/* 配置文件 */
function makeMap(str) {
	var map = Object.create(null),
		list = str.split(',');
	for (var item of list)
		map[item] = true;
	return map;
}
// 信任的属性列表，不在列表中的属性将被移除 
const trustAttrs = makeMap(
	"align,alt,app-id,appId,"
	// #ifdef MP-BAIDU
	+
	"appid,apid,"
	// #endif
	+
	"author,autoplay,border,cellpadding,cellspacing,class,color,colspan,controls,data-src,dir,face,height,href,id,ignore,loop,muted,name,path,poster,rowspan,size,span,src,start,style,type,lbType,lbtype,"
	// #ifdef MP-WEIXIN || MP-QQ
	+
	"unit-id,unitId,"
	// #endif
	+
	"width,xmlns"
);
// 信任的标签，将保持标签名不变 
const trustTags = makeMap(
	"a,abbr,ad,audio,b,blockquote,br,code,col,colgroup,dd,del,dl,dt,div,em,fieldset,h1,h2,h3,h4,h5,h6,hr,i,img,ins,label,legend,li,ol,p,q,source,span,strong,sub,sup,table,tbody,td,tfoot,th,thead,tr,title,u,ul,video,iframe"
);
// 块级标签，将被转为 div
const blockTags = makeMap("address,article,aside,body,center,cite,footer,header,html,nav,pre,section");
// 被移除的标签（其中 svg 系列标签会被转为图片） 
const ignoreTags = makeMap(
	"area,base,basefont,canvas,circle,command,ellipse,embed,frame,head,input,isindex,keygen,line,link,map,meta,param,path,polygon,rect,script,source,svg,textarea,track,use,wbr,"
);
// 只能用 rich-text 显示的标签（其中图片不能预览、不能显示视频、音频等） 
const richOnlyTags = makeMap(
	"a,ad,audio,colgroup,fieldset,legend,li,ol,sub,sup,table,tbody,td,tfoot,th,thead,tr,ul,video,iframe,");
// 自闭合标签
const selfClosingTags = makeMap(
	"area,base,basefont,br,col,circle,ellipse,embed,frame,hr,img,input,isindex,keygen,line,link,meta,param,path,polygon,rect,source,track,use,wbr,"
);
// 默认的标签样式
var userAgentStyles = {
	a: "color:#366092;word-break:break-all;padding:1.5px 0 1.5px 0",
	address: "font-style:italic",
	blockquote: "background-color:#f6f6f6;border-left:3px solid #dbdbdb;color:#6c6c6c;padding:5px 0 5px 10px",
	center: "text-align:center",
	cite: "font-style:italic",
	code: "padding:0 1px 0 1px;margin-left:2px;margin-right:2px;background-color:#f8f8f8;border-radius:3px",
	dd: "margin-left:40px",
	img: "max-width:100%",
	mark: "background-color:yellow",
	pre: "font-family:monospace;white-space:pre;overflow:scroll",
	s: "text-decoration:line-through",
	u: "text-decoration:underline"
};
// #ifndef MP-ALIPAY || H5
const SDKVersion = uni.getSystemInfoSync().SDKVersion;

function versionHigherThan(version = '') {
	var v1 = SDKVersion.split('.'),
		v2 = version.split('.');
	while (v1.length != v2.length)
		v1.length < v2.length ? v1.push('0') : v2.push('0');
	for (var i = 0; i < v1.length; i++) {
		if (v1[i] == v2[i]) continue;
		if (parseInt(v1[i]) > parseInt(v2[i])) return true;
		return false;
	}
	return true;
};
// #endif
// #ifdef MP-WEIXIN || MP-QQ
// 版本兼容
if (versionHigherThan("2.7.1")) {
	trustTags.bdi = true;
	trustTags.bdo = true;
	trustTags.caption = true;
	trustTags.rt = true;
	trustTags.ruby = true;
	ignoreTags.rp = true;
	trustTags.big = true;
	trustTags.small = true;
	trustTags.pre = true;
	trustTags.iframe = true;
	richOnlyTags.bdi = true;
	richOnlyTags.bdo = true;
	richOnlyTags.caption = true;
	richOnlyTags.rt = true;
	richOnlyTags.ruby = true;
	richOnlyTags.pre = true;
	blockTags.pre = undefined;
} else {
	blockTags.caption = true;
	userAgentStyles.big = "display:inline;font-size:1.2em";
	userAgentStyles.small = "display:inline;font-size:0.8em";
}
// #endif
function bubbling(Parser) {
	for (var i = Parser._STACK.length - 1; i >= 0; i--) {
		if (!richOnlyTags[Parser._STACK[i].name])
			Parser._STACK[i].c = 1;
		else return false;
	}
	return true;
}
module.exports = {
	// 高亮处理函数
	highlight: null,
	// 处理标签的属性，需要通过组件递归方式显示的标签需要调用 bubbling(Parser)
	LabelAttrsHandler(node, Parser) {
		let default_style = "max-width: 100% !important;display:block;"
		node.attrs.style = Parser.CssHandler.match(node.name, node.attrs, node) + (node.attrs.style || '');
		switch (node.name) {
			case "ul":
			case "ol":
			case "li":
			case "dd":
			case "dl":
			case "dt":
			case "div":
			case "span":
			case "em":
			case 'p':
				if (node.name === 'span') {
					default_style = 'white-space:normal;'
				}
				if (node.name === 'p' && (!node.attrs.style || !node.attrs.style.includes('margin-top:'))) {
					default_style += 'margin-top:10px;'
				}
				if (node.attrs.style) {
