store id in DB

shared/inc/sql.hpp

@@ -33,7 +33,7 @@ constexpr char DB_NAME[] = "data.db";
 struct sqlite3;
 struct sqlite3_stmt;
 
-#define SQLITE_ROW 100  /* sqlite3_step() has another row ready */
+#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */
 #define SQL_DONE 101
 #define SQL_NULL 5
 #define SQLITE_OK 0
@@ -44,6 +44,7 @@ namespace sql
   void init();
   void shutdown();
   int open(const char *filename, sqlite3 **ppDb);
+  int exec(sqlite3 *db, const char *sql, int (*callback)(void *, int, char **, char **), void *first_arg, char **errmsg);
   int prepare_v2(sqlite3 *db, const char *zSql, int nByte, sqlite3_stmt **pStmt, const char **pzTail);
   int bind_int64(sqlite3_stmt *pStmt, int column, int64_t value);
   int step(sqlite3_stmt *pStmt);

shared/inc/values/DnaDB.hpp

@@ -0,0 +1,20 @@
+#include <cinttypes>
+#include <vector>
+
+struct sqlite3;
+
+class DnaDB
+{
+  sqlite3 *db;
+
+public:
+  void init(const char *db_name = "data.db");
+  void deinit();
+  std::vector<int64_t> getUserIds();
+  int insertUser(int64_t id, int64_t max_gen);
+  int updateUser(int64_t id, int64_t max_gen);
+
+  void getGenerations();
+  void getLikesForGeneration();
+  void getVectorForGeneration();
+};

shared/inc/values/DnaManager.hpp

@@ -7,9 +7,9 @@
 
 enum Liked
 {
-  tbd,
-  yes,
-  no
+  tbd = 0,
+  yes = 1,
+  no = 2,
 };
 
 struct UiUnit