Add dumb bots feature

10 files changed, 163 insertions, 4 deletions

diff --git a/settings.gradle.kts b/settings.gradle.kts
index e4b3c342..b312e0b8 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -5,3 +5,4 @@ include("sw-engine")
 include("sw-server")
 include("sw-client")
 include("sw-ui")
+include("sw-bot")
diff --git a/sw-bot/build.gradle.kts b/sw-bot/build.gradle.kts
new file mode 100644
index 00000000..fd4de5e0
--- /dev/null
+++ b/sw-bot/build.gradle.kts
@@ -0,0 +1,11 @@
+plugins {
+    kotlin("jvm")
+    id("org.jlleitschuh.gradle.ktlint")
+}
+
+dependencies {
+    implementation(project(":sw-client"))
+    implementation(kotlin("stdlib-jdk8"))
+    testImplementation(kotlin("test"))
+    testImplementation(kotlin("test-junit"))
+}
diff --git a/sw-bot/src/main/kotlin/org/luxons/sevenwonders/bot/SevenWondersBot.kt b/sw-bot/src/main/kotlin/org/luxons/sevenwonders/bot/SevenWondersBot.kt
new file mode 100644
index 00000000..deb7e237
--- /dev/null
+++ b/sw-bot/src/main/kotlin/org/luxons/sevenwonders/bot/SevenWondersBot.kt
@@ -0,0 +1,88 @@
+package org.luxons.sevenwonders.bot
+
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withTimeout
+import org.luxons.sevenwonders.client.SevenWondersClient
+import org.luxons.sevenwonders.client.SevenWondersSession
+import org.luxons.sevenwonders.model.Action
+import org.luxons.sevenwonders.model.MoveType
+import org.luxons.sevenwonders.model.PlayerMove
+import org.luxons.sevenwonders.model.PlayerTurnInfo
+import org.luxons.sevenwonders.model.resources.noTransactions
+import kotlin.random.Random
+import kotlin.time.Duration
+import kotlin.time.ExperimentalTime
+import kotlin.time.hours
+
+@OptIn(ExperimentalTime::class)
+data class BotConfig(
+    val minActionDelayMillis: Long = 500,
+    val maxActionDelayMillis: Long = 1000,
+    val globalTimeout: Duration = 10.hours
+)
+
+@OptIn(ExperimentalTime::class)
+class SevenWondersBot(
+    private val displayName: String,
+    private val botConfig: BotConfig = BotConfig()
+) {
+    private val client = SevenWondersClient()
+
+    suspend fun play(serverHost: String, gameId: Long) = withTimeout(botConfig.globalTimeout) {
+        val session = client.connect(serverHost)
+        botDelay()
+        session.chooseName(displayName)
+        botDelay()
+        session.joinGame(gameId)
+        botDelay()
+        session.awaitGameStart(gameId)
+
+        coroutineScope {
+            launch {
+                session.watchTurns().first { turn ->
+                    botDelay()
+                    val keepPlaying = session.playTurn(turn)
+                    !keepPlaying
+                }
+            }
+            botDelay()
+            session.sayReady() // triggers the first turn
+        }
+        session.disconnect()
+    }
+
+    private suspend fun botDelay() {
+        delay(Random.nextLong(botConfig.minActionDelayMillis, botConfig.maxActionDelayMillis))
+    }
+
+    private suspend fun SevenWondersSession.playTurn(turn: PlayerTurnInfo): Boolean {
+        when (turn.action) {
+            Action.PLAY, Action.PLAY_2, Action.PLAY_LAST -> prepareMove(createPlayCardMove(turn))
+            Action.PICK_NEIGHBOR_GUILD -> prepareMove(createPickGuildMove(turn))
+            Action.SAY_READY -> sayReady()
+            Action.WAIT -> Unit
+            Action.WATCH_SCORE -> return false
+        }
+        return true
+    }
+}
+
+private fun createPlayCardMove(turnInfo: PlayerTurnInfo): PlayerMove {
+    val wonderBuildability = turnInfo.wonderBuildability
+    if (wonderBuildability.isBuildable) {
+        val transactions = wonderBuildability.cheapestTransactions.first()
+        return PlayerMove(MoveType.UPGRADE_WONDER, turnInfo.hand!!.first().name, transactions)
+    }
+    val playableCard = turnInfo.hand!!.firstOrNull { it.playability.isPlayable }
+    return if (playableCard != null) {
+        PlayerMove(MoveType.PLAY, playableCard.name, playableCard.playability.cheapestTransactions.first())
+    } else {
+        PlayerMove(MoveType.DISCARD, turnInfo.hand!!.first().name, noTransactions())
+    }
+}
+
+private fun createPickGuildMove(turnInfo: PlayerTurnInfo): PlayerMove =
+    PlayerMove(MoveType.COPY_GUILD, turnInfo.neighbourGuildCards.first().name)
diff --git a/sw-client/src/commonMain/kotlin/org/luxons/sevenwonders/client/SevenWondersClient.kt b/sw-client/src/commonMain/kotlin/org/luxons/sevenwonders/client/SevenWondersClient.kt
index 480e9d67..e13ab505 100644
--- a/sw-client/src/commonMain/kotlin/org/luxons/sevenwonders/client/SevenWondersClient.kt
+++ b/sw-client/src/commonMain/kotlin/org/luxons/sevenwonders/client/SevenWondersClient.kt
@@ -18,6 +18,7 @@ import org.luxons.sevenwonders.model.PlayerTurnInfo
 import org.luxons.sevenwonders.model.api.ConnectedPlayer
 import org.luxons.sevenwonders.model.api.LobbyDTO
 import org.luxons.sevenwonders.model.api.SEVEN_WONDERS_WS_ENDPOINT
+import org.luxons.sevenwonders.model.api.actions.AddBotAction
 import org.luxons.sevenwonders.model.api.actions.ChooseNameAction
 import org.luxons.sevenwonders.model.api.actions.CreateGameAction
 import org.luxons.sevenwonders.model.api.actions.JoinGameAction
@@ -86,6 +87,10 @@ class SevenWondersSession(private val stompSession: StompSessionWithKxSerializat
         stompSession.sendEmptyMsg("/app/lobby/leave")
     }
 
