package __PACKAGE__.conformance

import androidx.compose.material3.MaterialTheme
import androidx.compose.ui.test.ExperimentalTestApi
import androidx.compose.ui.test.assertHeightIsAtLeast
import androidx.compose.ui.test.assertWidthIsAtLeast
import androidx.compose.ui.test.hasTestTag
import androidx.compose.ui.test.hasText
import androidx.compose.ui.test.onNodeWithTag
import androidx.compose.ui.test.runComposeUiTest
import androidx.compose.ui.unit.dp
import __PACKAGE__.domain.model.DomainError
import __PACKAGE__.domain.model.Item
import __PACKAGE__.domain.usecase.GetItemsUseCase
import __PACKAGE__.presentation.home.HomeScreen
import __PACKAGE__.presentation.home.HomeViewModel
import __PACKAGE__.testing.awaitNode
import __PACKAGE__.testing.fakes.FakeItemRepository
import kotlin.test.Test

/**
 * The COMP clauses (`specs/app-base.spec.md`) as executable checks — the component
 * vocabulary's runtime contract, proven against the exemplar screen the same way the
 * ARCH/SHELL conformance gates prove the architecture. Component substructure/tag
 * stability is additionally pinned by the golden-tree baseline (`qa/golden/`); this class
 * proves the STATE/A11Y contract every registry consumer inherits for free.
 */
@OptIn(ExperimentalTestApi::class)
class ComponentConformanceTest {

    // SPEC: COMP-01
    @Test
    fun `a failed load is presented by ContentStateContainer with the screen-derived error tag`() = runComposeUiTest {
        val repository = FakeItemRepository().apply { failure = DomainError.Network }
        setContent {
            MaterialTheme {
                HomeScreen(onItemClick = {}, viewModel = HomeViewModel(GetItemsUseCase(repository)))
            }
        }
        awaitNode(hasTestTag("home_error"))
    }

    // SPEC: COMP-01
    @Test
    fun `a zero-item load is presented by ContentStateContainer with the screen-derived empty tag`() = runComposeUiTest {
        val repository = FakeItemRepository().apply { items = emptyList() }
        setContent {
            MaterialTheme {
                HomeScreen(onItemClick = {}, viewModel = HomeViewModel(GetItemsUseCase(repository)))
            }
        }
        awaitNode(hasTestTag("home_empty"))
    }

    // SPEC: COMP-02
    @Test
    fun `a recoverable error renders a retry control of at least 48dp`() = runComposeUiTest {
        val repository = FakeItemRepository().apply { failure = DomainError.Network }
        setContent {
            MaterialTheme {
                HomeScreen(onItemClick = {}, viewModel = HomeViewModel(GetItemsUseCase(repository)))
            }
        }
        awaitNode(hasTestTag("home_retry"))
        onNodeWithTag("home_retry")
            .assertWidthIsAtLeast(48.dp)
            .assertHeightIsAtLeast(48.dp)
    }

    // SPEC: COMP-03
    @Test
    fun `every ListItemCard row clears the 48dp minimum pointer target`() = runComposeUiTest {
        val repository = FakeItemRepository().apply {
            items = listOf(Item(id = "1", title = "Row", subtitle = "sub"))
        }
        setContent {
            MaterialTheme {
                HomeScreen(onItemClick = {}, viewModel = HomeViewModel(GetItemsUseCase(repository)))
            }
        }
        awaitNode(hasText("Row"))
        onNodeWithTag("home_item_1").assertHeightIsAtLeast(48.dp)
    }
}