LarryHsiao/Nyx

package com.larryhsiao.nyx.jot

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.EditText
import android.widget.ImageView
import android.widget.TextView
import androidx.core.view.isVisible
import androidx.core.widget.doAfterTextChanged
import androidx.lifecycle.ViewModelProvider
import androidx.lifecycle.lifecycleScope
import androidx.navigation.fragment.findNavController
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.datepicker.MaterialDatePicker
import com.larryhsiao.clotho.date.DateCalendar
import com.larryhsiao.clotho.date.DateEndCalendar
import com.larryhsiao.nyx.NyxFragment
import com.larryhsiao.nyx.R
import com.larryhsiao.nyx.ViewModelFactory
import com.larryhsiao.nyx.core.jots.Jot
import com.larryhsiao.nyx.utils.DateRangeText

/**
 * Fragment for search jot by keyword.
 */
class JotSearchingFragment : NyxFragment() {
    private val viewModel by lazy {
        ViewModelProvider(this, ViewModelFactory(app)).get(JotsSearchingViewModel::class.java)
    }

    private val adapter by lazy {
        JotsAdapter(app.nyx(), lifecycleScope) {
            PreferJotAction(this, it, ::toJotFragment).fire()
        }
    }

    private fun toJotFragment(jot: Jot) {
        findNavController().navigate(
            JotSearchingFragmentDirections.actionJotSearchingFragmentToJotFragment(jot.id())
        )
    }

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

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        view.findViewById<RecyclerView>(R.id.jotsSearching_jotsRecyclerView).adapter = adapter
        view.findViewById<EditText>(R.id.jotsSearching_searchKeyword).doAfterTextChanged {
            viewModel.preferJots(it?.toString() ?: "")
        }
        viewModel.jots().observe(viewLifecycleOwner, ::loadJots)
        viewModel.dateRange().observe(viewLifecycleOwner) { setupDateRangeText(it, view) }
        setupDateRangeText(Pair(Long.MIN_VALUE, Long.MAX_VALUE), view)
    }

    private fun loadJots(jots: List<Jot>) {
        requireView().findViewById<View>(R.id.jotsSearching_emptyIcon).isVisible = jots.isEmpty()
        adapter.load(jots)
    }

    override fun onResume() {
        super.onResume()
        viewModel.reload()
    }

    private fun setupDateRangeText(it: Pair<Long, Long>, view: View) {
        val dateRangeText = view.findViewById<TextView>(R.id.dateRangeIndicator_dateRangeText)
        val dateRangeIcon = view.findViewById<ImageView>(R.id.dateRangeIndicator_dateRangeIcon)
        if (it.second == Long.MAX_VALUE && it.first == Long.MIN_VALUE) {
            dateRangeText.text = ""
            dateRangeText.visibility = View.GONE
            dateRangeIcon.setImageResource(R.drawable.ic_calendar)
            dateRangeIcon.setOnClickListener { showDatePicker() }
        } else {
            dateRangeText.text = DateRangeText(
                DateCalendar(it.first),
                DateEndCalendar(it.second)
            ).value()
            dateRangeText.visibility = View.VISIBLE
            dateRangeIcon.setImageResource(R.drawable.ic_cross)
            dateRangeIcon.setOnClickListener { viewModel.clearDateRange() }
        }
        dateRangeText.setOnClickListener { showDatePicker() }
    }

    private fun showDatePicker() {
        val datePicker = MaterialDatePicker.Builder.dateRangePicker()
            .setTitleText(R.string.Select_date_range)
            .setSelection(
                androidx.core.util.Pair(
                    MaterialDatePicker.todayInUtcMilliseconds(),
                    MaterialDatePicker.todayInUtcMilliseconds()
                )
            )
            .build()
        datePicker.addOnPositiveButtonClickListener {
            viewModel.preferDateRange(it.first, it.second)
        }
        datePicker.show(childFragmentManager, null)
    }
}