From b76bca9c572284a89fd536176fbc5bb767115ac2 Mon Sep 17 00:00:00 2001
From: Moritz Ruth <dev@moritzruth.de>
Date: Sat, 22 Apr 2023 22:11:53 +0200
Subject: [PATCH] commit #4

---
 package.json                                  |   1 +
 pnpm-lock.yaml                                |   7 +
 schema.prisma                                 |  31 +---
 src/App.vue                                   |  30 ++--
 src/auth.ts                                   |  13 +-
 src/clientGame.ts                             |  45 ++++--
 src/components/GameEndModal.vue               |   2 +-
 src/components/JoinScreen.vue                 |  97 ++++++++++++
 src/components/LoginScreen.vue                |  49 ++++++
 src/components/PreStartScreen.vue             |  26 ++++
 src/components/input/TextInput.vue            |   2 +-
 src/server/{activeGame.ts => game.ts}         | 140 ++++++++++++------
 src/server/main.ts                            |  12 +-
 src/server/seed.ts                            |  27 ----
 src/server/trpc/base.ts                       |  24 ++-
 src/server/trpc/game.ts                       |  19 ++-
 src/server/trpc/index.ts                      |  87 ++++++++---
 .../game/{gameActions.ts => actions.ts}       |  11 +-
 src/shared/game/events.ts                     |   6 +
 src/shared/game/state.ts                      |  15 +-
 src/shared/lobbyCode.ts                       |   1 +
 src/trpc.ts                                   |   1 +
 22 files changed, 464 insertions(+), 182 deletions(-)
 create mode 100644 src/components/JoinScreen.vue
 create mode 100644 src/components/LoginScreen.vue
 create mode 100644 src/components/PreStartScreen.vue
 rename src/server/{activeGame.ts => game.ts} (51%)
 delete mode 100644 src/server/seed.ts
 rename src/shared/game/{gameActions.ts => actions.ts} (91%)
 create mode 100644 src/shared/game/events.ts
 create mode 100644 src/shared/lobbyCode.ts

diff --git a/package.json b/package.json
index 3161d45..12cc769 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
     "bufferutil": "^4.0.7",
     "cookie": "^0.5.0",
     "cookie-parser": "^1.4.6",
+    "date-fns": "^2.29.3",
     "eventemitter3": "^5.0.0",
     "express": "^4.18.2",
     "immer": "^10.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index be836c5..537306a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -23,6 +23,7 @@ importers:
       bufferutil: ^4.0.7
       cookie: ^0.5.0
       cookie-parser: ^1.4.6
+      date-fns: ^2.29.3
       eventemitter3: ^5.0.0
       express: ^4.18.2
       immer: ^10.0.1
@@ -56,6 +57,7 @@ importers:
       bufferutil: 4.0.7
       cookie: 0.5.0
       cookie-parser: 1.4.6
+      date-fns: 2.29.3
       eventemitter3: 5.0.0
       express: 4.18.2
       immer: 10.0.1
@@ -1320,6 +1322,11 @@ packages:
   /csstype/2.6.21:
     resolution: {integrity: sha512-Z1PhmomIfypOpoMjRQB70jfvy/wxT50qW08YXO5lMIJkrdq4yOTR+AW7FqutScmB9NkLwxo+jU+kZLbofZZq/w==}
 
+  /date-fns/2.29.3:
+    resolution: {integrity: sha512-dDCnyH2WnnKusqvZZ6+jA1O51Ibt8ZMRNkDZdyAyK4YfbDwa/cEmuztzG5pk6hqlp9aSBPYcjOlktquahGwGeA==}
+    engines: {node: '>=0.11'}
+    dev: false
+
   /debug/2.6.9:
     resolution: {integrity: sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==}
     peerDependencies:
diff --git a/schema.prisma b/schema.prisma
index 76d1e2b..06acf76 100644
--- a/schema.prisma
+++ b/schema.prisma
@@ -7,32 +7,9 @@ generator client {
   provider = "prisma-client-js"
 }
 
-model Game {
-  id                String  @id @default(cuid())
-  lobbyCodeIfActive String? @unique
-
-  actions GameAction[]
-}
-
 model User {
-  id    String @id @default(cuid())
-  name  String
-  token String @unique
-
-  gameActions GameAction[]
-}
-
-model GameAction {
-  id String @id @default(cuid())
-
-  index  Int
-  gameId String
-  game   Game   @relation(references: [id], fields: [gameId], onDelete: Cascade)
-
-  playerId String? // null → the server or a deleted user
-  player   User?   @relation(references: [id], fields: [playerId], onDelete: SetNull)
-
-  data String
-
-  @@unique([gameId, index])
+  id               String   @id @default(cuid())
+  name             String
+  token            String   @unique
+  lastActivityDate DateTime @default(now())
 }
diff --git a/src/App.vue b/src/App.vue
index 529a6d1..4a50731 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -2,13 +2,13 @@
 	<div class="bg-gray-900 h-100vh w-100vw overflow-y-auto text-white p-10">
 		<div :class="$style.noise"/>
 		<div :class="$style.vignette"/>
-		<div class="relative max-w-1200px mx-auto">
-			<button v-if="!game.isActive" @click="game.join('')">
-				Join
-			</button>
-			<button v-else-if="game.state.phase === 'pre-start'" @click="game.start()">
-				Start
-			</button>
+		<div class="relative max-w-1200px h-full mx-auto">
+			<div v-if="isLoading" class="flex flex-col justify-center items-center text-4xl">
+				<span>Loading…</span>
+			</div>
+			<LoginScreen v-else-if="auth.authenticatedUser === null"/>
+			<JoinScreen v-else-if="!game.isActive"/>
+			<PreStartScreen v-else-if="game.state.phase === 'pre-start'"/>
 			<Game v-else/>
 		</div>
 	</div>
@@ -67,24 +67,20 @@
 </style>
 
