# KnowledgeFragment.kt

    /*
     * The MIT License
     *
     * Original work sponsored and donated by The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     * Copyright (C) 2021 The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the "Software"), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     * of the Software, and to permit persons to whom the Software is furnished to do
     * so, subject to the following conditions:
     *
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */

    package dk.nsp.mingraviditet.ui.main.knowledge

    import android.app.Activity
    import android.os.Build
    import android.os.Bundle
    import android.view.LayoutInflater
    import android.view.View
    import android.view.ViewGroup
    import android.view.WindowInsets
    import android.view.inputmethod.InputMethodManager
    import androidx.core.widget.doOnTextChanged
    import androidx.fragment.app.Fragment
    import androidx.fragment.app.viewModels
    import androidx.navigation.fragment.findNavController
    import com.commonsense.android.kotlin.views.extensions.scrollToTop
    import com.google.android.material.snackbar.Snackbar
    import dagger.hilt.android.AndroidEntryPoint
    import dk.nsp.mingraviditet.R
    import dk.nsp.mingraviditet.databinding.FragmentKnowledgeBinding
    import dk.nsp.mingraviditet.domain.InfoBoxModel
    import dk.nsp.mingraviditet.ui.main.common.DataCardStateViewModel
    import dk.nsp.mingraviditet.ui.widgets.BottomInfoToggler
    import dk.nsp.mingraviditet.util.android.recycler.DelegatingListAdapter
    import dk.nsp.mingraviditet.util.extensions.handleToolbarState
    import dk.nsp.mingraviditet.util.extensions.navigateSafe
    import dk.nsp.mingraviditet.util.extensions.observeIfNotHandled
    import dk.nsp.mingraviditet.util.extensions.setupToolbarStateListener

    @AndroidEntryPoint
    class KnowledgeFragment : Fragment() {
        private lateinit var binding: FragmentKnowledgeBinding

        private val knowledgeViewModel: KnowledgeViewModel by viewModels()
        private val infoBoxViewModel: DataCardStateViewModel by viewModels()

        private val adapter by lazy {
            DelegatingListAdapter()
        }

        private var infoToggler: BottomInfoToggler? = null

        override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?
        ): View {
            binding = FragmentKnowledgeBinding.inflate(inflater, container, false)
            binding.toolbarTitle.setText(R.string.bottom_navigation_title_knowledge)

            binding.recyclerview.adapter = adapter

            knowledgeViewModel.onChecklistClicked.observeIfNotHandled(viewLifecycleOwner) {
                findNavController().navigateSafe(
                    KnowledgeFragmentDirections.actionKnowledgeFragmentToChecklistDetailsFragment(it.id)
                )
            }

            knowledgeViewModel.onDataCombined.observe(viewLifecycleOwner) {
                adapter.submitList(it) {
                    binding.recyclerview.scrollToTop(false)
                    binding.recyclerview.scheduleLayoutAnimation()
                }
            }

            knowledgeViewModel.onError.observeIfNotHandled(viewLifecycleOwner) {
                Snackbar.make(binding.root, it, Snackbar.LENGTH_LONG)
                    .setAction(R.string.common_ok) {}
                    .show()
            }

            knowledgeViewModel.onArticleCategoryClicked.observeIfNotHandled(viewLifecycleOwner) {
                findNavController().navigateSafe(
                    KnowledgeFragmentDirections.actionKnowledgeFragmentToKnowledgeArticlesFragment(
                        it
                    )
                )
            }

            binding.searchBar.doOnTextChanged { text, _, _, _ ->
                text?.toString()?.let { searchTerm ->
                    knowledgeViewModel.searchFor(searchTerm)
                }
            }

            knowledgeViewModel.searchResults.observe(viewLifecycleOwner) {
                adapter.submitList(it)
            }

            knowledgeViewModel.onSearchArticleClicked.observeIfNotHandled(viewLifecycleOwner) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
                    binding.root.windowInsetsController?.hide(WindowInsets.Type.ime())
                } else {
                    val inputMethodManager =
                        context?.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
                    inputMethodManager.hideSoftInputFromWindow(binding.root.windowToken, 0)
                }
                findNavController().navigateSafe(
                    KnowledgeFragmentDirections.actionKnowledgeFragmentToKnowledgeArticleFragment(
                        it.first,
                        it.second
                    )
                )
            }

            infoToggler = BottomInfoToggler(binding.bottomInfo.bottomInfo, binding.recyclerview)
            infoBoxViewModel.infoBox.observe(viewLifecycleOwner) {
                if (it is InfoBoxModel.Orange) {
                    binding.bottomInfo.setBottomInfo(it)
                } else {
                    binding.bottomInfo.setBottomInfo(null)
                }
            }

            setupToolbarState()

            return binding.root
        }

        private fun setupToolbarState() {
            setupToolbarStateListener(binding.motionLayout) { newState ->
                knowledgeViewModel.toolbarState = newState
                binding.motionLayout.handleToolbarState(newState)
            }

            binding.motionLayout.handleToolbarState(knowledgeViewModel.toolbarState)
        }
    }