From fe7c20fe9ea2cea6b904c66a78e252ed8eb2f6c3 Mon Sep 17 00:00:00 2001
From: tastytea <tastytea@tastytea.de>
Date: Tue, 3 Apr 2018 00:04:47 +0200
Subject: [PATCH] Added Easy::get_link()

---
 CMakeLists.txt       |  2 +-
 src/easy/easy.cpp    | 33 +++++++++++++++++++++++++++++++++
 src/easy/easy.hpp    | 30 ++++++++++++++++++++++++++++++
 src/mastodon-cpp.hpp | 19 ++++++++++---------
 4 files changed, 74 insertions(+), 10 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93b076a..52366d9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 3.7)
 project (mastodon-cpp
-         VERSION 0.8.0
+         VERSION 0.8.1
          LANGUAGES CXX
 )
 
diff --git a/src/easy/easy.cpp b/src/easy/easy.cpp
index f456c4f..86faf3d 100644
--- a/src/easy/easy.cpp
+++ b/src/easy/easy.cpp
@@ -76,3 +76,36 @@ const std::vector<Easy::stream_event>
 
     return vec;
 }
+
+Easy::Link::Link(const string &link_header)
+: _next(0)
+, _prev(0)
+{
+    std::regex renext("max_id=([[:digit:]]*)");
+    std::regex reprev("since_id=([[:digit:]]*)");
+    std::smatch match;
+
+    if (std::regex_search(link_header, match, renext))
+    {
+        _next = std::stoull(match[1].str());
+    }
+    if (std::regex_search(link_header, match, reprev))
+    {
+        _prev = std::stoull(match[1].str());
+    }
+}
+
+const uint_fast64_t Easy::Link::next() const
+{
+    return _next;
+}
+
+const uint_fast64_t Easy::Link::prev() const
+{
+    return _prev;
+}
+
+const Easy::Link Easy::get_link() const
+{
+    return Link(get_header("Link"));
+}
diff --git a/src/easy/easy.hpp b/src/easy/easy.hpp
index e9d75ba..2a54403 100644
--- a/src/easy/easy.hpp
+++ b/src/easy/easy.hpp
@@ -104,6 +104,31 @@ public:
 
     typedef std::pair<event_type, string> stream_event;
 
+    /*!
+     *  @brief  Class to hold the `Link`-header.
+     *  
+     *          Extracts max_id and since_id from the `Link:`-header
+     */
+    class Link
+    {
+    public:
+        explicit Link(const string &link_header);
+
+        /*!
+         *  @brief  Returns max_id
+         */
+        const uint_fast64_t next() const;
+
+        /*!
+         *  @brief  Returns since_id
+         */
+        const uint_fast64_t prev() const;
+
+    private:
+        uint_fast64_t _next;
+        uint_fast64_t _prev;
+    };
+
     /*!
      *  @brief  Constructs a new Easy object.
      *  
@@ -134,6 +159,11 @@ public:
     static const std::vector<stream_event>
         parse_stream(const std::string &streamdata);
 
+    /*!
+     *  @brief  Gets the links from the last answer
+     */
+    const Link get_link() const;
+
     /*!
      *  @brief  Base class for all entities.
      */
diff --git a/src/mastodon-cpp.hpp b/src/mastodon-cpp.hpp
index 534b317..f4b64ad 100644
--- a/src/mastodon-cpp.hpp
+++ b/src/mastodon-cpp.hpp
@@ -22,6 +22,7 @@
 #include <cstdint>
 #include <map>
 #include <memory>
+#include <array>
 #include <curlpp/cURLpp.hpp>
 #include <curlpp/Easy.hpp>
 
@@ -332,6 +333,15 @@ public:
                                       const string &code,
                                       string &access_token);
 
+    /*!
+     *  @brief  Gets the header from the last answer.
+     *
+     *  @param  header  The header to get
+     *
+     *  @return The header, or "" on error.
+     */
+    const string get_header(const string &header) const;
+
     /*!
      *  @brief  Make a GET request which doesn't require parameters.
      *
@@ -638,15 +648,6 @@ public:
                             const parametermap &parameters,
                             string &answer);
 
-    /*!
-         *  @brief  Gets the header from the last answer.
-         *
-         *  @param  header  The header to get
-         *
-         *  @return The header, or "" on error.
-         */
-        const string get_header(const string &header) const;
-
 private:
     const string _instance;
     string _access_token;