dependencies {
    implementation("com.legstart:recursive-accordion-android:1.0.2")
}

// データを RecursiveItem でラップ
val item = RecursiveItem(
    id = "1",
    value = "親アイテム",
    children = listOf(
        RecursiveItem(id = "1-1", value = "子アイテム 1"),
        RecursiveItem(id = "1-2", value = "子アイテム 2"),
        RecursiveItem(
            id = "1-3",
            value = "子アイテム 3",
            children = listOf(
                RecursiveItem(id = "1-3-1", value = "孫アイテム 1"),
                RecursiveItem(id = "1-3-2", value = "孫アイテム 2"),
            )
        )
    )
)

@Composable
fun MyScreen() {
    // 展開状態を管理
    val expandedIds = remember { mutableStateSetOf<String>() }

    RecursiveAccordion(
        item = item,
        expandedIds = expandedIds,
        onToggle = { toggledItem ->
            if (toggledItem.id in expandedIds) {
                expandedIds.remove(toggledItem.id)
            } else {
                expandedIds.add(toggledItem.id)
            }
        },
        action = { current, isExpanded, onToggle ->
            // 展開/折りたたみボタン
            IconButton(onClick = onToggle) {
                Icon(
                    imageVector = Icons.Default.ArrowDropDown,
                    contentDescription = null,
                    modifier = Modifier.graphicsLayer {
                        rotationZ = if (isExpanded) 180f else 0f
                    }
                )
            }
        }
    ) { current ->
        // アイテムのコンテンツ
        Text(text = current.value)
    }
}

RecursiveAccordion(
    item = item,
    expandedIds = expandedIds,
    onToggle = { /* ... */ },
    animationDurationMillis = 500, // アニメーション時間（ミリ秒）
    // ...
) { /* ... */ }

RecursiveAccordion(
    item = item,
    expandedIds = expandedIds,
    onToggle = { /* ... */ },
    showLevelGuide = true, // レベルガイドの表示
    levelGuideWidth = 2.dp, // ガイドの幅
    levelGuideColor = Color.Gray, // ガイドの色
    levelLeadingPadding = 16.dp, // 各レベルのインデント幅
    // ...
) { /* ... */ }

@Composable
fun ItemList(items: List<RecursiveItem<String>>) {
    val expandedIds = remember { mutableStateSetOf<String>() }

    LazyColumn {
        items(items) { item ->
            RecursiveAccordion(
                item = item,
                expandedIds = expandedIds,
                onToggle = { toggledItem ->
                    if (toggledItem.id in expandedIds) {
                        expandedIds.remove(toggledItem.id)
                    } else {
                        expandedIds.add(toggledItem.id)
                    }
                },
                action = { current, isExpanded, onToggle ->
                    IconButton(onClick = onToggle) {
                        Icon(
                            imageVector = Icons.Default.ArrowDropDown,
                            contentDescription = null,
                            modifier = Modifier.graphicsLayer {
                                rotationZ = if (isExpanded) 180f else 0f
                            }
                        )
                    }
                }
            ) { current ->
                Text(
                    text = current.value,
                    modifier = Modifier.padding(16.dp)
                )
            }
        }
    }
}

data class RecursiveItem<T>(
    val id: String,              // アイテムの一意な ID
    val value: T,                // アイテムの値
    val children: List<RecursiveItem<T>> = emptyList() // 子アイテム
)