/*
 * Copyright 2021, Lawnchair
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package app.lawnchair.ui.preferences.components

import androidx.compose.animation.Crossfade
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.material.CircularProgressIndicator
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

@Composable
fun LoadingScreen(isLoading: Boolean, content: @Composable () -> Unit) {
    Crossfade(targetState = isLoading) {
        if (it) {
            Column(
                modifier = Modifier.fillMaxSize(),
                verticalArrangement = Arrangement.Center,
                horizontalAlignment = Alignment.CenterHorizontally,
            ) {
                CircularProgressIndicator()
            }
        } else {
            content()
        }
    }
}

@Composable
fun <T> LoadingScreen(obj: T?, content: @Composable (T) -> Unit) {
    LoadingScreen(isLoading = obj == null) {
        content(obj!!)
    }
}
