90d834695f
- Removed debug display for unread count in ConversationListRow to clean up UI. - Updated updateConversationCacheUnreadCount to optionally handle myLastReadSeq for better synchronization of read status. - Refactored message service to unify offset and cursor pagination methods, improving data fetching consistency. - Introduced a new method to normalize unread counts based on read cursor, ensuring accurate display of unread messages. - Consolidated conversation list source implementations to simplify remote data fetching logic.
115 lines
3.4 KiB
TypeScript
115 lines
3.4 KiB
TypeScript
/**
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* 会话列表数据源抽象：游标、常规页码、SQLite 等实现同一契约，MessageManager 只依赖接口。
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*/
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import { ConversationResponse } from '../types/dto';
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import { messageService } from '../services/messageService';
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import { getConversationListCache } from '../services/database';
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export const CONVERSATION_LIST_PAGE_SIZE = 20;
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/** 单次拉取结果（一页或一批） */
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export interface ConversationListPage {
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items: ConversationResponse[];
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/** 在当前源上是否还能再 loadNext 一页 */
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hasMore: boolean;
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}
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/**
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* 分页式会话列表源：restart 后开始新序列；首次 loadNext 为第一页，之后为后续页。
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*/
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export interface IConversationListPagedSource {
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restart(): void;
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loadNext(): Promise<ConversationListPage>;
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/** 至少成功 loadNext 过一次且仍有下一页时为 true */
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readonly hasMore: boolean;
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}
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/**
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* 远端会话列表（offset 与 cursor 共用实现）
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* 均通过 messageService.fetchRemoteConversationListPage 拉取并落库，行为一致。
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*/
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export class NetworkRemoteConversationListPagedSource implements IConversationListPagedSource {
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private nextPage = 1;
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private nextCursor: string | null = null;
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private hasMoreAfterLastLoad = false;
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private loadedOnce = false;
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private readonly pageSize: number;
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private readonly mode: RemoteConversationListSourceKind;
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constructor(
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mode: RemoteConversationListSourceKind,
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pageSize: number = CONVERSATION_LIST_PAGE_SIZE
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) {
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this.mode = mode;
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this.pageSize = pageSize;
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}
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restart(): void {
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this.nextPage = 1;
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this.nextCursor = null;
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this.hasMoreAfterLastLoad = false;
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this.loadedOnce = false;
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}
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get hasMore(): boolean {
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return this.loadedOnce && this.hasMoreAfterLastLoad;
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}
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async loadNext(): Promise<ConversationListPage> {
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const result = await messageService.fetchRemoteConversationListPage({
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mode: this.mode,
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pageSize: this.pageSize,
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...(this.mode === 'offset'
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? { page: this.nextPage }
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: { cursor: this.nextCursor }),
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});
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this.hasMoreAfterLastLoad = result.hasMore;
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if (this.mode === 'offset') {
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this.nextPage = result.nextPage ?? this.nextPage + 1;
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} else {
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this.nextCursor = result.nextCursor ?? null;
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}
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this.loadedOnce = true;
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return { items: result.items, hasMore: result.hasMore };
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}
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}
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/** SQLite 会话列表缓存（单批，无后续页） */
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export class SqliteConversationListPagedSource implements IConversationListPagedSource {
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private consumed = false;
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restart(): void {
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this.consumed = false;
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}
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get hasMore(): boolean {
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return false;
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}
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async loadNext(): Promise<ConversationListPage> {
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if (this.consumed) {
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return { items: [], hasMore: false };
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}
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this.consumed = true;
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try {
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const items = await getConversationListCache();
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return { items, hasMore: false };
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} catch (e) {
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console.warn('[SqliteConversationListPagedSource] 读取会话列表缓存失败:', e);
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return { items: [], hasMore: false };
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}
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}
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}
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/** 远端会话列表分页策略 */
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export type RemoteConversationListSourceKind = 'cursor' | 'offset';
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export function createRemoteConversationListSource(
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kind: RemoteConversationListSourceKind,
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pageSize: number = CONVERSATION_LIST_PAGE_SIZE
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): IConversationListPagedSource {
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return new NetworkRemoteConversationListPagedSource(kind, pageSize);
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}
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