From 9a0b62aa1691d0b19101996fd1b4e8a9f127db1b Mon Sep 17 00:00:00 2001
From: Jean-Marie Favreau <j-marie.favreau@uca.fr>
Date: Sat, 14 Sep 2024 14:55:50 +0200
Subject: [PATCH] Mise en cache des CSS de styles

---
 src/agenda_culturel/templatetags/cat_extra.py | 94 ++++++++++---------
 1 file changed, 49 insertions(+), 45 deletions(-)

diff --git a/src/agenda_culturel/templatetags/cat_extra.py b/src/agenda_culturel/templatetags/cat_extra.py
index 6fef4b5..010d867 100644
--- a/src/agenda_culturel/templatetags/cat_extra.py
+++ b/src/agenda_culturel/templatetags/cat_extra.py
@@ -1,5 +1,6 @@
 from django import template
 from django.utils.safestring import mark_safe
+from django.core.cache import cache
 
 from agenda_culturel.models import Category
 import colorsys
@@ -67,59 +68,62 @@ def background_color_adjust_color(color, alpha=1):
 
 @register.simple_tag
 def css_categories():
-    result = '<style type="text/css">'
+    result = cache.get('css_categories')
+    if not result: #
+        result = '<style type="text/css">'
 
-    cats = [
-        {"color": c.color, "css_class": c.css_class()} for c in Category.objects.all()
-    ]
-    cats.append(
-        {"color": Category.default_color, "css_class": Category.default_css_class}
-    )
-
-    for c in cats:
-        result += "." + c["css_class"] + " {"
-        result += background_color_adjust_color(
-            adjust_lightness_saturation(c["color"], 0.2, 0.8), 0.8
+        cats = [
+            {"color": c.color, "css_class": c.css_class()} for c in Category.objects.all()
+        ]
+        cats.append(
+            {"color": Category.default_color, "css_class": Category.default_css_class}
         )
-        result += "}"
 
-        result += "*:hover>." + c["css_class"] + " {"
-        result += background_color_adjust_color(
-            adjust_lightness_saturation(c["color"], 0.02, 1.0)
-        )
-        result += "}"
+        for c in cats:
+            result += "." + c["css_class"] + " {"
+            result += background_color_adjust_color(
+                adjust_lightness_saturation(c["color"], 0.2, 0.8), 0.8
+            )
+            result += "}"
 
-        result += "." + c["css_class"] + ".circ-cat, "
-        result += "form ." + c["css_class"] + ", "
-        result += ".selected ." + c["css_class"] + " {"
-        result += background_color_adjust_color(c["color"])
-        result += "}"
+            result += "*:hover>." + c["css_class"] + " {"
+            result += background_color_adjust_color(
+                adjust_lightness_saturation(c["color"], 0.02, 1.0)
+            )
+            result += "}"
 
-        result += "." + c["css_class"] + ".circ-cat.recurrent, "
-        result += ".selected.recurrent ." + c["css_class"] + " {"
-        result += "background: none;"
-        result += "color: " + adjust_color(c["color"]) + ";"
-        result += "}"
+            result += "." + c["css_class"] + ".circ-cat, "
+            result += "form ." + c["css_class"] + ", "
+            result += ".selected ." + c["css_class"] + " {"
+            result += background_color_adjust_color(c["color"])
+            result += "}"
 
-        result += "." + c["css_class"] + ".circ-cat:hover, "
-        result += "form ." + c["css_class"] + ":hover, "
-        result += "a.selected:hover ." + c["css_class"] + " {"
-        result += background_color_adjust_color(
-            adjust_lightness_saturation(c["color"], 0.2, 1.2)
-        )
-        result += "}"
+            result += "." + c["css_class"] + ".circ-cat.recurrent, "
+            result += ".selected.recurrent ." + c["css_class"] + " {"
+            result += "background: none;"
+            result += "color: " + adjust_color(c["color"]) + ";"
+            result += "}"
 
-        result += "." + c["css_class"] + ".circ-cat.recurrent:hover, "
-        result += ".selected.recurrent:hover ." + c["css_class"] + " {"
-        result += "background: none;"
-        result += (
-            "color: "
-            + adjust_color(adjust_lightness_saturation(c["color"], 0.2, 1.2))
-            + ";"
-        )
-        result += "}"
+            result += "." + c["css_class"] + ".circ-cat:hover, "
+            result += "form ." + c["css_class"] + ":hover, "
+            result += "a.selected:hover ." + c["css_class"] + " {"
+            result += background_color_adjust_color(
+                adjust_lightness_saturation(c["color"], 0.2, 1.2)
+            )
+            result += "}"
 
-    result += "</style>"
+            result += "." + c["css_class"] + ".circ-cat.recurrent:hover, "
+            result += ".selected.recurrent:hover ." + c["css_class"] + " {"
+            result += "background: none;"
+            result += (
+                "color: "
+                + adjust_color(adjust_lightness_saturation(c["color"], 0.2, 1.2))
+                + ";"
+            )
+            result += "}"
+
+        result += "</style>"
+        cache.set('css_categories', result, 3600) # 1 hour
     return mark_safe(result)