package code.name.monkey.retromusic.fragments.albums

import android.os.Bundle
import android.view.*
import androidx.core.os.bundleOf
import androidx.lifecycle.Observer
import androidx.navigation.fragment.FragmentNavigatorExtras
import androidx.recyclerview.widget.GridLayoutManager
import code.name.monkey.retromusic.EXTRA_ALBUM_ID
import code.name.monkey.retromusic.R
import code.name.monkey.retromusic.adapter.album.AlbumAdapter
import code.name.monkey.retromusic.extensions.findActivityNavController
import code.name.monkey.retromusic.fragments.ReloadType
import code.name.monkey.retromusic.fragments.base.AbsRecyclerViewCustomGridSizeFragment
import code.name.monkey.retromusic.helper.SortOrder
import code.name.monkey.retromusic.helper.SortOrder.AlbumSortOrder
import code.name.monkey.retromusic.util.PreferenceUtil
import code.name.monkey.retromusic.util.RetroUtil


class AlbumsFragment : AbsRecyclerViewCustomGridSizeFragment<AlbumAdapter, GridLayoutManager>(),
    AlbumClickListener {

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        libraryViewModel.getAlbums().observe(viewLifecycleOwner, Observer {
            if (it.isNotEmpty())
                adapter?.swapDataSet(it)
            else
                adapter?.swapDataSet(listOf())
        })
    }

    override val emptyMessage: Int
        get() = R.string.no_albums

    override fun createLayoutManager(): GridLayoutManager {
        return GridLayoutManager(requireActivity(), getGridSize())
    }

    override fun createAdapter(): AlbumAdapter {
        val dataSet = if (adapter == null) ArrayList() else adapter!!.dataSet
        return AlbumAdapter(
            requireActivity(),
            dataSet,
            R.layout.item_grid,
            null,
            this
        )
    }

    override fun setGridSize(gridSize: Int) {
        layoutManager?.spanCount = gridSize
        adapter?.notifyDataSetChanged()
    }

    override fun loadSortOrder(): String {
        return PreferenceUtil.albumSortOrder
    }

    override fun saveSortOrder(sortOrder: String) {
        PreferenceUtil.albumSortOrder = sortOrder
    }

    override fun loadGridSize(): Int {
        return PreferenceUtil.albumGridSize
    }

    override fun saveGridSize(gridColumns: Int) {
        PreferenceUtil.albumGridSize = gridColumns
    }

    override fun loadGridSizeLand(): Int {
        return PreferenceUtil.albumGridSizeLand
    }

    override fun saveGridSizeLand(gridColumns: Int) {
        PreferenceUtil.albumGridSizeLand = gridColumns
    }

    override fun setSortOrder(sortOrder: String) {
        libraryViewModel.forceReload(ReloadType.Albums)
    }

    override fun loadLayoutRes(): Int {
        return PreferenceUtil.albumGridStyle
    }

    override fun saveLayoutRes(layoutRes: Int) {
        PreferenceUtil.albumGridStyle = layoutRes
    }


    companion object {
        fun newInstance(): AlbumsFragment {
            return AlbumsFragment()
        }
    }

    override fun onAlbumClick(albumId: Int, view: View) {
        findActivityNavController(R.id.fragment_container).navigate(
            R.id.albumDetailsFragment,
            bundleOf(EXTRA_ALBUM_ID to albumId),
            null,
            FragmentNavigatorExtras(
                view to getString(R.string.transition_album_art)
            )
        )
    }

    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
        val gridSizeItem: MenuItem = menu.findItem(R.id.action_grid_size)
        if (RetroUtil.isLandscape()) {
            gridSizeItem.setTitle(R.string.action_grid_size_land)
        }
        setUpGridSizeMenu(gridSizeItem.subMenu)
        val layoutItem = menu.findItem(R.id.action_layout_type)
        setupLayoutMenu(layoutItem.subMenu)
        setUpSortOrderMenu(menu.findItem(R.id.action_sort_order).subMenu)
        super.onCreateOptionsMenu(menu, inflater)
    }

    private fun setUpSortOrderMenu(
        sortOrderMenu: SubMenu
    ) {
        val currentSortOrder: String? = getSortOrder()
        sortOrderMenu.clear()
        sortOrderMenu.add(
            0,
            R.id.action_album_sort_order_asc,
            0,
            R.string.sort_order_a_z
        ).isChecked =
            currentSortOrder.equals(SortOrder.AlbumSortOrder.ALBUM_A_Z)
        sortOrderMenu.add(
            0,
            R.id.action_album_sort_order_desc,
            1,
            R.string.sort_order_z_a
        ).isChecked =
            currentSortOrder.equals(SortOrder.AlbumSortOrder.ALBUM_Z_A)
        sortOrderMenu.add(
            0,
            R.id.action_album_sort_order_artist,
            2,
            R.string.sort_order_artist
        ).isChecked =
            currentSortOrder.equals(SortOrder.AlbumSortOrder.ALBUM_ARTIST)
        sortOrderMenu.add(
            0,
            R.id.action_album_sort_order_year,
            3,
            R.string.sort_order_year
        ).isChecked =
            currentSortOrder.equals(SortOrder.AlbumSortOrder.ALBUM_YEAR)

