package com.xw.common.base

import android.app.Dialog
import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.Drawable
import android.view.Gravity
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.fragment.app.FragmentActivity
import androidx.viewpager.widget.PagerAdapter
import com.blankj.utilcode.util.ToastUtils
import com.bumptech.glide.Glide
import com.bumptech.glide.load.DataSource
import com.bumptech.glide.load.DecodeFormat
import com.bumptech.glide.load.engine.GlideException
import com.bumptech.glide.request.RequestListener
import com.bumptech.glide.request.target.Target
import com.xw.common.R
import com.xw.common.databinding.WindowShowBigpicBinding
import com.xw.common.databinding.WindowShowImgListBinding
import com.xw.common.utils.ToolUtil

class ShowImgListDialog(var activity: FragmentActivity, var imgUrlList: List<String?>, currentPosition: Int) :
    Dialog(activity, R.style.LoadingDialog) {

    var bind: WindowShowImgListBinding =
        DataBindingUtil.inflate(LayoutInflater.from(activity), R.layout.window_show_img_list, null, false)

    private var pageAdapter: ViewPagerAdapter? = null

    init {
        setContentView(bind.root)

        window!!.attributes.gravity = Gravity.BOTTOM
        //设置dialog的 进出 动画
        window!!.setWindowAnimations(R.style.AnimUp)
        // 实例化一个ColorDrawable颜色为半透明
        // 设置SelectPicPopupWindow弹出窗体的背景
        window!!.setBackgroundDrawable(ColorDrawable(0x00000000))
        window!!.attributes.width = ViewGroup.LayoutParams.MATCH_PARENT
        window!!.attributes.height = ViewGroup.LayoutParams.MATCH_PARENT

        pageAdapter = ViewPagerAdapter()
        bind.viewPager.adapter = pageAdapter
        bind.viewPager.currentItem = currentPosition

        setOnDismissListener {
            ToolUtil.fullscreen(activity, false)
        }
    }

    override fun show() {
        ToolUtil.fullscreen(activity, true)
        super.show()
    }

    //viewpager适配器
    inner class ViewPagerAdapter : PagerAdapter() {
        override fun getCount(): Int {
            return imgUrlList.size
        }

        override fun isViewFromObject(view: View, `object`: Any): Boolean {
            return view === `object`
        }

        override fun instantiateItem(container: ViewGroup, position: Int): Any {
            val showBigpicBinding: WindowShowBigpicBinding =
                DataBindingUtil.inflate(LayoutInflater.from(activity), R.layout.window_show_bigpic, null, false)

            // 大图url
            val msgImgBigUrl: String? = imgUrlList[position]
            loadImg(showBigpicBinding, msgImgBigUrl)
            container.addView(showBigpicBinding.root)
            return showBigpicBinding.root
        }

        override fun destroyItem(container: ViewGroup, position: Int, `object`: Any) {
            container.removeView(`object` as View)
        }
    }

    private fun loadImg(showBigpicBinding: WindowShowBigpicBinding?, httpUrl: String?) {
        if (showBigpicBinding == null) {
            return
        }
        showBigpicBinding.windowShowPicImg.setOnOutsidePhotoTapListener {
            dismiss()
        }
        showBigpicBinding.windowShowPicImg.setOnPhotoTapListener { _, _, _ ->
            dismiss()
        }
        if (!httpUrl.isNullOrEmpty()) {
            Glide.with(activity).load(httpUrl).listener(object : RequestListener<Drawable?> {
                override fun onLoadFailed(
                    e: GlideException?,
                    model: Any,
                    target: Target<Drawable?>,
                    isFirstResource: Boolean
                ): Boolean {
                    //加载图片出错
                    showBigpicBinding.windowShowPicPb.setVisibility(View.GONE)
                    ToastUtils.showLong("图片加载失败")
                    if (imgUrlList.size == 1) {
                       dismiss()
                    }
                    return false
                }

                override fun onResourceReady(
                    resource: Drawable?,
                    model: Any,
                    target: Target<Drawable?>,
                    dataSource: DataSource,
                    isFirstResource: Boolean
                ): Boolean {
                    //加载图片成功
                    showBigpicBinding.windowShowPicPb.setVisibility(View.GONE)
                    return false
                }
            }).format(DecodeFormat.PREFER_RGB_565).into(showBigpicBinding.windowShowPicImg)
        } else {
            showBigpicBinding.windowShowPicPb.setVisibility(View.GONE)
            showBigpicBinding.windowShowPicImg.setImageResource(R.drawable.ps_image_placeholder)
        }
    }

}