API in progress: tournament and registration ok

2023-05-15 10:50:51 +02:00
parent c82f36c776
commit 30a9bad259
15 changed files with 248 additions and 191 deletions
--- a/test.sh
+++ b/test.sh
@@ -3,25 +3,17 @@
 curl -s --header "Accept: application/json" --header "Content-Type: application/json" \
  --request POST \
  --data '{ "type":"INDIVIDUAL","name":"Mon Tournoi", "shortName": "mon-tournoi", "startDate": "2023-05-10", "endDate": "2023-05-12", "country": "FR", "location": "Marseille", "online": false, "timeSystem": { "type": "fisher", "mainTime": "1200", "increment": "10" }, "pairing": { "type": "ROUNDROBIN" } }' \
-  http://localhost:8080/api/tournament
+  http://localhost:8080/api/tour

-curl -s --header "Accept: application/json" http://localhost:8080/api/tournament
+curl -s --header "Accept: application/json" http://localhost:8080/api/tour

-curl -s --header "Accept: application/json" http://localhost:8080/api/tournament/1
+curl -s --header "Accept: application/json" http://localhost:8080/api/tour/1

 curl -s --header "Accept: application/json" --header "Content-Type: application/json" \
  --request POST \
  --data '{ "name": "Burma", "firstname": "Nestor", "rating": 1600, "rank": -2, "country": "FR", "club": "13Ma" }' \
-  http://localhost:8080/api/player
-
-curl -s --header "Accept: application/json" http://localhost:8080/api/player
-
-curl -s --header "Accept: application/json" --header "Content-Type: application/json" \
-  --request POST \
-  --data '{ "id": 1 }' \
-  http://localhost:8080/api/tournament/1/registration
-
-curl -s --header "Accept: application/json" http://localhost:8080/api/tournament/1/registration
+  http://localhost:8080/api/tour/1/part

+curl -s --header "Accept: application/json" http://localhost:8080/api/tour/1/part


--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairgothApiHandler.kt
@@ -0,0 +1,11 @@
+package org.jeudego.pairgoth.api
+
+import org.jeudego.pairgoth.model.Tournament
+import org.jeudego.pairgoth.store.Store
+import javax.servlet.http.HttpServletRequest
+
+interface PairgothApiHandler: ApiHandler {
+
+    fun getTournament(request: HttpServletRequest): Tournament? = getSelector(request)?.toIntOrNull()?.let { Store.getTournament(it) }
+
+}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PairingHandler.kt
@@ -0,0 +1,21 @@
+package org.jeudego.pairgoth.api
+
+import com.republicate.kson.Json
+import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
+import org.jeudego.pairgoth.model.Tournament
+import org.jeudego.pairgoth.store.Store
+import javax.servlet.http.HttpServletRequest
+
+object PairingHandler: ApiHandler {
+
+    private fun getTournament(request: HttpServletRequest): Tournament {
+        val tournamentId = getSelector(request)?.toIntOrNull() ?: ApiHandler.badRequest("invalid tournament id")
+        return Store.getTournament(tournamentId) ?: ApiHandler.badRequest("unknown tournament id")
+    }
+
+    override fun get(request: HttpServletRequest): Json {
+        val tournament = getTournament(request)
+        val round = request.getParameter("round")?.toIntOrNull() ?: badRequest("invalid round number")
+        return Json.Object();
+    }
+}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PlayerHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/PlayerHandler.kt
@@ -1,35 +1,43 @@
 package org.jeudego.pairgoth.api

 import com.republicate.kson.Json
+import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
 import org.jeudego.pairgoth.model.Player
-import org.jeudego.pairgoth.model.Tournament
 import org.jeudego.pairgoth.model.fromJson
-import org.jeudego.pairgoth.model.toJson
-import org.jeudego.pairgoth.store.Store
 import javax.servlet.http.HttpServletRequest