        sortOrderMenu.setGroupCheckable(0, true, true)
    }

    private fun setupLayoutMenu(
        subMenu: SubMenu
    ) {
        when (itemLayoutRes()) {
            R.layout.item_card -> subMenu.findItem(R.id.action_layout_card).isChecked = true
            R.layout.item_grid -> subMenu.findItem(R.id.action_layout_normal).isChecked = true
            R.layout.item_card_color ->
                subMenu.findItem(R.id.action_layout_colored_card).isChecked = true
            R.layout.item_grid_circle ->
                subMenu.findItem(R.id.action_layout_circular).isChecked = true
            R.layout.image -> subMenu.findItem(R.id.action_layout_image).isChecked = true
            R.layout.item_image_gradient ->
                subMenu.findItem(R.id.action_layout_gradient_image).isChecked = true
        }
    }

    private fun setUpGridSizeMenu(
        gridSizeMenu: SubMenu
    ) {
        when (getGridSize()) {
            1 -> gridSizeMenu.findItem(R.id.action_grid_size_1).isChecked =
                true
            2 -> gridSizeMenu.findItem(R.id.action_grid_size_2).isChecked = true
            3 -> gridSizeMenu.findItem(R.id.action_grid_size_3).isChecked = true
            4 -> gridSizeMenu.findItem(R.id.action_grid_size_4).isChecked = true
            5 -> gridSizeMenu.findItem(R.id.action_grid_size_5).isChecked = true
            6 -> gridSizeMenu.findItem(R.id.action_grid_size_6).isChecked = true
            7 -> gridSizeMenu.findItem(R.id.action_grid_size_7).isChecked = true
            8 -> gridSizeMenu.findItem(R.id.action_grid_size_8).isChecked = true
        }
        val gridSize: Int = maxGridSize
        if (gridSize < 8) {
            gridSizeMenu.findItem(R.id.action_grid_size_8).isVisible = false
        }
        if (gridSize < 7) {
            gridSizeMenu.findItem(R.id.action_grid_size_7).isVisible = false
        }
        if (gridSize < 6) {
            gridSizeMenu.findItem(R.id.action_grid_size_6).isVisible = false
        }
        if (gridSize < 5) {
            gridSizeMenu.findItem(R.id.action_grid_size_5).isVisible = false
        }
        if (gridSize < 4) {
            gridSizeMenu.findItem(R.id.action_grid_size_4).isVisible = false
        }
        if (gridSize < 3) {
            gridSizeMenu.findItem(R.id.action_grid_size_3).isVisible = false
        }
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        if (handleGridSizeMenuItem(item)) {
            return true
        }
        if (handleLayoutResType(item)) {
            return true
        }
        if (handleSortOrderMenuItem(item)) {
            return true
        }
        return super.onOptionsItemSelected(item)
    }

    private fun handleSortOrderMenuItem(
        item: MenuItem
    ): Boolean {
        var sortOrder: String? = null

        when (item.itemId) {
            R.id.action_album_sort_order_asc -> sortOrder = AlbumSortOrder.ALBUM_A_Z
            R.id.action_album_sort_order_desc -> sortOrder = AlbumSortOrder.ALBUM_Z_A
            R.id.action_album_sort_order_artist -> sortOrder = AlbumSortOrder.ALBUM_ARTIST
            R.id.action_album_sort_order_year -> sortOrder = AlbumSortOrder.ALBUM_YEAR
        }
        if (sortOrder != null) {
            item.isChecked = true
            setAndSaveSortOrder(sortOrder)
            return true
        }
        return false
    }

    private fun handleLayoutResType(
        item: MenuItem
    ): Boolean {
        var layoutRes = -1
        when (item.itemId) {
            R.id.action_layout_normal -> layoutRes = R.layout.item_grid
            R.id.action_layout_card -> layoutRes = R.layout.item_card
            R.id.action_layout_colored_card -> layoutRes = R.layout.item_card_color
            R.id.action_layout_circular -> layoutRes = R.layout.item_grid_circle
            R.id.action_layout_image -> layoutRes = R.layout.image
            R.id.action_layout_gradient_image -> layoutRes = R.layout.item_image_gradient
        }
        if (layoutRes != -1) {
            item.isChecked = true
            setAndSaveLayoutRes(layoutRes)
            return true
        }
        return false
    }

    private fun handleGridSizeMenuItem(
        item: MenuItem
    ): Boolean {
        var gridSize = 0
        when (item.itemId) {
            R.id.action_grid_size_1 -> gridSize = 1
            R.id.action_grid_size_2 -> gridSize = 2
            R.id.action_grid_size_3 -> gridSize = 3
            R.id.action_grid_size_4 -> gridSize = 4
            R.id.action_grid_size_5 -> gridSize = 5
            R.id.action_grid_size_6 -> gridSize = 6
            R.id.action_grid_size_7 -> gridSize = 7
            R.id.action_grid_size_8 -> gridSize = 8
        }
        if (gridSize > 0) {
            item.isChecked = true
            setAndSaveGridSize(gridSize)
            return true
        }
        return false
    }

}

interface AlbumClickListener {
    fun onAlbumClick(albumId: Int, view: View)
}