+    suspend fun addBot(displayName: String) {
+        stompSession.convertAndSend("/app/lobby/addBot", AddBotAction(displayName), AddBotAction.serializer())
+    }
+
     suspend fun reorderPlayers(players: List<String>) {
         stompSession.convertAndSend("/app/lobby/reorderPlayers", ReorderPlayersAction(players), ReorderPlayersAction.serializer())
     }
@@ -133,7 +138,4 @@ class SevenWondersSession(private val stompSession: StompSessionWithKxSerializat
     suspend fun unprepareMove() {
         stompSession.sendEmptyMsg("/app/game/unprepareMove")
     }
-
-//    suspend fun watchGameEnd() {
-//    }
 }
diff --git a/sw-common-model/src/commonMain/kotlin/org/luxons/sevenwonders/model/api/actions/Actions.kt b/sw-common-model/src/commonMain/kotlin/org/luxons/sevenwonders/model/api/actions/Actions.kt
index 773e703f..a4467667 100644
--- a/sw-common-model/src/commonMain/kotlin/org/luxons/sevenwonders/model/api/actions/Actions.kt
+++ b/sw-common-model/src/commonMain/kotlin/org/luxons/sevenwonders/model/api/actions/Actions.kt
@@ -70,3 +70,14 @@ class UpdateSettingsAction(
      */
     val settings: CustomizableSettings
 )
+
+/**
+ * The action to add a bot to the game. Can only be called in the lobby by the owner of the game.
+ */
+@Serializable
+class AddBotAction(
+    /**
+     * The display name for the bot to add.
+     */
+    val botDisplayName: String
+)
diff --git a/sw-server/build.gradle.kts b/sw-server/build.gradle.kts
index 7d1ee0ae..66e70dbb 100644
--- a/sw-server/build.gradle.kts
+++ b/sw-server/build.gradle.kts
@@ -10,8 +10,10 @@ apply(plugin = "io.spring.dependency-management")
 dependencies {
     implementation(project(":sw-common-model"))
     implementation(project(":sw-engine"))
+    implementation(project(":sw-bot"))
     implementation(kotlin("stdlib-jdk8"))
     implementation(kotlin("reflect")) // required by Spring 5
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.6")
 
     implementation("org.springframework.boot:spring-boot-starter-websocket")
     implementation("org.springframework.boot:spring-boot-starter-security")
@@ -32,7 +34,6 @@ dependencies {
     testImplementation("org.springframework.boot:spring-boot-starter-test")
     testImplementation("org.hildan.jackstomp:jackstomp:2.0.0")
     testImplementation("com.fasterxml.jackson.module:jackson-module-kotlin")
-    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5")
 }
 
 // packages the frontend app within the jar
diff --git a/sw-server/src/main/kotlin/org/luxons/sevenwonders/server/controllers/LobbyController.kt b/sw-server/src/main/kotlin/org/luxons/sevenwonders/server/controllers/LobbyController.kt
index 403a4696..cdb636fb 100644
--- a/sw-server/src/main/kotlin/org/luxons/sevenwonders/server/controllers/LobbyController.kt
+++ b/sw-server/src/main/kotlin/org/luxons/sevenwonders/server/controllers/LobbyController.kt
@@ -1,6 +1,8 @@
 package org.luxons.sevenwonders.server.controllers
 
 import org.hildan.livedoc.core.annotations.Api
+import org.luxons.sevenwonders.bot.SevenWondersBot
+import org.luxons.sevenwonders.model.api.actions.AddBotAction
 import org.luxons.sevenwonders.model.api.actions.ReorderPlayersAction
 import org.luxons.sevenwonders.model.api.actions.UpdateSettingsAction
 import org.luxons.sevenwonders.model.hideHandsAndWaitForReadiness
@@ -16,6 +18,8 @@ import org.springframework.messaging.simp.SimpMessagingTemplate
 import org.springframework.stereotype.Controller
 import org.springframework.validation.annotation.Validated
 import java.security.Principal
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 
 /**
  * Handles actions in the game's lobby. The lobby is the place where players gather before a game.
@@ -78,6 +82,18 @@ class LobbyController @Autowired constructor(
         sendLobbyUpdateToPlayers(lobby)
     }
 
