package com.krungsri.uchoose.digitallending.product.list.presenter

import android.content.Context
import android.os.Parcelable
import android.util.AttributeSet
import android.util.SparseArray
import android.view.animation.AnimationUtils
import android.widget.LinearLayout
import com.krungsri.uchoose.R
import kotlinx.android.parcel.Parcelize
import kotlinx.android.synthetic.main.view_product_list.view.*
import kotlinx.android.synthetic.main.view_section_product_header.view.*


class EntityProductView @JvmOverloads constructor(
        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : LinearLayout(context, attrs, defStyleAttr) {
    private var entityName = ""
    private var entityDescription = ""
    var onExpand: () -> Unit = {}
    var onClickDetail: (Int) -> Unit = {}
        set(value) {
            field = value
            productListView.onClickDetail = value
        }

    var onClickApply: (Int) -> Unit = {}
        set(value) {
            field = value
            productListView.onClickApply = value
        }

    init {
        inflate(context, R.layout.view_product_list, this)
        setLayout(attrs)
        setHeader()
        productHeaderView.setOnClickListener {
            toggle()
        }
    }

    private fun setHeader() {
        productHeaderView.entityName.text = entityName
        productHeaderView.entityDescription.text = entityDescription
    }

    private fun setLayout(attrs: AttributeSet?) {
        val attributes = context.obtainStyledAttributes(attrs, R.styleable.EntityProductView)
        val entityIcon = attributes.getDrawable(R.styleable.EntityProductView_entityIcon)
        entityIcon?.let(productHeaderView.entityIcon::setImageDrawable)
        entityName = attributes.getString(R.styleable.EntityProductView_entityName) ?: ""
        entityDescription = attributes.getString(R.styleable.EntityProductView_entityDescription)
                ?: ""
        attributes.recycle()
    }

    fun expand() {
        onExpand.invoke()
        expandableForProductListLayout.expand()
        toggleArrowIcon()
    }

    fun collapse(animate: Boolean = true) {
        expandableForProductListLayout.collapse(animate)
        toggleArrowIcon()
    }

    private fun toggle() {
        if (expandableForProductListLayout.isExpanded) {
            collapse()
        } else {
            expand()
        }
    }

    private fun toggleArrowIcon() {
        if (expandableForProductListLayout.isExpanded) {
            val expand = AnimationUtils.loadAnimation(context, R.anim.expand_list)
            arrowIcon.startAnimation(expand)
        } else {
            val collapse = AnimationUtils.loadAnimation(context,
                    R.anim.collapse_list)
            arrowIcon.startAnimation(collapse)
        }
    }

    override fun onSaveInstanceState(): Parcelable? {
        val instanceState = InstanceState(superState = super.onSaveInstanceState())
        expandableForProductListLayout.saveHierarchyState(instanceState.childrenState)
        return instanceState
    }

    override fun dispatchSaveInstanceState(container: SparseArray<Parcelable>?) {
        dispatchFreezeSelfOnly(container)
    }

    override fun dispatchRestoreInstanceState(container: SparseArray<Parcelable>?) {
        dispatchThawSelfOnly(container)
    }

    override fun onRestoreInstanceState(state: Parcelable?) {
        (state as? InstanceState)?.let {
            super.onRestoreInstanceState(it.superState)
            expandableForProductListLayout.restoreHierarchyState(it.childrenState)
        }
        toggleArrowIcon()
    }

    @Parcelize
    private class InstanceState(val childrenState: SparseArray<Parcelable> = SparseArray(),
                                val superState: Parcelable?) : Parcelable
}