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computed,
reactive,
ref,
shallowRef,
} from "vue";
import { defineStore } from "pinia";
import {
createChatWorkspaceApi,
createChatWorkspaceController,
createChatWorkspaceState,
type BusinessId,
type ChatApi,
type ChatAttachment,
type ChatConversation,
type ChatMessage,
type ChatMessagePage,
type ChatReadFact,
type ChatWebSocketTicket,
type ChatWorkspaceController,
type ChatWorkspaceState,
} from "@plain-journal/foundation";
const apiBaseUrl = import.meta.env.VITE_API_BASE_URL?.trim() ?? "";
const PENDING_SEND_STORAGE_PREFIX =
"plain-journal:admin-chat:pending-send:v2:";
const POLL_INTERVAL_MS = 15_000;
export interface AdminChatAccessContext {
authorized: boolean;
operatorId: BusinessId | null;
accessToken: string | null;
}
export type AdminChatOperationKind = "claim" | "close";
export type AdminChatOperationPhase =
| "idle"
| "processing"
| "unknown"
| "accepted"
| "rejected";
interface PendingAdminChatOperation {
kind: AdminChatOperationKind;
conversationId: BusinessId;
}
interface ActiveWorkspace {
operatorId: BusinessId;
accessToken: string;
revision: number;
state: ChatWorkspaceState;
controller: ChatWorkspaceController;
}
export class AdminChatContractError extends Error {
constructor(message: string) {
super(message);
this.name = "AdminChatContractError";
}
}
function isBusinessId(value: unknown): value is BusinessId {
return typeof value === "string" && /^[0-9]+$/u.test(value);
}
function isNonNegativeInteger(value: unknown): value is number {
return Number.isInteger(value) && Number(value) >= 0;
}
function isPositiveInteger(value: unknown): value is number {
return Number.isInteger(value) && Number(value) > 0;
}
function isInstant(value: unknown): value is string {
return typeof value === "string"
&& value.length > 0
&& Number.isFinite(Date.parse(value));
}
function validAttachment(value: unknown): value is ChatAttachment {
return Boolean(
value
&& typeof value === "object"
&& "id" in value
&& isBusinessId(value.id)
&& "fileName" in value
&& typeof value.fileName === "string"
&& value.fileName.length > 0
&& "mimeType" in value
&& typeof value.mimeType === "string"
&& value.mimeType.length > 0
&& "sizeBytes" in value
&& isPositiveInteger(value.sizeBytes),
);
}
function validConversation(value: unknown): value is ChatConversation {
return Boolean(
value
&& typeof value === "object"
&& "id" in value
&& isBusinessId(value.id)
&& "conversationNo" in value
&& typeof value.conversationNo === "string"
&& value.conversationNo.length > 0
&& "customerId" in value
&& isBusinessId(value.customerId)
&& "assignedAgentId" in value
&& (value.assignedAgentId === null || isBusinessId(value.assignedAgentId))
&& "subject" in value
&& typeof value.subject === "string"
&& value.subject.length > 0
&& "contextType" in value
&& (value.contextType === null || typeof value.contextType === "string")
&& "contextId" in value
&& (value.contextId === null || typeof value.contextId === "string")
&& "status" in value
&& ["OPEN", "CLOSED"].includes(String(value.status))
&& "lastMessageSequence" in value
&& isNonNegativeInteger(value.lastMessageSequence)
&& "unreadCount" in value
&& isNonNegativeInteger(value.unreadCount)
&& "version" in value
&& isNonNegativeInteger(value.version)
&& "createdAt" in value
&& isInstant(value.createdAt)
&& "updatedAt" in value
&& isInstant(value.updatedAt),
);
}
function validateConversation(
value: ChatConversation,
expectedId?: BusinessId,
): ChatConversation {
Iif (
!validConversation(value)
|| (expectedId !== undefined && value.id !== expectedId)
) {
throw new AdminChatContractError(
"Chat 会话事实缺少字符串身份、合法状态或与请求目标不一致。",
