feat(attachments): render inline cid images in place, not as attachments

Inline images (referenced by src="cid:…") are now classified at ingest and kept out of the downloadable attachment lists, RSS/Atom enclosures, and the API — while still stored in R2 and cleaned up with the email. Fixes the admin email preview, which injected raw HTML into the data: iframe so cid refs never resolved; it now rewrites them to absolute /files URLs. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-21 06:13:48 +00:00 · 2026-05-24 14:39:59 +02:00
parent be45e70571
commit 5137637181
14 changed files with 277 additions and 31 deletions
@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { processEmailContent } from "./html-processor";
+import { processEmailContent, extractInlineCids } from "./html-processor";
 import type { AttachmentData } from "../types";

 describe("processEmailContent — body extraction", () => {
@@ -196,3 +196,23 @@ describe("processEmailContent — inline cid: rewriting", () => {
    expect(result).toContain('src="https://example.com/a.png"');
  });
 });
+
+describe("extractInlineCids", () => {
+  it("collects normalized cids referenced by cid: image sources", () => {
+    const html = '<body><img src="cid:ii_abc"/><img src="CID:ii_def"/></body>';
+    expect(extractInlineCids(html)).toEqual(new Set(["ii_abc", "ii_def"]));
+  });
+
+  it("ignores non-cid sources", () => {
+    const html = '<body><img src="https://example.com/a.png"/></body>';
+    expect(extractInlineCids(html).size).toBe(0);
+  });
+
+  it("returns an empty set for plain text", () => {
+    expect(extractInlineCids("just text, no html").size).toBe(0);
+  });
+
+  it("returns an empty set for empty input", () => {
+    expect(extractInlineCids("").size).toBe(0);
+  });
+});