50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
// 对话输入草稿的 localStorage 封装。按用户隔离、按 task 保存；特殊 key
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// "__new__" 表示尚未创建 task 的“新对话”入口。
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export const NEW_CHAT_DRAFT_ID = "__new__";
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const STORAGE_PREFIX = "zcbot.chat-drafts.v1.";
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const MAX_DRAFTS = 50;
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export function chatDraftStorageKey(userId) {
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return userId ? STORAGE_PREFIX + userId : "";
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}
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function readAll(storage, userId) {
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const key = chatDraftStorageKey(userId);
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if (!key) return {};
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try {
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const parsed = JSON.parse(storage.getItem(key) || "{}");
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return parsed && typeof parsed === "object" && !Array.isArray(parsed) ? parsed : {};
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} catch (_) {
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return {};
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}
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}
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export function readChatDraft(storage, userId, draftId) {
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const item = readAll(storage, userId)[draftId];
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return item && typeof item.text === "string" ? item.text : "";
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}
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export function writeChatDraft(storage, userId, draftId, text, now = Date.now()) {
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const key = chatDraftStorageKey(userId);
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if (!key || !draftId) return;
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const drafts = readAll(storage, userId);
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if (!text || !text.trim()) {
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delete drafts[draftId];
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} else {
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drafts[draftId] = { text, updatedAt: now };
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}
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const entries = Object.entries(drafts)
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.sort((a, b) => Number(b[1]?.updatedAt || 0) - Number(a[1]?.updatedAt || 0))
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.slice(0, MAX_DRAFTS);
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try {
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if (entries.length) storage.setItem(key, JSON.stringify(Object.fromEntries(entries)));
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else storage.removeItem(key);
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} catch (_) {
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// 隐私模式、WebView 禁用存储或 quota 满时静默跳过持久化，不阻断输入。
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}
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}
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export function clearChatDraft(storage, userId, draftId) {
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writeChatDraft(storage, userId, draftId, "");
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}
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