1 package net.pterodactylus.rhynodge.webpages.weather.wettercom
3 import net.pterodactylus.rhynodge.Filter
4 import net.pterodactylus.rhynodge.State
5 import net.pterodactylus.rhynodge.states.FailedState
6 import net.pterodactylus.rhynodge.states.HtmlState
7 import org.jsoup.nodes.Document
8 import org.jsoup.nodes.Element
9 import java.time.LocalDateTime
10 import java.time.ZoneId.of
11 import java.time.ZonedDateTime
12 import java.time.format.DateTimeFormatter
15 * HTML parser for [wetter.com](https://www.wetter.com/).
17 * @author [David ‘Bombe’ Roden](mailto:bombe@pterodactylus.net)
19 class WetterComFilter : Filter {
21 private val dateTimeFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
23 override fun filter(state: State?): State {
24 if (state?.success()?.not() ?: true) {
25 return FailedState.from(state)
27 if (state !is HtmlState) {
28 throw IllegalArgumentException("")
31 return parseWetterComState(state)
34 private fun parseWetterComState(state: HtmlState): State {
35 val dateTime = parseDateTime(state.document()) ?: return FailedState(IllegalArgumentException("no date present"))
36 val wetterComState = WetterComState(dateTime)
37 parseHourStates(state.document()).forEach { wetterComState.addHour(it) }
41 private fun parseDateTime(document: Document): ZonedDateTime? {
42 val dateElement = document.select("#furtherDetails .portable-mb h3")
43 .single()?.text()?.split(",")?.get(1)?.trim() ?: return null
44 val timeElement = document.select(".weather-strip--detail .delta.palm-hide")
45 .first()?.text()?.split(" ")?.first() ?: return null
46 return LocalDateTime.from(dateTimeFormatter.parse("%s %s".format(dateElement, timeElement))).atZone(of("Europe/Berlin"))
49 private fun parseHourStates(document: Document): List<HourState> {
50 return document.select(".weather-strip--detail").mapIndexed { index, element -> parseHourState(index, element) }
53 private fun parseHourState(index: Int, hourElement: Element): HourState {
54 return HourState.atHour(index)
55 .temperature(parseTemperature(hourElement))
56 .rainProbability(parseRainProbability(hourElement))
57 .rainAmount(parseRainAmount(hourElement))
58 .windFrom(parseWindDirection(hourElement))
59 .at(parseWindSpeed(hourElement))
60 .describedAs(parseDescription(hourElement))
61 .withImage(parseImageUrl(hourElement))
65 private fun parseTemperature(hourElement: Element) =
66 hourElement.extractText(".weather-strip__2 .item-weathericon .palm-hide").filter { (it >= '0') and (it <= '9') }.toDouble()
68 private fun parseRainProbability(hourElement: Element) =
69 hourElement.extractText(".weather-strip__3 .text--left:eq(0) .flag__body span:eq(0)").filter { (it >= '0') and (it <= '9') }.toDouble() / 100.0
71 private fun parseRainAmount(hourElement: Element) =
72 hourElement.extractText(".weather-strip__3 .text--left:eq(0) .flag__body span:eq(1)").trim().split(" ")[1].toDouble()
74 private fun parseWindDirection(hourElement: Element) =
75 hourElement.extractText(".weather-strip__3 .text--left:eq(1) .flag__body span:eq(0)").trim().split(",")[0].toWindDirection()
77 private fun parseWindSpeed(hourElement: Element) =
78 hourElement.extractText(".weather-strip__3 .text--left:eq(1) .flag__body span:eq(0)").split(Regex("[, ]+"))[1].toDouble()
80 private fun parseDescription(hourElement: Element) =
81 hourElement.extractText(".weather-strip__1 .vhs-text--small")
83 private fun parseImageUrl(hourElement: Element) =
84 hourElement.select(".weather-strip__2 img").firstOrNull()?.attr("src") ?: ""
86 private fun Element.extractText(selector: String) = select(selector).firstOrNull()?.text() ?: ""