src/main/kotlin/net/pterodactylus/rhynodge/webpages/weather/wetterde/WetterDeTrigger.kt

   1 package net.pterodactylus.rhynodge.webpages.weather.wetterde
   2
   3 import kotlinx.html.body
   4 import kotlinx.html.div
   5 import kotlinx.html.h1
   6 import kotlinx.html.head
   7 import kotlinx.html.html
   8 import kotlinx.html.img
   9 import kotlinx.html.stream.createHTML
  10 import kotlinx.html.style
  11 import kotlinx.html.unsafe
  12 import net.pterodactylus.rhynodge.Reaction
  13 import net.pterodactylus.rhynodge.State
  14 import net.pterodactylus.rhynodge.Trigger
  15 import net.pterodactylus.rhynodge.output.DefaultOutput
  16 import net.pterodactylus.rhynodge.output.Output
  17 import java.text.DateFormat
  18 import java.time.temporal.ChronoUnit
  19 import java.util.Locale
  20
  21 /**
  22  * TODO
  23  *
  24  * @author [David ‘Bombe’ Roden](mailto:bombe@pterodactylus.net)
  25  */
  26 class WetterDeTrigger : Trigger {
  27
  28     private val dateFormatter = DateFormat.getDateInstance(DateFormat.LONG, Locale.ENGLISH)
  29     private lateinit var state: WetterDeState
  30     private var changed = false
  31
  32     override fun mergeStates(previousState: State, currentState: State): State {
  33         changed = previousState != currentState
  34         state = currentState as WetterDeState
  35         return currentState
  36     }
  37
  38     override fun triggers(): Boolean {
  39         return changed
  40     }
  41
  42     override fun output(reaction: Reaction): Output {
  43         val output = DefaultOutput("The Weather (according to wetter.de) on %s".format(dateFormatter.format(state.dateTime.toInstant().toEpochMilli())))
  44         output.addText("text/html", generateHtmlOutput())
  45         return output
  46     }
  47
  48     private fun generateHtmlOutput(): String {
  49         return createHTML().html {
  50             head {
  51                 style("text/css") {
  52                     unsafe {
  53                         +".hour-state { display: table-row; } "
  54                         +".hour-state > div { display: table-cell; padding-right: 1em; } "
  55                     }
  56                 }
  57             }
  58             body {
  59                 val startTime = state.dateTime.toInstant()
  60                 h1 { +"The Weather (according to wetter.de) on %s".format(dateFormatter.format(startTime.toEpochMilli())) }
  61                 state.forEach {
  62                     div("hour-state") {
  63                         div("time") { +"%tH:%<tM".format(startTime.plus(it.hourIndex.toLong(), ChronoUnit.HOURS).toEpochMilli()) }
  64                         div("temperature") { +"%d °C".format(it.temperature) }
  65                         it.feltTemperature?.let {
  66                             div("felt-temperature") { +"(%d °C)".format(it) }
  67                         }
  68                         div("rain-probability") { +"%d%%".format((it.rainProbability * 100).toInt()) }
  69                         div("rain-amount") { +"%s l/m²".format(it.rainAmount.minDigits()) }
  70                         div("wind-direction") { +it.windDirection.arrow }
  71                         div("wind-speed") { +"%d km/h".format(it.windSpeed) }
  72                         it.gustSpeed?.let {
  73                             div("gust-speed") { +"(up to %d km/h)".format(it) }
  74                         }
  75                         it.humidity?.let {
  76                             div("humidity") { +"%d%%".format((it * 100).toInt()) }
  77                         }
  78                         div("description") { +it.description }
  79                         div("image") { img(src = it.image) }
  80                     }
  81                 }
  82             }
  83         }.toString()
  84     }
  85
  86     private fun Double.minDigits(): String {
  87         return this.toString().replace(Regex("\\.0*$"), "")
  88     }
  89
  90 }