docs: further setting up structure

backend/include/bs-utility.h

@@ -5,6 +5,7 @@
 #include <exception>
 #include <mutex>
 #include <sstream>
+#include <stack>
 #include <stdexcept>
 #include <string>
 #include <thread>
@@ -42,7 +43,10 @@ template <typename T>
 BlockingStringStream &BlockingStringStream::operator<<(const T &val) {
   {
     std::lock_guard<std::mutex> lock(mutex);
-    if (internalStream.peek() == EOF) internalStream.clear();
+    if (internalStream.peek() == EOF) {
+      internalStream.clear();
+      internalStream.str("");
+    }
     internalStream << val;
   }
   condition.notify_one();
@@ -61,4 +65,10 @@ BlockingStringStream &BlockingStringStream::operator>>(T &val) {
 
   return *this;
 }
+
+class SessionClass {
+  std::stack<int> login_stack;
+  std::string SessionToken;
+  std::string OuthorizationKey;
+};
 #endif  // PROTECTOR_UTILITY_H

backend/include/engine.h

@@ -1,4 +1,11 @@
 #ifndef PROTECTOR_ENGINE_H
 #define PROTECTOR_ENGINE_H
+#include <string>
+class BookStoreEngineClass {
+  std::string config_dir;
 
-#endif // PROTECTOR_ENGINE_H
+ public:
+  BookStoreEngineClass() = delete;
+  BookStoreEngineClass(std::string config_dir) : config_dir(config_dir) {}
+};
+#endif  // PROTECTOR_ENGINE_H

backend/include/schedule.h

@@ -1,4 +1,23 @@
 #ifndef PROTECTOR_SCHEDULE_H
 #define PROTECTOR_SCHEDULE_H
+#include <string>
 
-#endif // PROTECTOR_SCHEDULE_H
+#include "bs-utility.h"
+#include "engine.h"
+class BookStoreBackEndClass {
+  std::string config_dir;
+  BlockingStringStream *input_ptr;
+  BlockingStringStream *output_ptr;
+  BookStoreEngineClass *engine_ptr;
+
+ public:
+  BookStoreBackEndClass() = delete;
+  BookStoreBackEndClass(std::string config_dir, BlockingStringStream *input_ptr,
+                        BlockingStringStream *output_ptr)
+      : config_dir(config_dir), input_ptr(input_ptr), output_ptr(output_ptr) {
+    engine_ptr = new BookStoreEngineClass(config_dir);
+  }
+  ~BookStoreBackEndClass() { delete engine_ptr; }
+  void Run();
+};
+#endif  // PROTECTOR_SCHEDULE_H