/*
 * Copyright (c) 2025 Meshtastic LLC
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.geeksville.mesh.ui

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.ComposeView
import androidx.compose.ui.platform.ViewCompositionStrategy
import androidx.compose.ui.res.stringResource
import androidx.core.os.bundleOf
import androidx.fragment.app.FragmentManager
import androidx.fragment.app.viewModels
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import androidx.navigation.NavHostController
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.rememberNavController
import com.geeksville.mesh.R
import com.geeksville.mesh.android.Logging
import com.geeksville.mesh.navigation.Route
import com.geeksville.mesh.navigation.addNodDetailSection
import com.geeksville.mesh.navigation.addRadioConfigSection
import com.geeksville.mesh.navigation.navigateToSharedMessage
import com.geeksville.mesh.navigation.shareScreen
import com.geeksville.mesh.ui.components.BaseScaffold
import com.geeksville.mesh.ui.radioconfig.RadioConfigViewModel
import com.geeksville.mesh.ui.theme.AppTheme
import dagger.hilt.android.AndroidEntryPoint

internal fun FragmentManager.navigateToNavGraph(
    destNum: Int? = null,
    startDestination: String = "RadioConfig",
) {
    val radioConfigFragment = NavGraphFragment().apply {
        arguments = bundleOf("destNum" to destNum, "startDestination" to startDestination)
    }
    beginTransaction()
        .replace(R.id.mainActivityLayout, radioConfigFragment)
        .addToBackStack(null)
        .commit()
}

@AndroidEntryPoint
class NavGraphFragment : ScreenFragment("NavGraph"), Logging {

    private val model: RadioConfigViewModel by viewModels()

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        @Suppress("DEPRECATION")
        val destNum = arguments?.getSerializable("destNum") as? Int
        val startDestination: Any = when (arguments?.getString("startDestination")) {
            "NodeDetails" -> Route.NodeDetail(destNum!!)
            else -> Route.RadioConfig(destNum)
        }

        return ComposeView(requireContext()).apply {
            setViewCompositionStrategy(ViewCompositionStrategy.DisposeOnViewTreeLifecycleDestroyed)
            setContent {
                val node by model.destNode.collectAsStateWithLifecycle()

                AppTheme {
                    val navController: NavHostController = rememberNavController()
                    BaseScaffold(
                        title = node?.user?.longName
                            ?: stringResource(R.string.unknown_username),
                        canNavigateBack = true,
                        navigateUp = {
                            if (navController.previousBackStackEntry != null) {
                                navController.navigateUp()
                            } else {
                                parentFragmentManager.popBackStack()
                            }
                        },
                    ) {
                        NavGraph(
                            navController = navController,
                            startDestination = startDestination,
                        )
                    }
                }
            }
        }
    }
}

@Composable
fun NavGraph(
    navController: NavHostController = rememberNavController(),
    startDestination: Any,
    modifier: Modifier = Modifier,
) {
    NavHost(
        navController = navController,
        startDestination = startDestination,
        modifier = modifier,
    ) {
        addNodDetailSection(navController)
        addRadioConfigSection(navController)
        shareScreen(
            navigateUp = navController::navigateUp,
            onConfirm = navController::navigateToSharedMessage,
        )
    }
}