feat(ai): export assistant analysis result as markdown

apps/desktop/src/lib/export/aiAnalysisExport.ts

@@ -0,0 +1,28 @@
+import { compactLocalTimestamp, sanitizeExportBaseName } from "./saveTextFile";
+
+export interface BuildAiAnalysisExportInput {
+  connectionName?: string;
+  content: string;
+  analysisLabel: string;
+  dateLabel: string;
+}
+
+export interface BuildAiAnalysisExportOutput {
+  markdown: string;
+  defaultFileName: string;
+}
+
+export function buildAiAnalysisExport(input: BuildAiAnalysisExportInput): BuildAiAnalysisExportOutput | null {
+  if (!input.content.trim()) return null;
+
+  const rawName = input.connectionName || "";
+  const sanitizedName = sanitizeExportBaseName(rawName) || "ai";
+  const displayName = rawName || "AI";
+
+  const headerLines = [`# ${displayName} · ${input.analysisLabel}`, `${input.dateLabel}`, ""];
+  const markdown = headerLines.join("\n") + input.content;
+
+  const defaultFileName = `${sanitizedName}_${compactLocalTimestamp()}.md`;
+
+  return { markdown, defaultFileName };
+}

apps/desktop/src/lib/export/saveTextFile.ts

@@ -0,0 +1,51 @@
+import { isTauriRuntime } from "@/lib/backend/tauriRuntime";
+
+export async function saveTextFile(content: string, defaultFileName: string, filterName: string, filterExt: string) {
+  if (isTauriRuntime()) {
+    const { save } = await import("@tauri-apps/plugin-dialog");
+    const { writeTextFile } = await import("@tauri-apps/plugin-fs");
+    const path = await save({
+      defaultPath: defaultFileName,
+      filters: [{ name: filterName, extensions: [filterExt] }],
+    });
+    if (path) await writeTextFile(path, content);
+    return;
+  }
+
+  const blob = new Blob([content], { type: "text/plain;charset=utf-8" });
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement("a");
+  a.href = url;
+  a.download = defaultFileName;
+  a.click();
+  URL.revokeObjectURL(url);
+}
+
+export function sanitizeExportBaseName(value: string): string {
+  return replaceControlCharacters(
+    value
+      .trim()
+      .replace(/\.[sS][qQ][lL]$/, "")
+      .replace(/[<>:"/\\|?*]/g, "_"),
+    "_",
+  )
+    .replace(/\s+/g, " ")
+    .replace(/[._\s-]+$/g, "")
+    .slice(0, 120);
+}
+
+function replaceControlCharacters(value: string, replacement: string): string {
+  return Array.from(value)
+    .map((char) => (char.charCodeAt(0) < 32 ? replacement : char))
+    .join("");
+}
+
+export function compactLocalTimestamp(date = new Date()): string {
+  const yy = String(date.getFullYear() % 100).padStart(2, "0");
+  const month = String(date.getMonth() + 1).padStart(2, "0");
+  const day = String(date.getDate()).padStart(2, "0");
+  const hour = String(date.getHours()).padStart(2, "0");
+  const minute = String(date.getMinutes()).padStart(2, "0");
+  const second = String(date.getSeconds()).padStart(2, "0");
+  return `${yy}${month}${day}${hour}${minute}${second}`;
+}