Lazy load distribution.current_series

src/distribution.cpp

@@ -24,7 +24,26 @@ distribution::distribution()
       title(""),
       summary(""),
       domain_name(""),
-      lp(nullptr) {}
+      lp(nullptr),
+      current_series([this]() -> std::optional<distro_series> {
+          if (current_series_link.empty()) return std::nullopt;
+          if (_current_series) return _current_series;
+
+          auto response = lp ? lp->api_get(current_series_link) : std::nullopt;
+          if (!response) return std::nullopt;
+
+          auto data = nlohmann::json::parse(response.value());
+          auto ds = distro_series::parse(data.dump());
+
+          if (ds) {
+              ds->set_lp(lp);
+              _current_series = ds;
+              return ds;
+          }
+
+          return std::nullopt;
+      })
+{}
 
 distribution::~distribution() {}
 
@@ -47,6 +66,7 @@ void distribution::parse_json(const std::string& json_data) {
             {"summary", [this](const nlohmann::json& val) { summary = val.get<std::string>(); }},
             {"domain_name", [this](const nlohmann::json& val) { domain_name = val.get<std::string>(); }},
             {"self_link", [this](const nlohmann::json& val) { self_link = val.get<std::string>(); }},
+            {"current_series_link", [this](const nlohmann::json& val) { current_series_link = val.get<std::string>(); }},
             {"web_link", [this](const nlohmann::json& val) { web_link = val.get<std::string>(); }},
             {"translationgroup_link", [this](const nlohmann::json& val) { translationgroup_link = val.get<std::string>(); }}
         };

src/distribution.h

@@ -21,6 +21,7 @@
 #include <nlohmann/json.hpp>
 #include "launchpad.h"
 #include "distro_series.h"
+#include "lazy_optional.h"
 
 #ifndef LAUNCHPAD_API
 #ifdef BUILDING_LAUNCHPAD
@@ -63,13 +64,16 @@ public:
     std::string archive_mirrors_collection_link;
     std::string archives_collection_link;
     std::string main_archive_link;
+    std::string current_series_link;
     std::string series_collection_link;
     std::string valid_specifications_collection_link;
     std::string vulnerabilities_collection_link;
     std::string webhooks_collection_link;
 
+    lazy_optional<distro_series, std::function<std::optional<distro_series>()>> current_series;
 private:
     launchpad* lp;
+    std::optional<distro_series> _current_series = std::nullopt;
 
     // JSON parsing utility
     void parse_json(const std::string& json_data);