tag(功能):完善登录功能

apps/ScreenShareApi/build.gradle.kts

@@ -20,8 +20,14 @@ dependencies {
     implementation(ktorLibs.server.netty)
     implementation("io.ktor:ktor-server-content-negotiation-jvm:3.5.0")
     implementation("io.ktor:ktor-serialization-kotlinx-json-jvm:3.5.0")
+    implementation("io.ktor:ktor-server-auth-jwt-jvm:3.5.0")
     implementation("io.ktor:ktor-server-cors-jvm:3.5.0")
+    implementation("io.ktor:ktor-server-status-pages-jvm:3.5.0")
+    implementation("org.flywaydb:flyway-core:11.3.2")
+    implementation("org.flywaydb:flyway-database-postgresql:11.3.2")
     implementation(libs.logback.classic)
+    implementation("org.mindrot:jbcrypt:0.4")
+    runtimeOnly("org.postgresql:postgresql:42.7.12")
 
     testImplementation(kotlin("test"))
     testImplementation(ktorLibs.server.testHost)

apps/ScreenShareApi/src/main/kotlin/Application.kt

@@ -1,11 +1,13 @@
 package top.OrangeRoll
 
-import configureRouting
 import io.ktor.server.application.Application
 
 /**
  * Ktor's YAML module entry point.
  */
 fun Application.module() {
+    configureDatabase()
+    bootstrapAdministrator()
+    configureSecurity()
     configureRouting()
 }

apps/ScreenShareApi/src/main/kotlin/Bootstrap.kt

@@ -0,0 +1,22 @@
+package top.OrangeRoll
+
+import io.ktor.server.application.Application
+
+/**
+ * Creates the first administrator only when it is absent.
+ * Keep these values in ignored application.local.yaml or environment variables.
+ */
+fun Application.bootstrapAdministrator() {
+    val config = environment.config
+    val username = config.propertyOrNull("bootstrapAdmin.username")?.getString()
+        ?: System.getenv("BOOTSTRAP_ADMIN_USERNAME")
+        ?: return
+    val password = config.propertyOrNull("bootstrapAdmin.password")?.getString()
+        ?: System.getenv("BOOTSTRAP_ADMIN_PASSWORD")
+        ?: return
+    val displayName = config.propertyOrNull("bootstrapAdmin.displayName")?.getString()
+        ?: System.getenv("BOOTSTRAP_ADMIN_DISPLAY_NAME")
+        ?: username
+
+    UserRepository.bootstrapAdmin(username, password, displayName)
+}

apps/ScreenShareApi/src/main/kotlin/Database.kt

@@ -0,0 +1,51 @@
+package top.OrangeRoll
+
+import io.ktor.server.application.Application
+import io.ktor.server.application.log
+import org.flywaydb.core.Flyway
+import java.sql.Connection
+import java.sql.DriverManager
+
+/**
+ * Applies versioned SQL migrations before the API starts accepting requests.
+ *
+ * Configuration comes from application.local.yaml for local development or
+ * DATABASE_* environment variables when the API runs in Docker Compose.
+ */
+fun Application.configureDatabase() {
+    val config = environment.config
+    val jdbcUrl = config.propertyOrNull("database.jdbcUrl")?.getString()
+        ?: System.getenv("DATABASE_JDBC_URL")
+    val user = config.propertyOrNull("database.user")?.getString()
+        ?: System.getenv("DATABASE_USER")
+    val password = config.propertyOrNull("database.password")?.getString()
+        ?: System.getenv("DATABASE_PASSWORD")
+
+    require(!jdbcUrl.isNullOrBlank()) { "Database JDBC URL is not configured" }
+    require(!user.isNullOrBlank()) { "Database user is not configured" }
+    require(password != null) { "Database password is not configured" }
+
+    val result = Flyway.configure()
+        .dataSource(jdbcUrl, user, password)
+        .locations("classpath:db/migration")
+        .load()
+        .migrate()
+
+    log.info("Database migration complete: ${result.migrationsExecuted} migration(s) applied")
+    Database.configure(jdbcUrl, user, password)
+}
+
+object Database {
+    private lateinit var jdbcUrl: String
+    private lateinit var user: String
+    private lateinit var password: String
+
+    fun configure(jdbcUrl: String, user: String, password: String) {
+        this.jdbcUrl = jdbcUrl
+        this.user = user
+        this.password = password
+    }
+
+    fun <T> useConnection(block: (Connection) -> T): T =
+        DriverManager.getConnection(jdbcUrl, user, password).use(block)
+}