 <script setup lang="ts">
-	import { trpcClient } from "./trpc"
 	import { ref } from "vue"
 	import { useGame } from "./clientGame"
 	import Game from "./components/Game.vue"
 	import { useAuth } from "./auth"
+	import JoinScreen from "./components/JoinScreen.vue"
+	import LoginScreen from "./components/LoginScreen.vue"
+	import PreStartScreen from "./components/PreStartScreen.vue"
 
 	const isLoading = ref(true)
 	const auth = useAuth()
 
-	trpcClient.getSelf.query()
-		.then(({ user }) => {
-			if (user === null) return trpcClient.loginAsGuest.mutate()
-			auth.authenticatedUser = user
-			return Promise.resolve()
-		})
-		.then(() => {
-			isLoading.value = false
-		})
+	auth.fetchSelf().then(() => {
+		isLoading.value = false
+	})
 
 	const game = useGame()
 </script>
diff --git a/src/auth.ts b/src/auth.ts
index da067c7..a5c147b 100644
--- a/src/auth.ts
+++ b/src/auth.ts
@@ -1,5 +1,6 @@
 import { defineStore } from "pinia"
 import { computed, ref } from "vue"
+import { trpcClient } from "./trpc"
 
 export const useAuth = defineStore("auth", () => {
 	const authenticatedUser = ref<{ id: string; name: string } | null>(null)
@@ -7,6 +8,16 @@ export const useAuth = defineStore("auth", () => {
 
 	return {
 		authenticatedUser,
-		requiredUser
+		requiredUser,
+		async fetchSelf() {
+			authenticatedUser.value = (await trpcClient.getSelf.query()).user
+		},
+		async login(username: string) {
+			const { id } = await trpcClient.login.mutate({ name: username })
+			authenticatedUser.value = {
+				id,
+				name: username
+			}
+		}
 	}
 })
\ No newline at end of file
diff --git a/src/clientGame.ts b/src/clientGame.ts
index def0b49..6c903a5 100644
--- a/src/clientGame.ts
+++ b/src/clientGame.ts
@@ -1,9 +1,11 @@
 import { defineStore } from "pinia"
 import { EventBusKey, useEventBus } from "@vueuse/core"
-import type { GameAction } from "./shared/game/gameActions"
-import { reactive, readonly, ref } from "vue"
+import type { GameAction } from "./shared/game/actions"
+import { computed, reactive, readonly, ref } from "vue"
 import { GameState, getUninitializedGameState, produceNewState } from "./shared/game/state"
 import { trpcClient } from "./trpc"
+import { useAuth } from "./auth"
+import { read } from "fs"
 
 const gameActionsBusKey = Symbol() as EventBusKey<GameAction>
 const useGameActionsBus = () => useEventBus(gameActionsBusKey)
@@ -18,10 +20,12 @@ export const useGameActionNotification = (listener: (action: GameAction) => unkn
 }
 
 export const useGame = defineStore("game", () => {
-	const isActive = ref(false)
+	const lobbyCode = ref<string | null>(null)
 	const state = ref<GameState>(getUninitializedGameState())
 	const actions = reactive<GameAction[]>([])
 
+	const auth = useAuth()
+
 	const actionsBus = useGameActionsBus()
 	actionsBus.on(action => {
 		actions.push(action)
@@ -30,18 +34,37 @@ export const useGame = defineStore("game", () => {
 	})
 
