import Dialog from 'android.app.Dialog';
import Activity from 'android.app.Activity';
import Gravity from 'android.view.Gravity';

import ViewGroup from 'android.view.ViewGroup';
import View from 'android.view.View';
import Color from 'android.graphics.Color';

import R from 'io.dcloud.uts.prompt.R';
import TextView from 'android.widget.TextView';
import LayoutInflater from 'android.view.LayoutInflater';

import AppCompatTextView from 'androidx.appcompat.widget.AppCompatTextView';
import LinearLayoutCompat from 'androidx.appcompat.widget.LinearLayoutCompat';

import LinearLayoutManager from 'androidx.recyclerview.widget.LinearLayoutManager';
import RecyclerView from 'androidx.recyclerview.widget.RecyclerView';
import WindowManager from 'android.view.WindowManager';

import { ShowActionSheetOptions, ShowActionSheetSuccess} from '../interface.uts'

// #ifdef UNI-APP-X
import getCurrentPages from 'io.dcloud.uniapp.framework.getCurrentPages';
import onReady from 'io.dcloud.uniapp.framework.onReady';
import onUnload from 'io.dcloud.uniapp.framework.onUnload';
// #endif


let uniActionSheet:UniActionSheet|null = null

/**
 * 弹出功能入口
 */
export function actionSheetImpl(style: ShowActionSheetOptions) {
	
	/**
	 * 参数校验，itemList 不能为空
	 */
	if(style.itemList == null || style.itemList.length < 1){

		let res = new UniError("uni-prompt",-1,"showActionSheet:fail parameter error: parameter.itemList should have at least 1 item");
		
		style.fail?.(res)
		style.complete?.(res)
		return ;
	}
	
	
	/**
	 * 元素个数不能超过6个
	 */
	if(style.itemList.size > 6){
		let res = new UniError("uni-prompt",-2,"showActionSheet:fail parameter error: itemList should not be large than 6");
		
		style.fail?.(res)
		style.complete?.(res)
		return ;
	}
	
	
	if(uniActionSheet != null){
		uniActionSheet?.dismiss()
		uniActionSheet = null
	}
	
	
	// #ifndef UNI-APP-X
		/**
		 * uni-app
		 */
		if(UTSAndroid.getTopPageActivity() == null){
			return 
		}
		if(UTSAndroid.getTopPageActivity()!.isFinishing()){
			return 
		}
		uniActionSheet = new UniActionSheet(UTSAndroid.getTopPageActivity()!, style)
		uniActionSheet?.show()
		UTSAndroid.onAppActivityDestroy(function(){
			uniActionSheet?.dismiss()
			uniActionSheet = null
		})
		
	// #endif
	// #ifdef UNI-APP-X
		/**
		 * uni-app x
		 * 需要特殊处理生命周期 
		 */
		const pages = getCurrentPages();
		if (pages.length > 0) {
		    const page = pages[pages.length - 1]
		    const instance = page.$
		    if (page.$isReady) {
				if(UTSAndroid.getTopPageActivity() == null){
					return 
				}
				if(UTSAndroid.getTopPageActivity()!.isFinishing()){
					return 
				}
				uniActionSheet = new UniActionSheet(UTSAndroid.getTopPageActivity()!, style)
		        uniActionSheet?.show()
		    } else {
		        onReady(() => {
					if(UTSAndroid.getTopPageActivity() == null){
						return 
					}
					if(UTSAndroid.getTopPageActivity()!.isFinishing()){
						return 
					}
					uniActionSheet = new UniActionSheet(UTSAndroid.getTopPageActivity()!, style)
		            uniActionSheet?.show()
		        }, instance)
		    }
		    
			onUnload(() => {
				uniActionSheet?.dismiss()
				uniActionSheet = null
			}, instance)
			
		}
	// #endif
	
	
}


/**
 * UniActionSheet 
 * 功能实现
 */
export class UniActionSheet extends Dialog{
	
	/**
	 * 宿主activity
	 */
	hostActivity: Activity
	/**
	 * 宿主样式
	 */
	hostStyle:ShowActionSheetOptions
	/**
	 * 标题组件
	 */
	title: AppCompatTextView
	/**
	 * 取消按钮
	 */
	cancel: AppCompatTextView
	/**
	 * 列表 recycler 
	 */
	myRecyclerView: RecyclerView
	
	/**
	 * title 组件
	 */
	lineTitle: LinearLayoutCompat
	/**
	 * 内容组件
	 */
	lineContent: LinearLayoutCompat
	/**
	 * 取消组件
	 */
	lineCancel: LinearLayoutCompat


	override dismiss():void {
		let res = new UniError("uni-prompt",1002,"showActionSheet:fail cancel");
		this.hostStyle.fail?.(res)
		this.hostStyle.fail = null
		// 为了确保complete只调用一次，执行后手动置空
		this.hostStyle.complete?.(res)
		this.hostStyle.complete = null
		
		super.dismiss()
	}
	
	
	constructor(activity: Activity, style: ShowActionSheetOptions) {
		
		super(activity,R.style.uni_prompt_ActionsheetDialog);
		
		this.hostActivity = activity
		this.hostStyle = style
		
		/**
		 * 适配暗黑模式，配置不同的布局文件
		 */
		if(UTSAndroid.getAppDarkMode()){
			setContentView(R.layout.uni_prompt_uts_action_sheet_night)
		}else{
			setContentView(R.layout.uni_prompt_uts_action_sheet)
		}
		