apps/ScreenShareApi/src/main/kotlin/Repositories.kt

@@ -0,0 +1,269 @@
+package top.OrangeRoll
+
+import java.security.MessageDigest
+import java.security.SecureRandom
+import java.sql.Connection
+import java.time.Instant
+import java.util.Base64
+import java.util.UUID
+import org.mindrot.jbcrypt.BCrypt
+
+data class User(
+    val id: UUID,
+    val username: String,
+    val passwordHash: String,
+    val displayName: String,
+    val isAdmin: Boolean,
+)
+
+data class RoomRecord(
+    val id: UUID,
+    val title: String,
+    val status: String,
+    val createdBy: UUID,
+)
+
+data class RoomMember(val roomId: UUID, val userId: UUID, val role: RoomRole)
+
+enum class InvitationType { user, admin }
+
+object UserRepository {
+    fun findByUsername(username: String): User? = Database.useConnection { connection ->
+        connection.prepareStatement(
+            "SELECT id, username, password_hash, display_name, is_admin FROM users WHERE username = ?",
+        ).use { statement ->
+            statement.setString(1, username)
+            statement.executeQuery().use { result ->
+                if (result.next()) result.toUser() else null
+            }
+        }
+    }
+
+    fun findById(id: UUID): User? = Database.useConnection { connection ->
+        connection.prepareStatement(
+            "SELECT id, username, password_hash, display_name, is_admin FROM users WHERE id = ?",
+        ).use { statement ->
+            statement.setObject(1, id)
+            statement.executeQuery().use { result ->
+                if (result.next()) result.toUser() else null
+            }
+        }
+    }
+
+    fun bootstrapAdmin(username: String, password: String, displayName: String) {
+        if (findByUsername(username) != null) return
+        Database.useConnection { connection ->
+            connection.prepareStatement(
+                "INSERT INTO users (id, username, password_hash, display_name, is_admin) VALUES (?, ?, ?, ?, TRUE)",
+            ).use { statement ->
+                statement.setObject(1, UUID.randomUUID())
+                statement.setString(2, username)
+                statement.setString(3, BCrypt.hashpw(password, BCrypt.gensalt()))
+                statement.setString(4, displayName)
+                statement.executeUpdate()
+            }
+        }
+    }
+
+    fun register(inviteCode: String, username: String, password: String, displayName: String): User =
+        Database.useConnection { connection ->
+            connection.autoCommit = false
+            try {
+                val invitation = connection.prepareStatement(
+                    """
+                    SELECT id, invitation_type, expires_at, used_at
+                    FROM invitations
+                    WHERE code_hash = ?
+                    FOR UPDATE
+                    """.trimIndent(),
+                ).use { statement ->
+                    statement.setString(1, hashInviteCode(inviteCode))
+                    statement.executeQuery().use { result ->
+                        if (!result.next()) throw ApiException("邀请码无效", 400)
+                        InviteRow(
+                            id = result.getObject("id", UUID::class.java),
+                            type = InvitationType.valueOf(result.getString("invitation_type")),
+                            expiresAt = result.getTimestamp("expires_at").toInstant(),
+                            usedAt = result.getTimestamp("used_at")?.toInstant(),
+                        )
+                    }
+                }
+                if (invitation.usedAt != null || invitation.expiresAt.isBefore(Instant.now())) {
+                    throw ApiException("邀请码已使用或已过期", 400)
+                }
+
+                val user = User(
+                    id = UUID.randomUUID(),
+                    username = username,
+                    passwordHash = BCrypt.hashpw(password, BCrypt.gensalt()),
+                    displayName = displayName,
+                    isAdmin = invitation.type == InvitationType.admin,
+                )
+                connection.prepareStatement(
+                    "INSERT INTO users (id, username, password_hash, display_name, is_admin) VALUES (?, ?, ?, ?, ?)",
+                ).use { statement ->
+                    statement.setObject(1, user.id)
+                    statement.setString(2, user.username)
+                    statement.setString(3, user.passwordHash)
+                    statement.setString(4, user.displayName)
+                    statement.setBoolean(5, user.isAdmin)
+                    statement.executeUpdate()
+                }
+                connection.prepareStatement(
+                    "UPDATE invitations SET used_by = ?, used_at = CURRENT_TIMESTAMP WHERE id = ?",
+                ).use { statement ->
+                    statement.setObject(1, user.id)
+                    statement.setObject(2, invitation.id)
+                    statement.executeUpdate()
+                }
+                connection.commit()
+                user
+            } catch (error: Throwable) {
+                connection.rollback()
+                throw error
+            } finally {
+                connection.autoCommit = true
+            }
+        }
+
+    private data class InviteRow(
+        val id: UUID,
+        val type: InvitationType,
+        val expiresAt: Instant,
+        val usedAt: Instant?,
+    )
+}
+
+object InvitationRepository {
+    fun create(createdBy: UUID, type: InvitationType, expiresAt: Instant): String {
+        val code = Base64.getUrlEncoder().withoutPadding()
+            .encodeToString(SecureRandom().generateSeed(24))
+        Database.useConnection { connection ->
+            connection.prepareStatement(
+                """
+                INSERT INTO invitations (id, code_hash, invitation_type, created_by, expires_at)
+                VALUES (?, ?, ?, ?, ?)
+                """.trimIndent(),
+            ).use { statement ->
+                statement.setObject(1, UUID.randomUUID())
+                statement.setString(2, hashInviteCode(code))
+                statement.setString(3, type.name)
+                statement.setObject(4, createdBy)
+                statement.setTimestamp(5, java.sql.Timestamp.from(expiresAt))
+                statement.executeUpdate()
+            }
+        }
+        return code
+    }
+}
+
+object RoomRepository {
+    fun create(hostId: UUID, title: String): RoomRecord {
+        val room = RoomRecord(UUID.randomUUID(), title, "open", hostId)
+        Database.useConnection { connection ->
+            connection.autoCommit = false
+            try {
+                connection.prepareStatement(
+                    "INSERT INTO rooms (id, slug, title, created_by) VALUES (?, ?, ?, ?)",
+                ).use { statement ->
+                    statement.setObject(1, room.id)
+                    statement.setString(2, room.id.toString())
+                    statement.setString(3, room.title)
+                    statement.setObject(4, hostId)
+                    statement.executeUpdate()
+                }
+                connection.prepareStatement(
+                    "INSERT INTO room_members (room_id, user_id, role) VALUES (?, ?, 'host')",
+                ).use { statement ->
+                    statement.setObject(1, room.id)
+                    statement.setObject(2, hostId)
+                    statement.executeUpdate()
+                }
+                connection.commit()
+            } catch (error: Throwable) {
+                connection.rollback()
+                throw error
+            } finally {
+                connection.autoCommit = true
+            }
+        }
+        return room
+    }
+
+    fun find(roomId: UUID): RoomRecord? = Database.useConnection { connection ->
+        connection.prepareStatement("SELECT id, title, status, created_by FROM rooms WHERE id = ?").use { statement ->
+            statement.setObject(1, roomId)
+            statement.executeQuery().use { result ->
+                if (result.next()) {
+                    RoomRecord(
+                        result.getObject("id", UUID::class.java),
+                        result.getString("title"),
+                        result.getString("status"),
+                        result.getObject("created_by", UUID::class.java),
+                    )
+                } else null
+            }
+        }
+    }
+
+    fun member(roomId: UUID, userId: UUID): RoomMember? = Database.useConnection { connection ->
+        connection.prepareStatement(
+            "SELECT room_id, user_id, role FROM room_members WHERE room_id = ? AND user_id = ?",
+        ).use { statement ->
+            statement.setObject(1, roomId)
+            statement.setObject(2, userId)
+            statement.executeQuery().use { result ->
+                if (result.next()) {
+                    RoomMember(
+                        result.getObject("room_id", UUID::class.java),
+                        result.getObject("user_id", UUID::class.java),
+                        RoomRole.valueOf(result.getString("role")),
+                    )
+                } else null
+            }
+        }
+    }
+
+    fun joinAsViewer(roomId: UUID, userId: UUID): RoomMember {
+        val room = find(roomId) ?: throw ApiException("房间不存在", 404)
+        if (room.status != "open") throw ApiException("房间已关闭", 403)
+        Database.useConnection { connection ->
+            connection.prepareStatement(
+                "INSERT INTO room_members (room_id, user_id, role) VALUES (?, ?, 'viewer') ON CONFLICT DO NOTHING",
+            ).use { statement ->
+                statement.setObject(1, roomId)
+                statement.setObject(2, userId)
+                statement.executeUpdate()
+            }
+        }
+        return member(roomId, userId) ?: error("Room membership was not created")
+    }
+
+    fun updateRole(roomId: UUID, userId: UUID, role: RoomRole): RoomMember {
+        Database.useConnection { connection ->
+            connection.prepareStatement(
+                "UPDATE room_members SET role = ? WHERE room_id = ? AND user_id = ?",
+            ).use { statement ->
+                statement.setString(1, role.name)
+                statement.setObject(2, roomId)
+                statement.setObject(3, userId)
+                if (statement.executeUpdate() == 0) throw ApiException("房间成员不存在", 404)
+            }
+        }
+        return member(roomId, userId) ?: error("Room membership was not updated")
+    }
+}
+
+fun hashInviteCode(value: String): String =
+    MessageDigest.getInstance("SHA-256")
+        .digest(value.toByteArray(Charsets.UTF_8))
+        .joinToString("") { byte -> "%02x".format(byte) }
+
+private fun java.sql.ResultSet.toUser(): User =
+    User(
+        id = getObject("id", UUID::class.java),
+        username = getString("username"),
+        passwordHash = getString("password_hash"),
+        displayName = getString("display_name"),
+        isAdmin = getBoolean("is_admin"),
+    )

