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 net.pterodactylus.rhynodge.webpages.weather.HourState
8 import net.pterodactylus.rhynodge.webpages.weather.WindDirection
9 import net.pterodactylus.rhynodge.webpages.weather.toWindDirection
10 import org.jsoup.nodes.Document
11 import org.jsoup.nodes.Element
12 import java.time.LocalDateTime
13 import java.time.ZoneId.of
14 import java.time.ZonedDateTime
15 import java.time.format.DateTimeFormatter
18 * HTML parser for [wetter.com](https://www.wetter.com/).
20 * @author [David ‘Bombe’ Roden](mailto:bombe@pterodactylus.net)
22 class WetterComFilter : Filter {
24 private val dateTimeFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
26 override fun filter(state: State): State {
27 if (state.success().not()) {
28 return FailedState.from(state)
30 if (state !is HtmlState) {
31 throw IllegalArgumentException("")
34 return parseWetterComState(state)
37 private fun parseWetterComState(state: HtmlState): State {
38 val dateTime = parseDateTime(state.document()) ?: return FailedState(IllegalArgumentException("no date present"))
39 val wetterComState = WetterComState(dateTime)
40 parseHourStates(state.document()).forEach { wetterComState += it }
44 private fun parseDateTime(document: Document): ZonedDateTime? {
45 val dateElement = document.select("#furtherDetails .portable-mb h3")
46 .single()?.text()?.split(",")?.get(1)?.trim() ?: return null
47 val timeElement = document.select(".weather-strip--detail .delta.palm-hide")
48 .first()?.text()?.split(" ")?.first() ?: return null
49 return LocalDateTime.from(dateTimeFormatter.parse("%s %s".format(dateElement, timeElement))).atZone(of("Europe/Berlin"))
52 private fun parseHourStates(document: Document): List<HourState> {
53 return document.select(".weather-strip--detail").mapIndexed { index, element -> parseHourState(index, element) }
56 private fun parseHourState(index: Int, hourElement: Element): HourState {
59 temperature = hourElement.temperature,
60 rainProbability = hourElement.rainProbability,
61 rainAmount = hourElement.rainAmount,
62 windDirection = hourElement.windDirection,
63 windSpeed = hourElement.windSpeed,
64 description = hourElement.description,
65 image = hourElement.imageUrl
69 private val Element.temperature: Int
70 get() = extractText(".weather-strip__2 .item-weathericon .palm-hide").filter { (it >= '0') and (it <= '9') }.toInt()
72 private val Element.rainProbability: Double
73 get() = extractText(".weather-strip__3 .text--left:eq(0) .flag__body span:eq(0)").filter { (it >= '0') and (it <= '9') }.toDouble() / 100.0
75 private val Element.rainAmount: Double
76 get() = extractText(".weather-strip__3 .text--left:eq(0) .flag__body span:eq(1)").trim().split(" ").getOrNull(1)?.toDouble() ?: 0.0
78 private val Element.windDirection: WindDirection
79 get() = extractText(".weather-strip__3 .text--left:eq(1) .flag__body span:eq(0)").trim().split(",")[0].toWindDirection()
81 private val Element.windSpeed: Int
82 get() = extractText(".weather-strip__3 .text--left:eq(1) .flag__body span:eq(0)").split(Regex("[, ]+"))[1].toInt()
84 private val Element.description: String
85 get() = extractText(".weather-strip__1 .vhs-text--small")
87 private val Element.imageUrl: String
88 get() = select(".weather-strip__2 img").firstOrNull()?.attr("src") ?: ""
90 private fun Element.extractText(selector: String) = select(selector).firstOrNull()?.text() ?: ""