);
}
return value;
}
function validateConversations(
values: ChatConversation[],
): ChatConversation[] {
if (
!Array.isArray(values)
|| !values.every(validConversation)
|| new Set(values.map((value) => value.id)).size !== values.length
) {
throw new AdminChatContractError(
"Chat 客服队列包含非法、重复或非字符串会话身份。",
);
}
return values;
}
function validMessage(value: unknown): value is ChatMessage {
return Boolean(
value
&& typeof value === "object"
&& "id" in value
&& isBusinessId(value.id)
&& "conversationId" in value
&& isBusinessId(value.conversationId)
&& "senderId" in value
&& isBusinessId(value.senderId)
&& "clientMessageId" in value
&& typeof value.clientMessageId === "string"
&& value.clientMessageId.length > 0
&& value.clientMessageId.length <= 64
&& "sequence" in value
&& isPositiveInteger(value.sequence)
&& "messageType" in value
&& ["TEXT", "IMAGE", "FILE"].includes(String(value.messageType))
&& "content" in value
&& typeof value.content === "string"
&& value.content.length <= 4000
&& "attachments" in value
&& Array.isArray(value.attachments)
&& value.attachments.every(validAttachment)
&& new Set(value.attachments.map((attachment) => attachment.id)).size
=== value.attachments.length
&& "status" in value
&& typeof value.status === "string"
&& value.status.length > 0
&& "createdAt" in value
&& isInstant(value.createdAt),
);
}
function validateMessage(
value: ChatMessage,
expectedConversationId: BusinessId,
expectedClientMessageId?: string,
expectedSenderId?: BusinessId,
): ChatMessage {
Iif (
!validMessage(value)
|| value.conversationId !== expectedConversationId
|| (
expectedClientMessageId !== undefined
&& value.clientMessageId !== expectedClientMessageId
)
|| (
expectedSenderId !== undefined
&& value.senderId !== expectedSenderId
)
) {
throw new AdminChatContractError(
"Chat 消息响应与会话、发送者或原客户端消息键不一致。",
);
}
return value;
}
function validateMessagePage(
value: ChatMessagePage,
conversationId: BusinessId,
beforeSequence: number | undefined,
size: number,
): ChatMessagePage {
Iif (
!value
|| typeof value !== "object"
|| !Array.isArray(value.items)
|| value.items.length > size
|| !value.items.every((message) =>
validMessage(message)
&& message.conversationId === conversationId
&& (
beforeSequence === undefined
|| message.sequence < beforeSequence
))
|| new Set(value.items.map((message) => message.id)).size
!== value.items.length
|| new Set(value.items.map((message) => message.sequence)).size
!== value.items.length
|| !value.items.every((message, index, items) =>
index === 0 || (items[index - 1]?.sequence ?? 0) < message.sequence)
|| !(
value.nextBeforeSequence === null
|| isPositiveInteger(value.nextBeforeSequence)
)
|| typeof value.hasMore !== "boolean"
|| (value.hasMore && value.nextBeforeSequence === null)
) {
throw new AdminChatContractError(
"Chat 历史分页与会话身份、顺序或游标契约不一致。",
);
}
return value;
}
function validateReadFact(
value: ChatReadFact,
conversationId: BusinessId,
lastReadMessageId: BusinessId,
): ChatReadFact {
Iif (
!value
|| typeof value !== "object"
|| !isBusinessId(value.conversationId)
|| value.conversationId !== conversationId
|| !isBusinessId(value.lastReadMessageId)
|| value.lastReadMessageId !== lastReadMessageId
|| !isPositiveInteger(value.lastReadSequence)
|| !isInstant(value.readAt)
) {
throw new AdminChatContractError(
"Chat 已读响应与会话或最后消息身份不一致。",
);
}
return value;
}
function validateTicket(value: ChatWebSocketTicket): ChatWebSocketTicket {
if (
!value
|| typeof value !== "object"
|| typeof value.ticket !== "string"
|| value.ticket.length === 0
|| value.targetPath !== "/ws/chat"
|| value.queryParameter !== "ticket"
|| !isInstant(value.expiresAt)
) {