apps/ScreenShareApi/src/main/kotlin/Routing.kt

@@ -1,12 +1,20 @@
+package top.OrangeRoll
+
 import io.ktor.http.HttpHeaders
 import io.ktor.http.HttpMethod
 import io.ktor.http.HttpStatusCode
-import io.ktor.server.application.*
+import io.ktor.server.application.Application
+import io.ktor.server.application.call
+import io.ktor.server.application.install
+import io.ktor.server.auth.authenticate
 import io.ktor.server.plugins.contentnegotiation.ContentNegotiation
 import io.ktor.server.plugins.cors.routing.CORS
+import io.ktor.server.plugins.statuspages.StatusPages
 import io.ktor.server.request.receive
-import io.ktor.server.response.*
-import io.ktor.server.routing.*
+import io.ktor.server.response.respond
+import io.ktor.server.routing.get
+import io.ktor.server.routing.post
+import io.ktor.server.routing.routing
 import io.ktor.serialization.kotlinx.json.json
 import java.nio.charset.StandardCharsets
 import java.time.Instant
@@ -16,10 +24,14 @@ import javax.crypto.Mac
 import javax.crypto.spec.SecretKeySpec
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
+import org.mindrot.jbcrypt.BCrypt
 
 fun Application.configureRouting() {
-    install(ContentNegotiation) {
-        json()
+    install(ContentNegotiation) { json() }
+    install(StatusPages) {
+        exception<ApiException> { call, error ->
+            call.respond(HttpStatusCode.fromValue(error.status), ErrorResponse(error.message))
+        }
     }
     install(CORS) {
         val configuredOrigins = this@configureRouting.environment.config
@@ -29,95 +41,192 @@ fun Application.configureRouting() {
             ?.map(String::trim)
             ?.filter(String::isNotEmpty)
             .orEmpty()
-
         configuredOrigins.ifEmpty { listOf("http://localhost:5173") }.forEach { origin ->
-            val host = origin.removePrefix("http://").removePrefix("https://")
             allowHost(
-                host = host,
+                host = origin.removePrefix("http://").removePrefix("https://"),
                 schemes = listOf(if (origin.startsWith("https://")) "https" else "http"),
             )
         }
         allowMethod(HttpMethod.Post)
         allowMethod(HttpMethod.Get)
         allowHeader(HttpHeaders.ContentType)
+        allowHeader(HttpHeaders.Authorization)
     }
 
     routing {
-        get("/health") {
-            call.respond(HealthResponse(status = "ok"))
+        get("/health") { call.respond(HealthResponse("ok")) }
+
+        post("/api/auth/login") {
+            val request = call.receive<LoginRequest>()
+            val user = UserRepository.findByUsername(request.username.normalizedUsername())
+                ?.takeIf { BCrypt.checkpw(request.password, it.passwordHash) }
+                ?: throw ApiException("用户名或密码错误", 401)
+            call.respond(authResponse(user))
         }
 
-        post("/api/rooms/{roomId}/token") {
-            val roomName = call.parameters["roomId"]?.trim().orEmpty()
-            if (!ROOM_NAME.matches(roomName)) {
+        post("/api/auth/register") {
+            val request = call.receive<RegisterRequest>()
+            val username = request.username.normalizedUsername()
+            validateCredentials(username, request.password, request.displayName)
+            if (UserRepository.findByUsername(username) != null) {
+                throw ApiException("用户名已存在", 409)
+            }
+            val user = UserRepository.register(
+                inviteCode = request.inviteCode.trim(),
+                username = username,
+                password = request.password,
+                displayName = request.displayName.trim(),
+            )
+            call.respond(HttpStatusCode.Created, authResponse(user))
+        }
+
+        authenticate("auth-jwt") {
+            get("/api/auth/me") {
+                call.respond(UserResponse(call.requireCurrentUser()))
+            }
+
+            post("/api/admin/invitations") {
+                val admin = call.requireAdministrator()
+                val request = call.receive<CreateInvitationRequest>()
+                val type = runCatching { InvitationType.valueOf(request.type.lowercase()) }.getOrNull()
+                    ?: throw ApiException("邀请码类型必须是 user 或 admin", 400)
+                if (request.expiresInHours !in 1..720) {
+                    throw ApiException("邀请码有效期必须在 1 到 720 小时之间", 400)
+                }
+                val expiresAt = Instant.now().plusSeconds(request.expiresInHours * 3600L)
+                val code = InvitationRepository.create(admin.id, type, expiresAt)
                 call.respond(
-                    HttpStatusCode.BadRequest,
-                    ErrorResponse("roomId must contain 3-64 letters, numbers, underscores, or hyphens"),
+                    HttpStatusCode.Created,
+                    InvitationResponse(code, type.name, expiresAt.toString()),
                 )
-                return@post
             }
 
-            val request = call.receive<TokenRequest>()
-            val role = runCatching { RoomRole.valueOf(request.role.lowercase()) }.getOrNull()
-            if (role == null) {
-                call.respond(HttpStatusCode.BadRequest, ErrorResponse("role must be host, publisher, or viewer"))
-                return@post
+            post("/api/rooms") {
+                val user = call.requireCurrentUser()
+                val title = call.receive<CreateRoomRequest>().title.trim()
+                if (title.length !in 1..128) throw ApiException("房间标题必须为 1-128 个字符", 400)
+                call.respond(HttpStatusCode.Created, RoomResponse(RoomRepository.create(user.id, title), RoomRole.host))
             }
 
-            val participantName = request.participantName.trim()
-            if (participantName.length !in 1..64) {
-                call.respond(HttpStatusCode.BadRequest, ErrorResponse("participantName must be 1-64 characters"))
-                return@post
+            get("/api/rooms/{roomId}") {
+                val user = call.requireCurrentUser()
+                val room = RoomRepository.find(call.roomId()) ?: throw ApiException("房间不存在", 404)
+                val membership = RoomRepository.member(room.id, user.id)
+                if (membership == null && !user.isAdmin) throw ApiException("没有访问此房间的权限", 403)
+                call.respond(RoomResponse(room, membership?.role))
             }
 
