package me.sargunvohra.android.pokesource.app.gridlist

import android.os.Bundle
import android.support.design.widget.Snackbar
import android.support.v4.content.ContextCompat
import android.support.v7.widget.GridLayoutManager
import android.support.v7.widget.RecyclerView
import android.view.*
import android.widget.ImageView
import android.widget.ProgressBar
import com.bumptech.glide.Glide
import com.github.nitrico.lastadapter.LastAdapter
import com.github.salomonbrys.kodein.instance
import me.sargunvohra.android.pokesource.app.BR
import me.sargunvohra.android.pokesource.app.R
import me.sargunvohra.android.pokesource.app.exception.ErrorMessageFactory
import me.sargunvohra.android.pokesource.app.navigation.Navigator
import me.sargunvohra.skaffold.base.BaseFragment

abstract class GridListFragment : GridListContract.View, BaseFragment<GridListFragment, GridListPresenter>() {

    val errorMessageFactory: ErrorMessageFactory by injector.instance()

    val navigator: Navigator by injector.instance()

    val contentView: RecyclerView by binder.bind(R.id.contentView)

    val loadingView: ProgressBar by binder.bind(R.id.loadingView)

    val rootView: View by binder.bind(R.id.rootView)

    val content = mutableListOf<GridListItem>()

    var errorSnackbar: Snackbar? = null

    override val layout = R.layout.fragment_grid_list

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        val view = super.onCreateView(inflater, container, savedInstanceState)
        contentView.layoutManager = GridLayoutManager(context, 3)
        LastAdapter.with(content, BR.item)
                .map<GridListItem>(R.layout.fragment_grid_list_item)
                .onBind { bindListItem() }
                .onClick { presenter.onPressedItem(position) }
                .into(contentView)
        return view
    }

    private fun LastAdapter.ItemViewPosition.bindListItem() {
        val imageView = view.findViewById(R.id.iconImage) as ImageView
        val content = item as GridListItem
        if (content.imageUrl == null) {
            imageView.setImageResource(content.imageRes)
        } else {
            Glide.with(context).load(content.imageUrl).into(imageView)
        }
    }

    override fun navigateToGridList(type: GridListType) = navigator.navigateToGridList(context, type)

    override fun showLoading() {
        hideContent()
        hideError()
        loadingView.visibility = View.VISIBLE
    }

    override fun hideLoading() {
        loadingView.visibility = View.GONE
    }

    override fun showContent(newContent: List<GridListItem>) {
        hideLoading()
        hideError()
        content.clear()
        content.addAll(newContent)
        contentView.adapter.notifyDataSetChanged()
        contentView.visibility = View.VISIBLE
    }

    override fun hideContent() {
        contentView.visibility = View.GONE
    }

    override fun showError(error: Throwable) {
        val message = errorMessageFactory.create(context, error)
        val snackbar = Snackbar.make(rootView, message, Snackbar.LENGTH_INDEFINITE)
        snackbar.view.setBackgroundColor(ContextCompat.getColor(context, R.color.errorSnackBar))
        snackbar.setAction(R.string.retry) {
            hideError()
            presenter.onPressedRetry()
        }
        snackbar.setActionTextColor(ContextCompat.getColor(context, R.color.snackbarActionText))
        snackbar.show()
        errorSnackbar = snackbar
    }

    override fun hideError() {
        errorSnackbar?.dismiss()
        errorSnackbar = null
    }
}