/*
 * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
 * SPDX-License-Identifier: GPL-3.0-only
 */
package com.zeapo.pwdstore

import android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.lifecycle.observe
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.floatingactionbutton.FloatingActionButton
import com.zeapo.pwdstore.ui.adapters.PasswordItemRecyclerAdapter
import com.zeapo.pwdstore.utils.PasswordItem
import java.io.File
import me.zhanghai.android.fastscroll.FastScrollerBuilder

class SelectFolderFragment : Fragment() {
    private lateinit var recyclerAdapter: PasswordItemRecyclerAdapter
    private lateinit var recyclerView: RecyclerView
    private lateinit var listener: OnFragmentInteractionListener

    private val model: SearchableRepositoryViewModel by activityViewModels()

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val view = inflater.inflate(R.layout.password_recycler_view, container, false)
        initializePasswordList(view)
        val fab: FloatingActionButton = view.findViewById(R.id.fab)
        fab.hide()
        return view
    }

    private fun initializePasswordList(rootView: View) {
        recyclerAdapter = PasswordItemRecyclerAdapter()
            .onItemClicked { _, item ->
                listener.onFragmentInteraction(item)
            }
        recyclerView = rootView.findViewById(R.id.pass_recycler)
        recyclerView.apply {
            layoutManager = LinearLayoutManager(requireContext())
            itemAnimator = null
            adapter = recyclerAdapter
        }

        FastScrollerBuilder(recyclerView).build()
        registerForContextMenu(recyclerView)

        val path = requireNotNull(requireArguments().getString(PasswordStore.REQUEST_ARG_PATH))
        model.navigateTo(File(path), listMode = ListMode.DirectoriesOnly, pushPreviousLocation = false)
        model.searchResult.observe(viewLifecycleOwner) { result ->
            recyclerAdapter.submitList(result.passwordItems)
        }
    }

    override fun onAttach(context: Context) {
        super.onAttach(context)
        try {
            listener = object : OnFragmentInteractionListener {
                override fun onFragmentInteraction(item: PasswordItem) {
                    if (item.type == PasswordItem.TYPE_CATEGORY) {
                        model.navigateTo(item.file, listMode = ListMode.DirectoriesOnly)
                        (requireActivity() as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(true)
                    }
                }
            }
        } catch (e: ClassCastException) {
            throw ClassCastException(
                    "$context must implement OnFragmentInteractionListener")
        }
    }

    val currentDir: File
        get() = model.currentDir.value!!

    interface OnFragmentInteractionListener {
        fun onFragmentInteraction(item: PasswordItem)
    }
}