throw new AdminChatContractError(
"Chat WebSocket 票据没有遵守固定路径、查询参数或时效契约。",
);
}
return value;
}
function guardedApi(
accessToken: string,
operatorId: BusinessId,
): ChatApi {
const raw = createChatWorkspaceApi(() => accessToken, apiBaseUrl);
return {
async createConversation(input) {
return validateConversation(await raw.createConversation(input));
},
async conversations(limit) {
return validateConversations(await raw.conversations(limit));
},
async conversation(conversationId) {
return validateConversation(
await raw.conversation(conversationId),
conversationId,
);
},
async claimConversation(conversationId) {
const value = validateConversation(
await raw.claimConversation(conversationId),
conversationId,
);
if (value.assignedAgentId !== operatorId) {
throw new AdminChatContractError(
"Chat 认领接口返回了其他客服的成员事实。",
);
}
return value;
},
async closeConversation(conversationId) {
const value = validateConversation(
await raw.closeConversation(conversationId),
conversationId,
);
if (value.status !== "CLOSED") {
throw new AdminChatContractError(
"Chat 关闭接口没有返回 CLOSED 权威状态。",
);
}
return value;
},
async messages(conversationId, beforeSequence, size = 50) {
return validateMessagePage(
await raw.messages(conversationId, beforeSequence, size),
conversationId,
beforeSequence,
size,
);
},
async sendMessage(conversationId, input) {
return validateMessage(
await raw.sendMessage(conversationId, input),
conversationId,
input.clientMessageId,
operatorId,
);
},
async markRead(conversationId, lastReadMessageId) {
return validateReadFact(
await raw.markRead(conversationId, lastReadMessageId),
conversationId,
lastReadMessageId,
);
},
async createWebSocketTicket() {
return validateTicket(await raw.createWebSocketTicket());
},
};
}
function isActiveContext(
context: AdminChatAccessContext,
): context is {
authorized: true;
operatorId: BusinessId;
accessToken: string;
} {
return context.authorized
&& isBusinessId(context.operatorId)
&& typeof context.accessToken === "string"
&& context.accessToken.length > 0;
}
function pendingSendStorageKey(operatorId: BusinessId): string {
return `${PENDING_SEND_STORAGE_PREFIX}${operatorId}`;
}
export const useAdminChatStore = defineStore("admin-chat", () => {
const workspace = shallowRef<ActiveWorkspace | null>(null);
const routeConversationId = ref<BusinessId | null>(null);
const operationPhase = ref<AdminChatOperationPhase>("idle");
const operationMessage = ref<string | null>(null);
const pendingOperation = ref<PendingAdminChatOperation | null>(null);
let workspaceRevision = 0;
let running = false;
let pollTimer: number | null = null;
const state = computed(() => workspace.value?.state ?? null);
const operatorId = computed(() => workspace.value?.operatorId ?? null);
const conversations = computed(() => state.value?.conversations ?? []);
const activeConversationId = computed(() =>
state.value?.activeConversationId ?? null);
const activeConversation = computed(() => {
const current = workspace.value;
return current?.controller.activeConversation() ?? null;
});
const messages = computed(() => state.value?.messages ?? []);
const nextBeforeSequence = computed(() =>
state.value?.nextBeforeSequence ?? null);
const hasMore = computed(() => state.value?.hasMore ?? false);
const loadingConversations = computed(() =>
state.value?.loadingConversations ?? false);
const loadingMessages = computed(() =>
state.value?.loadingMessages ?? false);
const loadingOlder = computed(() => state.value?.loadingOlder ?? false);
const sending = computed(() => state.value?.sending ?? false);
const claimingConversationId = computed(() =>
state.value?.claimingConversationId ?? null);
const closingConversationId = computed(() =>