 	return {
-		isActive: readonly(isActive),
+		lobbyCode: readonly(lobbyCode),
+		isActive: computed(() => lobbyCode.value !== null),
+		isOwnGame: computed(() => state.value.players.findIndex(p => p.id === (auth.authenticatedUser?.id ?? "")) === 0),
 		state: readonly(state),
 		actions: readonly(actions),
 		join(code: string) {
-			trpcClient.join.subscribe({ code: "game" }, {
-				onData: actionsBus.emit
+			return new Promise<void>((resolve, reject) => {
+				trpcClient.join.subscribe({ lobbyCode: code }, {
+					onStarted: () => {
+						lobbyCode.value = code
+						resolve()
+					},
+					onData: event => {
+						switch (event.type) {
+							case "action":
+								actionsBus.emit(event.action)
+								break
+						}
+					},
+					onError: error => {
+						console.error("🔴", error)
+						reject(error)
+					}
+				})
 			})
-
-			isActive.value = true
 		},
-		start: () => trpcClient.game.start.mutate(),
-		hit: () => trpcClient.game.hit.mutate(),
-		stay: () => trpcClient.game.stay.mutate()
+		async create() {
+			return await trpcClient.createGame.mutate()
+		},
+		start: () => trpcClient.game.start.mutate({ lobbyCode: lobbyCode.value! }),
+		hit: () => trpcClient.game.hit.mutate({ lobbyCode: lobbyCode.value! }),
+		stay: () => trpcClient.game.stay.mutate({ lobbyCode: lobbyCode.value! })
 	}
 })
\ No newline at end of file
diff --git a/src/components/GameEndModal.vue b/src/components/GameEndModal.vue
index 5e13bea..9714a33 100644
--- a/src/components/GameEndModal.vue
+++ b/src/components/GameEndModal.vue
@@ -14,7 +14,7 @@
 					<span class="text-green-500">{{ getNumberCardsSum(singleWinner.numberCards) }}</span>
 					point{{ getNumberCardsSum(singleWinner.numberCards) === 1 ? "" : "s" }}.
 				</template>
-				<template>
+				<template v-else>
 					between {{ naturallyJoinEnumeration(game.state.winnerIds.map(id => game.state.players.find(p => p.id === id).name)) }}
 				</template>
 			</div>
diff --git a/src/components/JoinScreen.vue b/src/components/JoinScreen.vue
new file mode 100644
index 0000000..9da50a0
--- /dev/null
+++ b/src/components/JoinScreen.vue
@@ -0,0 +1,97 @@
+<template>
+	<div class="flex flex-col h-full justify-center items-center gap-8 text-8xl">
+		<input
+			v-model="lobbyCodeInput"
+			class="uppercase bg-transparent text-white text-center font-fat tracking-wider focus:outline-none pb-2 rounded-lg transition"
+			:class="isUnknown ? 'bg-red-800' : ''"
+			:maxlength="LOBBY_CODE_LENGTH"
+			:placeholder="'X'.repeat(LOBBY_CODE_LENGTH)"
+			:style="{ width: `${LOBBY_CODE_LENGTH * 0.95}em` }"
+			@keypress="onKeypress"
+		/>
+		<button
+			class="uppercase font-bold text-4xl border border-white rounded-md bg-white bg-opacity-0 transition px-10 py-4"
+			:class="$style.button"
+			:disabled="lobbyCodeInput.length !== LOBBY_CODE_LENGTH"
+			@click="join()"
+		>
+			Join
+		</button>
+		<button
+			class="font-bold text-2xl border border-white rounded-md bg-white bg-opacity-0 transition px-6 py-2"
+			:class="$style.button"
+			@click="create()"
+		>
+			Create game
+		</button>
+	</div>
+</template>
+
+<style module lang="scss">
+	.button {
+		&:disabled {
+			cursor: not-allowed;
+		}
+
+		&:not(:disabled) {
+			@apply hover:bg-opacity-20;
+		}
+	}
+</style>
+
+<script setup lang="ts">
+	import { computed, ref, watch, watchEffect } from "vue"
+	import { useGame } from "../clientGame"
+	import { LOBBY_CODE_LENGTH } from "../shared/lobbyCode"
+	import { useBrowserLocation } from "@vueuse/core"
+
+	const location = useBrowserLocation()
+	const REGEX = new RegExp("^[a-zA-Z]*$")
+
+	const game = useGame()
+	const lobbyCodeInput = ref("")
+	const normalizedLobbyCode = computed(() => lobbyCodeInput.value.toUpperCase())
+	const isLoading = ref(false)
+	const isUnknown = ref(false)
+
+	watchEffect(() => {
+		const hash = (location.value.hash ?? "").slice(1)
+		if (REGEX.test(hash) && hash.length === LOBBY_CODE_LENGTH) {
+			lobbyCodeInput.value = hash
+		}
+	})
+
+	watch(lobbyCodeInput, () => {
+		isUnknown.value = false
+	})
+
+	function onKeypress(e: KeyboardEvent) {
+		if (e.key.length !== 1 || !REGEX.test(e.key)) {
+			e.preventDefault()
+			e.stopImmediatePropagation()
+		}
+	}
+
+	async function join() {
+		if (isLoading.value) return
+		isLoading.value = true
+
+		try {
+			await game.join(normalizedLobbyCode.value)
+			window.location.hash = normalizedLobbyCode.value
+		} catch (e: unknown) {
+			isUnknown.value = true
+		}
+
+		isLoading.value = false
+	}
+
+	async function create() {
+		if (isLoading.value) return
+		isLoading.value = true
+		const { lobbyCode } = await game.create()
+		lobbyCodeInput.value = lobbyCode
+		isLoading.value = false
+		await join()
+	}
+</script>
\ No newline at end of file
diff --git a/src/components/LoginScreen.vue b/src/components/LoginScreen.vue
new file mode 100644
index 0000000..35d105c
--- /dev/null
+++ b/src/components/LoginScreen.vue
@@ -0,0 +1,49 @@
+<template>
+	<div class="flex flex-col h-full justify-center items-center gap-8 text-8xl">
+		<input
+			v-model="usernameInput"
+			class="bg-transparent text-white text-center font-fat focus:outline-none"
+			placeholder="Username"
+			maxlength="20"
+		/>
+		<button
+			class="uppercase font-bold text-4xl border border-white rounded-md bg-white bg-opacity-0 transition px-10 py-4"
+			:class="$style.button"
+			:disabled="usernameInput.length <= 0 || usernameInput.length > 20"
+			@click="submit()"
+		>
+			Continue
+		</button>
+	</div>
+</template>
+
+<style module lang="scss">
+	.button {
+		&:disabled {
+			cursor: not-allowed;
+		}
+
+		&:not(:disabled) {
+			@apply hover:bg-opacity-20;
+		}
+	}
+</style>
+
+<script setup lang="ts">
+	import { ref, watchEffect } from "vue"
+	import { useGame } from "../clientGame"
+	import { LOBBY_CODE_LENGTH } from "../shared/lobbyCode"
+	import { useBrowserLocation } from "@vueuse/core"
+	import { useAuth } from "../auth"
+
+	const auth = useAuth()
+	const usernameInput = ref("")
+	const isLoading = ref(false)
+
+	function submit() {
+		if (isLoading.value) return
+		isLoading.value = true
+		auth.login(usernameInput.value)
+		isLoading.value = false
+	}
+</script>
\ No newline at end of file
diff --git a/src/components/PreStartScreen.vue b/src/components/PreStartScreen.vue
new file mode 100644
index 0000000..33035f2
--- /dev/null
+++ b/src/components/PreStartScreen.vue
@@ -0,0 +1,26 @@
+<template>
+	<div class="flex flex-col h-full items-center pt-10 gap-8 text-8xl">
+		<div class="font-fat text-5xl">Code: <span class="select-all">{{ game.lobbyCode }}</span></div>
+		<div class="font-bold text-3xl">Players: {{ naturallyJoinEnumeration(game.state.players.map(p => p.name)) }}</div>
+		<BigButton
+			v-if="game.isOwnGame"
+			class="bg-gradient-to-br from-gray-600 to-gray-800"
+			:disabled="game.state.players.length < 2"
+			@click="game.start()"
+		>
+			Start
+		</BigButton>
+	</div>
+</template>
+
+<style module lang="scss">
+
+</style>
+
+<script setup lang="ts">
+	import { useGame } from "../clientGame"
+	import { naturallyJoinEnumeration } from "../shared/util"
+	import BigButton from "./BigButton.vue"
+
+	const game = useGame()
+</script>
\ No newline at end of file
diff --git a/src/components/input/TextInput.vue b/src/components/input/TextInput.vue
index 6c476a8..a55b45b 100644
--- a/src/components/input/TextInput.vue
+++ b/src/components/input/TextInput.vue
@@ -1,5 +1,5 @@
 <template>
-  <TextualInput v-model="value"/>
+  <TextualInput :class="$style.root" v-model="value"/>
 </template>
 