-object PlayerHandler: ApiHandler {
+object PlayerHandler: PairgothApiHandler {
+
+    override fun get(request: HttpServletRequest): Json {
+        val tournament = getTournament(request) ?: badRequest("invalid tournament")
+        return when (val pid = getSubSelector(request)?.toIntOrNull()) {
+            null -> Json.Array(tournament.pairables.values.map { it.toJson() })
+            else -> tournament.pairables[pid]?.toJson() ?: badRequest("no player with id #${pid}")
+        }
+    }

    override fun post(request: HttpServletRequest): Json {
+        val tournament = getTournament(request) ?: badRequest("invalid tournament")
        val payload = getObjectPayload(request)
-
-        // player parsing
+        // player parsing (CB TODO - team handling, based on tournament type)
        val player = Player.fromJson(payload)
-
-        Store.addPlayer(player)
+        // CB TODO - handle concurrency
+        tournament.pairables[player.id] = player
+        // CB TODO - handle event broadcasting
        return Json.Object("success" to true, "id" to player.id)
    }

-    override fun get(request: HttpServletRequest): Json {
-        return when (val id = getSelector(request)?.toIntOrNull()) {
-            null -> Json.Array(Store.getPlayersIDs())
-            else -> Store.getPlayer(id)?.toJson() ?: ApiHandler.badRequest("no player with id #${id}")
-        }
-    }
-
    override fun put(request: HttpServletRequest): Json {
-        val id = getSelector(request)?.toIntOrNull() ?: ApiHandler.badRequest("missing or invalid player selector")
-        TODO()
+        val tournament = getTournament(request) ?: badRequest("invalid tournament")
+        val id = getSubSelector(request)?.toIntOrNull() ?: badRequest("missing or invalid player selector")
+        val player = tournament.pairables[id] ?: badRequest("invalid player id")
+        val payload = getObjectPayload(request)
+        val updated = Player.fromJson(payload, player as Player)
+        tournament.pairables[updated.id] = updated
+        return Json.Object("success" to true)
    }

+    override fun delete(request: HttpServletRequest): Json {
+        return super.delete(request)
+    }
 }
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/RegistrationHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/RegistrationHandler.kt
@@ -1,43 +0,0 @@
-package org.jeudego.pairgoth.api
-
-import com.republicate.kson.Json
-import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
-import org.jeudego.pairgoth.model.Tournament
-import org.jeudego.pairgoth.store.Store
-import javax.servlet.http.HttpServletRequest
-
-object RegistrationHandler: ApiHandler {
-
-    private fun getTournament(request: HttpServletRequest): Tournament {
-        val tournamentId = getSelector(request)?.toIntOrNull() ?: badRequest("invalid tournament id")
-        return Store.getTournament(tournamentId) ?: badRequest("unknown tournament id")
-    }
-
-    override fun get(request: HttpServletRequest): Json {
-        val tournament = getTournament(request)
-        return when (val pairableId = getSubSelector(request)?.toIntOrNull()) {
-            null -> when (val round = request.getParameter("round")?.toIntOrNull()) {
-                null -> Json.Array(tournament.pairables.map {
-                    Json.Object(
-                        "id" to it.key,
-                        "skip" to Json.Array(it.value)
-                    )
-                })
-                else -> Json.Array(tournament.pairables.filter { !it.value.contains(round) }.keys)
-            }
-            else -> Json.Array(tournament.pairables[pairableId])
-        }
-    }
-
-    override fun post(request: HttpServletRequest): Json {
-        val tournament = getTournament(request)
-        val payload = getObjectPayload(request)
-        val pairableId = payload.getInt("id") ?: badRequest("missing player id")
-        val skip = ( payload.getArray("skip") ?: Json.Array() ).map { Json.TypeUtils.toInt(it) ?: badRequest("invalid round number") }
-        if (tournament.pairables.contains(pairableId)) badRequest("already registered player: $pairableId")
-        /* CB TODO - update action for SSE channel */
-        tournament.pairables[pairableId] = skip.toMutableSet()
-        return Json.Object("success" to true)
-    }
-
-}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/ResultsHandler.kt
@@ -0,0 +1,4 @@
+package org.jeudego.pairgoth.api
+
+class ResultsHandler: ApiHandler {
+}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/StandingsHandler.kt
@@ -0,0 +1,4 @@
+package org.jeudego.pairgoth.api
+
+class StandingsHandler: ApiHandler {
+}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/api/TournamentHandler.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/api/TournamentHandler.kt
@@ -2,21 +2,20 @@ package org.jeudego.pairgoth.api

