Template: Use MapCache, getPage(): Return value, not reference

template.h

@@ -8,16 +8,17 @@
 #include "response.h"
 #include "searchresult.h"
 #include "revision.h"
+#include "cache/mapcache.h"
 class Template
 {
   private:
 	ConfigVariableResolver *configVarResolver;
 	ConfigUrls *configUrls;
+	MapCache<TemplatePage> *pageCache;
 
 	std::string templateprefix;
 	std::string templatepath;
 
-	std::map<std::string, TemplatePage> pagesMap;
 	std::string resolveIncludes(std::string_view content);
 
 	std::string getPartPath(std::string_view partname);
@@ -27,12 +28,9 @@ class Template
 
   public:
 	Template(std::string templateprefix, std::string templatepath, ConfigUrls &configUrls,
-			 ConfigVariableResolver &configVarsResolver);
-	/* TODO: returning this as a reference is by no means a risk free business,
-		because between requests, different vars can be set conditionally,
-		thus creating a mess
-	*/
-	TemplatePage &getPage(const std::string &pagename);
+			 ConfigVariableResolver &configVarsResolver, MapCache<TemplatePage> &pageCache);
+
+	TemplatePage getPage(const std::string &pagename);
 
 	std::string renderSearch(const std::vector<std::string> &results,
 							 std::function<std::string(std::string)> callback) const;