// ─────────────────────────────────────────────────────────────────────────────
// :macrobenchmark (A35) — the macrobenchmark harness module.
//
// `com.android.test`, NOT `com.android.library`: macrobenchmark must drive the app
// OUT of process (its own APK, its own process, UiAutomator across the boundary) so
// that measured startup/frame timings are the real ones and not perturbed by the
// test framework sharing the app's process.
//
// It instruments :app's `benchmark` variant — non-debuggable, R8'd and
// resource-shrunk like release, but signed with the debug key so no release keystore
// is needed (see app/build.gradle.kts → buildTypes.benchmark).
//
// This module currently has NO sources: the benchmark itself (pair → attach → type →
// approve, plus a cold-start timing) is the next task's deliverable and belongs in
// src/main/kotlin/. The module exists so that work is a matter of adding a file.
//
// Run (device/emulator required — `./gradlew :app:assembleDebug` style CI cannot):
//   ./gradlew :macrobenchmark:connectedBenchmarkAndroidTest
//
// AGP 9 has built-in Kotlin → apply ONLY the android plugin (no kotlin.android).
// The plugin id is applied BARE (no catalog alias / no version): the root build script
// already puts AGP on the classpath via the android.library + android.application
// aliases, and Gradle rejects a third versioned request for the same plugin artifact
// ("already on the classpath with an unknown version"). The version is still pinned in
// one place — `agp` in gradle/libs.versions.toml. Same pattern as :terminal-view.
// ─────────────────────────────────────────────────────────────────────────────

plugins {
    id("com.android.test")
}

android {
    namespace = "wang.yaojia.webterm.macrobenchmark"
    compileSdk = 36

    defaultConfig {
        // Macrobenchmark itself needs API 23+; matching :app's 29 keeps the variant
        // matrix honest (a benchmark on an SDK :app cannot run on is meaningless).
        minSdk = 29
        targetSdk = 35
        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }

    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }

    buildTypes {
        // The only variant this module is built in. `isDebuggable = true` applies to the
        // TEST apk (never to :app) — required so the harness can be instrumented at all.
        create("benchmark") {
            isDebuggable = true
            signingConfig = getByName("debug").signingConfig
            // :app publishes debug/release/benchmark; libraries publish debug/release.
            matchingFallbacks += listOf("release")
        }
    }

    targetProjectPath = ":app"

    // The harness runs in its OWN process and reaches the app only through UiAutomator /
    // shell, never by linking against its classes. Without this, AGP's
    // `checkTestedAppObfuscationBenchmark` refuses to build a non-minified test module
    // against a minified app — a check that is correct for Espresso-style tests (which do
    // link app symbols) and a false positive for macrobenchmark.
    experimentalProperties["android.experimental.self-instrumenting"] = true
}

kotlin {
    jvmToolchain(17)
}

// Only the `benchmark` variant is meaningful; disable the stock debug/release ones so
// `./gradlew build` does not try to assemble a harness against a variant of :app that
// does not exist.
androidComponents {
    beforeVariants { variant ->
        variant.enable = variant.buildType == "benchmark"
    }
}

dependencies {
    // A `com.android.test` module's `main` source set IS its test code — deps go in
    // implementation, not androidTestImplementation.
    implementation(libs.androidx.test.ext.junit)
    implementation(libs.androidx.test.uiautomator)
    implementation(libs.androidx.benchmark.macro.junit4)
}