From 534d9f74e7df03bc600b9767d97353464deacf36 Mon Sep 17 00:00:00 2001
From: Albert S <mail@quitesimple.org>
Date: Sat, 24 Apr 2021 12:10:57 +0200
Subject: [PATCH] ParserMarkdown: Implement processLink

---
 parsermarkdown.cpp | 41 ++++++++++++++++++++++++++++++++++++++---
 parsermarkdown.h   |  5 +++--
 2 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/parsermarkdown.cpp b/parsermarkdown.cpp
index 1a2e890..407a8b5 100644
--- a/parsermarkdown.cpp
+++ b/parsermarkdown.cpp
@@ -1,8 +1,36 @@
 #include "parsermarkdown.h"
+#include "logger.h"
+#include "htmllink.h"
+
+std::string ParserMarkdown::processLink(const PageDao &pageDao, UrlProvider &urlProvider, std::smatch &match) const
+{
+	std::string inner = match.str(1);
+	std::string link = match.str(2);
+	HtmlLink htmllink;
+	htmllink.href = link;
+	htmllink.innervalue = inner;
+
+	if(link.find("http://") == 0 || link.find("https://") == 0)
+	{
+		return htmllink.render();
+	}
+
+	if(pageDao.exists(link))
+	{
+		htmllink.cssclass = "exists";
+	}
+	else
+	{
+		htmllink.cssclass = "notexists";
+	}
+
+	htmllink.href = urlProvider.page(htmllink.href);
+
+	return htmllink.render();
+}
 
 ParserMarkdown::ParserMarkdown()
 {
-
 }
 
 std::vector<Headline> ParserMarkdown::extractHeadlines(std::string content) const
@@ -21,6 +49,13 @@ std::string ParserMarkdown::parse(const PageDao &pagedao, UrlProvider &provider,
 {
 	std::shared_ptr<maddy::ParserConfig> config = std::make_shared<maddy::ParserConfig>();
 	auto maddy = std::make_shared<maddy::Parser>(config);
-	std::stringstream s { content };
-	return maddy->Parse(s);
+
+	auto linkParser = std::make_shared<maddy::LinkParser>();
+	linkParser->setCallback([&](std::smatch &match) { return processLink(pagedao, provider, match); });
+	maddy->setLinkParser(linkParser);
+	// TODO: hack because the parser breaks if there is an \r
+	content = utils::strreplace(content, "\r", "");
+	std::stringstream s{content};
+	std::string result = maddy->Parse(s);
+	return result;
 }
diff --git a/parsermarkdown.h b/parsermarkdown.h
index 4ec30f5..da284fc 100644
--- a/parsermarkdown.h
+++ b/parsermarkdown.h
@@ -5,10 +5,11 @@
 #include "maddy/parser.h"
 class ParserMarkdown : public Parser
 {
-public:
-	ParserMarkdown();
+private:
+	std::string processLink(const PageDao &pageDao, UrlProvider &urlProvider, std::smatch &match) const;
 
 public:
+	ParserMarkdown();
 	std::vector<Headline> extractHeadlines(std::string content) const;
 	std::string parse(const PageDao &pagedao, UrlProvider &provider, std::string content) const;
 };