// Copyright (c) 2026 PaddlePaddle Authors. All Rights Reserved.
//
// 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 com.paddle.ocr.demo.ui.component

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.size
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

@Composable
fun LoadingOverlay(message: String = "Loading models...", modifier: Modifier = Modifier) {
    Box(
        modifier = modifier.fillMaxSize().background(MaterialTheme.colorScheme.background),
        contentAlignment = Alignment.Center,
    ) {
        Column(horizontalAlignment = Alignment.CenterHorizontally) {
            CircularProgressIndicator(modifier = Modifier.size(48.dp))
            Spacer(modifier = Modifier.height(16.dp))
            Text(text = message, style = MaterialTheme.typography.bodyLarge)
        }
    }
}
