💄 Format times on metrics page better

[Sone.git] / src / main / kotlin / net / pterodactylus / sone / template / DurationFormatFilter.kt

diff --git a/src/main/kotlin/net/pterodactylus/sone/template/DurationFormatFilter.kt b/src/main/kotlin/net/pterodactylus/sone/template/DurationFormatFilter.kt
new file mode 100644 (file)
index 0000000..559c9da
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/template/DurationFormatFilter.kt
@@ -0,0 +1,67 @@
+package net.pterodactylus.sone.template
+
+import net.pterodactylus.util.template.*
+import java.time.*
+
+class DurationFormatFilter : Filter {
+
+       override fun format(templateContext: TemplateContext?, data: Any?, parameters: Map<String, Any?>?): Any? {
+               if (data is Number) {
+                       val scale = parameters?.get("scale")
+                       val duration = when (scale) {
+                               "ms" -> Duration.ofSeconds(data.toLong() / 1_000, (data.toDouble() * 1_000_000 % 1_000_000_000).toLong())
+                               "μs" -> Duration.ofSeconds(data.toLong() / 1_000_000, (data.toDouble() * 1_000 % 1_000_000_000).toLong())
+                               "ns" -> Duration.ofSeconds(data.toLong() / 1_000_000_000, data.toLong() % 1_000_000_000)
+                               else -> Duration.ofSeconds(data.toLong(), (data.toDouble() * 1_000_000_000 % 1_000_000_000).toLong())
+                       }
+                       return FixedDuration.values()
+                                       .map { it to it.number(duration) }
+                                       .firstOrNull { it.second >= 1 }
+                                       ?.let { "${"%.1f".format(it.second)}${it.first.symbol}" }
+                                       ?: "0s"
+               }
+               return data
+       }
+
+}
+
+@Suppress("unused")
+private enum class FixedDuration {
+
+       WEEKS {
+               override fun number(duration: Duration) = DAYS.number(duration) / 7.0
+               override val symbol = "w"
+       },
+       DAYS {
+               override fun number(duration: Duration) = HOURS.number(duration) / 24
+               override val symbol = "d"
+       },
+       HOURS {
+               override fun number(duration: Duration) = MINUTES.number(duration) / 60
+               override val symbol = "h"
+       },
+       MINUTES {
+               override fun number(duration: Duration) = SECONDS.number(duration) / 60
+               override val symbol = "m"
+       },
+       SECONDS {
+               override fun number(duration: Duration) = duration.seconds + duration.nano / 1_000_000_000.0
+               override val symbol = "s"
+       },
+       MILLIS {
+               override fun number(duration: Duration) = duration.nano / 1_000_000.0
+               override val symbol = "ms"
+       },
+       MICROS {
+               override fun number(duration: Duration) = duration.nano / 1_1000.0
+               override val symbol = "μs"
+       },
+       NANOS {
+               override fun number(duration: Duration) = duration.nano.toDouble()
+               override val symbol = "ns"
+       };
+
+       abstract fun number(duration: Duration): Double
+       abstract val symbol: String
+
+}