From f0bbc1d09026ed9532113cc909da5e9183e0a0e1 Mon Sep 17 00:00:00 2001
From: Robin Mueller <robin.mueller.m@gmail.com>
Date: Wed, 2 Aug 2023 09:39:42 +0200
Subject: [PATCH] added filesystem down event

---
 mission/payload/ScexDeviceHandler.cpp | 23 +++++++++++++++++++----
 mission/payload/ScexDeviceHandler.h   |  2 ++
 mission/payload/scexHelpers.h         |  1 +
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/mission/payload/ScexDeviceHandler.cpp b/mission/payload/ScexDeviceHandler.cpp
index 40cbfbab..6281142d 100644
--- a/mission/payload/ScexDeviceHandler.cpp
+++ b/mission/payload/ScexDeviceHandler.cpp
@@ -19,7 +19,9 @@ using namespace returnvalue;
 
 ScexDeviceHandler::ScexDeviceHandler(object_id_t objectId, ScexUartReader& reader, CookieIF* cookie,
                                      SdCardMountedIF& sdcMan)
-    : DeviceHandlerBase(objectId, reader.getObjectId(), cookie), sdcMan(sdcMan), reader(reader) {}
+    : DeviceHandlerBase(objectId, reader.getObjectId(), cookie), sdcMan(sdcMan), reader(reader) {
+  fsUnusableEventCd.timeOut();
+}
 
 ScexDeviceHandler::~ScexDeviceHandler() {}
 
@@ -218,8 +220,12 @@ ReturnValue_t ScexDeviceHandler::interpretDeviceReply(DeviceCommandId_t id, cons
       }
       fileNameSet = true;
     } else {
-      ofstream out(fileName,
-                   ofstream::binary | ofstream::app);  // append
+      if (!sdcMan.isSdCardUsable(std::nullopt)) {
+        fsUnsableEvent();
+        return returnvalue::FAILED;
+      }
+      // Append to existing file.
+      ofstream out(fileName, ofstream::binary | ofstream::app);
       if (out.bad()) {
         sif::error << "ScexDeviceHandler::handleValidReply: Could not open file " << fileName
                    << std::endl;
@@ -330,6 +336,14 @@ void ScexDeviceHandler::filesystemChecks() {
   }
 }
 
+void ScexDeviceHandler::fsUnsableEvent() {
+  if (fsUnusableEventCd.isBusy()) {
+    return;
+  }
+  triggerEvent(scex::FS_UNUSABLE);
+  fsUnusableEventCd.resetTimer();
+}
+
 ReturnValue_t ScexDeviceHandler::generateNewScexFile(const char* cmdName) {
   char timeString[64]{};
   auto activeSd = sdcMan.getActiveSdCard();
@@ -339,7 +353,8 @@ ReturnValue_t ScexDeviceHandler::generateNewScexFile(const char* cmdName) {
 
   std::ostringstream oss;
   auto prefix = sdcMan.getCurrentMountPrefix();
-  if (prefix == nullptr) {
+  if (prefix == nullptr or !sdcMan.isSdCardUsable(std::nullopt)) {
+    fsUnsableEvent();
     return returnvalue::FAILED;
   }
   timeval tv;
diff --git a/mission/payload/ScexDeviceHandler.h b/mission/payload/ScexDeviceHandler.h
index 6e1924e3..ed30668f 100644
--- a/mission/payload/ScexDeviceHandler.h
+++ b/mission/payload/ScexDeviceHandler.h
@@ -42,6 +42,7 @@ class ScexDeviceHandler : public DeviceHandlerBase {
   scex::Cmds currCmd = scex::Cmds::PING;
   SdCardMountedIF &sdcMan;
   Countdown finishCountdown = Countdown(LONG_CD);
+  Countdown fsUnusableEventCd = Countdown(60000);
 
   // DeviceHandlerBase private function implementation
   void doStartUp() override;
@@ -49,6 +50,7 @@ class ScexDeviceHandler : public DeviceHandlerBase {
   ScexHelper helper;
   ScexUartReader &reader;
 
+  void fsUnsableEvent();
   void performOperationHook() override;
   ReturnValue_t buildNormalDeviceCommand(DeviceCommandId_t *id) override;
   ReturnValue_t buildTransitionDeviceCommand(DeviceCommandId_t *id) override;
diff --git a/mission/payload/scexHelpers.h b/mission/payload/scexHelpers.h
index aa0f320b..9b9e8f14 100644
--- a/mission/payload/scexHelpers.h
+++ b/mission/payload/scexHelpers.h
@@ -17,6 +17,7 @@ static constexpr uint8_t SUBSYSTEM_ID = SUBSYSTEM_ID::SCEX_HANDLER;
 
 static constexpr Event MISSING_PACKET = event::makeEvent(SUBSYSTEM_ID, 0, severity::LOW);
 static constexpr Event EXPERIMENT_TIMEDOUT = event::makeEvent(SUBSYSTEM_ID, 1, severity::LOW);
+static constexpr Event FS_UNUSABLE = event::makeEvent(SUBSYSTEM_ID, 2, severity::LOW);
 //! FRAM, One Cell or All cells command finished. P1: Command ID
 static constexpr Event MULTI_PACKET_COMMAND_DONE =
     event::makeEvent(SUBSYSTEM_ID, 2, severity::INFO);