 import com.republicate.kson.Json
 import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
-import org.jeudego.pairgoth.model.CanadianByoyomi
-import org.jeudego.pairgoth.model.FisherTime
-import org.jeudego.pairgoth.model.MacMahon
-import org.jeudego.pairgoth.model.Rules
-import org.jeudego.pairgoth.model.StandardByoyomi
-import org.jeudego.pairgoth.model.SuddenDeath
-import org.jeudego.pairgoth.model.TimeSystem
 import org.jeudego.pairgoth.model.Tournament
-import org.jeudego.pairgoth.model.TournamentType
 import org.jeudego.pairgoth.model.fromJson
 import org.jeudego.pairgoth.model.toJson
 import org.jeudego.pairgoth.store.Store
 import javax.servlet.http.HttpServletRequest

-object TournamentHandler: ApiHandler {
+object TournamentHandler: PairgothApiHandler {
+
+    override fun get(request: HttpServletRequest): Json {
+        return when (val id = getSelector(request)?.toIntOrNull()) {
+            null -> Json.Array(Store.getTournamentsIDs())
+            else -> Store.getTournament(id)?.toJson() ?: badRequest("no tournament with id #${id}")
+        }
+    }

    override fun post(request: HttpServletRequest): Json {
        val payload = getObjectPayload(request)
@@ -28,15 +27,22 @@ object TournamentHandler: ApiHandler {
        return Json.Object("success" to true, "id" to tournament.id)
    }

-    override fun get(request: HttpServletRequest): Json {
-        return when (val id = getSelector(request)?.toIntOrNull()) {
-            null -> Json.Array(Store.getTournamentsIDs())
-            else -> Store.getTournament(id)?.toJson() ?: badRequest("no tournament with id #${id}")
-        }
+    override fun put(request: HttpServletRequest): Json {
+        val tournament = getTournament(request) ?: badRequest("missing or invalid tournament id")
+        val payload = getObjectPayload(request)
+        // disallow changing type
+        if (payload.getString("type")?.let { it != tournament.type.name } == true) badRequest("tournament type cannot be changed")
+        val updated = Tournament.fromJson(payload, tournament)
+        updated.pairables.putAll(tournament.pairables)
+        updated.games.addAll(tournament.games)
+        updated.criteria.addAll(tournament.criteria)
+        Store.replaceTournament(updated)
+        return Json.Object("success" to true)
    }

-    override fun put(request: HttpServletRequest): Json {
-        val id = getSelector(request)?.toIntOrNull() ?: badRequest("missing or invalid tournament selector")
-        TODO()
+    override fun delete(request: HttpServletRequest): Json {
+        val tournament = getTournament(request) ?: badRequest("missing or invalid tournament id")
+        Store.deleteTournament(tournament)
+        return Json.Object("success" to true)
    }
 }
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Game.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Game.kt
@@ -0,0 +1,5 @@
+package org.jeudego.pairgoth.model
+
+import org.jeudego.pairgoth.store.Store
+
+data class Game(val white: Int, val black: Int, var result: Char = '?', val id: Int = Store.nextGameId)
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Pairable.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Pairable.kt
@@ -1,6 +1,16 @@
 package org.jeudego.pairgoth.model

-sealed class Pairable(val id: Int, val name: String, val rating: Double, val rank: Int) {
+import com.republicate.kson.Json
+import org.jeudego.pairgoth.api.ApiHandler
+import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
+import org.jeudego.pairgoth.store.Store
+import kotlin.math.roundToInt
+
+// Pairable
+
+sealed class Pairable(val id: Int, val name: String, open val rating: Double, open val rank: Int) {
+    abstract fun toJson(): Json.Object
+    val skip = mutableSetOf<Int>() // skipped rounds
 }

 fun Pairable.displayRank(): String = when {
@@ -24,3 +34,63 @@ fun Pairable.setRank(rankStr: String): Int {
    }
 }

