import groovy.lang.Closure
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import java.util.Date
import java.text.SimpleDateFormat
import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
import kotlin.text.Regex

val mod_version: String by project
val mc_version: String by project
val forge_version: String by project
val mod_id: String by project
val handle_deps: String by project
val use_commit_hash_in_version: String by project
val handleDeps = handle_deps == "true"

plugins {
	java
	kotlin
	`maven-publish`
	id("net.minecraftforge.gradle")
}

configurations {
	create("library") // non-mod libraries
	create("klibrary") // kotlin libs
	get("implementation").extendsFrom(get("library"), get("klibrary"))
}

data class GitInfo(val version: String, val count: String, val tag: String) {
	// val tagIsVersion: Boolean get() = tag != "" && tag.matches(Regex("v[0-9]+\\.[0-9]\\.[0-9]"))

	val mainVersion: String get() = if (tag != "") tag else mod_version

	val jarName: String get() {
		if (count != "") {
			return "$mainVersion-SNAPSHOT-${version}_$count"
		}

		if (version != "") {
			return "$mainVersion-SNAPSHOT-$version"
		} else {
			return "$mainVersion-SNAPSHOT"
		}
	}

	val modVersion: String get() {
		if (tag != "")
			return mod_version

		if (version != "") {
			return "$mainVersion-SNAPSHOT-$version"
		} else {
			return "$mainVersion-SNAPSHOT"
		}
	}
}

val gitVersion = getCommitVersion() ?: GitInfo("", "", "")

version = gitVersion.modVersion
group = "ru.dbotthepony"

fun getCommitVersion(): GitInfo? {
	try {
		val versionStream = FastByteArrayOutputStream()
		val tagStream = FastByteArrayOutputStream()
		val countStream = FastByteArrayOutputStream()

		val gotVersion = exec {
			commandLine("git", "rev-parse", "--short", "HEAD")
			workingDir(".")
			standardOutput = versionStream
		}.exitValue == 0

		val gotCount = exec {
			commandLine("git", "rev-list", "--count", "HEAD")
			workingDir(".")
			standardOutput = countStream
		}.exitValue == 0

		val gotTag = exec {
			commandLine("git", "tag", "--points-at", "HEAD")
			workingDir(".")
			standardOutput = tagStream
		}.exitValue == 0

		if (!gotVersion || !gotCount || !gotTag) {
			return null
		}

		val version = versionStream.array.copyOfRange(0, versionStream.length).toString(Charsets.UTF_8).trim()
		val tag = tagStream.array.copyOfRange(0, tagStream.length).toString(Charsets.UTF_8).trim()
		val count = countStream.array.copyOfRange(0, countStream.length).toString(Charsets.UTF_8).trim()

		return GitInfo(version, count, tag)
	} catch(err: Throwable) {
		println("Error getting git version")
		println(err)
	}

	return null
}

java.toolchain.languageVersion.set(JavaLanguageVersion.of(17))
println("Targeting Java ${java.toolchain.languageVersion.get()}")

tasks.withType(KotlinCompile::class.java) {
	kotlinOptions {
		freeCompilerArgs = listOf("-Xjvm-default=all")
		jvmTarget = java.toolchain.languageVersion.get().toString()
	}
}

tasks.withType(JavaCompile::class.java) {
	options.compilerArgs.add("-Xlint:all")
}

sourceSets {
	create("data") {
		compileClasspath += sourceSets["main"].output
		runtimeClasspath += sourceSets["main"].output
	}

	this["main"].resources {
		srcDir("src/data/resources")
	}
}

tasks.test {
	useJUnitPlatform()
}

dependencies {
	val jupiter_version: String by project
	val kotlin_version: String by project
	val kotlin_for_forge_version: String by project
	val kotlin_coroutines_version: String by project
	val kotlin_serialization_version: String by project

	minecraft("net.minecraftforge:forge:$mc_version-$forge_version")
	testImplementation("org.junit.jupiter:junit-jupiter:${jupiter_version}")

	implementation("thedarkcolour:kotlinforforge:$kotlin_for_forge_version")

	fun library(notation: Any) { this.add("library", notation) }
	fun klibrary(notation: Any) { this.add("klibrary", notation) }

	val excludeKGroup = closureOf<Any> {
		(this as ExternalModuleDependency).exclude(group = "org.jetbrains", module = "annotations")
	} as Closure<Any>

	// Add everything to the classpath correctly
	klibrary(create("org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version", excludeKGroup))
	klibrary(create("org.jetbrains.kotlin:kotlin-reflect:$kotlin_version", excludeKGroup))
	klibrary(create("org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version", excludeKGroup))
	klibrary(create("org.jetbrains.kotlinx:kotlinx-coroutines-jdk8:$kotlin_coroutines_version", excludeKGroup))
	klibrary(create("org.jetbrains.kotlinx:kotlinx-serialization-json:$kotlin_serialization_version", excludeKGroup))

	// Real mod deobf dependency examples - these get remapped to your current mappings
	// compileOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}:api") // Adds JEI API as a compile dependency
	// runtimeOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}") // Adds the full JEI mod as a runtime dependency
	// implementation fg.deobf("com.tterrag.registrate:Registrate:MC${mc_version}-${registrate_version}") // Adds registrate as a dependency

	// Examples using mod jars from ./libs
	// implementation fg.deobf("blank:EnderRift-1.18.1:2.4.1")