		
		this.title = findViewById(R.id.tvTitle)
		this.cancel = findViewById(R.id.tvCancelAction)
		this.lineTitle = findViewById(R.id.line_title)
		this.lineContent = findViewById(R.id.line_content)
		this.lineCancel = findViewById(R.id.line_cancel)
		this.myRecyclerView = findViewById(R.id.myRecyclerview)
		this.myRecyclerView.layoutManager = LinearLayoutManager(this.hostActivity)
		
		
		this.cancel.setOnClickListener(new CancelClickListener(this,this.hostStyle));
		let recyclerviewAdapter = new ItemAdapter(this,this.hostStyle)
		this.myRecyclerView.adapter = recyclerviewAdapter
		
		if(!style.title.isNullOrBlank()){
			this.lineTitle.setVisibility(View.VISIBLE)
			this.title.setText(style.title)
		}
		
		if(this.window != null){
			this.window!.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT)
			this.window!.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM);
			if(this.window!.attributes != null){
				this.window!.attributes!.windowAnimations = R.style.uni_prompt_DialogAnimations_slideWindow;
			}
		}
		
	}
	

}

/**
 * 列表选项点击事件监听
 */
class ItemClickListener extends View.OnClickListener{
	
	host:Dialog
	hostStyle:ShowActionSheetOptions
	hostIndex:number
	
	constructor(dialog:Dialog,style: ShowActionSheetOptions,index:number){
		super()
		this.host = dialog
		this.hostStyle = style
		this.hostIndex = index
	}
	
    override onClick(v?: View):void{
		
		const res : ShowActionSheetSuccess = {
			tapIndex: this.hostIndex
		}
		
		this.hostStyle.success?.(res)
		this.hostStyle.success = null
		this.hostStyle.complete?.(res)
		this.hostStyle.complete = null
		// 点击触发成功后，去掉fail
		this.hostStyle.fail = null
		this.host.dismiss()
		
    }
}

/**
 * 取消按钮点击事件
 */
class CancelClickListener extends View.OnClickListener{
	
	host:Dialog
	hostStyle:ShowActionSheetOptions
	
	constructor(dialog:Dialog,style: ShowActionSheetOptions){
		super()
		this.host = dialog
		this.hostStyle = style
	}
	
    override onClick(v?: View):void{
		
		let res = new UniError("uni-prompt",1002,"showActionSheet:fail cancel");
		
		this.hostStyle.fail?.(res)
		this.hostStyle.fail = null
		this.hostStyle.complete?.(res)
		this.hostStyle.complete = null
		this.host.dismiss()
		
    }
}


/**
 * 列表数据适配器
 */
class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder>{
	
	
	mItemList: Array<String>
	hostStyle:ShowActionSheetOptions
	hostDialog:Dialog
	
	constructor(dialog:Dialog ,style: ShowActionSheetOptions){
		super()
		this.hostDialog = dialog
		this.mItemList = style.itemList
		this.hostStyle = style
	}
	
	/**
	 * view 持有容器
	 */
	ViewHolder = class extends RecyclerView.ViewHolder {
		
		itemName:TextView;
		constructor(view:View) {
			super(view);
			itemName = view.findViewById(R.id.tvName) as TextView;
		}
	}
	
	
	override getItemViewType(position: Int): Int {
		if(hostStyle.title.isNullOrBlank()){
			// 无标题状态
			if(position == 0){
				return 1001
			}
			return 1002
		}else{
			// 有标题状态
			return 1002
		}
	}


    override onCreateViewHolder(
        parent: ViewGroup,
        viewType: Int
    ): ViewHolder {
		
		let view: View
		if(viewType == 1002){
			if(UTSAndroid.getAppDarkMode()){
				view =
				    LayoutInflater.from(parent.context).inflate(R.layout.uni_prompt_ac_recyclerview_layout_night, parent, false)
			}else{
				view =
				    LayoutInflater.from(parent.context).inflate(R.layout.uni_prompt_ac_recyclerview_layout, parent, false)
			}
		}else{
			if(UTSAndroid.getAppDarkMode()){
				view =
				    LayoutInflater.from(parent.context).inflate(R.layout.uni_prompt_ac_recyclerview_layout_top_night, parent, false)
			}else{
				view =
				    LayoutInflater.from(parent.context).inflate(R.layout.uni_prompt_ac_recyclerview_layout_top, parent, false)
			}
		}
		
        
        return ViewHolder(view)
    }

    override onBindViewHolder(holder: ViewHolder, position: Int) {
        let perContent: String = mItemList[position]
        holder.itemName.setText(perContent)
		if(this.hostStyle.itemColor != null && isValidColor(this.hostStyle.itemColor)){
			 holder.itemName.setTextColor(Color.parseColor(this.hostStyle.itemColor))
		}
		holder.itemName.setOnClickListener(new ItemClickListener(this.hostDialog,this.hostStyle,position));
    }

    override getItemCount(): Int {
        return mItemList.size
    }
	
}
/**
 * 工具方法，判断一个color 字符串是否合法
 */
function isValidColor(colorStr?:string):boolean{
	if(colorStr == null){
		return false
	}
	if(colorStr.length != 7){
		return false
	}
	if(!colorStr.startsWith("#")){
		return false
	}
	return true
}