dekun
67 lines
1.8 KiB
TypeScript
67 lines
1.8 KiB
TypeScript
import {
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HISTORY_MAX_ITEMS,
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HISTORY_STORAGE_KEY,
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type CalcHistoryEntry,
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} from "@/lib/history/types";
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export function loadHistory(): CalcHistoryEntry[] {
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if (typeof window === "undefined") {
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return [];
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}
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try {
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const raw = localStorage.getItem(HISTORY_STORAGE_KEY);
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if (!raw) {
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return [];
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}
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const parsed = JSON.parse(raw) as CalcHistoryEntry[];
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return 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 saveHistoryEntry(
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entry: Omit<CalcHistoryEntry, "id" | "createdAt">,
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): CalcHistoryEntry {
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const full: CalcHistoryEntry = {
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...entry,
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id: crypto.randomUUID(),
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createdAt: new Date().toISOString(),
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};
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const list = [full, ...loadHistory()].slice(0, HISTORY_MAX_ITEMS);
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localStorage.setItem(HISTORY_STORAGE_KEY, JSON.stringify(list));
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return full;
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}
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export function deleteHistoryEntry(id: string): void {
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const list = loadHistory().filter((e) => e.id !== id);
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localStorage.setItem(HISTORY_STORAGE_KEY, JSON.stringify(list));
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}
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export function downloadMarkdown(content: string, filename: string) {
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const blob = new Blob([content], { type: "text/markdown;charset=utf-8" });
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const url = URL.createObjectURL(blob);
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const a = document.createElement("a");
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a.href = url;
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a.download = filename.endsWith(".md") ? filename : `${filename}.md`;
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a.click();
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URL.revokeObjectURL(url);
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}
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export function buildHistoryMarkdown(entry: CalcHistoryEntry): string {
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const lines = [
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`# ${entry.title}`,
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"",
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`- 类型：${entry.mode}`,
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`- 时间：${new Date(entry.createdAt).toLocaleString("zh-CN")}`,
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`- 问事：${entry.question}`,
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"",
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...Object.entries(entry.meta).map(([k, v]) => `- ${k}：${v}`),
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"",
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"---",
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"",
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entry.completion,
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];
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return lines.join("\n");
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}
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