-            val apiKey = environment.config.propertyOrNull("livekit.apiKey")?.getString()
-                ?: System.getenv("LIVEKIT_API_KEY")
-            val apiSecret = environment.config.propertyOrNull("livekit.apiSecret")?.getString()
-                ?: System.getenv("LIVEKIT_API_SECRET")
-            val publicUrl = environment.config.propertyOrNull("livekit.publicUrl")?.getString()
-                ?: System.getenv("LIVEKIT_PUBLIC_URL")
-
-            if (apiKey.isNullOrBlank() || apiSecret.isNullOrBlank() || publicUrl.isNullOrBlank()) {
-                application.log.error("LiveKit environment variables are not configured")
-                call.respond(HttpStatusCode.ServiceUnavailable, ErrorResponse("Video service is not configured"))
-                return@post
+            post("/api/rooms/{roomId}/join") {
+                val user = call.requireCurrentUser()
+                call.respond(RoomMemberResponse(RoomRepository.joinAsViewer(call.roomId(), user.id)))
             }
 
-            val identity = "dev-${UUID.randomUUID()}"
-            val token = LiveKitTokenIssuer(apiKey, apiSecret).issue(
-                roomName = roomName,
-                identity = identity,
-                participantName = participantName,
-                role = role,
-            )
+            post("/api/rooms/{roomId}/members/{userId}/role") {
+                val requester = call.requireCurrentUser()
+                val roomId = call.roomId()
+                val requesterMembership = RoomRepository.member(roomId, requester.id)
+                if (requesterMembership?.role != RoomRole.host && !requester.isAdmin) {
+                    throw ApiException("需要 host 或管理员权限", 403)
+                }
+                val targetUserId = call.parameters["userId"]?.let { runCatching { UUID.fromString(it) }.getOrNull() }
+                    ?: throw ApiException("userId 必须是 UUID", 400)
+                val role = runCatching { RoomRole.valueOf(call.receive<UpdateMemberRoleRequest>().role.lowercase()) }.getOrNull()
+                    ?: throw ApiException("角色必须是 host、publisher 或 viewer", 400)
+                call.respond(RoomMemberResponse(RoomRepository.updateRole(roomId, targetUserId, role)))
+            }
 
-            call.respond(
-                TokenResponse(
-                    roomName = roomName,
-                    participantIdentity = identity,
-                    participantName = participantName,
-                    livekitUrl = publicUrl,
-                    token = token,
-                    role = role.name,
-                ),
-            )
+            post("/api/rooms/{roomId}/token") {
+                val user = call.requireCurrentUser()
+                val room = RoomRepository.find(call.roomId()) ?: throw ApiException("房间不存在", 404)
+                val membership = RoomRepository.member(room.id, user.id)
+                    ?: throw ApiException("请先加入房间", 403)
+                val liveKit = liveKitSettings()
+                val token = LiveKitTokenIssuer(liveKit.apiKey, liveKit.apiSecret).issue(
+                    roomName = room.id.toString(),
+                    identity = user.id.toString(),
+                    participantName = user.displayName,
+                    role = membership.role,
+                )
+                call.respond(
+                    TokenResponse(
+                        roomName = room.id.toString(),
+                        participantIdentity = user.id.toString(),
+                        participantName = user.displayName,
+                        livekitUrl = liveKit.publicUrl,
+                        token = token,
+                        role = membership.role.name,
+                    ),
+                )
+            }
         }
     }
 }
 
-private val ROOM_NAME = Regex("[A-Za-z0-9_-]{3,64}")
+private fun Application.authResponse(user: User) =
+    AuthResponse(issueApplicationToken(user), UserResponse(user))
 
-@Serializable
-data class HealthResponse(val status: String)
+private fun io.ktor.server.application.ApplicationCall.requireCurrentUser(): User =
+    UserRepository.findById(currentUserId()) ?: throw ApiException("用户不存在", 401)
 
-@Serializable
-data class TokenRequest(
-    val participantName: String,
-    val role: String = "viewer",
-)
+private fun io.ktor.server.application.ApplicationCall.requireAdministrator(): User =
+    requireCurrentUser().takeIf { it.isAdmin } ?: throw ApiException("需要管理员权限", 403)
 
-@Serializable
-data class TokenResponse(
+private fun io.ktor.server.application.ApplicationCall.roomId(): UUID =
+    parameters["roomId"]?.let { runCatching { UUID.fromString(it) }.getOrNull() }
+        ?: throw ApiException("roomId 必须是 UUID", 400)
+
+private fun String.normalizedUsername(): String {
+    val normalized = trim().lowercase()
+    if (!Regex("[a-z0-9_-]{3,64}").matches(normalized)) {
+        throw ApiException("用户名只能包含 3-64 个小写字母、数字、下划线或连字符", 400)
+    }
+    return normalized
+}
+
+private fun validateCredentials(username: String, password: String, displayName: String) {
+    username.normalizedUsername()
+    if (password.length !in 8..128) throw ApiException("密码必须为 8-128 个字符", 400)
+    if (displayName.trim().length !in 1..64) throw ApiException("显示名称必须为 1-64 个字符", 400)
+}
+
+private fun Application.liveKitSettings(): LiveKitSettings {
+    val config = environment.config
+    fun value(path: String, variable: String): String =
+        config.propertyOrNull(path)?.getString()
+            ?: System.getenv(variable)
+            ?: throw ApiException("视频服务未配置", 503)
+    return LiveKitSettings(
+        value("livekit.apiKey", "LIVEKIT_API_KEY"),
+        value("livekit.apiSecret", "LIVEKIT_API_SECRET"),
+        value("livekit.publicUrl", "LIVEKIT_PUBLIC_URL"),
+    )
+}
+
+private data class LiveKitSettings(val apiKey: String, val apiSecret: String, val publicUrl: String)
+
+class ApiException(override val message: String, val status: Int) : RuntimeException(message)
+
+enum class RoomRole { host, publisher, viewer }
+
+@Serializable data class HealthResponse(val status: String)
+@Serializable data class ErrorResponse(val message: String)
+@Serializable data class LoginRequest(val username: String, val password: String)
+@Serializable data class RegisterRequest(val inviteCode: String, val username: String, val password: String, val displayName: String)
+@Serializable data class CreateInvitationRequest(val type: String, val expiresInHours: Int = 168)
+@Serializable data class CreateRoomRequest(val title: String)
+@Serializable data class UpdateMemberRoleRequest(val role: String)
+@Serializable data class AuthResponse(val token: String, val user: UserResponse)
+@Serializable data class UserResponse(val id: String, val username: String, val displayName: String, val isAdmin: Boolean) {
+    constructor(user: User) : this(user.id.toString(), user.username, user.displayName, user.isAdmin)
+}
+@Serializable data class InvitationResponse(val code: String, val type: String, val expiresAt: String)
+@Serializable data class RoomResponse(val id: String, val title: String, val status: String, val role: String?) {
+    constructor(room: RoomRecord, role: RoomRole?) : this(room.id.toString(), room.title, room.status, role?.name)
+}
+@Serializable data class RoomMemberResponse(val roomId: String, val role: String) {
+    constructor(member: RoomMember) : this(member.roomId.toString(), member.role.name)
+}
+@Serializable data class TokenResponse(
     val roomName: String,
     val participantIdentity: String,
     val participantName: String,
@@ -126,80 +235,25 @@ data class TokenResponse(
     val role: String,
 )
 
