New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/indexer/edit_journal.hpp

@@ -0,0 +1,89 @@
+#pragma once
+
+#include "indexer/feature_decl.hpp"
+#include "indexer/feature_meta.hpp"
+#include "indexer/feature_utils.hpp"
+
+#include <functional>
+#include <string>
+#include <variant>
+#include <vector>
+
+namespace osm
+{
+  enum class JournalEntryType
+  {
+    TagModification,
+    ObjectCreated,
+    LegacyObject,   //object without full journal history, used for transition to new editor
+    //Possible future values: ObjectDeleted, ObjectDisused, ObjectNotDisused, LocationChanged, FeatureTypeChanged
+  };
+
+  struct TagModData
+  {
+    std::string key;
+    std::string old_value;
+    std::string new_value;
+  };
+
+  struct ObjCreateData
+  {
+    uint32_t type;
+    feature::GeomType geomType;
+    m2::PointD mercator;
+  };
+
+  struct LegacyObjData
+  {
+    std::string version;
+  };
+
+  struct JournalEntry
+  {
+    JournalEntryType journalEntryType = JournalEntryType::TagModification;
+    time_t timestamp;
+    std::variant<TagModData, ObjCreateData, LegacyObjData> data;
+  };
+
+  /// Used to determine whether existing OSM object should be updated or new one created
+  enum class EditingLifecycle
+  {
+    CREATED,      //newly created and not synced with OSM
+    MODIFIED,     //modified and not synced with OSM
+    IN_SYNC       //synced with OSM (including never edited)
+  };
+
+  class EditJournal
+  {
+    std::list<JournalEntry> m_journal{};
+    std::list<JournalEntry> m_journalHistory{};
+
+  public:
+    std::list<JournalEntry> const & GetJournal() const;
+
+    osm::EditingLifecycle GetEditingLifecycle() const;
+
+    /// Log object edits in the journal
+    void AddTagChange(std::string key, std::string old_value, std::string new_value);
+
+    /// Log object creation in the journal
+    void MarkAsCreated(uint32_t type, feature::GeomType geomType, m2::PointD mercator);
+
+    void AddJournalEntry(JournalEntry entry);
+
+    /// Clear Journal and move content to journalHistory, used after upload to OSM
+    void Clear();
+
+    std::list<JournalEntry> const & GetJournalHistory() const;
+
+    void AddJournalHistoryEntry(JournalEntry entry);
+
+    std::string JournalToString() const;
+
+    static std::string ToString(osm::JournalEntry const & journalEntry);
+
+    static std::string ToString(osm::JournalEntryType journalEntryType);
+
+    static std::optional<JournalEntryType> TypeFromString(std::string const & entryType);
+  };
+}