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

package com.tailscale.ipn.ui.view

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.safeContentPadding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import com.tailscale.ipn.R
import com.tailscale.ipn.mdm.MDMSettings
import com.tailscale.ipn.ui.viewModel.IpnViewModel

@Composable
fun ManagedByView(backToSettings: BackNavigation, model: IpnViewModel = viewModel()) {
  Scaffold(topBar = { Header(R.string.managed_by, onBack = backToSettings) }) { innerPadding ->
    Column(
        verticalArrangement =
            Arrangement.spacedBy(space = 20.dp, alignment = Alignment.CenterVertically),
        horizontalAlignment = Alignment.Start,
        modifier = Modifier.fillMaxWidth().safeContentPadding().verticalScroll(rememberScrollState())) {
          val managedByOrganization =
              MDMSettings.managedByOrganizationName.flow.collectAsState().value
          val managedByCaption = MDMSettings.managedByCaption.flow.collectAsState().value
          val managedByURL = MDMSettings.managedByURL.flow.collectAsState().value
          managedByOrganization?.let {
            Text(stringResource(R.string.managed_by_explainer_orgName, it))
          } ?: run { Text(stringResource(R.string.managed_by_explainer)) }
          managedByCaption?.let {
            if (it.isNotEmpty()) {
              Text(it)
            }
          }
          managedByURL?.let { OpenURLButton(stringResource(R.string.open_support), it) }
        }
  }
}