 <style module lang="scss">
diff --git a/src/server/activeGame.ts b/src/server/game.ts
similarity index 51%
rename from src/server/activeGame.ts
rename to src/server/game.ts
index 561a825..a1ca39b 100644
--- a/src/server/activeGame.ts
+++ b/src/server/game.ts
@@ -1,23 +1,25 @@
 import EventEmitter from "eventemitter3"
-import type { GameAction } from "../shared/game/gameActions"
+import type { GameAction } from "../shared/game/actions"
 import { prismaClient } from "./prisma"
 import { GameState, getNumberCardsSum, getUninitializedGameState, produceNewState } from "../shared/game/state"
 import type { RemoveKey } from "../shared/RemoveKey"
-import { mapValues, random } from "lodash-es"
+import { random } from "lodash-es"
 import type { DeepReadonly } from "vue"
+import { customAlphabet as createNanoIdWithCustomAlphabet } from "nanoid/non-secure"
+import { LOBBY_CODE_LENGTH } from "../shared/lobbyCode"
 
-const activeGamesByCode = new Map<string, ActiveGame>()
+const generateLobbyCode = createNanoIdWithCustomAlphabet("ABCDEFGHKMNPQRSTUVWXYZ", LOBBY_CODE_LENGTH)
 
-export function getActiveGameByCode(code: string): ActiveGame | null {
-	return activeGamesByCode.get(code) ?? null
+const gamesByLobbyCode = new Map<string, Game>()
+
+export function getGameByLobbyCode(code: string): Game | null {
+	return gamesByLobbyCode.get(code.toUpperCase()) ?? null
 }
 
-export function getActiveGameOfPlayer(userId: string): ActiveGame | null {
-	for (const game of activeGamesByCode.values()) {
-		if (game.lobbyPlayerIds.has(userId)) return game
-	}
-
-	return null
+export function createGame() {
+	const game = new Game()
+	gamesByLobbyCode.set(game.lobbyCode, game)
+	return game
 }
 
 const NO_REDACTION = Symbol()
@@ -44,9 +46,9 @@ interface Events {
 	destroyed: []
 }
 