-@Serializable
-data class ErrorResponse(val message: String)
-
-private enum class RoomRole {
-    host,
-    publisher,
-    viewer,
-}
-
-/**
- * Creates a standard LiveKit HS256 access token. The API secret remains exclusively on the server.
- * Replace the development role supplied by the client with application JWT authorization before production.
- */
-private class LiveKitTokenIssuer(
-    private val apiKey: String,
-    private val apiSecret: String,
-) {
-    fun issue(
-        roomName: String,
-        identity: String,
-        participantName: String,
-        role: RoomRole,
-    ): String {
+private class LiveKitTokenIssuer(private val apiKey: String, private val apiSecret: String) {
+    fun issue(roomName: String, identity: String, participantName: String, role: RoomRole): String {
         val now = Instant.now().epochSecond
         val canPublish = role == RoomRole.host || role == RoomRole.publisher
         val payload = Json.encodeToString(
             LiveKitClaims.serializer(),
-            LiveKitClaims(
-                iss = apiKey,
-                sub = identity,
-                name = participantName,
-                nbf = now,
-                exp = now + TOKEN_TTL_SECONDS,
-                video = VideoGrant(
-                    roomJoin = true,
-                    room = roomName,
-                    canPublish = canPublish,
-                    canSubscribe = true,
-                    canPublishData = canPublish,
-                ),
-            ),
+            LiveKitClaims(apiKey, identity, participantName, now, now + 600, VideoGrant(true, roomName, canPublish, true, canPublish)),
         )
         val header = base64Url("""{"alg":"HS256","typ":"JWT"}""")
-        val body = base64Url(payload)
-        val unsignedToken = "$header.$body"
+        val unsignedToken = header + "." + base64Url(payload)
         val signature = Mac.getInstance("HmacSHA256")
             .apply { init(SecretKeySpec(apiSecret.toByteArray(StandardCharsets.UTF_8), "HmacSHA256")) }
             .doFinal(unsignedToken.toByteArray(StandardCharsets.UTF_8))
-        return "$unsignedToken.${Base64.getUrlEncoder().withoutPadding().encodeToString(signature)}"
+        return unsignedToken + "." + Base64.getUrlEncoder().withoutPadding().encodeToString(signature)
     }
 
     private fun base64Url(value: String): String =
         Base64.getUrlEncoder().withoutPadding().encodeToString(value.toByteArray(StandardCharsets.UTF_8))
-
-    private companion object {
-        const val TOKEN_TTL_SECONDS = 10 * 60L
-    }
 }
 
-@Serializable
-private data class LiveKitClaims(
-    val iss: String,
-    val sub: String,
-    val name: String,
-    val nbf: Long,
-    val exp: Long,
-    val video: VideoGrant,
-)
-
-@Serializable
-private data class VideoGrant(
-    val roomJoin: Boolean,
-    val room: String,
-    val canPublish: Boolean,
-    val canSubscribe: Boolean,
-    val canPublishData: Boolean,
-)
+@Serializable private data class LiveKitClaims(val iss: String, val sub: String, val name: String, val nbf: Long, val exp: Long, val video: VideoGrant)
+@Serializable private data class VideoGrant(val roomJoin: Boolean, val room: String, val canPublish: Boolean, val canSubscribe: Boolean, val canPublishData: Boolean)

apps/ScreenShareApi/src/main/kotlin/Security.kt

@@ -0,0 +1,73 @@
+package top.OrangeRoll
+
+import com.auth0.jwt.JWT
+import com.auth0.jwt.JWTVerifier
+import com.auth0.jwt.algorithms.Algorithm
+import io.ktor.server.application.Application
+import io.ktor.server.application.ApplicationCall
+import io.ktor.server.application.install
+import io.ktor.server.auth.Authentication
+import io.ktor.server.auth.jwt.JWTPrincipal
+import io.ktor.server.auth.jwt.jwt
+import io.ktor.server.auth.principal
+import java.time.Instant
+import java.util.Date
+
+data class AuthSettings(
+    val issuer: String,
+    val audience: String,
+    val realm: String,
+    val secret: String,
+)
+
+fun Application.authSettings(): AuthSettings {
+    val config = environment.config
+    fun value(path: String, environmentVariable: String): String =
+        config.propertyOrNull(path)?.getString()
+            ?: System.getenv(environmentVariable)
+            ?: error("$path is not configured")
+
+    return AuthSettings(
+        issuer = value("auth.issuer", "AUTH_JWT_ISSUER"),
+        audience = value("auth.audience", "AUTH_JWT_AUDIENCE"),
+        realm = value("auth.realm", "AUTH_JWT_REALM"),
+        secret = value("auth.jwtSecret", "AUTH_JWT_SECRET"),
+    )
+}
+
+fun Application.configureSecurity() {
+    val settings = authSettings()
+    install(Authentication) {
+        jwt("auth-jwt") {
+            realm = settings.realm
+            verifier(jwtVerifier(settings))
+            validate { credential ->
+                credential.payload.subject
+                    ?.let { JWTPrincipal(credential.payload) }
+            }
+        }
+    }
+}
+
+fun Application.issueApplicationToken(user: User): String {
+    val settings = authSettings()
+    return JWT.create()
+        .withIssuer(settings.issuer)
+        .withAudience(settings.audience)
+        .withSubject(user.id.toString())
+        .withClaim("username", user.username)
+        .withExpiresAt(Date.from(Instant.now().plusSeconds(8 * 60 * 60)))
+        .sign(Algorithm.HMAC256(settings.secret))
+}
+
+fun ApplicationCall.currentUserId(): java.util.UUID =
+    java.util.UUID.fromString(
+        principal<JWTPrincipal>()?.payload?.subject
+            ?: error("Authenticated user is missing from the token"),
+    )
+
+private fun jwtVerifier(settings: AuthSettings): JWTVerifier =
+    JWT.require(Algorithm.HMAC256(settings.secret))
+        .withIssuer(settings.issuer)
+        .withAudience(settings.audience)
+        .build()