+// Player
+
+class Player(
+    id: Int,
+    name: String,
+    var firstname: String,
+    rating: Double,
+    rank: Int,
+    var country: String,
+    var club: String
+): Pairable(id, name, rating, rank) {
+    companion object
+    // used to store external IDs ("FFG" => FFG ID, "EGF" => EGF PIN, "AGA" => AGA ID ...)
+    val externalIds = mutableMapOf<String, String>()
+    override fun toJson() = Json.Object(
+        "id" to id,
+        "name" to name,
+        "firstname" to firstname,
+        "rating" to rating,
+        "rank" to rank,
+        "country" to country,
+        "club" to club
+    )
+}
+
+fun Player.Companion.fromJson(json: Json.Object, default: Player? = null) = Player(
+    id = json.getInt("id") ?: default?.id ?: Store.nextPlayerId,
+    name = json.getString("name") ?: default?.name ?: badRequest("missing name"),
+    firstname = json.getString("firstname") ?: default?.firstname ?: badRequest("missing firstname"),
+    rating = json.getDouble("rating") ?: default?.rating ?: badRequest("missing rating"),
+    rank = json.getInt("rank") ?: default?.rank ?: badRequest("missing rank"),
+    country = json.getString("country") ?: default?.country ?: badRequest("missing country"),
+    club = json.getString("club") ?: default?.club ?: badRequest("missing club")
+)
+
+// Team
+
+class Team(id: Int, name: String): Pairable(id, name, 0.0, 0) {
+    companion object {}
+    val players = mutableSetOf<Player>()
+    override val rating: Double get() = if (players.isEmpty()) super.rating else players.sumOf { player -> player.rating } / players.size
+    override val rank: Int get() = if (players.isEmpty()) super.rank else (players.sumOf { player -> player.rank.toDouble() } / players.size).roundToInt()
+    override fun toJson() = Json.Object(
+        "id" to id,
+        "name" to name,
+        "players" to Json.Array(players.map { it.toJson() })
+    )
+}
+
+fun Team.Companion.fromJson(json: Json.Object) = Team(
+    id = json.getInt("id") ?: Store.nextPlayerId,
+    name = json.getString("name") ?: badRequest("missing name")
+).apply {
+    json.getArray("players")?.let { arr ->
+        arr.map {
+            if (it != null && it is Json.Object) Player.fromJson(it)
+            else badRequest("invalid players array")
+        }
+    } ?: badRequest("missing players")
+}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Player.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Player.kt
@@ -1,39 +0,0 @@
-package org.jeudego.pairgoth.model
-
-import com.republicate.kson.Json
-import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
-import org.jeudego.pairgoth.store.Store
-
-class Player(
-    id: Int,
-    name: String,
-    var firstname: String,
-    rating: Double,
-    rank: Int,
-    var country: String,
-    var club: String
-): Pairable(id, name, rating, rank) {
-    companion object
-    // used to store external IDs ("FFG" => FFG ID, "EGF" => EGF PIN, "AGA" => AGA ID ...)
-    val externalIds = mutableMapOf<String, String>()
-}
-
-fun Player.Companion.fromJson(json: Json.Object) = Player(
-    id = json.getInt("id") ?: Store.nextPlayerId,
-    name = json.getString("name") ?: badRequest("missing name"),
-    firstname = json.getString("firstname") ?: badRequest("missing firstname"),
-    rating = json.getDouble("rating") ?: badRequest("missing rating"),
-    rank = json.getInt("rank") ?: badRequest("missing rank"),
-    country = json.getString("country") ?: badRequest("missing country"),
-    club = json.getString("club") ?: ""
-)
-
-fun Player.toJson() = Json.Object(
-    "id" to id,
-    "name" to name,
-    "firstname" to firstname,
-    "rating" to rating,
-    "rank" to rank,
-    "country" to country,
-    "club" to club
-)
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Team.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Team.kt
@@ -1,6 +1,2 @@
 package org.jeudego.pairgoth.model

-class Team(id: Int, name: String, rating: Double, rank: Int): Pairable(id, name, rating, rank) {
-    companion object {}
-    val players = mutableSetOf<Player>()
-}
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Tournament.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/model/Tournament.kt
@@ -6,7 +6,24 @@ import org.jeudego.pairgoth.api.ApiHandler
 import org.jeudego.pairgoth.api.ApiHandler.Companion.badRequest
 import org.jeudego.pairgoth.store.Store