-export class ActiveGame extends EventEmitter<Events> {
-	private nextIndex = 0
-
+export class Game extends EventEmitter<Events> {
+	lobbyCode = generateLobbyCode()
+	
 	/**
 	 * @deprecated
 	 */
@@ -55,14 +57,20 @@ export class ActiveGame extends EventEmitter<Events> {
 		return this._state
 	}
 
-	lobbyPlayerIds = new Set<string>()
+	private lobbyPlayerIds = new Set<string>()
+	private actions: GameAction[] = []
 
-	constructor(public id: string) {
+	private get nextIndex() {
+		if (this.actions.length === 0) return 0
+		return this.actions[this.actions.length - 1].index + 1
+	}
+
+	constructor() {
 		super()
 	}
 
-	async start() {
-		const players = await prismaClient.user.findMany({
+	private async getPlayers() {
+		return await prismaClient.user.findMany({
 			where: {
 				id: {
 					in: [...this.lobbyPlayerIds]
@@ -73,43 +81,70 @@ export class ActiveGame extends EventEmitter<Events> {
 				name: true
 			}
 		})
+	}
 
-		await this.addAction({
+	addPlayer(id: string, name: string) {
+		if (this.lobbyPlayerIds.has(id)) return
+		if (this.lobbyPlayerIds.size >= 3) throw new Error("The game is full.")
+		this.lobbyPlayerIds.add(id)
+		this.addAction({
+			type: "join",
+			initiatingPlayerId: id,
+			name
+		})
+	}
+
+	removePlayerAndDestroy(userId: string) {
+		this.lobbyPlayerIds.delete(userId)
+		
+		this.addAction({
+			type: "leave",
+			initiatingPlayerId: userId
+		})
+
+		this.destroy()
+	}
+
+	async start() {
+		const players = await this.getPlayers()
+		if (players.length < 2) throw new Error("At least two players are required for starting the game")
+
+		this.addAction({
 			type: "start",
 			targetSum: 21,
 			players
 		})
 
 		for (const player of players) {
-			await this.dealNumberTo(player.id, true)
+			this.dealNumberTo(player.id, true)
 		}
 	}
 
-	async hit() {
+	hit() {
 		const playerId = this.state.activePlayerId
 
-		await this.addAction({
+		this.addAction({
 			type: "hit",
 			initiatingPlayerId: playerId
 		})
 
-		await this.dealNumberTo(playerId, false)
+		this.dealNumberTo(playerId, false)
 	}
 
-	async stay() {
+	stay() {
 		const playerId = this.state.activePlayerId
 
-		await this.addAction({
+		this.addAction({
 			type: "stay",
 			initiatingPlayerId: playerId
 		})
 
 		if (this.state.players.every(p => p.stayed)) {
-			await this.end()
+			this.end()
 		}
 	}
 
-	async end() {
+	end() {
 		let closestSafeValue = 0
 		let closestSafePlayerIds: string[] = []
 		let closestBustValue = Number.POSITIVE_INFINITY
@@ -134,17 +169,21 @@ export class ActiveGame extends EventEmitter<Events> {
 
 		const winnerIds = closestSafePlayerIds.length !== 0 ? closestSafePlayerIds : closestBustPlayerIds
 
-		await this.addAction({
+		this.addAction({
 			type: "end",
 			winnerIds,
 			cardsByPlayerId: Object.fromEntries(this.state.players.map(player => [player.id, player.numberCards.map(c => c.number)]))
 		})
 	}
 
-	private async dealNumberTo(playerId: string, isCovert: boolean) {
+	sendAllOldActionsTo(receiverId: string) {
+		this.actions.forEach(action => this.sendActionTo(action, receiverId))
+	}
+
+	private dealNumberTo(playerId: string, isCovert: boolean) {
 		const number = this.state.numberCardsStack[random(0, this.state.numberCardsStack.length - 1)]
 
-		await this.addAction({
+		this.addAction({
 			type: "deal-number",
 			number,
 			toPlayerId: playerId,
@@ -152,42 +191,45 @@ export class ActiveGame extends EventEmitter<Events> {
 		})
 	}
 
-	private async addAction<T extends RemoveKey<GameAction, "index">>(action: T): Promise<T & { index: number }> {
+	private addAction<T extends RemoveKey<GameAction, "index">>(action: T): T & { index: number } {
 		const fullAction = {
 			...action,
-			index: this.nextIndex++
+			index: this.nextIndex
 		} as T & { index: number }
 
-		await prismaClient.gameAction.create({
-			data: {
-				gameId: this.id,
-				playerId: action.initiatingPlayerId,
-				index: fullAction.index,
-				data: JSON.stringify(fullAction)
-			}
-		})
+		this.actions.push(fullAction)
+		this.applyActionToState(fullAction)
+		
+		this.sendAction(fullAction)
 
-		// noinspection JSDeprecatedSymbols
-		this._state = produceNewState(this._state, fullAction)
+		return fullAction
+	}
 
+	private sendAction(action: GameAction) {
 		for (const player of this.state.players) {
-			const redactedAction = redactGameAction(fullAction, player.id)
+			const redactedAction = redactGameAction(action, player.id)
 
 			if (redactedAction === NO_REDACTION) {
-				this.emit("broadcast_action", fullAction)
+				this.emit("broadcast_action", action)
 				break
 			} else {
 				this.emit("private_action", player.id, redactedAction)
 			}
 		}
+	}
 
