/*
 * Copyright 2021 The Android Open Source Project
 *
 * 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
 *
 *      https://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.google.accompanist.sample.permissions

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.height
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.google.accompanist.permissions.ExperimentalPermissionsApi
import com.google.accompanist.permissions.isGranted
import com.google.accompanist.permissions.rememberPermissionState
import com.google.accompanist.permissions.shouldShowRationale
import com.google.accompanist.sample.AccompanistSampleTheme

class RequestPermissionSample : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
            AccompanistSampleTheme {
                Sample()
            }
        }
    }
}

@OptIn(ExperimentalPermissionsApi::class)
@Composable
private fun Sample() {
    val cameraPermissionState = rememberPermissionState(android.Manifest.permission.CAMERA)
    if (cameraPermissionState.status.isGranted) {
        Text("Camera permission Granted")
    } else {
        Column {
            val textToShow = if (cameraPermissionState.status.shouldShowRationale) {
                "The camera is important for this app. Please grant the permission."
            } else {
                "Camera not available"
            }

            Text(textToShow)
            Spacer(modifier = Modifier.height(8.dp))
            Button(onClick = { cameraPermissionState.launchPermissionRequest() }) {
                Text("Request permission")
            }
        }
    }
}
