coding-blocks/CBOnlineApp

package com.codingblocks.cbonlineapp.course

import android.app.Activity
import android.app.Dialog
import android.content.DialogInterface
import android.os.Bundle
import android.util.DisplayMetrics
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.annotation.NonNull
import androidx.core.view.isVisible
import androidx.lifecycle.distinctUntilChanged
import androidx.lifecycle.observe
import com.codingblocks.cbonlineapp.R
import com.codingblocks.cbonlineapp.course.batches.RUNTIERS
import com.codingblocks.cbonlineapp.util.extensions.setRv
import com.codingblocks.cbonlineapp.util.livedata.observer
import com.google.android.material.bottomsheet.BottomSheetBehavior
import com.google.android.material.bottomsheet.BottomSheetDialog
import com.google.android.material.bottomsheet.BottomSheetDialogFragment
import kotlinx.android.synthetic.main.fragment_all_section_course.view.*
import org.koin.androidx.viewmodel.ext.android.sharedViewModel

class CourseSectionAllFragment : BottomSheetDialogFragment() {

    private val viewModel: CourseViewModel by sharedViewModel()
    private val courseSectionListAllAdapter = CourseSectionListAdapter()

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view = inflater.inflate(R.layout.fragment_all_section_course, container, false)

        viewModel.fetchCourse()

        view.closeBtn.setOnClickListener {
            dialog?.dismiss()
        }

        viewModel.course.distinctUntilChanged().observer(this) { course ->
            course.getContentRun(RUNTIERS.PREMIUM.name)?.let {
                it.sections?.let { it1 -> viewModel.fetchSections(it1) }
            }
        }

        viewModel.sections.observe(this) { sections ->
            if (!sections.isNullOrEmpty()) {
                view.contentShimmer.stopShimmer()
                view.contentShimmer.isVisible = false
                courseSectionListAllAdapter.submitList(sections)
            }
        }

        view.courseContentAllRv.setRv(requireContext(), courseSectionListAllAdapter, true)

        return view
    }

    @NonNull
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val dialog: Dialog = super.onCreateDialog(savedInstanceState)
        dialog.setOnShowListener(
            DialogInterface.OnShowListener { dialogInterface ->
                val bottomSheetDialog = dialogInterface as BottomSheetDialog
                setupFullHeight(bottomSheetDialog)
            }
        )
        return dialog
    }

    private fun setupFullHeight(bottomSheetDialog: BottomSheetDialog) {
        val sheet = bottomSheetDialog.findViewById<View>(com.google.android.material.R.id.design_bottom_sheet)!!
        val layoutParams = sheet.layoutParams
        val windowHeight = getWindowHeight()
        if (layoutParams != null) {
            layoutParams.height = windowHeight
        }
        sheet.layoutParams = layoutParams
        BottomSheetBehavior.from(sheet).state = BottomSheetBehavior.STATE_EXPANDED
    }

    private fun getWindowHeight(): Int { // Calculate window height for fullscreen use
        val displayMetrics = DisplayMetrics()
        (context as Activity?)!!.windowManager.defaultDisplay.getMetrics(displayMetrics)
        return displayMetrics.heightPixels
    }
}