-		return fullAction
+	private sendActionTo(action: GameAction, receiverId: string) {
+		const redactedAction = redactGameAction(action, receiverId)
+		this.emit("private_action", receiverId, redactedAction === NO_REDACTION ? action : redactedAction)
+	}
+
+	private applyActionToState(action: GameAction) {
+		// noinspection JSDeprecatedSymbols
+		this._state = produceNewState(this._state, action)
 	}
 
 	private destroy() {
-		activeGamesByCode.delete(this.id)
+		gamesByLobbyCode.delete(this.lobbyCode)
 		this.emit("destroyed")
 	}
-}
-
-activeGamesByCode.set("game", new ActiveGame("game"))
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/server/main.ts b/src/server/main.ts
index c989d89..53b8630 100644
--- a/src/server/main.ts
+++ b/src/server/main.ts
@@ -4,11 +4,12 @@ import { WebSocketServer } from "ws"
 import { appRouter } from "./trpc"
 import { createExpressMiddleware as createTrpcMiddleware } from "@trpc/server/adapters/express"
 import { applyWSSHandler } from "@trpc/server/adapters/ws"
-import { seedDatabase } from "./seed"
 import { createContext } from "./trpc/base"
 import cookieParser from "cookie-parser"
 import { parse as parseCookie } from "cookie"
 import { isDev } from "./isDev"
+import { prismaClient } from "./prisma"
+import * as dateFns from "date-fns"
 
 const expressApp = createExpressApp()
 expressApp.use(cookieParser())
@@ -18,7 +19,14 @@ expressApp.use("/trpc", createTrpcMiddleware({
 	createContext: ({ req, res }) => createContext(req.cookies.token ?? null, res),
 }))
 
-await seedDatabase()
+await prismaClient.user.deleteMany({
+	where: {
+		lastActivityDate: {
+			lte: dateFns.subMonths(new Date(), 1)
+		}
+	}
+})
+
 const { server } = await listen(expressApp, { isProd: !isDev, autoClose: false })
 
 const wss = new WebSocketServer({ server, path: "/ws" })
diff --git a/src/server/seed.ts b/src/server/seed.ts
deleted file mode 100644
index 4df2b97..0000000
--- a/src/server/seed.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-import { prismaClient } from "./prisma"
-
-export async function seedDatabase() {
-	if (await prismaClient.user.count() === 0) {
-		await prismaClient.user.create({
-			data: {
-				name: "Guest 1",
-				token: "guest1"
-			}
-		})
-
-		await prismaClient.user.create({
-			data: {
-				name: "Guest 2",
-				token: "guest2"
-			}
-		})
-	}
-
-	await prismaClient.game.deleteMany({})
-	await prismaClient.game.create({
-		data: {
-			id: "game",
-			lobbyCodeIfActive: "game"
-		}
-	})
-}
\ No newline at end of file
diff --git a/src/server/trpc/base.ts b/src/server/trpc/base.ts
index bfba465..2d65b94 100644
--- a/src/server/trpc/base.ts
+++ b/src/server/trpc/base.ts
@@ -3,20 +3,28 @@ import { prismaClient } from "../prisma"
 import type { Response } from "express"
 
 export interface Context {
-	userId: string | null
+	user: {
+		id: string
+		name: string
+	} | null
 	res?: Response
 }
 
 export async function createContext(authenticationToken: string | null, res: Response | undefined): Promise<Context> {
-	let userId = null
+	let user: Context["user"] = null
 
 	if (authenticationToken !== null && authenticationToken.length > 0) {
-		const user = await prismaClient.user.findUnique({ where: { token: authenticationToken }, select: { id: true } })
-		if (user !== null) userId = user.id
+		user = await prismaClient.user.findUnique({
+			where: { token: authenticationToken },
+			select: {
+				id: true,
+				name: true
+			}
+		})
 	}
 
 	return {
-		userId,
+		user,
 		res
 	}
 }
@@ -24,13 +32,13 @@ export async function createContext(authenticationToken: string | null, res: Res
 export const t = initTRPC.context<Context>().create()
 
 export const requireAuthentication = t.middleware(({ ctx, next }) => {
-	let userId = ctx.userId
-	if (userId === null) throw new TRPCError({ code: "UNAUTHORIZED" })
+	let user = ctx.user
+	if (user === null) throw new TRPCError({ code: "UNAUTHORIZED" })
 
 	return next({
 		ctx: {
 			...ctx,
-			userId
+			user
 		}
 	})
 })
\ No newline at end of file
diff --git a/src/server/trpc/game.ts b/src/server/trpc/game.ts
index fb087ca..f5e2e68 100644
--- a/src/server/trpc/game.ts
+++ b/src/server/trpc/game.ts
@@ -1,13 +1,17 @@
 import { requireAuthentication, t } from "./base"
-import { getActiveGameOfPlayer } from "../activeGame"
 import { getNumberCardsSum } from "../../shared/game/state"
+import { z } from "zod"
+import { getGameByLobbyCode } from "../game"
 
 const gameProcedure = t.procedure
 	.use(requireAuthentication)
-	.use(t.middleware(async ({ ctx, next }) => {
-		const game = getActiveGameOfPlayer(ctx.userId!)
+	.input(z.object({
+		lobbyCode: z.string()
+	}))
+	.use(t.middleware(async ({ input, ctx, next }) => {
+		const game = getGameByLobbyCode((input as { lobbyCode: string }).lobbyCode)
 