	// compile against the JEI API but do not include it at runtime
	//compileOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}:api")
	// at runtime, use the full JEI jar
	//runtimeOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}")

	if (handleDeps) {
		val jei_version: String by project
		val the_one_probe_version: String by project
		val mekanism_version: String by project

		compileOnly(fg.deobf("mezz.jei:jei-${mc_version}-common-api:${jei_version}"))
		compileOnly(fg.deobf("mezz.jei:jei-${mc_version}-forge-api:${jei_version}"))
		runtimeOnly(fg.deobf("mezz.jei:jei-${mc_version}-forge:${jei_version}"))
		implementation("mcjty:theoneprobe:${mc_version}-${the_one_probe_version}:deobf")

		implementation(fg.deobf("mekanism:Mekanism:${mc_version}-${mekanism_version}:all"))
	}
}

configurations {
	getByName("dataImplementation").extendsFrom(getByName("implementation"))
	getByName("library").resolutionStrategy.cacheChangingModulesFor(10, "minutes")
}

minecraft {
	mappings("official", mc_version)
	accessTransformer(file("src/main/resources/META-INF/accesstransformer.cfg"))

	runs {
		create("client") {
			mods {
				create(mod_id) {
					source(sourceSets["main"])
				}
			}
		}

		create("server") {
			mods {
				create(mod_id) {
					source(sourceSets["main"])
				}
			}
		}

		create("data") {
			args("--mod", "overdrive_that_matters", "--all", "--output", file("src/data/resources/"), "--existing", file("src/main/resources/"))

			mods {
				create(mod_id) {
					sources(sourceSets["main"], sourceSets["data"])
				}
			}
		}
	}
}

minecraft.runs.all {
	workingDirectory = project.file("run").absolutePath

	// "SCAN": For mods scan.
	// "REGISTRIES": For firing of registry events.
	// "REGISTRYDUMP": For getting the contents of all registries.
	property("forge.logging.markers", "REGISTRIES")

	// Log4j console level
	property("forge.logging.console.level", "debug")

	lazyToken("minecraft_classpath") {
		configurations["library"]
			.copyRecursive()
			.resolve()
			.map { it.absolutePath }
			.toMutableList()
			.also { it.addAll(configurations["klibrary"].copyRecursive().resolve().map { it.absolutePath }) }
			.joinToString(File.pathSeparator)
	}
}

repositories {
	maven {
		url = uri("https://maven.dbotthepony.ru")
	}

	mavenCentral()

	maven {
		name = "Progwml6 maven"
		url = uri("https://dvs1.progwml6.com/files/maven/")
	}

	maven {
		name = "ModMaven"
		url = uri("https://modmaven.dev")
	}

	maven {
		name = "tterrag maven"
		url = uri("https://maven.tterrag.com/")
	}

	maven {
		url = uri("https://maven.k-4u.nl")
	}

	maven {
		name = "Kotlin for Forge"
		url = uri("https://thedarkcolour.github.io/KotlinForForge/")
	}

	// If you have mod jar dependencies in ./libs, you can declare them as a repository like so:
	flatDir {
		dir("libs")
	}
}

fun org.gradle.jvm.tasks.Jar.attachManifest() {
	manifest {
		attributes(mapOf(
			"Specification-Title"      to project.name,
			"Specification-Vendor"     to "DBotThePony",
			"Specification-Version"    to "1", // We are version 1 of ourselves
			"Implementation-Title"     to project.name,
			"Implementation-Version"   to gitVersion.modVersion,
			"Implementation-Vendor"    to "DBotThePony",
			"Implementation-Timestamp" to SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").format(Date())
		))
	}
}

// Example configuration to allow publishing using the maven-publish plugin
// This is the preferred method to reobfuscate your jar file
tasks.jar.configure {
	from(configurations["library"].map { if (it.isDirectory) it else zipTree(it) })
	finalizedBy("reobfJar")
	attachManifest()
	archiveVersion.set(gitVersion.jarName)
}

tasks {
	create("sourceJar", org.gradle.jvm.tasks.Jar::class.java) {
		archiveClassifier.set("sources")
		from(sourceSets.main.get().allSource)
	}

	create("deobfJar", org.gradle.jvm.tasks.Jar::class.java) {
		archiveClassifier.set("deobf")
		from(configurations["library"].map { if (it.isDirectory) it else zipTree(it) })
		from(sourceSets.main.get().output)
		attachManifest()
	}
}

val mavenUser: String? by project
val mavenPassword: String? by project

if (mavenUser != null && mavenPassword != null) {
	publishing {
		publications {
			create<MavenPublication>("mavenJava") {
				// from(components["java"])
				artifact(tasks["jar"])
				artifact(tasks["sourceJar"])
				artifact(tasks["deobfJar"])

				pom {
					scm {
						url.set("https://gitlab.com/DBotThePony/overdrive-that-matters.git")
					}

					issueManagement {
						system.set("gitlab")
						url.set("https://gitlab.com/DBotThePony/overdrive-that-matters/issues")
					}
				}
			}
		}

		repositories {
			maven {
				url = uri("sftp://maven@dbotthepony.ru:22/maven")

				credentials {
					username = mavenUser
					password = mavenPassword
				}
			}
		}
	}
}

// However if you are in a multi-project build, dev time needs unobfed jar files, so you can delay the obfuscation until publishing by doing
// publish.dependsOn("reobfJar")

/*
publishing {
	publications {
		mavenJava(MavenPublication) {
			artifact jar
		}
	}
	repositories {
		maven {
			url "file://${project.projectDir}/mcmodsrepo"
		}
	}
}
*/