// NavigationAppl
package com.example.navigationappl

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.example.navigationappl.ui.theme.NavigationApplTheme
import androidx.navigation.NavController
import androidx.compose.navigation.compose.NavHost
import androidx.navigation.compose.composale
import androidx.navigation.compose.rememberNavController

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            NavigationApplTheme {
                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
                    Navigation(
                        modifier = Modifier.padding(innerPadding)
                    )
                }
            }
        }
    }
}

@Composable
fun Navigation(modifier: Modifier = Modifier) {
    val  navController rememberNavController()
    NavHost(navController = navController, startDestination = "firstScreen")
    {
        composable(route = "firstScreen"){FirstScreen(navController)}
        composable(route = "second"){SecondScreen(navController)}
        composable(route = "third"){Thirdscreen(navController)}

    }

}

@Composable
fun FirstScreen(navController:NavController){
    Column(
        verticalArrangement = Arrangement.SpaceAround,
        horizontalAlignment = Alignment.CenterHorizontally,
        modifier = Modifier
            .fillMaxSize()
            .background(Color.LightGray)
            .padding(10.dp)
    ) {
        Text(
            text = "FIRST SCREEN",
            fontSize = 30.sp,
            fontWeight = FontWeight.Bold,
            color = Color.Black
        )
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "SECOND",
                    fontSize = 20.sp
                )
            }
        }
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "THIRD",
                    fontSize = 20.sp
                )
            }
        }

    }
}

@Composable
fun SecondScreen(){
    Column(
        verticalArrangement = Arrangement.SpaceAround,
        horizontalAlignment = Alignment.CenterHorizontally,
        modifier = Modifier
            .fillMaxSize()
            .background(Color.LightGray)
            .padding(10.dp)
    ) {
        Text(
            text = "SECOND SCREEN",
            fontSize = 30.sp,
            fontWeight = FontWeight.Bold,
            color = Color.Black
        )
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "FIRST",
                    fontSize = 20.sp
                )
            }
        }
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "THIRD",
                    fontSize = 20.sp
                )
            }
        }

    }
}

@Composable
fun ThirdScreen(){
    Column(
        verticalArrangement = Arrangement.SpaceAround,
        horizontalAlignment = Alignment.CenterHorizontally,
        modifier = Modifier
            .fillMaxSize()
            .background(Color.LightGray)
            .padding(10.dp)
    ) {
        Text(
            text = "FIRST SCREEN",
            fontSize = 30.sp,
            fontWeight = FontWeight.Bold,
            color = Color.Black
        )
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "FIRST",
                    fontSize = 20.sp
                )
            }
        }
        Row(
            horizontalArrangement = Arrangement.SpaceAround,
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()

        ) {
            Button(onClick = {}) {
                Text(
                    text = "SECOND",
                    fontSize = 20.sp
                )
            }
        }

    }
}

@Preview(showBackground = true)
@Composable
fun GreetingPreview() {
    NavigationApplTheme {
        Navigation(modifier = Modifier)
    }
}