UI - Adding "Download latest HTML snapshot" from Edit Watch > Stats page for easier debugging

2025-10-31 14:47:21 +00:00 · 2024-07-21 17:31:57 +02:00
3 changed files with 35 additions and 0 deletions
--- a/changedetectionio/flask_app.py
+++ b/changedetectionio/flask_app.py
@@ -1369,6 +1369,30 @@ def changedetection_app(config=None, datastore_o=None):
        except FileNotFoundError:
            abort(404)

+    @app.route("/edit/<string:uuid>/get-html", methods=['GET'])
+    @login_optionally_required
+    def watch_get_latest_html(uuid):
+        from io import BytesIO
+        from flask import send_file
+        import brotli
+
+        watch = datastore.data['watching'].get(uuid)
+        if watch and os.path.isdir(watch.watch_data_dir):
+            latest_filename = list(watch.history.keys())[0]
+            html_fname = os.path.join(watch.watch_data_dir, f"{latest_filename}.html.br")
+            if html_fname.endswith('.br'):
+                # Read and decompress the Brotli file
+                with open(html_fname, 'rb') as f:
+                    decompressed_data = brotli.decompress(f.read())
+
+                buffer = BytesIO(decompressed_data)
+
+                return send_file(buffer, as_attachment=True, download_name=f"{latest_filename}.html", mimetype='text/html')
+
+
+        # Return a 500 error
+        abort(500)
+
    @app.route("/form/add/quickwatch", methods=['POST'])
    @login_optionally_required
    def form_quick_watch_add():
--- a/changedetectionio/templates/edit.html
+++ b/changedetectionio/templates/edit.html
@@ -479,6 +479,12 @@ Unavailable") }}
                        </tr>
                        </tbody>
                    </table>
+                    {% if watch.history_n %}
+                        <p>
+                             <a href="{{url_for('watch_get_latest_html', uuid=uuid)}}" class="pure-button button-small">Download latest HTML snapshot</a>
+                        </p>
+                    {% endif %}
+
                </div>
            </div>
            <div id="actions">
--- a/changedetectionio/tests/test_backend.py
+++ b/changedetectionio/tests/test_backend.py
@@ -150,6 +150,11 @@ def test_check_basic_change_detection_functionality(client, live_server, measure
    res = client.get(url_for("index"))
    assert b'preview/' in res.data

+
+    # Check the 'get latest snapshot works'
+    res = client.get(url_for("watch_get_latest_html", uuid=uuid))
+    assert b'<head><title>head title</title></head>' in res.data
+
    #
    # Cleanup everything
    res = client.get(url_for("form_delete", uuid="all"), follow_redirects=True)