Debounce.kt

import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import kotlinx.datetime.Clock

internal const val DEFAULT_DEBOUNCE_TIME = 1000L

private class EventProcessor {
    private val now: Long
        get() = Clock.System.now().toEpochMilliseconds()

    private var lastEventTimeMs: Long = 0

    fun processEvent(debounceTimeMillis: Long, event: () -> Unit) {
        if (debounceTimeMillis <= 0) return event()

        if (now - lastEventTimeMs >= debounceTimeMillis) {
            event()
            lastEventTimeMs = now
        }
    }
}

@Composable
fun debouncedLambda(debounceTimeMillis: Long = DEFAULT_DEBOUNCE_TIME, onClick: () -> Unit): () -> Unit {
    val eventProcessor = remember { EventProcessor() }

    return {
        eventProcessor.processEvent(debounceTimeMillis) { onClick() }
    }
}