-		if (game === null) throw new Error("The player is not in an active game")
+		if (game === null) throw new Error("The game does not exist or is not active")
 		return await next({
 			ctx: {
 				game
@@ -19,13 +23,14 @@ export const gameRouter = t.router({
 	start: gameProcedure
 		.mutation(async ({ ctx }) => {
 			if (ctx.game.state.phase !== "pre-start") throw new Error(`Cannot start the game in this phase: ${ctx.game.state.phase}`)
+			if (ctx.game.state.players.findIndex(p => p.id === ctx.user.id) !== 0) throw new Error("Only the creator can start the game")
 			ctx.game.start()
 		}),
 
 	hit: gameProcedure
 		.mutation(async ({ ctx }) => {
-			if (ctx.game.state.activePlayerId !== ctx.userId) throw new Error("It is not the player’s turn")
-			if (getNumberCardsSum(ctx.game.state.players.find(p => p.id === ctx.userId)!.numberCards) > ctx.game.state.targetSum)
+			if (ctx.game.state.activePlayerId !== ctx.user.id) throw new Error("It is not the player’s turn")
+			if (getNumberCardsSum(ctx.game.state.players.find(p => p.id === ctx.user.id)!.numberCards) > ctx.game.state.targetSum)
 				throw new Error("The player cannot hit when bust")
 
 			await ctx.game.hit()
@@ -33,7 +38,7 @@ export const gameRouter = t.router({
 
 	stay: gameProcedure
 		.mutation(async ({ ctx }) => {
-			if (ctx.game.state.activePlayerId !== ctx.userId) throw new Error("It is not the player’s turn")
+			if (ctx.game.state.activePlayerId !== ctx.user.id) throw new Error("It is not the player’s turn")
 			await ctx.game.stay()
 		})
 })
\ No newline at end of file
diff --git a/src/server/trpc/index.ts b/src/server/trpc/index.ts
index 1bc2598..4b55d44 100644
--- a/src/server/trpc/index.ts
+++ b/src/server/trpc/index.ts
@@ -2,62 +2,107 @@ import { requireAuthentication, t } from "./base"
 import { prismaClient } from "../prisma"
 import z from "zod"
 import { observable } from "@trpc/server/observable"
-import type { GameAction } from "../../shared/game/gameActions"
+import type { GameAction } from "../../shared/game/actions"
 import { isDev } from "../isDev"
-import { getActiveGameByCode } from "../activeGame"
 import { gameRouter } from "./game"
-
-let lastGuestWasOne = false
+import { nanoid } from "nanoid/async"
+import { createGame, getGameByLobbyCode } from "../game"
+import type { GameEvent } from "../../shared/game/events"
 
 export const appRouter = t.router({
 	game: gameRouter,
 
-	loginAsGuest: t.procedure
-		.mutation(async ({ ctx }) => {
-			let token = lastGuestWasOne ? "guest1" : "guest2"
-			lastGuestWasOne = !lastGuestWasOne
+	login: t.procedure
+		.input(z.object({
+			name: z.string().min(1).max(20)
+		}))
+		.mutation(async ({ input, ctx }) => {
+			if (ctx.user !== null) await prismaClient.user.delete({ where: { id: ctx.user.id } })
+
+			const token = await nanoid(60)
+			const user = await prismaClient.user.create({
+				data: {
+					name: input.name,
+					token
+				},
+				select: {
+					id: true
+				}
+			})
+
 			ctx.res!.cookie("token", token, {
 				maxAge: 60 * 60 * 24 * 365,
 				httpOnly: true,
 				secure: !isDev,
 				sameSite: "strict"
 			})
+
+			return {
+				id: user.id
+			}
 		}),
 
 	getSelf: t.procedure
 		.query(async ({ ctx }) => {
-			if (ctx.userId === null) return { user: null }
+			if (ctx.user === null) return { user: null }
+
+			await prismaClient.user.update({
+				where: { id: ctx.user.id },
+				data: {
+					lastActivityDate: new Date()
+				}
+			})
 
 			return {
-				user: await prismaClient.user.findUnique({ where: { id: ctx.userId } })
+				user: await prismaClient.user.findUnique({
+					where: { id: ctx.user.id },
+					select: {
+						id: true,
+						name: true
+					}
+				})
+			}
+		}),
+
+	createGame: t.procedure
+		.use(requireAuthentication)
+		.mutation(async ({}) => {
+			const game = createGame()
+
+			return {
+				lobbyCode: game.lobbyCode
 			}
 		}),
 
 	join: t.procedure
 		.use(requireAuthentication)
 		.input(z.object({
-			code: z.string().nonempty()
+			lobbyCode: z.string().nonempty()
 		}))
-		.subscription(({ input, ctx }) => {
-			const game = getActiveGameByCode(input.code)
-			if (game === null) throw new Error("There is no game with this code")
+		.subscription(async ({ input, ctx }) => {
+			const game = await getGameByLobbyCode(input.lobbyCode)
+			if (game === null) throw new Error("There is no game with this code.")
 
