implement remaining logic

Signed-off-by: Folling <mail@folling.io>

src/persistence/migrations.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <array>
+
+#include <cppbase/assets.hpp>
+#include <cppbase/result.hpp>
+
+#include <sqlitecpp/connection.hpp>
+
+namespace ikarus {
+CPPBASE_ASSET(m1_initial_layout, "persistence/migrations/m1_initial_layout.sql");
+
+class Migration : public sqlitecpp::Migration {
+public:
+    Migration(char const * sql, size_t size):
+        sql{sql, size} {}
+
+    ~Migration() override = default;
+
+public:
+    [[nodiscard]] inline auto get_content() const -> std::string_view override {
+        return sql;
+    }
+
+public:
+    std::string_view sql;
+};
+
+#define DECLARE_MIGRATION(name) std::make_unique<ikarus::Migration>(static_cast<char const *>(name()), name##_size())
+
+constexpr std::string_view DB_VERSION_KEY = "IKARUS_DB_VERSION";
+std::vector<std::unique_ptr<sqlitecpp::Migration>> const MIGRATIONS = []() {
+    std::vector<std::unique_ptr<sqlitecpp::Migration>> ret;
+
+    ret.emplace_back(DECLARE_MIGRATION(m1_initial_layout));
+
+    return ret;
+}();
+
+}  // namespace ikarus