+    @MessageMapping("/lobby/addBot")
+    fun addBot(@Validated action: AddBotAction, principal: Principal) {
+        val lobby = principal.player.ownedLobby
+        val bot = SevenWondersBot(action.botDisplayName)
+        GlobalScope.launch {
+            bot.play("localhost:8000", lobby.id)
+        }
+
+        logger.info("Added bot {} to game '{}'", action.botDisplayName, lobby.name)
+        sendLobbyUpdateToPlayers(lobby)
+    }
+
     internal fun sendLobbyUpdateToPlayers(lobby: Lobby) {
         lobby.getPlayers().forEach {
             template.convertAndSendToUser(it.username, "/queue/lobby/updated", lobby.toDTO())
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/lobby/Lobby.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/lobby/Lobby.kt
index d015e2a2..2dc36ef9 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/lobby/Lobby.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/lobby/Lobby.kt
@@ -4,6 +4,7 @@ import com.palantir.blueprintjs.Intent
 import com.palantir.blueprintjs.bpButton
 import org.luxons.sevenwonders.model.api.LobbyDTO
 import org.luxons.sevenwonders.model.api.PlayerDTO
+import org.luxons.sevenwonders.ui.redux.RequestAddBot
 import org.luxons.sevenwonders.ui.redux.RequestLeaveLobby
 import org.luxons.sevenwonders.ui.redux.RequestStartGame
 import org.luxons.sevenwonders.ui.redux.connectStateAndDispatch
@@ -20,6 +21,7 @@ interface LobbyStateProps : RProps {
 
 interface LobbyDispatchProps : RProps {
     var startGame: () -> Unit
+    var addBot: (displayName: String) -> Unit
     var leaveLobby: () -> Unit
 }
 
@@ -39,6 +41,7 @@ class LobbyPresenter(props: LobbyProps) : RComponent<LobbyProps, RState>(props)
             radialPlayerList(currentGame.players, currentPlayer)
             if (currentPlayer.isGameOwner) {
                 startButton(currentGame, currentPlayer)
+                addBotButton()
             } else {
                 leaveButton()
             }
@@ -59,6 +62,25 @@ class LobbyPresenter(props: LobbyProps) : RComponent<LobbyProps, RState>(props)
         }
     }
 
+    private fun RBuilder.addBotButton() {
+        bpButton(
+            large = true,
+            intent = Intent.NONE,
+            icon = "plus",
+            rightIcon = "desktop",
+            title = "Add a bot to this game",
+            onClick = { addBot() }
+        ) {
+            +"ADD BOT"
+        }
+    }
+
+    private fun addBot() {
+        val name = listOf("Bob", "Jack", "John", "Boris", "HAL", "GLaDOS").random()
+//        val botName = "\uD83E\uDD16 $name"
+        props.addBot(name)
+    }
+
     private fun RBuilder.leaveButton() {
         bpButton(
             large = true,
@@ -82,6 +104,7 @@ private val lobby = connectStateAndDispatch<LobbyStateProps, LobbyDispatchProps,
     },
     mapDispatchToProps = { dispatch, _ ->
         startGame = { dispatch(RequestStartGame()) }
+        addBot = { name -> dispatch(RequestAddBot(name)) }
         leaveLobby = { dispatch(RequestLeaveLobby()) }
     }
 )
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/ApiActions.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/ApiActions.kt
index eef77585..300693a3 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/ApiActions.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/ApiActions.kt
@@ -10,6 +10,8 @@ data class RequestCreateGame(val gameName: String) : RAction
 
 data class RequestJoinGame(val gameId: Long) : RAction
 
+data class RequestAddBot(val botDisplayName: String) : RAction
+
 data class RequestReorderPlayers(val orderedPlayers: List<String>) : RAction
 
 data class RequestUpdateSettings(val settings: CustomizableSettings) : RAction
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/sagas/LobbySagas.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/sagas/LobbySagas.kt
index e2bf82c5..d6d41881 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/sagas/LobbySagas.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/sagas/LobbySagas.kt
@@ -5,6 +5,7 @@ import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.luxons.sevenwonders.client.SevenWondersSession
 import org.luxons.sevenwonders.ui.redux.EnterGameAction
+import org.luxons.sevenwonders.ui.redux.RequestAddBot
 import org.luxons.sevenwonders.ui.redux.RequestLeaveLobby
 import org.luxons.sevenwonders.ui.redux.RequestStartGame
 import org.luxons.sevenwonders.ui.redux.UpdateLobbyAction
@@ -19,6 +20,9 @@ suspend fun SwSagaContext.lobbySaga(session: SevenWondersSession) {
             .map { UpdateLobbyAction(it) }
             .dispatchAllIn(this)
 
+        launch {
+            onEach<RequestAddBot> { session.addBot(it.botDisplayName) }
+        }
         val startGameJob = launch { awaitStartGame(session) }
 
         awaitFirst(