apps/ScreenShareApi/src/main/resources/application.local.example.yaml

@@ -10,3 +10,19 @@ livekit:
   apiKey: devkey
   apiSecret: replace-with-a-long-random-secret
   publicUrl: ws://localhost:7880
+
+database:
+  jdbcUrl: jdbc:postgresql://localhost:5432/screenshare
+  user: screenshare
+  password: change-me
+
+auth:
+  issuer: screen-share-api
+  audience: screen-share-web
+  realm: screen-share
+  jwtSecret: replace-with-a-different-long-random-secret
+
+bootstrapAdmin:
+  username: admin
+  password: change-this-admin-password
+  displayName: 管理员

apps/ScreenShareApi/src/main/resources/db/migration/V1__create_core_schema.sql

@@ -0,0 +1,41 @@
+CREATE TABLE users (
+    id UUID PRIMARY KEY,
+    username VARCHAR(64) NOT NULL UNIQUE,
+    password_hash VARCHAR(255) NOT NULL,
+    display_name VARCHAR(64) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE rooms (
+    id UUID PRIMARY KEY,
+    slug VARCHAR(64) NOT NULL UNIQUE,
+    title VARCHAR(128) NOT NULL,
+    created_by UUID NOT NULL REFERENCES users(id),
+    status VARCHAR(16) NOT NULL DEFAULT 'open'
+        CHECK (status IN ('open', 'closed')),
+    expires_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    closed_at TIMESTAMPTZ
+);
+
+CREATE TABLE room_members (
+    room_id UUID NOT NULL REFERENCES rooms(id) ON DELETE CASCADE,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    role VARCHAR(16) NOT NULL
+        CHECK (role IN ('host', 'publisher', 'viewer')),
+    joined_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (room_id, user_id)
+);
+
+CREATE TABLE audit_logs (
+    id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    room_id UUID REFERENCES rooms(id) ON DELETE SET NULL,
+    actor_id UUID REFERENCES users(id) ON DELETE SET NULL,
+    event_type VARCHAR(64) NOT NULL,
+    event_data JSONB NOT NULL DEFAULT '{}'::jsonb,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX idx_rooms_created_by ON rooms(created_by);
+CREATE INDEX idx_room_members_user_id ON room_members(user_id);
+CREATE INDEX idx_audit_logs_room_id_created_at ON audit_logs(room_id, created_at DESC);

apps/ScreenShareApi/src/main/resources/db/migration/V2__add_administration_and_invitations.sql

@@ -0,0 +1,17 @@
+ALTER TABLE users
+    ADD COLUMN is_admin BOOLEAN NOT NULL DEFAULT FALSE;
+
+CREATE TABLE invitations (
+    id UUID PRIMARY KEY,
+    code_hash CHAR(64) NOT NULL UNIQUE,
+    invitation_type VARCHAR(16) NOT NULL
+        CHECK (invitation_type IN ('user', 'admin')),
+    created_by UUID NOT NULL REFERENCES users(id),
+    expires_at TIMESTAMPTZ NOT NULL,
+    used_by UUID REFERENCES users(id),
+    used_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CHECK ((used_by IS NULL AND used_at IS NULL) OR (used_by IS NOT NULL AND used_at IS NOT NULL))
+);
+
+CREATE INDEX idx_invitations_created_by ON invitations(created_by);

apps/ScreenShareWeb/src/App.css

@@ -4,6 +4,53 @@
   padding: 56px 0;
 }
 
+.app-shell.narrow {
+  width: min(460px, calc(100% - 32px));
+}
+
+.app-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 20px;
+}
+
+.auth-card, .admin-panel {
+  display: grid;
+  gap: 14px;
+  padding: 22px;
+  border: 1px solid #e0e1ee;
+  border-radius: 16px;
+  background: #fff;
+  box-shadow: 0 8px 30px rgb(30 33 80 / 7%);
+}
+
+.admin-panel {
+  grid-template-columns: auto auto auto 1fr;
+  align-items: center;
+  margin-bottom: 20px;
+}
+
+.admin-panel button {
+  min-height: 36px;
+  background: #ecebff;
+  color: #4536c7;
+}
+
+.invite-code {
+  overflow-wrap: anywhere;
+  color: #4536c7;
+}
+
+.link-button {
+  min-height: auto;
+  padding: 0;
+  color: #5547d4;
+  background: transparent;
+  font-weight: 500;
+  text-align: left;
+}
+
 header {
   margin-bottom: 32px;
 }
@@ -195,6 +242,10 @@ button:disabled {
     flex-wrap: wrap;
   }
 
+  .app-header, .admin-panel {
+    display: grid;
+  }
+
   .share-button {
     margin-left: 0;
   }

apps/ScreenShareWeb/src/App.tsx

@@ -4,6 +4,15 @@ import './App.css'
 
 type Role = 'host' | 'publisher' | 'viewer'
 
+type User = {
+  id: string
+  username: string
+  displayName: string
+  isAdmin: boolean
+}
+
+type Session = { token: string; user: User }
+
 type TokenResponse = {
   roomName: string
   participantIdentity: string
@@ -13,10 +22,7 @@ type TokenResponse = {
   role: Role
 }
 
-type ScreenFeed = {
-  track: Track
-  label: string
-}
+type ScreenFeed = { track: Track; label: string }
 
 function ScreenTrack({ track, label }: ScreenFeed) {
   const mediaContainerRef = useRef<HTMLDivElement>(null)
@@ -25,18 +31,12 @@ function ScreenTrack({ track, label }: ScreenFeed) {
     const mediaElement = track.attach()
     mediaElement.autoplay = true
     if (mediaElement instanceof HTMLVideoElement) {
-      // Local preview must be muted for browsers to allow autoplay.
       mediaElement.muted = true
       mediaElement.playsInline = true
-      void mediaElement.play().catch(() => {
-        // The user can still start playback manually if their browser blocks it.
-      })
+      void mediaElement.play().catch(() => undefined)
     }
     mediaContainerRef.current?.append(mediaElement)
-
-    return () => {
-      mediaElement.remove()
-    }
+    return () => mediaElement.remove()
   }, [track])
 
   return (
@@ -47,60 +47,138 @@ function ScreenTrack({ track, label }: ScreenFeed) {
   )
 }
 
