[proxy] make Haketilo version accessible to payload scripts

2 files changed, 9 insertions, 1 deletions

diff --git a/src/hydrilla/proxy/policies/js_templates/page_init_script.js.jinja b/src/hydrilla/proxy/policies/js_templates/page_init_script.js.jinja
index 3a8382c..629b008 100644
--- a/src/hydrilla/proxy/policies/js_templates/page_init_script.js.jinja
+++ b/src/hydrilla/proxy/policies/js_templates/page_init_script.js.jinja
@@ -65,6 +65,9 @@ code in a proprietary program, I am not going to enforce this in court.
     }
     const unique_token = decode_jinja("{{ unique_token_encoded }}");
     const assets_base_url = decode_jinja("{{ assets_base_url_encoded }}");
+    window.haketilo_version = JSON.parse(
+        decode_jinja("{{ haketilo_version }}")
+    );
 
     /* Make it possible to serialize an Error object. */
     function error_data_jsonifiable(error) {
diff --git a/src/hydrilla/proxy/policies/payload_resource.py b/src/hydrilla/proxy/policies/payload_resource.py
index cda19ba..70844e6 100644
--- a/src/hydrilla/proxy/policies/payload_resource.py
+++ b/src/hydrilla/proxy/policies/payload_resource.py
@@ -64,11 +64,13 @@ import json
 from threading import Lock
 from base64 import b64encode
 from urllib.parse import quote, parse_qs, urlparse, urlencode, urljoin
+from itertools import takewhile
 
 import jinja2
 
 from ...translations import smart_gettext as _
 from ...url_patterns import ParsedUrl
+from ..._version import version_tuple
 from .. import state
 from .. import http_messages
 from . import base
@@ -279,9 +281,12 @@ class PayloadResourcePolicy(PayloadAwarePolicy):
                 template = jinja_env.get_template('page_init_script.js.jinja')
                 token = self.payload_data.unique_token
                 base_url = self.assets_base_url(request_info.url)
+                ver = [*takewhile(lambda i: isinstance(i, int), version_tuple)]
+                ver_str = json.dumps(ver)
                 js = template.render(
                     unique_token_encoded    = encode_string_for_js(token),
-                    assets_base_url_encoded = encode_string_for_js(base_url)
+                    assets_base_url_encoded = encode_string_for_js(base_url),
+                    haketilo_version        = encode_string_for_js(ver_str)
                 )
 
             return http_messages.ProducedResponse(