1 files changed, 75 insertions, 0 deletions
diff --git a/Snapshot.cpp b/Snapshot.cpp
new file mode 100644
index 0000000..57f81db
--- /dev/null
+++ b/Snapshot.cpp
@@ -0,0 +1,75 @@
+#include "DumpSource.h"
+
+#include <ctime>
+#include <sstream>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+#include <raylib.h>
+
+#include "Killmail.h"
+
+
+using json = nlohmann::json;
+using tm = std::tm;
+
+
+void from_json(const json& j, tm& d);
+void from_json(const json& j, Killmail& km);
+
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(LongVector3, x, y, z)
+
+
+DumpSource::DumpSource(const char* filename) :
+    m_killmails {}
+{
+    if (!FileExists(filename))
+        throw "File does not exist";
+    char* text = LoadFileText(filename);
+    auto dump = json::parse(text);
+    std::unordered_map<long int, long int> group_lookup;
+    for (const auto& item : dump["types"]) {
+        const auto type_id = item["type_id"].get<long int>();
+        item["group_id"].get_to(group_lookup[type_id]);
+    }
+    dump.at("killmails").get_to(m_killmails);
+    for (auto& km : m_killmails)
+        km.group = group_lookup[km.ship];
+    UnloadFileText(text);
+}
+
+
+std::vector<Killmail>
+DumpSource::killmails() const
+{
+    return m_killmails;
+}
+
+
+void
+from_json(const json& j, tm& d)
+{
+    std::istringstream str(j.get<std::string>());
+    str >> std::get_time(&d, "%Y-%m-%dT%H:%M:%SZ");
+}
+
+
+void
+from_json(const json& j, Killmail& km)
+{
+    j.at("solar_system_id").get_to(km.location);
+    j.at("victim").at("ship_type_id").get_to(km.ship);
+    j.at("victim").at("position").get_to(km.position);
+    if (j.at("victim").contains("character_id"))
+	    j.at("victim").at("character_id").get_to(km.owner.character);
+    j.at("victim").at("corporation_id").get_to(km.owner.corporation);
+    if (j.at("victim").contains("alliance_id"))
+	    j.at("victim").at("alliance_id").get_to(km.owner.alliance);
+    if (j.at("victim").contains("faction_id"))
+	    j.at("victim").at("faction_id").get_to(km.owner.faction);
+    auto calendar = j.at("killmail_time").get<tm>();
+    km.time = std::mktime(&calendar);
+}