-			game.lobbyPlayerIds.add(ctx.userId)
+			await game.addPlayer(ctx.user.id, ctx.user.name)
 			
-			return observable<GameAction>(emit => {
-				const handleBroadcastAction = (action: GameAction) => emit.next(action)
-				
+			return observable<GameEvent>(emit => {
+				const handleBroadcastAction = (action: GameAction) => emit.next({ type: "action", action })
+				const handleDestroyed = () => setTimeout(() => emit.complete(), 500)
+
 				const handlePrivateAction = (playerId: string, action: GameAction) => {
-					if (playerId === ctx.userId) emit.next(action)
+					if (playerId === ctx.user.id) emit.next({ type: "action", action })
 				}
 
 				game.on("broadcast_action", handleBroadcastAction)
 				game.on("private_action", handlePrivateAction)
-				
+				game.on("destroyed", handleDestroyed)
+
+				game.sendAllOldActionsTo(ctx.user.id)
+
 				return () => {
-					game.lobbyPlayerIds.delete(ctx.userId)
 					game.off("broadcast_action", handleBroadcastAction)
 					game.off("private_action", handlePrivateAction)
+					game.off("destroyed", handleDestroyed)
 				}
 			})
 		})
diff --git a/src/shared/game/gameActions.ts b/src/shared/game/actions.ts
similarity index 91%
rename from src/shared/game/gameActions.ts
rename to src/shared/game/actions.ts
index 0e45aed..f417370 100644
--- a/src/shared/game/gameActions.ts
+++ b/src/shared/game/actions.ts
@@ -3,6 +3,10 @@ import type { SpecialCardType } from "./cards"
 type PlayerAction = {
 	initiatingPlayerId: string
 } & (
+	| {
+		type: "join"
+		name: string
+	}
 	| {
 		type: "hit"
 	}
@@ -13,6 +17,9 @@ type PlayerAction = {
 		type: "use-special"
 		cardType: SpecialCardType
 	}
+	| {
+		type: "leave"
+	}
 )
 
 type ServerAction = {
@@ -21,10 +28,6 @@ type ServerAction = {
 	| {
 		type: "start"
 		targetSum: number
-		players: Array<{
-			id: string
-			name: string
-		}>
 	}
 	| {
 		type: "deal-number"
diff --git a/src/shared/game/events.ts b/src/shared/game/events.ts
new file mode 100644
index 0000000..3eac798
--- /dev/null
+++ b/src/shared/game/events.ts
@@ -0,0 +1,6 @@
+import type { GameAction } from "./actions"
+
+export type GameEvent = {
+	type: "action"
+	action: GameAction
+}
\ No newline at end of file
diff --git a/src/shared/game/state.ts b/src/shared/game/state.ts
index 3b0cd4a..d4abf85 100644
--- a/src/shared/game/state.ts
+++ b/src/shared/game/state.ts
@@ -1,5 +1,5 @@
 import type { SpecialCardType } from "./cards"
-import type { GameAction } from "./gameActions"
+import type { GameAction } from "./actions"
 import { produce } from "immer"
 import { specialCardTypes } from "./cards"
 import { cloneDeep, tail, without } from "lodash-es"
@@ -56,16 +56,19 @@ export const produceNewState = (oldState: GameState, action: GameAction) => prod
 	}
 
 	switch (action.type) {
-		case "start":
-			state.players = action.players.map((player): GameStatePlayer => ({
-				id: player.id,
-				name: player.name,
+		case "join":
+			state.players.push({
+				id: action.initiatingPlayerId,
+				name: action.name,
 				numberCards: [],
 				specialCardCountByType: ALL_ZERO_SPECIAL_CARD_COUNTS,
 				stayed: false,
 				nextRoundCovert: false
-			}))
+			})
 
+			break
+
+		case "start":
 			state.phase = "running"
 			state.activePlayerId = state.players[0].id
 			state.targetSum = action.targetSum
diff --git a/src/shared/lobbyCode.ts b/src/shared/lobbyCode.ts
new file mode 100644
index 0000000..aa9447b
--- /dev/null
+++ b/src/shared/lobbyCode.ts
@@ -0,0 +1 @@
+export const LOBBY_CODE_LENGTH = 5
\ No newline at end of file
diff --git a/src/trpc.ts b/src/trpc.ts
index fbdc124..8cedad7 100644
--- a/src/trpc.ts
+++ b/src/trpc.ts
@@ -4,6 +4,7 @@ import type { AppRouter } from "./server"
 const wsUrl = new URL(location.href)
 wsUrl.protocol = wsUrl.protocol.replace("http", "ws")
 wsUrl.pathname = "/ws"
+wsUrl.hash = ""
 
 const wsClient = createWSClient({
 	url: wsUrl.href