tailscale-android/android/src/main/java/com/tailscale/ipn/ui/view/PermissionsView.kt

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause

package com.tailscale.ipn.ui.view

import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.outlined.KeyboardArrowRight
import androidx.compose.material.icons.filled.CheckCircle
import androidx.compose.material.icons.filled.Warning
import androidx.compose.material3.Icon
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import com.google.accompanist.permissions.ExperimentalPermissionsApi
import com.google.accompanist.permissions.isGranted
import com.google.accompanist.permissions.rememberMultiplePermissionsState
import com.tailscale.ipn.R
import com.tailscale.ipn.ui.model.Permissions
import com.tailscale.ipn.ui.util.itemsWithDividers

@OptIn(ExperimentalPermissionsApi::class)
@Composable
fun PermissionsView(nav: BackNavigation, openApplicationSettings: () -> Unit) {
  Scaffold(topBar = { Header(title = R.string.permissions, onBack = nav.onBack) }) { innerPadding ->
    val permissions = Permissions.all
    val permissionStates =
        rememberMultiplePermissionsState(permissions = permissions.map { it.name })
    val permissionsWithStates = permissions.zip(permissionStates.permissions)

    LazyColumn(modifier = Modifier.padding(innerPadding)) {
      itemsWithDividers(permissionsWithStates) { (permission, state) ->
        var modifier: Modifier = Modifier
        if (!state.status.isGranted) {
          modifier = modifier.clickable { openApplicationSettings() }
        }
        ListItem(
            modifier = modifier,
            leadingContent = {
              Icon(
                  if (state.status.isGranted) Icons.Filled.CheckCircle else Icons.Filled.Warning,
                  modifier = Modifier.size(24.dp),
                  contentDescription =
                      stringResource(if (state.status.isGranted) R.string.ok else R.string.warning))
            },
            headlineContent = {
              Text(stringResource(permission.title), style = MaterialTheme.typography.titleMedium)
            },
            supportingContent = {
              Text(
                  stringResource(
                      if (state.status.isGranted) permission.grantedDescription
                      else permission.neededDescription))
            },
            trailingContent = {
              if (!state.status.isGranted) {
                Icon(
                    Icons.AutoMirrored.Outlined.KeyboardArrowRight,
                    modifier = Modifier.size(24.dp),
                    contentDescription = stringResource(R.string.more))
              }
            },
        )
      }
    }
  }
}