fix(chat): export the complete conversation across PDF pages (#6921)

2026-11-03 11:42:23 +01:00 · 2026-11-03 00:30:07 +00:00
parent 596e1421e4
commit 1e34f938cc
4 changed files with 118 additions and 16 deletions
@@ -0,0 +1,61 @@
+"""The shipped CSS must print every message beyond the screen viewport."""
+
+import json
+import os
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+from pypdf import PdfReader
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+@pytest.mark.skipif(not shutil.which("node"), reason="node is required for Chromium printing")
+def test_chat_print_preserves_the_complete_transcript(tmp_path):
+    script = r'''
+      import fs from 'node:fs';
+      import path from 'node:path';
+      import { chromium } from 'playwright';
+      const origin = process.env.ODYSSEUS_TEST_STATIC_ORIGIN;
+      const source = fs.readFileSync('static/index.html', 'utf8');
+      const links = [...source.matchAll(/<link\b[^>]*rel="stylesheet"[^>]*>/g)]
+        .map(match => match[0]).join('\n');
+      const messages = Array.from({length: 24}, (_, index) => {
+        const marker = 'EXPORTSENTINEL' + String(index + 1).padStart(2, '0');
+        const paragraphs = Array.from({length:4}, () =>
+          '<p>This synthetic message must survive printing beyond the screen viewport. '
+          + 'Every paragraph belongs to the saved conversation.</p>').join('');
+        return `<div class="msg ${index % 2 ? 'msg-ai' : 'msg-user'}"><div class="body"><p>${marker}</p>${paragraphs}</div></div>`;
+      }).join('');
+      const browser = await chromium.launch({headless:true});
+      try {
+        const results=[];
+        for (const [layout,viewport] of [['desktop',{width:1440,height:1000}],['mobile',{width:390,height:844}]]) {
+          const page=await browser.newPage({viewport});
+          await page.goto(origin+'/static/css/00-tokens.css');
+          await page.setContent(`<html><head>${links}</head><body><main class="chat-container"><div id="chat-history">${messages}</div></main></body></html>`,{waitUntil:'load'});
+          await page.evaluate(()=>document.fonts.ready);
+          const file=path.join(process.env.ODYSSEUS_PDF_OUTPUT_DIR,layout+'.pdf');
+          await page.pdf({path:file,format:'A4',printBackground:true});
+          results.push({layout,file});
+          await page.close();
+        }
+        console.log(JSON.stringify(results));
+      } finally {await browser.close();}
+    '''
+    result = subprocess.run(
+        ["node", "--input-type=module", "-e", script], cwd=ROOT,
+        capture_output=True, text=True, timeout=90,
+        env={**os.environ, "ODYSSEUS_PDF_OUTPUT_DIR": str(tmp_path)},
+    )
+    assert result.returncode == 0, result.stderr
+    results = json.loads(result.stdout)
+    assert {row["layout"] for row in results} == {"desktop", "mobile"}
+    for row in results:
+        pdf = PdfReader(row["file"])
+        text = "".join("".join(page.extract_text().split()) for page in pdf.pages)
+        assert len(pdf.pages) > 1, row["layout"]
+        for index in range(1, 25):
+            assert f"EXPORTSENTINEL{index:02d}" in text, (row["layout"], index)