Build using Toothpick scripts (#122)

Co-authored-by: BillyGalbreath <blake.galbreath@gmail.com>

buildSrc/src/main/kotlin/InitTasks.kt

@@ -0,0 +1,68 @@
+import org.gradle.api.Project
+import task.createApplyPatchesTask
+import task.createImportMCDevTask
+import task.createInitGitSubmodulesTask
+import task.createPaperclipTask
+import task.createRebuildPatchesTask
+import task.createSetupUpstreamTask
+import task.createUpdateUpstreamTask
+import task.createUpstreamCommitTask
+
+@Suppress("UNUSED_VARIABLE")
+internal fun Project.initToothpickTasks() {
+    if (project.hasProperty("fast")) {
+        gradle.taskGraph.whenReady {
+            gradle.taskGraph.allTasks.filter {
+                it.name == "test" || it.name.contains("javadoc", ignoreCase = true)
+            }.forEach {
+                it.onlyIf { false }
+            }
+        }
+    }
+
+    tasks.getByName("build") {
+        doFirst {
+            val readyToBuild =
+                upstreamDir.resolve(".git").exists()
+                        && toothpick.subprojects.values.all { it.projectDir.exists() && it.baseDir.exists() }
+            if (!readyToBuild) {
+                error("Workspace has not been setup. Try running `./gradlew applyPatches` first")
+            }
+        }
+    }
+
+    val initGitSubmodules = createInitGitSubmodulesTask()
+
+    val setupUpstream = createSetupUpstreamTask {
+        dependsOn(initGitSubmodules)
+    }
+
+    val importMCDev = createImportMCDevTask {
+        mustRunAfter(setupUpstream)
+    }
+
+    val paperclip = createPaperclipTask {
+        dependsOn(tasks.getByName("build"))
+        dependsOn(subprojects.map { it.tasks.getByName("build") })
+    }
+
+    val applyPatches = createApplyPatchesTask {
+        // If Paper has not been setup yet or if we modified the submodule (i.e. upstream update), patch
+        if (!lastUpstream.exists()
+            || !upstreamDir.resolve(".git").exists()
+            || lastUpstream.readText() != gitHash(upstreamDir)
+        ) {
+            dependsOn(setupUpstream)
+        }
+        mustRunAfter(setupUpstream)
+        dependsOn(importMCDev)
+    }
+
+    val rebuildPatches = createRebuildPatchesTask()
+
+    val updateUpstream = createUpdateUpstreamTask {
+        finalizedBy(setupUpstream)
+    }
+
+    val upstreamCommit = createUpstreamCommitTask()
+}