Add download Markdown as PDFv1.7

1 files changed, 13 insertions, 0 deletions

diff --git a/whiteboard.cpp b/whiteboard.cpp
index 88f4f3b..220d85e 100644
--- a/whiteboard.cpp
+++ b/whiteboard.cpp
@@ -34,11 +34,13 @@
 #include <boost/asio/ip/tcp.hpp>
 #include <boost/asio/signal_set.hpp>
 #include <boost/asio/strand.hpp>
+#include <boost/process.hpp>
 
 #include <fmt/core.h>
 
 #include "libreichwein/base64.h"
 #include "libreichwein/file.h"
+#include "libreichwein/tempfile.h"
 #include "libreichwein/xml.h"
 
 #include "config.h"
@@ -50,6 +52,7 @@ namespace pt = boost::property_tree;
 using namespace std::string_literals;
 using namespace std::placeholders;
 namespace fs = std::filesystem;
+namespace bp = boost::process;
 
 namespace {
 
@@ -389,6 +392,16 @@ public:
    } else if (command == "getstats") {
     setup_stats_timer();
     return stats_xml();
+   } else if (command == "pdf") {
+    std::string id {xml.get<std::string>("request.id")};
+    Reichwein::Tempfile mdFilePath{".md"};
+    Reichwein::File::setFile(mdFilePath.getPath(), m_storage.getDocument(id));
+    Reichwein::Tempfile pdfFilePath{".pdf"};
+    int system_result{bp::system("/usr/bin/pandoc", mdFilePath.getPath().generic_string(), "-o", pdfFilePath.getPath().generic_string())};
+    if (system_result)
+     throw std::runtime_error("pandoc returned: "s + std::to_string(system_result));
+    std::string pdfdata{Reichwein::File::getFile(pdfFilePath.getPath())};
+    return make_xml({{"type", "pdf"}, {"pdf", Reichwein::Base64::encode64(pdfdata)}});
    } else {
     throw std::runtime_error("Bad command: "s + command);
    }