/*

 * AboutOss is an utility library to retrieve and display

 * opensource licenses in Android applications.

 *

 * Copyright (C) 2023-2025 by Frederic-Charles Barthelery.

 *

 * This file is part of AboutOss.

 *

 * AboutOss 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.

 *

 * AboutOss 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 AboutOss.  If not, see <http://www.gnu.org/licenses/>.

 */

package com.geekorum.aboutoss.ui.material

import android.net.Uri

import android.os.Bundle

import androidx.activity.compose.setContent

import androidx.compose.material.MaterialTheme

import androidx.compose.runtime.Composable

import androidx.navigation.compose.NavHost

import androidx.navigation.compose.composable

import androidx.navigation.compose.rememberNavController

import com.geekorum.aboutoss.ui.common.BaseOpensourceLicenseActivity

import com.geekorum.aboutoss.ui.common.OpenSourceLicensesViewModel

/**

 * Activity to display opensource license information

 *

 * This activity use Material compose to create the UI.

 * You can specify the Material theme to use by setting [themeProvider]

 * before launching the activity

 */

open class OpenSourceLicensesActivity : BaseOpensourceLicenseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContent {

            themeProvider {

                DependencyNavHost(

                    openSourceLicensesViewModel = viewModel,

                    navigateUp = {

                        if (!onNavigateUp()) {

                            finish()

                        }

                    }

                )

            }

        }

    }

    companion object {

        /**

         * The composable Theme function to set the theme of the UI in [OpenSourceLicensesActivity]

         * Default to base material theme [MaterialTheme]

         */

        var themeProvider: @Composable (@Composable () -> Unit) -> Unit = { content ->

            MaterialTheme(content = content)

        }

    }

}

@Composable

fun DependencyNavHost(

    openSourceLicensesViewModel: OpenSourceLicensesViewModel,

    navigateUp: () -> Unit

) {

    val navController = rememberNavController()

    NavHost(navController, startDestination = "dependencies") {

        composable("dependencies") {

            OpenSourceDependenciesListScreen(

                viewModel = openSourceLicensesViewModel,

                onDependencyClick = {

                    navController.navigate("dependency_license/${Uri.encode(it)}")

                },

                onUpClick = navigateUp

            )

        }

        composable("dependency_license/{dependency}") {

            val dependency = requireNotNull(it.arguments?.getString("dependency"))

            OpenSourceLicenseScreen(

                viewModel = openSourceLicensesViewModel,

                dependency = dependency,

                onUpClick = {

                    navController.popBackStack()

                },

            )

        }

    }

}