amethyst/quartz/build.gradle.kts

import com.vanniktech.maven.publish.KotlinMultiplatform
import com.vanniktech.maven.publish.SourcesJar
import org.jetbrains.kotlin.gradle.dsl.JvmTarget
import org.jetbrains.kotlin.gradle.targets.native.tasks.KotlinNativeTest


plugins {
    alias(libs.plugins.kotlinMultiplatform)
    alias(libs.plugins.androidKotlinMultiplatformLibrary)
    alias(libs.plugins.serialization)
    alias(libs.plugins.vanniktech.mavenPublish)
}

kotlin {
    compilerOptions {
        freeCompilerArgs.add("-Xexpect-actual-classes")
    }
    jvm {
        compilerOptions {
            jvmTarget.set(JvmTarget.JVM_21)
        }
    }

    android {
        namespace = "com.vitorpamplona.quartz"
        compileSdk =
            libs.versions.android.compileSdk
                .get()
                .toInt()
        minSdk =
            libs.versions.android.minSdk
                .get()
                .toInt()

        compilerOptions {
            jvmTarget.set(JvmTarget.JVM_21)
        }

        optimization {
            consumerKeepRules.apply {
                publish = true
                file("consumer-rules.pro")
            }
        }

        withHostTest {}

        withDeviceTest {
            instrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
        }
    }

    // For iOS targets, this is also where you should
    // configure native binary output. For more information, see:
    // https://kotlinlang.org/docs/multiplatform-build-native-binaries.html#build-xcframeworks

    // A step-by-step guide on how to include this library in an XCode
    // project can be found here:
    // https://developer.android.com/kotlin/multiplatform/migrate
    val xcfName = "quartz-kmpKit"

    iosArm64 {
        binaries.framework {
            baseName = xcfName
            isStatic = true
            binaryOption("bundleId", "com.vitorpamplona.quartz")
        }
    }

    iosSimulatorArm64 {
        binaries.framework {
            baseName = xcfName
            isStatic = true
            binaryOption("bundleId", "com.vitorpamplona.quartz")
        }
    }

    linuxX64()

    macosArm64()

    // This makes sure that the resource file directory is visible for iOS tests.
    val rootDir = "${rootProject.rootDir.path}/quartz/src/commonTest/resources"

    tasks.withType<Test>().configureEach {
        maxHeapSize = "4g"
        environment("TEST_RESOURCES_ROOT", rootDir)
    }

    tasks.withType<KotlinNativeTest>().configureEach {
        environment("TEST_RESOURCES_ROOT", rootDir)
        // This is necessary to have the variable propagated on iOS
        environment("SIMCTL_CHILD_TEST_RESOURCES_ROOT", rootDir)
    }

    // Enable LLVM optimizations for native test binaries (benchmark accuracy).
    // Without opt, K/N test binaries compile in debug mode (~20× slower).
    // Use the binary-level API instead of -opt freeCompilerArg to avoid the
    // "Unsupported combination of flags: -opt and -g" conflict in Kotlin/Native 2.1+.
    targets.withType<org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget>().configureEach {
        binaries.withType<org.jetbrains.kotlin.gradle.plugin.mpp.TestExecutable>().configureEach {
            optimized = true
            debuggable = false
        }
    }

    // Source set declarations.
    // Declaring a target automatically creates a source set with the same name. By default, the
    // Kotlin Gradle Plugin creates additional source sets that depend on each other, since it is
    // common to share sources between related targets.
    // See: https://kotlinlang.org/docs/multiplatform-hierarchy.html
    sourceSets {
        commonMain {
            dependencies {
                implementation(libs.kotlin.stdlib)
                implementation(libs.kotlinx.coroutines.core)

                // For LruCache
                implementation(libs.androidx.collection)

                // @Immutable and @Stable
                implementation(libs.androidx.compose.runtime.annotation)

                // Bitcoin secp256k1 bindings
                api(libs.secp256k1.kmp.common)

                // Kotlin serialization for the times where we need the Json tree and performance is not that important.
                implementation(libs.kotlinx.serialization.json)

                // immutable collections to avoid recomposition
                implementation(libs.kotlinx.collections.immutable)

                // SQLite KMP driver for event store
                api(libs.androidx.sqlite)
                implementation(libs.androidx.sqlite.bundled)

                // Negentropy set reconciliation (NIP-77)
                api(libs.negentropy.kmp)

                implementation("io.github.andreypfau:kotlinx-crypto-hmac:0.0.4")
                implementation("io.github.andreypfau:kotlinx-crypto-sha2:0.0.4")
            }
        }

        commonTest {
            dependencies {
                implementation(libs.kotlin.test)
                implementation(libs.kotlinx.coroutines.test)

                // SQLite bundled driver for tests
                api(libs.androidx.sqlite)
                implementation(libs.androidx.sqlite.bundled)
            }
        }

        // Must be defined before androidMain and jvmMain
        val jvmAndroid =
            create("jvmAndroid") {
                dependsOn(commonMain.get())

                dependencies {
                    // Performant Parser of JSONs into Events
                    api(libs.jackson.module.kotlin)