state.value?.closingConversationId ?? null);
const error = computed(() => state.value?.error ?? null);
const sendError = computed(() => state.value?.sendError ?? null);
const sendUnknown = computed(() => state.value?.sendUnknown ?? false);
const readError = computed(() => state.value?.readError ?? null);
const realtimeStatus = computed(() =>
state.value?.realtimeStatus ?? "idle");
const realtimeMessage = computed(() =>
state.value?.realtimeMessage ?? "实时连接尚未启动。");
const pendingSend = computed(() => state.value?.pendingSend ?? null);
const assignedToMe = computed(() =>
Boolean(
activeConversation.value
&& activeConversation.value.assignedAgentId === operatorId.value,
));
const assignedToOther = computed(() =>
Boolean(
activeConversation.value?.assignedAgentId
&& activeConversation.value.assignedAgentId !== operatorId.value,
));
const operationBlocked = computed(() =>
operationPhase.value === "processing"
|| operationPhase.value === "unknown");
const canRetryOperation = computed(() =>
operationPhase.value === "unknown"
&& pendingOperation.value !== null);
function workspaceIsCurrent(candidate: ActiveWorkspace): boolean {
return workspace.value === candidate
&& candidate.revision === workspaceRevision;
}
function synchronizeAccess(
context: AdminChatAccessContext,
): ActiveWorkspace | null {
const current = workspace.value;
const nextOperatorId = isActiveContext(context)
? context.operatorId
: null;
const nextAccessToken = isActiveContext(context)
? context.accessToken
: null;
if (
current
&& current.operatorId === nextOperatorId
&& current.accessToken === nextAccessToken
) {
return current;
}
current?.controller.disconnectRealtime();
workspaceRevision += 1;
const operatorChanged = current?.operatorId !== nextOperatorId;
if (operatorChanged) {
pendingOperation.value = null;
operationPhase.value = "idle";
operationMessage.value = null;
} else Iif (pendingOperation.value) {
operationPhase.value = "unknown";
operationMessage.value =
"员工会话凭据已更新，原客服操作继续保持结果未知；只能针对同一会话重试。";
}
Iif (!isActiveContext(context)) {
workspace.value = null;
return null;
}
const chatState = reactive(createChatWorkspaceState({
pendingSendStorageKey: pendingSendStorageKey(context.operatorId),
}));
if (chatState.pendingSend) {
chatState.sendUnknown = true;
chatState.sendError = chatState.pendingSend.userId === context.operatorId
? "发现一条尚未确认的客服回复。原客户端消息键与正文已恢复，只能查询或原样重试。"
: "待确认客服回复的所有者与当前员工不一致，当前工作区不会查询或重试。";
}
const controller = createChatWorkspaceController({
state: chatState,
api: guardedApi(context.accessToken, context.operatorId),
currentUserId: () => context.operatorId,
pendingSendStorageKey: pendingSendStorageKey(context.operatorId),
apiBaseUrl,
});
const next: ActiveWorkspace = {
operatorId: context.operatorId,
accessToken: context.accessToken,
revision: workspaceRevision,
state: chatState,
controller,
};
workspace.value = next;
Iif (running) {
controller.connectRealtime();
}
return next;
}
async function markLatestRead(
candidate = workspace.value,
): Promise<ChatReadFact | null> {
Iif (!candidate) {
return null;
}
const result = await candidate.controller.markLatestRead();
return workspaceIsCurrent(candidate) ? result : null;
}
async function refreshCurrent(): Promise<void> {
const current = workspace.value;
Iif (!current) {
return;
}
await current.controller.loadConversations();
Iif (!workspaceIsCurrent(current)) {
return;
}
const conversationId = routeConversationId.value;
current.controller.setActiveConversation(conversationId);
if (!conversationId) {
return;
}
let selected = current.controller.conversation(conversationId);
Iif (!selected) {
selected = await current.controller.loadActiveConversation();
