package com.example.myapplication

import android.content.Context
import android.content.SharedPreferences
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.v7.app.AlertDialog
import android.view.Menu
import android.view.MenuInflater
import android.view.MenuItem
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

    private lateinit var sharedPreferences: SharedPreferences
    private var language: String = ""

    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        val menuInflater: MenuInflater = getMenuInflater()
        menuInflater.inflate(R.menu.main_menu, menu)

        return super.onCreateOptionsMenu(menu)
    }

    private fun initializeLanguage(language: String) {
        sharedPreferences.edit().putString("favLanguage", language).apply()
        message.text = getString(R.string.message, language)
    }

    private fun modifyLanguage(language: String) {
        AlertDialog.Builder(this)
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setTitle("Are you sure?")
            .setMessage("Do you want $language to be your favorite language?")
            .setPositiveButton(
                "Yes"
            ) { _, _ ->
                initializeLanguage(language)
            }
            .setNegativeButton("No", null)
            .show()
    }

    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
        super.onOptionsItemSelected(item)

        when (item?.itemId) {
            R.id.english -> {
                language = "English"
                modifyLanguage(language)
                return true
            }
            R.id.romanian -> {
                language = "Romanian"
                modifyLanguage(language)
                return true
            }
            R.id.french -> {
                language = "French"
                modifyLanguage(language)
                return true
            }
            else -> {
                return false
            }
        }
    }

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

        sharedPreferences = this.getSharedPreferences("com.example.sharedpreferences", Context.MODE_PRIVATE)

        language = sharedPreferences.getString("favLanguage", "")!!
        if (language == "")
            AlertDialog.Builder(this)
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setTitle("Select an option!")
                .setMessage("What language do you prefer to use?")
                .setPositiveButton(
                    "English"
                ) { _, _ ->
                    initializeLanguage("English")
                }
                .setNegativeButton(
                    "Romanian"
                ) { _, _ ->
                    initializeLanguage("Romanian")
                }
                .setNeutralButton(
                    "French"
                ) { _, _ ->
                    initializeLanguage("French")
                }
                .show()
        else message.text = getString(R.string.message, language)
    }
}