-enum class TournamentType(val playersNumber: Int) {
+data class Tournament(
+    val id: Int,
+    val type: Type,
+    val name: String,
+    val shortName: String,
+    val startDate: LocalDate,
+    val endDate: LocalDate,
+    val country: String,
+    val location: String,
+    val online: Boolean,
+    val timeSystem: TimeSystem,
+    val pairing: Pairing,
+    val rules: Rules = Rules.FRENCH,
+    val gobanSize: Int = 19,
+    val komi: Double = 7.5
+) {
+    companion object {}
+    enum class Type(val playersNumber: Int) {
        INDIVIDUAL(1),
        PAIRGO(2),
        RENGO2(2),
@@ -15,46 +32,43 @@ enum class TournamentType(val playersNumber: Int) {
        TEAM3(3),
        TEAM4(4),
        TEAM5(5);
-}
+    }

-data class Tournament(
-    var id: Int,
-    var type: TournamentType,
-    var name: String,
-    var shortName: String,
-    var startDate: LocalDate,
-    var endDate: LocalDate,
-    var country: String,
-    var location: String,
-    var online: Boolean,
-    var timeSystem: TimeSystem,
-    var pairing: Pairing,
-    var rules: Rules = Rules.FRENCH,
-    var gobanSize: Int = 19,
-    var komi: Double = 7.5
-) {
-    companion object
-    // player/team id -> set of skipped rounds
-    val pairables = mutableMapOf<Int, MutableSet<Int>>()
+    enum class Criterion {
+        NBW, MMS, SOS, SOSOS, SODOS
+    }
+
+    // pairables
+    val pairables = mutableMapOf<Int, Pairable>()
+
+    // games per round
+    val games = mutableListOf<MutableMap<Int, Game>>()
+
+    // standings criteria
+    val criteria = mutableListOf<Criterion>(
+        if (pairing.type == Pairing.PairingType.MACMAHON) Criterion.MMS else Criterion.NBW,
+        Criterion.SOS,
+        Criterion.SOSOS
+    )
 }

 // Serialization

-fun Tournament.Companion.fromJson(json: Json.Object) = Tournament(
-    id = json.getInt("id") ?: Store.nextTournamentId,
-    type = json.getString("type")?.uppercase()?.let { TournamentType.valueOf(it) } ?: badRequest("missing type"),
-    name = json.getString("name") ?: ApiHandler.badRequest("missing name"),
-    shortName = json.getString("shortName") ?: ApiHandler.badRequest("missing shortName"),
-    startDate = json.getLocalDate("startDate") ?: ApiHandler.badRequest("missing startDate"),
-    endDate = json.getLocalDate("endDate") ?: ApiHandler.badRequest("missing endDate"),
-    country = json.getString("country") ?: ApiHandler.badRequest("missing country"),
-    location = json.getString("location") ?: ApiHandler.badRequest("missing location"),
-    online = json.getBoolean("online") ?: false,
-    komi = json.getDouble("komi") ?: 7.5,
-    rules = json.getString("rules")?.let { Rules.valueOf(it) } ?: Rules.FRENCH,
-    gobanSize = json.getInt("gobanSize") ?: 19,
-    timeSystem = TimeSystem.fromJson(json.getObject("timeSystem") ?: badRequest("missing timeSystem")),
-    pairing = MacMahon()
+fun Tournament.Companion.fromJson(json: Json.Object, default: Tournament? = null) = Tournament(
+    id = json.getInt("id") ?: default?.id ?: Store.nextTournamentId,
+    type = json.getString("type")?.uppercase()?.let { Tournament.Type.valueOf(it) } ?: default?.type ?:  badRequest("missing type"),
+    name = json.getString("name") ?: default?.name ?: badRequest("missing name"),
+    shortName = json.getString("shortName") ?: default?.shortName ?: badRequest("missing shortName"),
+    startDate = json.getLocalDate("startDate") ?: default?.startDate ?: badRequest("missing startDate"),
+    endDate = json.getLocalDate("endDate") ?: default?.endDate ?: badRequest("missing endDate"),
+    country = json.getString("country") ?: default?.country ?: badRequest("missing country"),
+    location = json.getString("location") ?: default?.location ?: badRequest("missing location"),
+    online = json.getBoolean("online") ?: default?.online ?: false,
+    komi = json.getDouble("komi") ?: default?.komi ?: 7.5,
+    rules = json.getString("rules")?.let { Rules.valueOf(it) } ?: default?.rules ?: Rules.FRENCH,
+    gobanSize = json.getInt("gobanSize") ?: default?.gobanSize ?: 19,
+    timeSystem = json.getObject("timeSystem")?.let { TimeSystem.fromJson(it) } ?: default?.timeSystem ?: badRequest("missing timeSystem"),
+    pairing = json.getObject("pairing")?.let { Pairing.fromJson(it) } ?: default?.pairing ?: badRequest("missing pairing")
 )