+async function apiRequest<T>(path: string, options: RequestInit = {}, token?: string): Promise<T> {
+  const response = await fetch(path, {
+    ...options,
+    headers: {
+      'Content-Type': 'application/json',
+      ...(token ? { Authorization: 'Bearer ' + token } : {}),
+      ...options.headers,
+    },
+  })
+  const payload = (await response.json()) as T | { message: string }
+  if (!response.ok) {
+    const message = typeof payload === 'object' && payload !== null && 'message' in payload
+      ? String(payload.message)
+      : '请求失败'
+    throw new Error(message)
+  }
+  return payload as T
+}
+
 function App() {
   const roomRef = useRef<Room | null>(null)
-  const [roomName, setRoomName] = useState('demo-room')
-  const [participantName, setParticipantName] = useState('')
-  const [role, setRole] = useState<Role>('publisher')
+  const [session, setSession] = useState<Session | null>(null)
+  const [authMode, setAuthMode] = useState<'login' | 'register'>('login')
+  const [username, setUsername] = useState('')
+  const [password, setPassword] = useState('')
+  const [displayName, setDisplayName] = useState('')
+  const [inviteCode, setInviteCode] = useState('')
+  const [roomId, setRoomId] = useState('')
+  const [roomTitle, setRoomTitle] = useState('')
   const [connectionState, setConnectionState] = useState<'idle' | 'connecting' | 'connected'>('idle')
+  const [roomRole, setRoomRole] = useState<Role | null>(null)
   const [isSharing, setIsSharing] = useState(false)
   const [remoteCount, setRemoteCount] = useState(0)
   const [localScreen, setLocalScreen] = useState<ScreenFeed | null>(null)
   const [remoteScreens, setRemoteScreens] = useState<ScreenFeed[]>([])
+  const [createdInvite, setCreatedInvite] = useState('')
   const [error, setError] = useState('')
 
   useEffect(() => {
-    return () => {
-      roomRef.current?.disconnect()
-    }
+    const stored = localStorage.getItem('screen-share-session')
+    if (!stored) return
+    const saved = JSON.parse(stored) as Session
+    void apiRequest<User>('/api/auth/me', {}, saved.token)
+      .then((user) => setSession({ token: saved.token, user }))
+      .catch(() => localStorage.removeItem('screen-share-session'))
   }, [])
 
+  useEffect(() => () => {
+    void roomRef.current?.disconnect()
+  }, [])
+
+  function saveSession(next: Session) {
+    localStorage.setItem('screen-share-session', JSON.stringify(next))
+    setSession(next)
+  }
+
   function refreshRemoteCount(room: Room) {
     setRemoteCount(room.remoteParticipants.size)
   }
 
-  async function joinRoom() {
-    const normalizedRoom = roomName.trim()
-    const normalizedName = participantName.trim()
+  async function submitAuth() {
+    setError('')
+    try {
+      const body = authMode === 'login'
+        ? { username, password }
+        : { username, password, displayName, inviteCode }
+      const result = await apiRequest<Session>('/api/auth/' + authMode, {
+        method: 'POST',
+        body: JSON.stringify(body),
+      })
+      saveSession(result)
+      setPassword('')
+      setInviteCode('')
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : '认证失败')
+    }
+  }
 
-    if (!/^[A-Za-z0-9_-]{3,64}$/.test(normalizedRoom)) {
-      setError('房间号只能包含 3–64 个字母、数字、下划线或连字符。')
+  async function createInvite(type: 'user' | 'admin') {
+    if (!session) return
+    setError('')
+    try {
+      const result = await apiRequest<{ code: string }>('/api/admin/invitations', {
+        method: 'POST',
+        body: JSON.stringify({ type, expiresInHours: 168 }),
+      }, session.token)
+      setCreatedInvite(result.code)
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : '创建邀请码失败')
+    }
+  }
+
+  async function createRoom() {
+    if (!session || !roomTitle.trim()) {
+      setError('请输入房间标题。')
       return
     }
-    if (!normalizedName) {
-      setError('请输入显示名称。')
+    setError('')
+    try {
+      const room = await apiRequest<{ id: string }>('/api/rooms', {
+        method: 'POST',
+        body: JSON.stringify({ title: roomTitle.trim() }),
+      }, session.token)
+      setRoomId(room.id)
+      await connectRoom(room.id)
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : '创建房间失败')
+    }
+  }
+
+  async function connectRoom(targetRoomId = roomId.trim()) {
+    if (!session) return
+    if (!targetRoomId) {
+      setError('请输入房间 ID。')
       return
     }
-
     setError('')
     setConnectionState('connecting')
 
     try {
-      const response = await fetch(`/api/rooms/${encodeURIComponent(normalizedRoom)}/token`, {
+      await apiRequest('/api/rooms/' + encodeURIComponent(targetRoomId) + '/join', {
         method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ participantName: normalizedName, role }),
-      })
-      const payload = (await response.json()) as TokenResponse | { message: string }
-
-      if (!response.ok || !('token' in payload)) {
-        throw new Error('message' in payload ? payload.message : '无法获取房间凭证。')
-      }
+        body: '{}',
+      }, session.token)
+      const payload = await apiRequest<TokenResponse>('/api/rooms/' + encodeURIComponent(targetRoomId) + '/token', {
+        method: 'POST',
+        body: '{}',
+      }, session.token)
 
       roomRef.current?.disconnect()
       setLocalScreen(null)
       setRemoteScreens([])
-
       const room = new Room()
       room.on(RoomEvent.ParticipantConnected, () => refreshRemoteCount(room))
       room.on(RoomEvent.ParticipantDisconnected, () => refreshRemoteCount(room))
@@ -108,7 +186,7 @@ function App() {
         if (track.kind === Track.Kind.Video && publication.source === Track.Source.ScreenShare) {
           setRemoteScreens((screens) => [
             ...screens.filter((screen) => screen.track.sid !== track.sid),
-            { track, label: `${participant.name || participant.identity} 的屏幕` },
+            { track, label: (participant.name || participant.identity) + ' 的屏幕' },
           ])
         }
       })
@@ -129,6 +207,7 @@ function App() {
       })
       room.on(RoomEvent.Disconnected, () => {
         setConnectionState('idle')
+        setRoomRole(null)
         setIsSharing(false)
         setRemoteCount(0)
         setLocalScreen(null)
@@ -137,122 +216,110 @@ function App() {
 
       await room.connect(payload.livekitUrl, payload.token)
       roomRef.current = room
+      setRoomId(targetRoomId)
+      setRoomRole(payload.role)
       refreshRemoteCount(room)
       setConnectionState('connected')
     } catch (cause) {
       setConnectionState('idle')
-      setError(cause instanceof Error ? cause.message : '连接房间时发生未知错误。')
+      setError(cause instanceof Error ? cause.message : '连接房间失败')
     }
   }
 
   async function toggleScreenShare() {
-    const room = roomRef.current
-    if (!room) {
-      return
-    }
-
-    setError('')
+    if (!roomRef.current) return
     try {
-      await room.localParticipant.setScreenShareEnabled(!isSharing)
+      await roomRef.current.localParticipant.setScreenShareEnabled(!isSharing)
     } catch (cause) {
-      setError(cause instanceof Error ? cause.message : '无法切换屏幕共享。')
+      setError(cause instanceof Error ? cause.message : '无法切换屏幕共享')
     }
   }
 
   function leaveRoom() {
     roomRef.current?.disconnect()
     roomRef.current = null
-    setConnectionState('idle')
-    setIsSharing(false)
-    setRemoteCount(0)
-    setLocalScreen(null)
-    setRemoteScreens([])
+  }
+
+  function logout() {
+    leaveRoom()
+    localStorage.removeItem('screen-share-session')
+    setSession(null)
+    setCreatedInvite('')
   }
 
