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package com.pitchedapps.frost.utils
import org.jsoup.Jsoup
import org.jsoup.nodes.Attribute
import org.jsoup.nodes.Element
import org.jsoup.safety.Whitelist
/**
* Created by Allan Wang on 2017-08-10.
*
* Parses html with Jsoup and cleans the data, emitting just the frame containing debugging info
*
* Removes text, removes unnecessary nodes
*/
fun String.cleanHtml() = cleanText().cleanJsoup()
internal fun String.cleanText(): String = replace(Regex(">(?s).+?<"), "><")
internal fun String.cleanJsoup(): String = Jsoup.clean(this, PrivacyWhitelist())
class PrivacyWhitelist : Whitelist() {
val blacklistAttrs = arrayOf("style", "aria-label", "rel")
val blacklistTags = arrayOf("body", "html", "head", "i", "b", "u", "style", "script",
"br", "p", "span", "ul", "ol", "li")
override fun isSafeAttribute(tagName: String, el: Element, attr: Attribute): Boolean {
val key = attr.key
if (key == "href") attr.setValue("-")
return key !in blacklistAttrs
}
override fun isSafeTag(tag: String) = tag !in blacklistTags
}
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