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    /**
     * Obtain an item based on the ID
     */
    fun getNoteById(noteId: String): Note?
            = items.first { it.noteId == noteId }

    /**
     * Save a new item to the list
     */
    fun saveItem(item: Note) {

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class MockNotesRepository : NotesRepository {
    companion object {
        private val TAG = this::class.java.simpleName
    }

    private val factory = MockNotesDataSourceFactory()

    override val notes: LiveData<PagedList<Note>>

    init {

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data class Note(val noteId: String = UUID.randomUUID().toString()) {
    companion object {
        val DiffCallback = object : DiffUtil.ItemCallback<Note>() {
            override fun areItemsTheSame(oldItem: Note?, newItem: Note?): Boolean
                = oldItem != null && newItem != null && oldItem.noteId == newItem.noteId

            override fun areContentsTheSame(oldItem: Note?, newItem: Note?): Boolean
                = oldItem != null && newItem != null
                    && oldItem.noteId == newItem.noteId
                    && oldItem.title == newItem.title

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class NotesPagedListAdapter(val onClick: (Note) -> Unit) : PagedListAdapter<Note, ListItemViewHolder>(Note.DiffCallback) {
    companion object {
        private val TAG = this::class.java.simpleName
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ListItemViewHolder
        = ListItemViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.note_list_item, parent, false))

    override fun onBindViewHolder(holder: ListItemViewHolder, position: Int) {
        Log.d(TAG, "Binding view holder at position $position")

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    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_note_list)
        setSupportActionBar(note_list_toolbar)

        note_list_add_note.setOnClickListener {
            Log.d(TAG, "addNote button pressed")
            launchNoteDetailActivity(this)
        }

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package com.shellmonger.apps.mynotes.ui

import android.content.Context
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.PorterDuff
import android.graphics.drawable.ColorDrawable
import android.support.v4.content.ContextCompat
import android.support.v7.widget.RecyclerView
import android.support.v7.widget.helper.ItemTouchHelper

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        val adapter = NotesPagedListAdapter {
            launchNoteDetailActivity(this@NoteListActivity, it.noteId)
        }
        viewModel.notes.observe(this, Observer {
            it?.let { adapter.submitList(it) }
        })
        note_list_recyclerview.layoutManager = LinearLayoutManager(this).apply {
            orientation = LinearLayoutManager.VERTICAL
        }
        note_list_recyclerview.adapter = adapter

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// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.2.41'
    ext.appsync_version = '2.6.18'
    repositories {
        google()
        jcenter()
    }
    dependencies {

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query GetNote($noteId: ID!) {
  getNote(noteId: $noteId) {
    noteId
    title
    content
  }
}

query AllNotes($nextToken: String) {
  allNotes(nextToken: $nextToken) {

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package com.shellmonger.apps.mynotes.repositories.aws

import android.content.Context
import android.arch.lifecycle.LiveData
import android.arch.paging.LivePagedListBuilder
import android.arch.paging.PagedList
import com.shellmonger.apps.mynotes.models.Note
import com.shellmonger.apps.mynotes.repositories.NotesRepository
import com.shellmonger.apps.mynotes.services.AnalyticsService
import com.shellmonger.apps.mynotes.services.IdentityService