                    // Websockets API
                    implementation(libs.okhttp)
                    implementation(libs.okhttpCoroutines)

                    // Chess engine for move validation and legal move generation
                    // NOTE: 1.0.4+ uses Java 21's removeLast() which crashes on Android API < 34
                    // TODO: Test if 1.0.0 works, or fork library to fix
                    implementation(libs.kchesslib)
                }
            }

        // Must be defined before androidMain and jvmMain
        val jvmAndroidTest =
            create("jvmAndroidTest") {
                dependsOn(commonTest.get())
                dependencies {
                    implementation(libs.kotlin.test)
                    implementation(libs.kotlinx.coroutines.test)

                    // In-process Nostr relay (geode) so JVM/Android host
                    // tests don't need network access or a Rust toolchain.
                    // testFixtures (RelayClientTest base, fixtures,
                    // collectUntilEose) are wired below at the top-level
                    // `dependencies` block — the KMP source-set DSL
                    // doesn't expose the `testFixtures(...)` consumer.
                    implementation(project(":geode"))
                }
            }

        jvmMain {
            dependsOn(jvmAndroid)
            dependencies {
                // Bitcoin secp256k1 bindings
                implementation(libs.secp256k1.kmp.jni.jvm)
            }
        }

        jvmTest {
            dependsOn(jvmAndroidTest)
            dependencies {
                // Bitcoin secp256k1 bindings
                implementation(libs.secp256k1.kmp.jni.jvm)

                // Custom C secp256k1 (libschnorr256k1) for cross-validation + 3-way benchmark
                implementation(libs.schnorr256k1.kmp)

                // SQLite bundled driver for JVM tests
                implementation(libs.androidx.sqlite.bundled.jvm)
            }
        }

        androidMain {
            dependsOn(jvmAndroid)
            dependencies {
                implementation(libs.androidx.core.ktx)

                // Bitcoin secp256k1 bindings to Android
                api(libs.secp256k1.kmp.jni.android)
            }
        }

        getByName("androidHostTest") {
            dependencies {
                implementation(libs.kotlin.test)
                implementation(libs.kotlinx.coroutines.test)

                // Bitcoin secp256k1 bindings
                implementation(libs.secp256k1.kmp.jni.jvm)

                // SQLite bundled driver for Host tests
                implementation(libs.androidx.sqlite.bundled.jvm)
            }
        }

        getByName("androidDeviceTest") {
            dependencies {
                implementation(libs.androidx.runner)
                implementation(libs.androidx.core)
                implementation(libs.androidx.junit)
                implementation(libs.androidx.espresso.core)

                implementation(libs.kotlin.test)
                implementation(libs.kotlinx.coroutines.test)

                // Bitcoin secp256k1 bindings to Android
                api(libs.secp256k1.kmp.jni.android)

                // Custom C secp256k1 (libschnorr256k1) for cross-validation + 3-way benchmark
                implementation(libs.schnorr256k1.kmp)
            }
        }

        // Must be defined before appleMain, linuxMain, etc.
        val nativeMain =
            create("nativeMain") {
                dependsOn(commonMain.get())
            }

        val nativeTest =
            create("nativeTest") {
                dependsOn(commonTest.get())
            }

        // Must be defined before iosMain and macosMain
        val appleMain =
            create("appleMain") {
                dependsOn(nativeMain)
                dependencies {
                    implementation(libs.charlietap.cachemap)
                    implementation(libs.net.thauvin.erik.urlencoder.lib)
                    implementation(libs.dev.whyoleg.cryptography.provider.apple.optimal)
                    implementation("io.github.andreypfau:kotlinx-crypto-hmac:0.0.4")
                    implementation("io.github.andreypfau:kotlinx-crypto-sha2:0.0.4")
                }
            }

        val appleTest =
            create("appleTest") {
                dependsOn(nativeTest)
            }

        iosMain {
            dependsOn(appleMain)
        }

        val iosArm64Main by getting {
            dependsOn(iosMain.get())
        }

        val iosSimulatorArm64Main by getting {
            dependsOn(iosMain.get())
        }

        iosTest {
            dependsOn(appleTest)
        }

        val iosArm64Test by getting {
            dependsOn(iosTest.get())
        }

        val iosSimulatorArm64Test by getting {
            dependsOn(iosTest.get())
        }

        val macosMain =
            create("macosMain") {
                dependsOn(appleMain)
            }

        val macosTest =
            create("macosTest") {
                dependsOn(appleTest)
            }

        val macosArm64Main by getting {
            dependsOn(macosMain)
        }

        val macosArm64Test by getting {
            dependsOn(macosTest)
        }

        val linuxMain =
            create("linuxMain") {
                dependsOn(nativeMain)
                dependencies {
                    implementation(libs.net.thauvin.erik.urlencoder.lib)
                    implementation(libs.dev.whyoleg.cryptography.provider.apple.optimal)
                }
            }

        val linuxTest =
            create("linuxTest") {
                dependsOn(nativeTest)
            }

        val linuxX64Main by getting {
            dependsOn(linuxMain)
        }

        val linuxX64Test by getting {
            dependsOn(linuxTest)
        }
    }
}

// testFixtures(...) consumer lives outside the KMP source-set DSL —
// the KMP source-set `dependencies { }` block uses
// `KotlinDependencyHandler`, which does not expose the
// `testFixtures(...)` projection. The standard Gradle dependency
// configuration name (`jvmAndroidTestImplementation`) does work here.
dependencies {
    "jvmAndroidTestImplementation"(testFixtures(project(":geode")))
}

