package com.example.chatapp

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import android.util.Log
import android.widget.TextView
import com.google.firebase.database.*
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.ValueEventListener


class MainActivity : AppCompatActivity() {

    val database = FirebaseDatabase.getInstance()
    var myRef = database.getReference("Users")
    var TAG = "Here"

    companion object {
        var str = ""
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        var maxid = 0
        val regbut = findViewById<Button>(R.id.registerbut)
        val loginbut = findViewById<Button>(R.id.loginbut)
        val username = findViewById<EditText>(R.id.username)
        val password = findViewById<EditText>(R.id.password)
        val textview = findViewById<TextView>(R.id.textView)
        var user = User()

        regbut.setOnClickListener {
            user.username = username.text.toString()
            user.password = password.text.toString()
            var y = 0
            myRef = database.getReference("Users").child(username.text.toString())
            val reff = database.getReference("Users").child(username.text.toString())
            reff.addValueEventListener(object : ValueEventListener {
                override fun onDataChange(dataSnapshot: DataSnapshot) {
                    var l = dataSnapshot.childrenCount
                    if (dataSnapshot.exists()) {
                        var uss = dataSnapshot.child("username").getValue().toString()
                        Log.d(TAG, uss)
                        if (username.text.toString() == uss) {
                            textview.text = "Username Exist"
                            reff.removeEventListener(this)
                        }
                        if (y == (l - 1).toInt()) {
                            Log.d(TAG, "hi")
                            myRef = database.getReference("Users")
                            myRef.child(username.text.toString()).setValue(user)
                            textview.text = "Registered"
                            Log.d(TAG, "Registered")
                            reff.removeEventListener(this)
                        } else {
                            y = y + 1
                            Log.d(TAG, y.toString())
                        }
                    } else {
                        myRef = database.getReference("Users")
                        myRef.child(username.text.toString()).setValue(user)
                        textview.text = "Registered"
                        Log.d(TAG, "Registered")
                        reff.removeEventListener(this)
                    }
                }

                override fun onCancelled(p0: DatabaseError) {
                }
            })

        }

        loginbut.setOnClickListener {
            //var inn = Intent(this@MainActivity, Test::class.java)
            val int = Intent(this@MainActivity, Chat::class.java)
            //str = username.text.toString()
            int.putExtra(str,str)
            startActivity(int)
        }


        /**logbut.setOnClickListener {
            myRef = database.getReference("Users").child(username.text.toString().trim())
            val ref = FirebaseDatabase.getInstance().getReference("/Users")
            var x = 0
            val reff = database.getReference("Users").child(username.text.toString())
            reff.addValueEventListener(object : ValueEventListener {
                override fun onDataChange(dataSnapshot: DataSnapshot) {
                    if (!dataSnapshot.exists()) {
                        ref.removeEventListener(this)
                        textview.text = "Username Doesn't Exist"
                    }else{
                        if(dataSnapshot.child("username").getValue()==username.text.toString()){
                            if(dataSnapshot.child("password").getValue()==password.text.toString()){
                                textview.text="Logged In"
                                //var inn = Intent(this@MainActivity, Test::class.java)
                                var int = Intent(this@MainActivity, Test::class.java)
                                //str = username.text.toString()
                                //inn.putExtra(str,str)
                                startActivity(int)
                                try {
                                    //startActivity(inn)
                                }catch(e: Exception){
                                    Log.d("strpapa",e.toString())
                                }
                            }else{
                                textview.text = "Wrong Password"
                            }
                        }
                    }
                }
                override fun onCancelled(p0: DatabaseError) {
                }
            })
        }**/
    }
}