variable cfg path

bsp_q7s/acs/StrConfigPathGetter.h

@@ -0,0 +1,23 @@
+#include <optional>
+
+#include "bsp_q7s/fs/SdCardManager.h"
+#include "mission/acs/str/strHelpers.h"
+
+class StrConfigPathGetter : public startracker::SdCardConfigPathGetter {
+ public:
+  StrConfigPathGetter(SdCardManager& sdcMan) : sdcMan(sdcMan) {}
+
+  std::optional<std::string> getCfgPath() override {
+    if (!sdcMan.isSdCardUsable(std::nullopt)) {
+      return std::nullopt;
+    }
+    if (sdcMan.getActiveSdCard() == sd::SdCard::SLOT_1) {
+      return std::string("/mnt/sd1/startracker/flight-config.json");
+    } else {
+      return std::string("/mnt/sd0/startracker/flight-config.json");
+    }
+  }
+
+ private:
+  SdCardManager& sdcMan;
+};