/*

TerminalManager source file. We will be using this class

as an example for Object Oriented Programming in C.

*/

 

#include <stdio.h>

#include "TerminalManager.h"

#include "Msg.h"

#include <stdlib.h>

 

Terminal *TerminalManager_FindTerminal(TerminalManager *pMgr, int terminalId)

{

   if (terminalId < MAX_TERMINALS)

   {

       return (&(pMgr->terminals[terminalId]));

   }

   else

   {

       return NULL;

   }

}

 

void TerminalManager_Construct(TerminalManager *pMgr)

{

   int i;

   /*

   C will not call construction functions, so loop through all call the

   construction functions for all terminals.

   */

   for (i=0; i < MAX_TERMINALS; i++)

   {

      Terminal_Construct(&(pMgr->terminals[i]));

   }

}

 

void TerminalManager_Destroy(TerminalManager *pMgr)

{

   int i;

   /*

   C will not call destruction functions, so loop through all call the

   destruction functions for all terminals.

   */

  for (i=0; i < MAX_TERMINALS; i++)

   {

      Terminal_Destroy(&(pMgr->terminals[i]));

   }

}

 

void TerminalManager_HandleMessage(TerminalManager *pMgr, Msg* pMsg)

{

    int status, status1;

 

    int terminalId = pMsg->terminalId;

 

    Terminal *pTerm = TerminalManager_FindTerminal(pMgr, terminalId);

    Terminal *pOtherTerm = NULL;

 

    /*

    Switch on the message type and invoke the Terminal's message handlers for

    the terminal specified in the message. Here the terminal manager takes

    care of indexing into the terminal structure and it passes the pointer

    to the terminal handler functions. Due to this design, implementation

    of the terminal handler functions just focus on handling the specified

    terminal.

    */

    if (pTerm != NULL)

    {

        switch (pMsg->msgType)

        {

        case CREATE_TERMINAL:

            Terminal_Activate(pTerm, (const TerminalCreateMsg *)pMsg);

            break;

        case DELETE_TERMINAL:

            Terminal_Deactivate(pTerm, (const TerminalDeleteMsg *) pMsg);

            break;

        case RUN_DIAGNOSTICS:

            status = Terminal_HandleRunDiagnostics(pTerm, (const RunDiagnosticsMsg *) pMsg);

            break;

        case PERFORM_SWITCHOVER:

            pOtherTerm = TerminalManager_FindTerminal(pMgr, pMsg->otherTerminalId);

            status = Terminal_HandleOutOfService(pTerm);

            status1 = Terminal_HandleInService(pOtherTerm);

            break;

        }

    }

    free(pMsg);

}