   const connected = connectionState === 'connected'
-  const canShare = role === 'host' || role === 'publisher'
+  const canShare = roomRole === 'host' || roomRole === 'publisher'
+
+  if (!session) {
+    return (
+      <main className="app-shell narrow">
+        <header>
+          <p className="eyebrow">SCREEN SHARE</p>
+          <h1>{authMode === 'login' ? '登录' : '使用邀请码注册'}</h1>
+        </header>
+        <section className="auth-card">
+          <label>用户名<input value={username} onChange={(event) => setUsername(event.target.value)} /></label>
+          <label>密码<input type="password" value={password} onChange={(event) => setPassword(event.target.value)} /></label>
+          {authMode === 'register' && (
+            <>
+              <label>显示名称<input value={displayName} onChange={(event) => setDisplayName(event.target.value)} /></label>
+              <label>邀请码<input value={inviteCode} onChange={(event) => setInviteCode(event.target.value)} /></label>
+            </>
+          )}
+          <button type="button" className="primary" onClick={() => void submitAuth()}>
+            {authMode === 'login' ? '登录' : '注册并登录'}
+          </button>
+          <button type="button" className="link-button" onClick={() => setAuthMode(authMode === 'login' ? 'register' : 'login')}>
+            {authMode === 'login' ? '没有账号？使用邀请码注册' : '已有账号？去登录'}
+          </button>
+          {error && <p className="error" role="alert">{error}</p>}
+        </section>
+      </main>
+    )
+  }
 
   return (
     <main className="app-shell">
-      <header>
-        <p className="eyebrow">LIVEKIT · 开发环境</p>
-        <h1>屏幕共享房间</h1>
-        <p className="subtitle">浏览器直接连接 LiveKit，Ktor 仅签发短期访问凭证。</p>
+      <header className="app-header">
+        <div>
+          <p className="eyebrow">LIVEKIT · 已登录</p>
+          <h1>屏幕共享房间</h1>
+          <p className="subtitle">当前用户：{session.user.displayName}（{session.user.isAdmin ? '管理员' : '普通用户'}）</p>
+        </div>
+        <button type="button" className="secondary" onClick={logout}>退出登录</button>
       </header>
 
-      <section className="join-panel" aria-label="加入房间">
-        <label>
-          房间号
-          <input
-            value={roomName}
-            onChange={(event) => setRoomName(event.target.value)}
-            disabled={connected}
-            maxLength={64}
-          />
-        </label>
-        <label>
-          显示名称
-          <input
-            value={participantName}
-            onChange={(event) => setParticipantName(event.target.value)}
-            disabled={connected}
-            maxLength={64}
-            placeholder="例如：张三"
-          />
-        </label>
-        <label>
-          房间角色
-          <select value={role} onChange={(event) => setRole(event.target.value as Role)} disabled={connected}>
-            <option value="host">Host（可共享）</option>
-            <option value="publisher">Publisher（可共享）</option>
-            <option value="viewer">Viewer（仅观看）</option>
-          </select>
-        </label>
+      {session.user.isAdmin && (
+        <section className="admin-panel">
+          <strong>管理员邀请码</strong>
+          <button type="button" onClick={() => void createInvite('user')}>创建普通用户邀请码</button>
+          <button type="button" onClick={() => void createInvite('admin')}>创建管理员邀请码</button>
+          {createdInvite && <code className="invite-code">{createdInvite}</code>}
+        </section>
+      )}
 
-        {!connected ? (
-          <button type="button" className="primary" onClick={() => void joinRoom()} disabled={connectionState === 'connecting'}>
-            {connectionState === 'connecting' ? '正在连接…' : '加入房间'}
-          </button>
-        ) : (
-          <button type="button" className="secondary" onClick={leaveRoom}>离开房间</button>
-        )}
+      <section className="join-panel">
+        <label>新房间标题<input value={roomTitle} onChange={(event) => setRoomTitle(event.target.value)} disabled={connected} /></label>
+        <button type="button" className="primary" onClick={() => void createRoom()} disabled={connected}>创建房间</button>
+        <label>房间 ID<input value={roomId} onChange={(event) => setRoomId(event.target.value)} disabled={connected} placeholder="创建后或从他人处获得" /></label>
+        {!connected
+          ? <button type="button" className="secondary" onClick={() => void connectRoom()} disabled={connectionState === 'connecting'}>{connectionState === 'connecting' ? '正在连接…' : '加入房间'}</button>
+          : <button type="button" className="secondary" onClick={leaveRoom}>离开房间</button>}
       </section>
 
       {error && <p className="error" role="alert">{error}</p>}
 
       <section className="status-bar" aria-live="polite">
         <span className={connected ? 'status online' : 'status'}>{connected ? '已连接' : '未连接'}</span>
+        <span>{roomRole ? '房间角色：' + roomRole : '尚未加入房间'}</span>
         <span>其他参与者：{remoteCount}</span>
-        {connected && (
-          <button type="button" className="share-button" onClick={() => void toggleScreenShare()} disabled={!canShare}>
-            {isSharing ? '停止共享屏幕' : '共享屏幕'}
-          </button>
-        )}
-        {connected && !canShare && <span className="hint">Viewer 没有发布权限</span>}
+        {connected && <button type="button" className="share-button" onClick={() => void toggleScreenShare()} disabled={!canShare}>{isSharing ? '停止共享屏幕' : '共享屏幕'}</button>}
       </section>
 
       <section className="screens">
-        <div className="screen-section">
-          <h2>我的屏幕</h2>
-          <div className="video-stack">
-            {localScreen ? <ScreenTrack {...localScreen} /> : <p className="empty">尚未共享屏幕</p>}
-          </div>
-        </div>
-        <div className="screen-section">
-          <h2>远端屏幕</h2>
-          <div className="video-stack">
-            {remoteScreens.length === 0
-              ? <p className="empty">等待其他参与者共享屏幕</p>
-              : remoteScreens.map((screen) => (
-                <ScreenTrack key={screen.track.sid} {...screen} />
-              ))}
-          </div>
-        </div>
+        <div className="screen-section"><h2>我的屏幕</h2><div className="video-stack">{localScreen ? <ScreenTrack {...localScreen} /> : <p className="empty">尚未共享屏幕</p>}</div></div>
+        <div className="screen-section"><h2>远端屏幕</h2><div className="video-stack">{remoteScreens.length === 0 ? <p className="empty">等待其他参与者共享屏幕</p> : remoteScreens.map((screen) => <ScreenTrack key={screen.track.sid} {...screen} />)}</div></div>
       </section>
-
-      <p className="development-note">
-        当前角色由客户端请求，仅用于本地验证。生产环境必须由应用 JWT 与房间成员权限决定角色。
-      </p>
     </main>
   )
 }