Add postgresql support

src/database/query.hpp

@@ -11,52 +11,27 @@
 
 #include <sqlite3.h>
 
+void actual_bind(Statement& statement, const std::string& value, int index);
+void actual_bind(Statement& statement, const std::size_t value, int index);
+void actual_bind(Statement& statement, const OptionalBool& value, int index);
+
 struct Query
 {
     std::string body;
     std::vector<std::string> params;
+    int current_param{1};
 
     Query(std::string str):
         body(std::move(str))
     {}
-
-    Statement prepare(sqlite3* db)
-    {
-      sqlite3_stmt* stmt;
-      auto res = sqlite3_prepare(db, this->body.data(), static_cast<int>(this->body.size()) + 1,
-                                 &stmt, nullptr);
-      if (res != SQLITE_OK)
-        {
-          log_error("Error preparing statement: ", sqlite3_errmsg(db));
-          return nullptr;
-        }
-      Statement statement(stmt);
-      int i = 1;
-      for (const std::string& param: this->params)
-        {
-          if (sqlite3_bind_text(statement.get(), i, param.data(), static_cast<int>(param.size()), SQLITE_TRANSIENT) != SQLITE_OK)
-            log_error("Failed to bind ", param, " to param ", i);
-          i++;
-        }
-
-      return statement;
-    }
-
-    void execute(sqlite3* db)
-    {
-      auto statement = this->prepare(db);
-      while (sqlite3_step(statement.get()) != SQLITE_DONE)
-        ;
-    }
 };
 
 template <typename ColumnType>
 void add_param(Query& query, const ColumnType& column)
 {
+  std::cout << "add_param<ColumnType>" << std::endl;
   actual_add_param(query, column.value);
 }
-template <>
-void add_param<Id>(Query& query, const Id& column);
 
 template <typename T>
 void actual_add_param(Query& query, const T& val)
@@ -81,7 +56,7 @@ template <typename Integer>
 typename std::enable_if<std::is_integral<Integer>::value, Query&>::type
 operator<<(Query& query, const Integer& i)
 {
-  query.body += "?";
+  query.body += "$" + std::to_string(query.current_param++);
   actual_add_param(query, i);
   return query;
 }