TheCitadelofRicks/src/main/kotlin/org/mosad/thecitadelofricks/hsoparser/MensaParser.kt

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/**
* TheCitadelofRicks
*
* Copyright 2019 <seil0@mosad.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
package org.mosad.thecitadelofricks.hsoparser
import org.jsoup.Jsoup
import org.jsoup.nodes.Document
import org.mosad.thecitadelofricks.Meal
import org.mosad.thecitadelofricks.MensaWeek
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import org.slf4j.LoggerFactory
import java.net.SocketTimeoutException
class MensaParser {
private var logger: org.slf4j.Logger = LoggerFactory.getLogger(MensaParser::class.java)
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/**
* returns the mensa's menu for a week
* @param mensaMenuURL the url to a mensa menu (swfr)
* @return the mensa's menu as MensaWeek found at menuURL or null if the request was not successful
*/
fun getMensaMenu(mensaMenuURL: String): MensaWeek? {
return try {
val menuHTML = Jsoup.connect(mensaMenuURL).timeout(15000).get()
parseMensaMenu(menuHTML)
} catch (ex: SocketTimeoutException) {
logger.warn("timeout from $mensaMenuURL, updating on next attempt!")
null
} catch (gex: Exception) {
logger.error("general MensaParser error", gex)
null
}
}
/**
* parse the mensa's menu from the html document
* @param htmlDoc the html document containing the menu
* @return the mensa's menu as MensaWeek
*/
fun parseMensaMenu(htmlDoc: Document): MensaWeek? {
val mealWeekList = MensaWeek()
try {
htmlDoc.select("#speiseplan-tabs").select("div.tab-content").select("div.menu-tagesplan")
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.forEachIndexed { dayIndex, day ->
val strDay = day.select("h3").text()
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day.select("div.menu-info").forEachIndexed { mealIndex, meal ->
val heading = day.select("h4")[mealIndex].text()
val parts = ArrayList(meal.html().substringBefore("<br>\n").replace("\n", "").split("<br>"))
val additives = meal.select("span.show-with-allergenes").text()
parts.removeIf { x -> x.isEmpty() || x.isBlank() }
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mealWeekList.days[dayIndex].meals.add(Meal(strDay, heading, parts, additives))
}
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}
} catch (pex: Exception) {
logger.error("error while parsing the html file", pex)
return null
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}
return mealWeekList
}
/**
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* return the link of the next weeks menus
* @param mensaMenuURL the current weeks menus link
*/
fun getMenuLinkNextWeek(mensaMenuURL: String): String {
val menuHTML = Jsoup.connect(mensaMenuURL).get()
return "https://www.swfr.de" + menuHTML.select("#speiseplan-tabs").select("a.next-week").attr("href")
}
}