if (!workspaceIsCurrent(current)) {
return;
}
}
if (selected?.assignedAgentId !== current.operatorId) {
current.controller.clearMessages();
return;
}
const [, page] = await Promise.all([
current.controller.loadActiveConversation(),
current.controller.loadMessages(conversationId),
]);
if (!workspaceIsCurrent(current)) {
return;
}
Eif (page.length > 0) {
await markLatestRead(current);
}
}
async function refresh(
context: AdminChatAccessContext,
conversationId: BusinessId | null = routeConversationId.value,
): Promise<void> {
synchronizeAccess(context);
routeConversationId.value = conversationId;
await refreshCurrent();
}
async function start(
context: AdminChatAccessContext,
conversationId: BusinessId | null,
): Promise<void> {
running = true;
synchronizeAccess(context);
routeConversationId.value = conversationId;
workspace.value?.controller.connectRealtime();
await refreshCurrent();
if (pollTimer !== null) {
globalThis.clearInterval(pollTimer);
}
pollTimer = globalThis.setInterval(() => {
void refreshCurrent();
}, POLL_INTERVAL_MS);
}
function stop() {
running = false;
workspace.value?.controller.disconnectRealtime();
if (pollTimer !== null) {
globalThis.clearInterval(pollTimer);
pollTimer = null;
}
}
async function updateAccess(context: AdminChatAccessContext): Promise<void> {
synchronizeAccess(context);
if (running) {
workspace.value?.controller.connectRealtime();
await refreshCurrent();
}
}
async function updateRoute(
context: AdminChatAccessContext,
conversationId: BusinessId | null,
): Promise<void> {
synchronizeAccess(context);
routeConversationId.value = conversationId;
if (running) {
await refreshCurrent();
}
}
function beginOperation(
kind: AdminChatOperationKind,
conversationId: BusinessId,
) {
pendingOperation.value = { kind, conversationId };
operationPhase.value = "processing";
operationMessage.value = kind === "claim"
? "正在等待 Chat 确认客服成员事实。"
: "正在等待 Chat 确认会话关闭事实。";
}
function acceptOperation(message: string) {
pendingOperation.value = null;
operationPhase.value = "accepted";
operationMessage.value = message;
}
function rejectOperation(message: string) {
pendingOperation.value = null;
operationPhase.value = "rejected";
operationMessage.value = message;
}
function keepOperationUnknown(message: string) {
operationPhase.value = "unknown";
operationMessage.value = message;
}
async function claimConversation(
context: AdminChatAccessContext,
conversationId: BusinessId,
): Promise<ChatConversation | null> {
const current = synchronizeAccess(context);
Iif (!current) {
rejectOperation("当前会话无权认领客服会话。");
return null;
}
Iif (
pendingOperation.value
&& (
pendingOperation.value.kind !== "claim"
|| pendingOperation.value.conversationId !== conversationId
)
) {
keepOperationUnknown(
"上一项客服操作尚未确认，不能对另一会话发起新的认领或关闭。",
);
return null;
}
current.controller.setActiveConversation(conversationId);
beginOperation("claim", conversationId);
const result = await current.controller.claimConversation(conversationId);
Iif (!workspaceIsCurrent(current)) {
return null;
}
Iif (result?.assignedAgentId === current.operatorId) {
acceptOperation("Chat 已确认当前员工为会话成员，私聊正文现已开放。");
return result;
}
const queueFact = current.controller.conversation(conversationId);
Eif (queueFact?.assignedAgentId === current.operatorId) {
const authority = await current.controller.loadActiveConversation();
Iif (!workspaceIsCurrent(current)) {
return null;
}
Eif (authority?.assignedAgentId === current.operatorId) {
await current.controller.loadMessages(conversationId);
await markLatestRead(current);
acceptOperation(
"认领响应未返回，但 Chat 权威成员事实已确认当前员工；页面没有提前读取正文。",
);
return authority;
}
}
if (
queueFact?.assignedAgentId
