riff_app/app/src/main/java/fr/riff_app/riff/ui/programme/ProgrammeDayFragment.kt

package fr.riff_app.riff.ui.programme

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModelProviders
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import fr.riff_app.riff.R
import fr.riff_app.riff.planning.Planning
import fr.riff_app.riff.planning.Programme
import fr.riff_app.riff.weekdays


class ProgrammeDayFragment : Fragment() {

    private lateinit var recyclerView: RecyclerView
    private lateinit var viewAdapter: RecyclerView.Adapter<*>
    private lateinit var viewManager: RecyclerView.LayoutManager
    private val programmeOfTheDay: ArrayList<Programme> = ArrayList()


    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        val viewModel: ProgrammeDayViewModel = ViewModelProviders.of(this).get(ProgrammeDayViewModel::class.java)
        viewModel.day = arguments?.getString("day") ?: ""

        val root = inflater.inflate(R.layout.fragment_programme_day, container, false)

        Planning.instance.programmes.forEach {
            if (it.isThisDay(day = weekdays.indexOf(viewModel.day)))
                programmeOfTheDay.add(it)
        }
        viewManager = LinearLayoutManager(context)
        viewAdapter = ProgrammeAdapter(programmeOfTheDay, viewModel.day)
        recyclerView = root.findViewById<RecyclerView>(R.id.programme_recycler).apply {
            // use this setting to improve performance if you know that changes
            // in content do not change the layout size of the RecyclerView
            setHasFixedSize(true)
            layoutManager = viewManager
            adapter = viewAdapter
        }
        Planning.instance.currentProgramme.observe(viewLifecycleOwner,  Observer<String> {
            programmeOfTheDay.clear()
            Planning.instance.programmes.forEach {
                if (it.isThisDay(day = weekdays.indexOf(viewModel.day)))
                    programmeOfTheDay.add(it)
            }
            viewAdapter.notifyDataSetChanged()
        })

        Planning.instance.isDataFetched.observe(viewLifecycleOwner, Observer<Boolean> {
            viewAdapter.notifyDataSetChanged()
        })
        return root
    }


    companion object {
        @JvmStatic
        fun newInstance(day: String): ProgrammeDayFragment {
            val args = Bundle()
            args.putString("day", day)
            val f = ProgrammeDayFragment()
            f.arguments = args
            return f
        }
    }
}