75 lines
2.9 KiB
TypeScript
75 lines
2.9 KiB
TypeScript
// ====================================================================
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// IM 会话 / 撤回展示 utility
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// ====================================================================
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// 基于 conversation 上下文 + sender 信息实时算"展示文案"。
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// 1. 发送人名一律由 utils/user.getSenderDisplayName 实时算，本文件只负责拼"撤回 tip / 摘要"等文案。
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// 2. fallbackName 由调用方传入（典型来源：Conversation.lastSenderDisplayName 快照），透传到 getSenderDisplayName 内部，算不出真名时兜底
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// ====================================================================
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import { ImMessageType, isGroupNotification } from './constants'
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import { parseMessage, resolveTipText, type TextMessage } from './message'
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import { getSenderDisplayName, resolveGroupNotificationText } from './user'
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import type { Message } from '../home/types'
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/** 会话主键：`type-targetId` 拼成稳定字符串，给 v-for :key、active 比对、map key 等场景共用 */
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export function getConversationKey(conversation: { type: number; targetId: number }): string {
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return `${conversation.type}-${conversation.targetId}`
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}
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/** 撤回提示文案：自己撤回固定文案，对方撤回带 sender 名（实时算 + fallbackName 兜底） */
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export function buildRecallTip(
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senderId: number,
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selfSend: boolean,
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conversationType: number,
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conversationTargetId: number,
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fallbackName?: string
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): string {
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if (selfSend) {
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return '你撤回了一条消息'
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}
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const senderDisplayName = getSenderDisplayName(
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senderId,
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conversationType,
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conversationTargetId,
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fallbackName
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)
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return `${senderDisplayName || '对方'} 撤回了一条消息`
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}
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/** 会话列表最后一条摘要：RECALL 走 buildRecallTip + fallbackName；其它按消息类型派生 */
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export function resolveConversationLastContent(
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message: Message,
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conversationType: number,
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conversationTargetId: number,
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fallbackName?: string
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): string {
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switch (message.type) {
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case ImMessageType.IMAGE:
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return '[图片]'
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case ImMessageType.FILE:
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return '[文件]'
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case ImMessageType.VOICE:
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return '[语音]'
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case ImMessageType.VIDEO:
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return '[视频]'
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case ImMessageType.RECALL:
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return buildRecallTip(
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message.senderId,
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message.selfSend,
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conversationType,
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conversationTargetId,
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fallbackName
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)
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case ImMessageType.TEXT:
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return parseMessage<TextMessage>(message.content)?.content ?? ''
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case ImMessageType.TIP_TEXT:
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// TIP_TEXT 后端常发裸字符串（私聊好友建立 / 解除等），不能按 TextMessage JSON 解析，否则摘要变空
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return resolveTipText(message.content)
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default:
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if (isGroupNotification(message.type)) {
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return resolveGroupNotificationText(message)
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}
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return parseMessage<TextMessage>(message.content)?.content ?? ''
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}
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}
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