More shit.

src/main/java/Main.kt

@@ -6,9 +6,19 @@ import io.ktor.server.cio.*
 import io.ktor.server.engine.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
+import java.nio.file.Files
+import kotlin.io.path.Path
 
 
 suspend fun main() {
+    val path = Path("data.json")
+
+    if (Files.isRegularFile(path)) {
+        RaceHolder.load(path)
+    }
+    Runtime.getRuntime().addShutdownHook(Thread {
+        RaceHolder.save(path)
+    })
 
     val kord = Kord("MTE3MTIwODc1MDE5MTg5MDQ4Mw.GOUedL.i3zD6IG5B6fFRvaSOotWwJ5KBRK2whC9xr0vL8")
     kord.on<MessageCreateEvent> {

src/main/java/RaceHolder.kt

@@ -1,9 +1,15 @@
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.StandardOpenOption
 
 @Serializable
 data class RaceData(var name: String, var description: String) {
-    val trackList = arrayListOf<Long>()
-    val leaderboardMap = hashMapOf<Long, Velocidrone.Leaderboard>()
+    private val trackList = arrayListOf<Long>()
+    private val leaderboardMap = hashMapOf<Long, Velocidrone.Leaderboard>()
+    private var totalScores = arrayListOf<Pair<String, Long>>()
 
     fun addTrack(trackId: Long) {
         trackList.add(trackId)
@@ -14,7 +20,7 @@ data class RaceData(var name: String, var description: String) {
         leaderboardMap.remove(trackId)
     }
 
-    suspend fun rescanLeaderboard(trackId: Long, newLeaderboardCallback: (Velocidrone.Leaderboard) -> Unit) {
+    private suspend fun rescanLeaderboard(trackId: Long, newLeaderboardCallback: (Velocidrone.Leaderboard) -> Unit) {
         if (trackList.contains(trackId)) {
             Velocidrone.getLeaderboardForId(trackId).getOrNull()?.let { newLeaderboard ->
                 if (leaderboardMap[trackId]?.equals(newLeaderboard) == false) {
@@ -25,17 +31,56 @@ data class RaceData(var name: String, var description: String) {
         }
     }
 
-    fun getTotalScores(): List<Pair<String, Long>> {
+    suspend fun rescanAll() {
+        var changes = false
+        trackList.forEach {
+            rescanLeaderboard(it) {
+                changes = true
+            }
+        }
+        if (changes) {
+            calculateTotalScores()
+        }
+    }
+
+    fun calculateTotalScores() {
         val scoreMap = hashMapOf<String, Long>()
         leaderboardMap.forEach { leaderboardEntry ->
-            val sortedTimes = leaderboardEntry.value.tracktimes.sortedBy { it.lap_time }.forEach {
+            leaderboardEntry.value.tracktimes.sortedBy { it.lap_time }.forEach {
                 scoreMap[it.playername] = scoreMap.getOrDefault(it.playername, 0L) + 1
             }
         }
-        return scoreMap.toList().sortedByDescending { it.second }
+        synchronized(totalScores) {
+            totalScores.clear()
+            scoreMap.asIterable().sortedByDescending { it.value }.map { it.toPair() }.toCollection(totalScores)
+        }
     }
 }
 
 object RaceHolder {
-    val races = arrayListOf<RaceData>()
+    var races = arrayListOf<RaceData>()
+
+    fun save(path: Path) {
+        val tempSavePath = path.resolveSibling("save.json.tmp")
+        val stream = Files.newBufferedWriter(
+            tempSavePath,
+            StandardOpenOption.TRUNCATE_EXISTING,
+            StandardOpenOption.WRITE,
+            StandardOpenOption.CREATE
+        ).buffered()
+        stream.write(Json.encodeToString(races))
+        stream.flush()
+        stream.close()
+
+        if (Files.isRegularFile(path)) {
+            Files.delete(path)
+        }
+        Files.move(tempSavePath, path)
+    }
+
+    fun load(path: Path) {
+        val stream = Files.newBufferedReader(path)
+        races = Json.decodeFromString(stream.readText())
+        stream.close()
+    }
 }

src/main/java/RacePage.kt

@@ -1,14 +1,32 @@
 import io.ktor.server.application.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import io.ktor.util.pipeline.*
-import kotlinx.html.div
-import kotlinx.html.h1
-import kotlinx.html.p
+import kotlinx.html.*
 
 fun Routing.racePage() {
-    get("/races") {
+    get("/race/list") {
         raceOverviewPage(RaceHolder.races)
     }
+    get("/race/new") {
+        newRacePage()
+    }
+    post("/race/new") {
+        val parameters = call.receiveParameters()
+        val name = parameters["name"]
+        val description = parameters["description"]
+        if (name == null || description == null) {
+            newRacePage("Not all parameters given.", name ?: "", description ?: "")
+            return@post
+        }
+        if (RaceHolder.races.any { it.name == name }) {
+            newRacePage("Race with the same name already exists.", name, description)
+            return@post
+        }
+        RaceHolder.races.add(RaceData(name, description))
+        call.respondRedirect("/race/list")
+    }
 }
 
 private suspend fun PipelineContext<Unit, ApplicationCall>.raceOverviewPage(races: ArrayList<RaceData>) {
@@ -22,4 +40,37 @@ private suspend fun PipelineContext<Unit, ApplicationCall>.raceOverviewPage(race
             }
         }
     }
+}
+
+private suspend fun PipelineContext<Unit, ApplicationCall>.newRacePage(
+    error: String? = null,
+    name: String = "",
+    description: String = ""
+) {
+    respondThemedHtml("Race Overview") {
+        form("/race/new", encType = FormEncType.applicationXWwwFormUrlEncoded, method = FormMethod.post) {
+            error?.let {
+                p(classes = "error") {
+                    +it
+                }
+            }
+            p {
+                +"Name:"
+                textInput(name = "name") {
+                    value = name
+                }
+            }
+            p {
+                +"Description:"
+            }
+            p {
+                TEXTAREA(mapOf("name" to "description", "rows" to "4", "cols" to "40"), consumer).visit {
+                    +description
+                }
+            }
+            p {
+                submitInput()
+            }
+        }
+    }
 }