					node.attrs.style = node.attrs.style.includes('width:') ? default_style : node.attrs.style +
						`;${default_style}`
				}
				if (node.attrs.align) {
					node.attrs.style = "text-align:" + node.attrs.align + ';' + node.attrs.style;
					node.attrs.align = undefined;
				}
				break;
			case "img":
				if (node.attrs.height) {
					node.attrs.height = 'auto'
				}
				if (node.attrs.style) {
					node.attrs.style = node.attrs.style.includes('height:') ? default_style : node.attrs.style +
						`;${default_style}`
				}
				if (node.attrs["data-src"]) {
					node.attrs.src = node.attrs.src || node.attrs["data-src"];
					node.attrs["data-src"] = undefined;
				}
				// #ifdef MP-BAIDU || MP-TOUTIAO
				if (Parser._imgMode == "widthFix") node.attrs.style = node.attrs.style + ";height:auto !important;";
				// #endif
				if (node.attrs.src) {
					if (!node.attrs.ignore) {
						if (bubbling(Parser)) node.attrs.i = (Parser._imgNum++).toString();
						else node.attrs.ignore = "true";
					}
					if (Parser._domain && node.attrs.src[0] == '/') {
						if (node.attrs.src[1] == '/') node.attrs.src = Parser._protocol + ":" + node.attrs.src;
						else node.attrs.src = Parser._domain + node.attrs.src;
					}
				}
				break;
			case 'a':
			case "ad":
				bubbling(Parser);
				break;
			case "font":
				if (node.attrs.color) {
					node.attrs.style = "color:" + node.attrs.color + ';' + node.attrs.style;
					node.attrs.color = undefined;
				}
				if (node.attrs.face) {
					node.attrs.style = "font-family:" + node.attrs.face + ';' + node.attrs.style;
					node.attrs.face = undefined;
				}
				if (node.attrs.size) {
					var size = parseInt(node.attrs.size);
					if (size < 1) size = 1;
					else if (size > 7) size = 7;
					var map = ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large"];
					node.attrs.style = "font-size:" + map[size - 1] + ';' + node.attrs.style;
					node.attrs.size = undefined;
				}
				break;
			case 'iframe':
			case "video":
			case "audio":
				node.attrs.loop = node.attrs.hasOwnProperty('loop') || false;
				node.attrs.controls = node.attrs.hasOwnProperty(
					'controls') || true;
				node.attrs.autoplay = node.attrs.hasOwnProperty('autoplay') || false;
				if (node.attrs.id) Parser['_' + node.name + "Num"]++;
				else node.attrs.id = (node.name + (++Parser['_' + node.name + "Num"]));
				if (node.name == "video") {
					node.attrs.style = node.attrs.style || '';
					if (node.attrs.width) {
						node.attrs.style = "width:" + parseFloat(node.attrs.width) + (node.attrs.height.includes(
								'%') ? '%' : "px") +
							';' + node.attrs.style;
						node.attrs.width = undefined;
					}
					if (node.attrs.height) {
						node.attrs.style = "height:" + parseFloat(node.attrs.height) + (node.attrs.height.includes(
								'%') ? '%' : "px") +
							';' + node.attrs.style;
						node.attrs.height = undefined;
					}
					if (Parser._videoNum > 3) node.lazyLoad = true;
				}
				// 新增iframe【create_by_xx】 
				if (node.name == 'iframe') {
					// console.log(node.attrs, "====iframe attrs");
				}
				node.attrs.source = [];
				if (node.attrs.src) node.attrs.source.push(node.attrs.src);
				if (!node.attrs.controls && !node.attrs.autoplay)
					console.warn("存在没有controls属性的 " + node.name + " 标签，可能导致无法播放", node);
				bubbling(Parser);
				break;
			case "source":
				var parent = Parser._STACK[Parser._STACK.length - 1];
				if (parent && (parent.name == "video" || parent.name == "audio")) {
					parent.attrs.source.push(node.attrs.src);
					if (!parent.attrs.src) parent.attrs.src = node.attrs.src;
				}
				break;
		}
		if (Parser._domain && node.attrs.style.includes("url"))
			node.attrs.style = node.attrs.style.replace(/url\s*\(['"\s]*(\S*?)['"\s]*\)/, function() {
				var src = arguments[1];
				if (src && src[0] == '/') {
					if (src[1] == '/') return "url(" + Parser._protocol + ':' + src + ')';
					else return "url(" + Parser._domain + src + ')';
				} else return arguments[0];
			})
		if (!node.attrs.style) node.attrs.style = undefined;
		if (Parser._useAnchor && node.attrs.id) bubbling(Parser);
	},
	trustAttrs,
	trustTags,
	blockTags,
	ignoreTags,
	selfClosingTags,
	userAgentStyles,
	// #ifndef MP-ALIPAY || H5
	versionHigherThan,
	// #endif
	makeMap
}