&& queueFact.assignedAgentId !== current.operatorId
) {
rejectOperation(
`Chat 已确认会话由客服 ${queueFact.assignedAgentId} 处理，当前员工不能读取正文。`,
);
return null;
}
keepOperationUnknown(
"认领结果尚未确认。页面仍然隐藏私聊正文，只允许针对同一会话重新认领。",
);
return null;
}
async function closeConversation(
context: AdminChatAccessContext,
conversationId = activeConversationId.value,
): Promise<ChatConversation | null> {
const current = synchronizeAccess(context);
Iif (!current || !conversationId) {
rejectOperation("当前没有可关闭的客服会话。");
return null;
}
if (current.state.pendingSend) {
rejectOperation(
"仍有一条客服回复结果未知。必须先使用原客户端消息键确认回复，再关闭会话。",
);
return null;
}
Iif (
pendingOperation.value
&& (
pendingOperation.value.kind !== "close"
|| pendingOperation.value.conversationId !== conversationId
)
) {
keepOperationUnknown(
"上一项客服操作尚未确认，不能对另一会话发起新的认领或关闭。",
);
return null;
}
beginOperation("close", conversationId);
const result = await current.controller.closeConversation(conversationId);
Iif (!workspaceIsCurrent(current)) {
return null;
}
Eif (result?.status === "CLOSED") {
acceptOperation(
"Chat 权威会话事实已确认 CLOSED，历史消息继续只读保留。",
);
return result;
}
keepOperationUnknown(
"关闭结果尚未确认。页面没有显示成功，只允许对同一会话重试关闭。",
);
return null;
}
function retryPendingOperation(
context: AdminChatAccessContext,
): Promise<ChatConversation | null> {
const pending = pendingOperation.value;
if (!pending) {
rejectOperation("当前没有可重试的客服操作。");
return Promise.resolve(null);
}
return pending.kind === "claim"
? claimConversation(context, pending.conversationId)
: closeConversation(context, pending.conversationId);
}
async function sendText(
context: AdminChatAccessContext,
content: string,
): Promise<ChatMessage | null> {
const current = synchronizeAccess(context);
Iif (!current) {
return null;
}
Iif (pendingOperation.value) {
current.state.sendError =
"客服认领或关闭结果尚未确认，当前工作区不会发送新回复。";
return null;
}
const result = await current.controller.sendText(content);
return workspaceIsCurrent(current) ? result : null;
}
async function retryPendingSend(
context: AdminChatAccessContext,
): Promise<ChatMessage | null> {
const current = synchronizeAccess(context);
Iif (!current) {
return null;
}
const result = await current.controller.retryPendingSend();
return workspaceIsCurrent(current) ? result : null;
}
async function loadOlder(
context: AdminChatAccessContext,
): Promise<ChatMessage[]> {
const current = synchronizeAccess(context);
if (!current) {
return [];
}
const result = await current.controller.loadOlder();
return workspaceIsCurrent(current) ? result : [];
}
async function retryRead(
context: AdminChatAccessContext,
): Promise<ChatReadFact | null> {
const current = synchronizeAccess(context);
return current ? markLatestRead(current) : null;
}
function restartRealtime(context: AdminChatAccessContext) {
const current = synchronizeAccess(context);
current?.controller.restartRealtime();
}
function resetOperationNotice() {
if (pendingOperation.value) {
return;
}
operationPhase.value = "idle";
operationMessage.value = null;
}
return {
operatorId,
conversations,
activeConversationId,
activeConversation,
messages,
nextBeforeSequence,
hasMore,
loadingConversations,
loadingMessages,
loadingOlder,
sending,
claimingConversationId,
closingConversationId,
error,
sendError,
sendUnknown,
readError,
realtimeStatus,
realtimeMessage,
pendingSend,
assignedToMe,
assignedToOther,
operationPhase,
operationMessage,
pendingOperation,
operationBlocked,
canRetryOperation,
synchronizeAccess,
refresh,
start,
stop,
updateAccess,
updateRoute,
claimConversation,
closeConversation,
retryPendingOperation,
sendText,
retryPendingSend,
loadOlder,
retryRead,
restartRealtime,
resetOperationNotice,
};
});
|