// iOS purity gate. Jackson and OkHttp are JVM-only and must never appear
// in source sets that compile for iOS / native / common targets. The KMP
// build would eventually fail with an "unresolved reference" if these
// leaked in, but that requires a macOS runner. This task is a fast Linux
// linter that fails with a clear message before iOS CI ever spins up.
//
// Scope: source sets whose code is compiled for at least one non-JVM
// target. Excludes jvmAndroid, jvmMain, androidMain (and their tests),
// where Jackson and OkHttp are legitimately used.
val verifyKmpPurity by tasks.registering {
    group = "verification"
    description = "Fails if iOS-targeted source sets import JVM-only deps."
    val checkedDirs =
        listOf(
            "src/commonMain", "src/commonTest",
            "src/appleMain", "src/appleTest",
            "src/nativeMain", "src/nativeTest",
            "src/iosMain", "src/iosTest",
            "src/iosArm64Main", "src/iosArm64Test",
            "src/iosSimulatorArm64Main", "src/iosSimulatorArm64Test",
            "src/linuxMain", "src/linuxTest",
            "src/linuxX64Main", "src/linuxX64Test",
            "src/macosMain", "src/macosTest",
            "src/macosArm64Main", "src/macosArm64Test",
        ).map { layout.projectDirectory.dir(it).asFile }
            .filter { it.exists() }
    inputs.files(checkedDirs)
    doLast {
        // Each pattern is paired with a short hint so the failure message
        // points at the canonical KMP replacement.
        val forbidden =
            listOf(
                "com.fasterxml.jackson" to "Jackson is JVM-only — use kotlinx.serialization",
                "okhttp3" to "OkHttp is JVM-only — wrap behind expect/actual or use Ktor on iOS",
                "System.currentTimeMillis" to "use TimeUtils.now()",
                "Thread.sleep" to "use kotlinx.coroutines.delay or platform-specific actual",
                "java.util.UUID" to "use kotlin.uuid.Uuid",
                "kotlin.jvm.Synchronized" to "use a KMP lock primitive",
                "kotlin.jvm.Volatile" to "use kotlin.concurrent.Volatile",
            )
        val offenders =
            checkedDirs.flatMap { dir ->
                dir.walkTopDown()
                    .filter { it.isFile && it.extension == "kt" }
                    .flatMap { file ->
                        file.readLines().withIndex().mapNotNull { (idx, line) ->
                            val trimmed = line.trimStart()
                            if (trimmed.startsWith("//") || trimmed.startsWith("*") || trimmed.startsWith("/*")) {
                                return@mapNotNull null
                            }
                            forbidden.firstOrNull { (pattern, _) -> line.contains(pattern) }?.let { (hit, hint) ->
                                "${file.relativeTo(rootDir)}:${idx + 1}: '$hit' — $hint"
                            }
                        }
                    }
            }
        if (offenders.isNotEmpty()) {
            throw GradleException(
                "iOS-targeted source sets must not reference JVM-only APIs. " +
                    "Move the offending code to jvmAndroid/ or behind an expect/actual:\n  " +
                    offenders.joinToString("\n  "),
            )
        }
    }
}

tasks.named("check").configure { dependsOn(verifyKmpPurity) }

mavenPublishing {
    // sources publishing is always enabled by the Kotlin Multiplatform plugin
    configure(
        KotlinMultiplatform(
            // whether to publish a sources jar
            sourcesJar = SourcesJar.Sources(),
        ),
    )

    coordinates(
        groupId = "com.vitorpamplona.quartz",
        artifactId = "quartz",
        version = "1.11.0",
    )

    // Configure publishing to Maven Central
    publishToMavenCentral(automaticRelease = true)

    // Enable GPG signing for all publications
    signAllPublications()

    pom {
        name = "Quartz: Nostr Library for Kotlin Multiplatform"
        description = "Nostr library ported to Kotlin/Multiplatform for JVM, Android, iOS & Linux"
        inceptionYear = "2025"
        url = "https://github.com/vitorpamplona/amethyst/"
        licenses {
            license {
                name = "MIT License"
                url = "https://github.com/vitorpamplona/amethyst/blob/main/LICENSE"
            }
        }
        developers {
            developer {
                id = "vitorpamplona"
                name = "Vitor Pamplona"
                url = "http://vitorpamplona.com"
                email = "vitor@vitorpamplona.com"
            }
        }
        scm {
            url = "https://github.com/vitorpamplona/amethyst/"
            connection = "https://github.com/vitorpamplona/amethyst/.git"
        }
    }
}