81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
// 聊天消息工具函数，承接主消息渲染脚本里可独立复用的判断逻辑。
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/**
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* 判断图片消息是否已经超过前端允许展示的保留期。
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*
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* @param {Record<string, any>|null|undefined} message 聊天消息
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* @param {number} retentionDays 图片保留天数
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* @param {number} nowTimestamp 当前时间戳
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* @returns {boolean}
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*/
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export function isExpiredChatImageMessage(
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message,
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retentionDays = Number.parseInt(window.chatContext?.chatImageRetentionDays || 3, 10),
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nowTimestamp = Date.now(),
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) {
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if (!message) {
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return false;
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}
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if (message.message_type === "expired_image") {
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return true;
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}
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if (message.message_type !== "image") {
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return false;
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}
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if (!message.image_url || !message.image_thumb_url) {
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return true;
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}
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const sentAtText = String(message.sent_at || "").replace(" ", "T");
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const sentAt = sentAtText ? new Date(sentAtText) : null;
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if (!sentAt || Number.isNaN(sentAt.getTime())) {
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return false;
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}
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return nowTimestamp >= sentAt.getTime() + retentionDays * 24 * 60 * 60 * 1000;
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}
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/**
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* 只清理当前浏览器的聊天窗口，并记录本地清屏的最大消息 ID。
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*
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* @param {number|string} roomId 房间 ID
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* @param {number|string} maxMessageId 当前已接收最大消息 ID
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* @returns {void}
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*/
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export function localClearScreen(roomId = window.chatContext?.roomId, maxMessageId = 0) {
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const publicPane = document.getElementById("chat-messages-container");
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const privatePane = document.getElementById("chat-messages-container2");
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if (publicPane) {
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publicPane.innerHTML = "";
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}
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if (privatePane) {
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privatePane.innerHTML = "";
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}
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// 刷新页面时只恢复本地清屏点之后的新消息，避免旧消息重新回流。
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localStorage.setItem(`local_clear_msg_id_${roomId}`, maxMessageId);
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const notice = document.createElement("div");
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notice.className = "msg-line";
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const now = new Date();
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const timeText = [
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now.getHours().toString().padStart(2, "0"),
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now.getMinutes().toString().padStart(2, "0"),
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now.getSeconds().toString().padStart(2, "0"),
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].join(":");
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notice.innerHTML = `<span style="color: #64748b; font-weight: bold;">🧹 您已执行本地清屏</span><span class="msg-time">(${timeText})</span>`;
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if (publicPane) {
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publicPane.appendChild(notice);
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publicPane.scrollTop = publicPane.scrollHeight;
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}
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}
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