class BlankFragment2 : Fragment() {


    private var ingredientViewModel : IngredientViewModel? = null
    private var categoryViewModel : CategoryViewModel? = null
    private var adapter : IngredientAdapter? = null


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setHasOptionsMenu(true)

        ingredientViewModel = ViewModelProvider(activity!!).get(IngredientViewModel::class.java)

        categoryViewModel = ViewModelProvider(activity!!).get(CategoryViewModel::class.java)

        adapter = IngredientAdapter(context!!)



    }
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_blank2, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        (activity as AppCompatActivity).setSupportActionBar(bottombar)
        (activity as AppCompatActivity).supportActionBar!!.setDisplayHomeAsUpEnabled(true)


        setObserver(adapter!!)

        rvIngs.adapter = adapter
        rvIngs.layoutManager = GridLayoutManager(context, 2)



        chipgroup.setOnCheckedChangeListener { p0, p1 ->

            if(p1 != -1){
                adapter!!.filter.filter((p0[p1-1] as Chip).text)
            } else {
                adapter!!.filter.filter(null)
            }
        }

    }

    private fun setObserver(adapter: IngredientAdapter){

        ingredientViewModel!!.getIngs().observe(viewLifecycleOwner, Observer {
            adapter!!.setIngCopyList(it)
            adapter!!.submitList(it)
        })


        categoryViewModel!!.getCats().observe(viewLifecycleOwner, Observer {
            adapter.setCatCopyList(it)

            for (cat in it){
                val chip = layoutInflater.inflate(R.layout.chip_style, chipgroup, false) as Chip
                chip.text = cat.catName
                chip.isCheckable
                chip.isClickable
                chipgroup.addView(chip)
            }
        })

    }


    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
        inflater.inflate(R.menu.ing_bot_menu, menu)
        super.onCreateOptionsMenu(menu, inflater)
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        when (item.itemId) {
            android.R.id.home -> findNavController().navigateUp()
        }
        return super.onOptionsItemSelected(item)
    }

}