package com.taskttl.ui.components

import androidx.compose.material3.DatePicker
import androidx.compose.material3.DatePickerDialog
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.material3.rememberDatePickerState
import androidx.compose.runtime.Composable
import kotlinx.datetime.LocalDateTime
import kotlinx.datetime.TimeZone
import kotlinx.datetime.toInstant
import kotlinx.datetime.toLocalDateTime
import org.jetbrains.compose.resources.stringResource
import taskttl.composeapp.generated.resources.Res
import taskttl.composeapp.generated.resources.cancel
import taskttl.composeapp.generated.resources.confirm
import kotlin.time.Clock
import kotlin.time.ExperimentalTime
import kotlin.time.Instant

@OptIn(ExperimentalMaterial3Api::class, ExperimentalTime::class)
@Composable
fun CompactDatePickerDialog(
    show: Boolean,
    initialSelected: LocalDateTime?,
    onConfirm: (LocalDateTime) -> Unit,
    onDismiss: () -> Unit
) {
    if (!show) return

    val initialMillis = (
            initialSelected?.toInstant(TimeZone.currentSystemDefault())
                ?: Clock.System.now()
            ).toEpochMilliseconds()

    val state = rememberDatePickerState(initialSelectedDateMillis = initialMillis)

    DatePickerDialog(
        onDismissRequest = onDismiss,
        confirmButton = {
            TextButton(
                onClick = {
                    val millis = state.selectedDateMillis
                    if (millis != null) {
                        val instant = Instant.fromEpochMilliseconds(millis)
                        val selected = instant.toLocalDateTime(TimeZone.currentSystemDefault())
                        onConfirm(selected)
                    }
                    onDismiss()
                }
            ) { Text(stringResource(Res.string.confirm)) }
        },
        dismissButton = {
            TextButton(onClick = onDismiss) { Text(stringResource(Res.string.cancel)) }
        }
    ) {
        DatePicker(
            state = state,
            headline = null,
            title = null,
            showModeToggle = false
        )
    }
}