Let's make (git) history!

handlers/handlerpage.cpp

@@ -0,0 +1,90 @@
+/* Copyright (c) 2018 Albert S.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "handlerpage.h"
+
+Response HandlerPage::handle(const Request &r)
+{
+	std::string pagename = r.get("page");
+	auto pageDao = this->database->createPageDao();
+	if(pagename.empty())
+	{
+		return errorResponse("No page given", "No page given to request");
+	}
+
+	if(pageMustExist() && !pageDao->exists(pagename))
+	{
+		std::string createlink = this->urlProvider->editPage(pagename);
+		return errorResponse(
+			"Page not found",
+			"The requested page was not found. Do you want to <a href=\"" + createlink + "\">create</a> it?", 404);
+	}
+
+	if(!canAccess(pagename))
+	{
+		return errorResponse("Permission denied", accessErrorMessage());
+	}
+
+	return this->handleRequest(*pageDao, pagename, r);
+}
+
+std::string HandlerPage::accessErrorMessage()
+{
+	return "You don't have permission to access this page";
+}
+
+bool HandlerPage::pageMustExist()
+{
+	return true;
+}
+
+void HandlerPage::setPageVars(TemplatePage &page, std::string pagename)
+{
+	setGeneralVars(page);
+
+	if(!pagename.empty())
+	{
+		std::string headerlinks;
+		TemplatePage &headerlink = this->templ->getPage("_headerlink");
+		auto addHeaderLink = [&headerlinks, &headerlink](std::string href, std::string value) {
+			headerlink.setVar("href", href);
+			headerlink.setVar("value", value);
+			headerlinks += headerlink.render();
+		};
+		Permissions &perms = this->userSession->user.permissions;
+
+		if(perms.canEdit())
+		{
+			addHeaderLink(this->urlProvider->editPage(pagename), "Edit");
+			addHeaderLink(this->urlProvider->pageSettings(pagename), "Page settings");
+		}
+		if(perms.canDelete())
+		{
+			addHeaderLink(this->urlProvider->pageDelete(pagename), "Delete");
+		}
+		if(perms.canSeePageHistory())
+		{
+			addHeaderLink(this->urlProvider->pageHistory(pagename), "Show history");
+		}
+
+		page.setVar("headerlinks", headerlinks);
+		page.setVar("page", pagename);
+	}
+}