package com.xw.common.base

import android.annotation.SuppressLint
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.RecyclerView
import com.xw.common.R
import com.xw.common.databinding.CommonItemImageAddBinding
import com.xw.common.databinding.CommonItemImageEmptyBinding
import com.xw.common.databinding.CommonItemImageShowBinding

class ImageSelectAdapter(
    var context: Context,
    var maxSize: Int,
    isEdit: Int = 1, // 是否可编辑 1：可编辑 else：仅查看
    var listener: ImageEventListener<FileSelectBean>
) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

    var isEdit: Int = isEdit
        @SuppressLint("NotifyDataSetChanged")
        set(value) {
            field = value
            notifyDataSetChanged()
        }

    fun remove(data: FileSelectBean) {
        val index = this.data.indexOf(data)
        if (index == -1) {
            return
        }
        this.data.removeAt(index)
        notifyItemRemoved(index)
        notifyItemRangeChanged(index, this.data.size - index)
    }

    @SuppressLint("NotifyDataSetChanged")
    fun setList(list: Collection<FileSelectBean>?) {
        if (list !== this.data) {
            this.data.clear()
            if (!list.isNullOrEmpty()) {
                this.data.addAll(list)
            }
        } else {
            if (!list.isEmpty()) {
                val newList = ArrayList(list)
                this.data.clear()
                this.data.addAll(newList)
            } else {
                this.data.clear()
            }
        }
        notifyDataSetChanged()
    }

    var data: MutableList<FileSelectBean> = ArrayList()

    private val TYPE_ITEM = 1
    private val TYPE_EMPTY = 2
    private val TYPE_ADD = 3

    private val inflater by lazy { LayoutInflater.from(context) }

    override fun getItemCount(): Int {
        return if (isEdit == 1) {
            if (data.size >= maxSize) maxSize else data.size + 1
        } else {
            if (data.isEmpty()) 1 else data.size // 没有图片加载一个null的站位图
        }
    }

    override fun getItemViewType(position: Int): Int {
        return if (isEdit == 1) {
            if (data.size == maxSize) {
                TYPE_ITEM
            } else {
                if (position + 1 == itemCount) {
                    TYPE_ADD
                } else {
                    TYPE_ITEM
                }
            }
        } else {
            if (data.isEmpty()) TYPE_EMPTY else TYPE_ITEM
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        val binding = if (viewType == TYPE_ITEM) {
            DataBindingUtil.inflate<ViewDataBinding>(
                inflater,
                R.layout.common_item_image_show,
                parent,
                false
            )
        } else if (viewType == TYPE_EMPTY) {
            DataBindingUtil.inflate<ViewDataBinding>(
                inflater,
                R.layout.common_item_image_empty,
                parent,
                false
            )
        } else {
            DataBindingUtil.inflate(
                inflater,
                R.layout.common_item_image_add,
                parent,
                false
            )
        }
        return ViewHolder(binding.root, binding)
    }


    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        (holder as ViewHolder).bindData(position)
    }

    inner class ViewHolder(itemView: View, var mBinding: ViewDataBinding) : RecyclerView.ViewHolder(itemView) {

        fun bindData(position: Int) {

            if (mBinding is CommonItemImageShowBinding) {
                val item = data[position]
                val binding: CommonItemImageShowBinding = mBinding as CommonItemImageShowBinding
                binding.listener = listener
                binding.item = item
                binding.delete.visibility = if (isEdit == 1) View.VISIBLE else View.GONE
                binding.ivPlay.visibility = if (item.type == "video") View.VISIBLE else View.GONE
            } else if (mBinding is CommonItemImageAddBinding) {
                val item = FileSelectBean()
                val binding: CommonItemImageAddBinding = mBinding as CommonItemImageAddBinding
                binding.listener = listener
                binding.item = item
            }
        }
    }
}

data class FileSelectBean(
    var url: String = "",
    var localPath: String = "",
    var type: String = "", // video  ic_notice  audio
    var placeholder: Int = R.mipmap.icon_default5,
    var error: Int = R.mipmap.icon_default5,
){
    override fun toString(): String {
        return "FileSelectBean(url='$url', localPath='$localPath', type='$type')"
    }
}