technik-logger-app/app/src/main/java/com/cyb3rko/techniklogger/MainActivity.kt

package com.cyb3rko.techniklogger

import android.content.SharedPreferences
import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.widget.Toast

import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager

import com.afollestad.materialdialogs.MaterialDialog
import com.afollestad.materialdialogs.input.getInputField
import com.afollestad.materialdialogs.input.input
import com.cyb3rko.techniklogger.recycler.ProjectEntryViewHolder
import com.cyb3rko.techniklogger.recycler.ProjectViewState
import com.google.firebase.database.*

import java.lang.IndexOutOfBoundsException

import kotlinx.android.synthetic.main.activity_main.*

import me.ibrahimyilmaz.kiel.adapter.RecyclerViewAdapter.Companion.adapterOf

class MainActivity : AppCompatActivity() {

    private val data: MutableList<ProjectViewState.ProjectEntry> = mutableListOf()
    private lateinit var databaseReference: DatabaseReference
    private lateinit var sharedPref: SharedPreferences

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

        sharedPref = getSharedPreferences("Safe", 0)
        databaseReference = FirebaseDatabase.getInstance().reference

        if (sharedPref.getString("name", "") == "") {
            showNameDialog()
        }

        val adapter = adapterOf<ProjectViewState> {
            register(
                layoutResource = R.layout.item_recycler_projects,
                viewHolder = ::ProjectEntryViewHolder,
                onBindBindViewHolder = { vh, _, text ->
                    vh.textView.text = text.text
                    vh.locationView.text = text.location
                    vh.dateView.text = text.date
                    vh.itemView.setOnClickListener {
                        ProjectActivityBuilder(applicationContext)
                            .setKey(text.childKey)
                            .start()
                    }
                }
            )
        }

        val listener = object: ChildEventListener {
            override fun onChildAdded(snapshot: DataSnapshot, previousChildName: String?) {
                data.add(data.size, ProjectViewState.ProjectEntry(
                    snapshot.key!!,
                    snapshot.child("name").value.toString(),
                    snapshot.child("location").value.toString(),
                    snapshot.child("date").value.toString())
                )
                hideProgess()
                recycler_view.scheduleLayoutAnimation()
                adapter.notifyDataSetChanged()
            }

            override fun onChildChanged(snapshot: DataSnapshot, previousChildName: String?) {
            }

            override fun onChildRemoved(snapshot: DataSnapshot) {
                data.remove(ProjectViewState.ProjectEntry(
                    snapshot.key!!,
                    snapshot.child("name").value.toString(),
                    snapshot.child("location").value.toString(),
                    snapshot.child("date").value.toString())
                )
                recycler_view.scheduleLayoutAnimation()
                adapter.notifyDataSetChanged()
            }

            override fun onChildMoved(snapshot: DataSnapshot, previousChildName: String?) {
            }

            override fun onCancelled(error: DatabaseError) {
                Toast.makeText(applicationContext, "Abruf fehlgeschlagen", Toast.LENGTH_SHORT).show()
            }
        }

        adapter.submitList(data as List<ProjectViewState>?)
        val linearLayoutManager = LinearLayoutManager(applicationContext)
        linearLayoutManager.reverseLayout = true
        linearLayoutManager.stackFromEnd = true
        recycler_view.layoutManager = linearLayoutManager
        recycler_view.adapter = adapter

        databaseReference.addChildEventListener(listener)
    }

    private fun showNameDialog() {
        val currentName = getSharedPreferences("Safe", 0).getString("name", "")

        MaterialDialog(this)
            .cancelable(false)
            .title(0, "Bitte gebe deinen Namen ein")
            .show {
                input(hint = "Dein Name", prefill = currentName, waitForPositiveButton = false) { dialog, inputName ->
                    try {
                        if (!inputName[0].isUpperCase()) {
                            dialog.getInputField().error = "Der Anfangsbuchstabe sollte groß sein"
                        }
                    } catch (ignored: IndexOutOfBoundsException) {
                    }

                    positiveButton {
                        sharedPref.edit().putString("name", inputName.toString()).apply()
                    }
                }
                positiveButton(0, "Speichern")
            }
    }

    private fun hideProgess() {
        progress_bar.visibility = View.GONE
    }

    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        // Inflate the menu; this adds items to the action bar if it is present.
        menuInflater.inflate(R.menu.menu_main, menu)
        return true
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        when (item.itemId) {
            R.id.action_rename -> showNameDialog()
//            R.id.action_icons -> setContentView(AboutIcons(applicationContext, R.drawable::class.java).setTitle("Benutzte Icons").get())
//            R.id.action_libraries -> LibsBuilder().start(this)
//            R.id.action_privacy_policy ->
//            R.id.action_terms_of_use ->
        }

        return super.onOptionsItemSelected(item)
    }
}