pull in the other classes in the sharedVariables project. We use a subproject rather than buildSrc
+ * since buildSrc is not available during settings configuration time (and also buildSrc tends to be slower).
+ */
+class NoOp : Plugin<Any> {
+    override fun apply(target: Any) {}
+}
diff --git a/sharedVariables/src/ProjectTarget.kt b/sharedVariables/src/ProjectTarget.kt
new file mode 100644
index 000000000..9bf46c781
--- /dev/null
+++ b/sharedVariables/src/ProjectTarget.kt
@@ -0,0 +1,74 @@
+package at.skyhanni.sharedvariables
+
+private fun yarn(version: String): String = "net.fabricmc:yarn:${version}:v2"
+
+enum class ProjectTarget(
+    val projectName: String,
+    val minecraftVersion: MinecraftVersion,
+    val mappingDependency: String,
+    val mappingStyle: MappingStyle,
+    val forgeDep: String?,
+    linkTo: String?,
+) {
+    MAIN(
+        "1.8.9",
+        MinecraftVersion.MC189,
+        "de.oceanlabs.mcp:mcp_stable:22-1.8.9@zip",
+        MappingStyle.SEARGE,
+        "net.minecraftforge:forge:1.8.9-11.15.1.2318-1.8.9",
+        "BRIDGE112",
+    ),
+    BRIDGE112(
+        "1.12.2",
+        MinecraftVersion.MC11202,
+        "de.oceanlabs.mcp:mcp_stable:39-1.12@zip",
+        MappingStyle.SEARGE,
+        "net.minecraftforge:forge:1.12.2-14.23.5.2847",
+        "BRIDGE116FORGE",
+    ),
+    BRIDGE116FORGE(
+        "1.16.5-forge",
+        MinecraftVersion.MC11605,
+        "official",
+        MappingStyle.SEARGE,
+        "net.minecraftforge:forge:1.16.5-36.2.39",
+        "BRIDGE116FABRIC",
+    ),
+    BRIDGE116FABRIC(
+        "1.16.5",
+        MinecraftVersion.MC11605,
+        yarn("1.16.5+build.10"),
+        MappingStyle.YARN,
+        null,
+        "MODERN",
+    ),
+    MODERN(
+        "1.21",
+        MinecraftVersion.MC121,
+        yarn("1.21+build.9"),
+        MappingStyle.YARN,
+        null,
+        null,
+    )
+    ;
+
+    val isBridge get() = name.contains("bridge")
+
+    val linkTo by lazy {
+        if (linkTo == null) null
+        else {
+            ProjectTarget.values().find { it.name == linkTo }!!
+        }
+    }
+    val parent by lazy {
+        values().find { it.linkTo == this }
+    }
+    val isForge get() = forgeDep != null
+    val isFabric get() = forgeDep == null
+
+    val projectPath get() = ":$projectName"
+
+    companion object {
+        fun activeVersions() = values().filter { MultiVersionStage.activeState.shouldCreateProject(it) }
+    }
+}
diff --git a/sharedVariables/src/SHVersionInfo.kt b/sharedVariables/src/SHVersionInfo.kt
new file mode 100644
index 000000000..2f948897e
--- /dev/null
+++ b/sharedVariables/src/SHVersionInfo.kt
@@ -0,0 +1,12 @@
+package at.skyhanni.sharedvariables
+
+object SHVersionInfo {
+    val gitHash by lazy {
+        val proc = ProcessBuilder("git", "rev-parse", "--short", "HEAD")
+            .redirectOutput(ProcessBuilder.Redirect.PIPE)
+            .redirectInput(ProcessBuilder.Redirect.PIPE)
+            .start()
+        proc.waitFor()
+        proc.inputStream.readBytes().decodeToString().trim()
+    }
+}
diff --git a/sharedVariables/src/Util.kt b/sharedVariables/src/Util.kt
new file mode 100644
index 000000000..750a73cbe
--- /dev/null
+++ b/sharedVariables/src/Util.kt
@@ -0,0 +1,7 @@
+package at.skyhanni.sharedvariables
+
+import org.gradle.jvm.toolchain.JavaLanguageVersion
+
+fun JavaLanguageVersion.versionString() =
+    if (asInt() < 9) "1." + asInt()
+    else asInt().toString()