import { Route } from "vue-router";
import { SketonVue } from "../types/sketon.vue";

export default {
	methods:{
		/**
		 * @param {*} _route  
		 * @returns 
		 * 判断route 是否使用时 点击过tagView
		 */	
		isExitView(this: SketonVue , _route:Route){
		  let index = this.page.visitViews.findIndex( (view:Route) => view.fullPath == _route.fullPath)
      	  return index
		},
		/**
		 * 将当前打开的tagView 调换到最后打开
		 */
		goLastVisitView(this: SketonVue , ){
			let lastView =	this.page.visitViews.pop()
			this.page.visitViews.unshift(lastView);
		},
		/**
		 *  关闭当前tagView 同时打开最后一次打开的tagview 
		 */
		closeAndGoLastVisitView(this: SketonVue ,  currentFullPath:string){
			let isVisitLastTags = false
			// 设置当前最后一个tag
			let visitIndex = this.page.visitViews.findIndex( (view:Route) => view.fullPath == currentFullPath)
			if(visitIndex == this.page.visitViews.length-1) {
				isVisitLastTags = true
			}
			this.page.visitViews.splice(visitIndex , 1)
			// 删除当前 tag
			let index = this.page.openedPages.findIndex((route:Route) => route.fullPath == currentFullPath);
      if (index > -1) {
			  // 清除当前页面的 alive 
			  this.removePageAlive(this.page.openedPages[index]);
        this.page.openedPages.splice(index, 1);
      }

			this.page.currentOpenPage = this.page.visitViews[this.page.visitViews.length-1] || this.page.defaultRoute
			sessionStorage.setItem('page', JSON.stringify(this.page))
			isVisitLastTags && this.ctx.redirect(this.page.currentOpenPage.fullPath)

		},
		removeView(this: SketonVue , fullPath:string){
			let index =	this.page.visitViews.findIndex( (route:Route) => route.fullPath == fullPath )
			if(index > -1 ) this.page.visitViews.splice(index ,1)
		},
		addLastView(this: SketonVue , route:Route){
			let viewIndex = this.isExitView(route)
			if(viewIndex > -1){
				this.page.visitViews.splice(viewIndex , 1)
			}
			this.page.visitViews.push(route)
		}

	}
}