wedroid/app/src/main/java/it/unisannio/ding/ids/wedroid/app/view/BoardsListsActivity.kt

package it.unisannio.ding.ids.wedroid.app.view

import android.content.Intent
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.ItemTouchHelper
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import it.unisannio.ding.ids.wedroid.app.R
import it.unisannio.ding.ids.wedroid.app.util.PreferenceReader
import it.unisannio.ding.ids.wedroid.app.util.SharedPreferenceHelper
import it.unisannio.ding.ids.wedroid.app.view.adapter.BoardsListAdapter
import it.unisannio.ding.ids.wedroid.app.viewModel.BoardsListViewModel
import it.unisannio.ding.ids.wedroid.wrapper.entity.BoardBackgroundColor

import kotlinx.android.synthetic.main.activity_boards_lists.*
import kotlinx.android.synthetic.main.content_boards_lists.*
import java.util.Locale

class BoardsListsActivity : AppCompatActivity() {
    private lateinit var viewModel: BoardsListViewModel

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_boards_lists)
        setSupportActionBar(toolbar)
        val reader: PreferenceReader = SharedPreferenceHelper(this)

        if (reader.token == "")
            startActivityForResult(
                Intent(this, LoginActivity::class.java),
                LOGIN_CODE
            )
        else initializeUi()
    }

    private fun initializeUi() {
        viewModel = ViewModelProvider(this).get(BoardsListViewModel::class.java)

        val adapter = BoardsListAdapter(this)
        boardList.adapter = adapter
        boardList.layoutManager = LinearLayoutManager(this)

        viewModel.allBoards.observe(this, Observer {
            it.let { adapter.setBoards(it) }
            pullToRefresh.isRefreshing = false
        })

        swipeLeftToDelete()

        fab.setOnClickListener {
            startActivityForResult(
                Intent(this, NewBoardActivity::class.java),
                NEW_BOARD_CODE
            )
        }

        pullToRefresh.setColorSchemeColors(getColor(R.color.colorAccent))
        pullToRefresh.setOnRefreshListener {
            viewModel.refresh()
        }
    }

    private fun swipeLeftToDelete() {
        val swipeToDelete = ItemTouchHelper(
            object : ItemTouchHelper.SimpleCallback(
                0, ItemTouchHelper.LEFT
            ) {
                override fun onMove(
                    recyclerView: RecyclerView,
                    viewHolder: RecyclerView.ViewHolder,
                    target: RecyclerView.ViewHolder
                ): Boolean {
                    return false
                }

                override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
                    val pos = viewHolder.adapterPosition
                    viewModel.deleteBoard(pos)
                }
            })

        swipeToDelete.attachToRecyclerView(boardList)
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        when (requestCode) {
            LOGIN_CODE -> onLoginResult(resultCode)
            NEW_BOARD_CODE -> if (data != null) onAddBoardResult(resultCode, data)
            else -> finish()
        }
    }

    private fun onLoginResult(resultCode: Int) {
        when (resultCode) {
            LoginActivity.LOGIN_OK -> initializeUi()
            LoginActivity.LOGIN_ERROR -> finish()
            else -> finish()
        }
    }

    private fun onAddBoardResult(resultCode: Int, data: Intent) {
        if (resultCode != NewBoardActivity.RESULT_OK) {
            Toast.makeText(this, R.string.on_add_new_board_error, Toast.LENGTH_LONG)
                .show()
            return
        }

        val title = data.getStringExtra(NewBoardActivity.BOARD_NAME)
        if (title == null) {
            Toast.makeText(this, R.string.on_null_new_board_name, Toast.LENGTH_LONG)
                .show()
            return
        }

        val isPrivate = data.getBooleanExtra(NewBoardActivity.BOARD_PRIVATE, true)

        val colorName = data.getStringExtra(NewBoardActivity.BOARD_BACKGROUND_COLOR) ?: "belize"
        val backgroundColor = BoardBackgroundColor
            .valueOf(colorName.toUpperCase(Locale.ROOT))

        viewModel.insertBoard(title, isPrivate, backgroundColor)
    }

    companion object {
        const val NEW_BOARD_CODE = 17
        const val LOGIN_CODE = 19
    }
}