 fun Tournament.toJson() = Json.Object(
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/store/Store.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/store/Store.kt
@@ -5,14 +5,19 @@ import org.jeudego.pairgoth.model.Tournament
 import java.util.concurrent.atomic.AtomicInteger
 import kotlin.math.E

+// CB TODO - handle concurrency:
+// - either with concurrent maps
+// - or with a thread isolation (better, covers more operations)
+
 object Store {
    private val _nextTournamentId = AtomicInteger()
    private val _nextPlayerId = AtomicInteger()
+    private val _nextGameId = AtomicInteger()
    val nextTournamentId get() = _nextTournamentId.incrementAndGet()
    val nextPlayerId get() = _nextPlayerId.incrementAndGet()
+    val nextGameId get() = _nextGameId.incrementAndGet()

    private val tournaments = mutableMapOf<Int, Tournament>()
-    private val players = mutableMapOf<Int, Player>()

    fun addTournament(tournament: Tournament) {
        if (tournaments.containsKey(tournament.id)) throw Error("tournament id #${tournament.id} already exists")
@@ -23,12 +28,14 @@ object Store {

    fun getTournamentsIDs(): Set<Int> = tournaments.keys

-    fun addPlayer(player: Player) {
-        if (players.containsKey(player.id)) throw Error("player id #${player.id} already exists")
-        players[player.id] = player
+    fun replaceTournament(tournament: Tournament) {
+        if (!tournaments.containsKey(tournament.id)) throw Error("tournament id #${tournament.id} not known")
+        tournaments[tournament.id] = tournament
    }

-    fun getPlayer(id: Int) = players[id]
+    fun deleteTournament(tournament: Tournament) {
+        if (!tournaments.containsKey(tournament.id)) throw Error("tournament id #${tournament.id} not known")
+        tournaments.remove(tournament.id)

-    fun getPlayersIDs(): Set<Int> = players.keys
+    }
 }
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/web/ApiServlet.kt
@@ -2,7 +2,7 @@ package org.jeudego.pairgoth.web

 import com.republicate.kson.Json
 import org.jeudego.pairgoth.api.ApiHandler
-import org.jeudego.pairgoth.api.RegistrationHandler
+import org.jeudego.pairgoth.api.PairingHandler
 import org.jeudego.pairgoth.api.PlayerHandler
 import org.jeudego.pairgoth.api.TournamentHandler
 import org.jeudego.pairgoth.util.Colorizer.green
@@ -63,10 +63,11 @@ class ApiServlet : HttpServlet() {
            // choose handler

            val handler = when (entity) {
-                "tournament" ->
+                "tour" ->
                    when (subEntity) {
                        null -> TournamentHandler
-                        "registration" -> RegistrationHandler
+                        "part" -> PlayerHandler
+                        "pair" -> PairingHandler
                        else -> ApiHandler.badRequest("unknown sub-entity: $subEntity")
                    }
                "player" -> PlayerHandler
@@ -223,8 +224,8 @@ class ApiServlet : HttpServlet() {
    }

    companion object {
-        protected var logger = LoggerFactory.getLogger("api")
-        protected const val EXPECTED_CHARSET = "utf8"
+        private var logger = LoggerFactory.getLogger("api")
+        private const val EXPECTED_CHARSET = "utf8"
        const val AUTH_HEADER = "Authorization"
        const val AUTH_PREFIX = "Bearer"
        private fun isJson(mimeType: String): Boolean {