PlayerAndroid/app/src/main/java/code/name/monkey/retromusic/adapter/base/AbsMultiSelectAdapter.kt

package code.name.monkey.retromusic.adapter.base

import android.annotation.SuppressLint
import android.graphics.Color
import android.view.Menu
import android.view.MenuItem
import androidx.annotation.MenuRes
import androidx.fragment.app.FragmentActivity
import androidx.recyclerview.widget.RecyclerView
import code.name.monkey.appthemehelper.util.ATHUtil
import code.name.monkey.retromusic.R
import code.name.monkey.retromusic.interfaces.ICabCallback
import code.name.monkey.retromusic.interfaces.ICabHolder
import code.name.monkey.retromusic.util.RetroColorUtil
import com.afollestad.materialcab.attached.AttachedCab
import com.afollestad.materialcab.attached.destroy
import com.afollestad.materialcab.attached.isActive
import java.util.*

abstract class AbsMultiSelectAdapter<V : RecyclerView.ViewHolder?, I>(
    open val activity: FragmentActivity, private val ICabHolder: ICabHolder?, @MenuRes menuRes: Int
) : RecyclerView.Adapter<V>(), ICabCallback {
    private var cab: AttachedCab? = null
    private val checked: MutableList<I>
    private var menuRes: Int
    override fun onCabCreated(cab: AttachedCab, menu: Menu): Boolean {
        activity.window.statusBarColor =
            RetroColorUtil.shiftBackgroundColor(ATHUtil.resolveColor(activity, R.attr.colorSurface))
        return true
    }

    override fun onCabFinished(cab: AttachedCab): Boolean {
        clearChecked()
        activity.window.statusBarColor = Color.TRANSPARENT
        return true
    }

    override fun onCabItemClicked(item: MenuItem): Boolean {
        if (item.itemId == R.id.action_multi_select_adapter_check_all) {
            checkAll()
        } else {
            onMultipleItemAction(item, ArrayList(checked))
            cab?.destroy()
            clearChecked()
        }
        return true
    }

    private fun checkAll() {
        if (ICabHolder != null) {
            checked.clear()
            for (i in 0 until itemCount) {
                val identifier = getIdentifier(i)
                if (identifier != null) {
                    checked.add(identifier)
                }
            }
            notifyDataSetChanged()
            updateCab()
        }
    }

    protected abstract fun getIdentifier(position: Int): I?
    protected open fun getName(i: I): String? {
        return i.toString()
    }

    protected fun isChecked(identifier: I): Boolean {
        return checked.contains(identifier)
    }

    protected val isInQuickSelectMode: Boolean
        get() = cab != null && cab!!.isActive()

    protected abstract fun onMultipleItemAction(menuItem: MenuItem, selection: List<I>)
    protected fun setMultiSelectMenuRes(@MenuRes menuRes: Int) {
        this.menuRes = menuRes
    }

    protected fun toggleChecked(position: Int): Boolean {
        if (ICabHolder != null) {
            val identifier = getIdentifier(position) ?: return false
            if (!checked.remove(identifier)) {
                checked.add(identifier)
            }
            notifyItemChanged(position)
            updateCab()
            return true
        }
        return false
    }

    private fun clearChecked() {
        checked.clear()
        notifyDataSetChanged()
    }

    @SuppressLint("StringFormatInvalid", "StringFormatMatches")
    private fun updateCab() {
        if (ICabHolder != null) {
            if (cab == null || !cab!!.isActive()) {
                cab = ICabHolder.openCab(menuRes, this)
            }
            val size = checked.size
            when {
                size <= 0 -> {
                    cab?.destroy()
                }
                size == 1 -> {
                    cab?.title(literal = getName(checked[0]))
                }
                else -> {
                    cab?.title(literal = activity.getString(R.string.x_selected, size))
                }
            }
        }
    }

    init {
        checked = ArrayList()
        this.menuRes = menuRes
    }
}