// TARGET_BACKEND: JVM
// WITH_REFLECT

import kotlin.reflect.*
import kotlin.test.*

object Delegate {
    lateinit var property: KProperty<*>

    operator fun getValue(instance: Any?, kProperty: KProperty<*>): List<String?> {
        property = kProperty
        return emptyList()
    }

    operator fun setValue(instance: Any?, kProperty: KProperty<*>, value: List<String?>) {
        throw AssertionError()
    }
}

fun check(expectedName: String, p: KProperty0<*>): String? {
    assertEquals(expectedName, p.name)
    assertEquals(emptyList<KParameter>(), p.parameters)
    assertEquals(emptyList<KTypeParameter>(), p.typeParameters)
    assertEquals(null, p.visibility) // "local" visibility is not representable with reflection API
    assertEquals("kotlin.collections.List<kotlin.String?>", p.returnType.toString())
    assertTrue(p.isFinal)
    assertFalse(p.isOpen)
    assertFalse(p.isAbstract)
    assertFalse(p.isLateinit)
    assertFalse(p.isConst)

    // TODO: support getDelegate for local delegated properties
    assertEquals(null, (p as KProperty0<*>).getDelegate())

    assertEquals(emptyList<KParameter>(), p.getter.parameters)
    assertEquals("kotlin.collections.List<kotlin.String?>", p.getter.returnType.toString())

    // TODO: support annotations
    assertEquals(emptyList<Annotation>(), p.annotations)

    try {
        p.call()
        return "Fail: reflective call of a local delegated property should fail because it's not supported"
    } catch (e: UnsupportedOperationException) {  /* ok */ }

    if (p is KMutableProperty0<*>) {
        assertEquals(listOf("kotlin.collections.List<kotlin.String?>"), p.setter.parameters.map { it.type.toString() })
        assertEquals("kotlin.Unit", p.setter.returnType.toString())

        try {
            p.setter.call()
            return "Fail: reflective call of a local delegated property setter should fail because it's not supported"
        } catch (e: UnsupportedOperationException) {  /* ok */ }
    }

    return null
}

annotation class Anno

fun box(): String {
    @Anno
    val localVal by Delegate
    localVal

    check("localVal", Delegate.property as KProperty0<*>)?.let { error -> return error }

    @Anno
    var localVar by Delegate
    localVar

    check("localVar", Delegate.property as KProperty0<*>)?.let { error -> return error }

    return "OK"
}