#include "main.h"
#include "CMsgDlg.h"
#include <iostream.h>
#include "Message.h"


extern CMsgApp msgApp;  
// Message map - maps message IDs to their handlers
BEGIN_MESSAGE_MAP( CMsgDlg, CDialog )
	ON_COMMAND(IDC_SAVE, OnSave)
	ON_COMMAND(IDC_CLEAR, OnClear)
	ON_COMMAND(IDC_LOAD, OnLoad)
END_MESSAGE_MAP()


BOOL CMsgDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	return TRUE;
}

// Handle the save button 
void CMsgDlg::OnSave()
// Saves the message
{
	CString topic;
	CString text;
	CString fileName;
	HANDLE msgFile;

	GetDlgItemText(IDC_TOPIC, topic);
	msgApp.msg.SetTopic(topic);
	GetDlgItemText(IDC_TEXT, text);
	msgApp.msg.SetText(text);
	GetDlgItemText(IDC_MSG_ID, fileName);
	
	msgFile = CreateFile(fileName,GENERIC_WRITE,0,0,CREATE_ALWAYS,0,0);
	if(msgFile == INVALID_HANDLE_VALUE) {
		cerr << "Error: " << GetLastError() <<
			" when creating file:" << fileName << endl;
		ExitProcess(1);
	}
	if(!msgApp.msg.WriteMsg(msgFile)) {
		cerr << " Error writing message msg1\n";
		ExitProcess(1);
	}
	CloseHandle(msgFile);


}

void CMsgDlg::OnLoad()
// Saves the message
{
	char topic[SIZE_TOPIC];
	char text[SIZE_TEXT];
	HANDLE msgFile;

	CString fileName;
	GetDlgItemText(IDC_MSG_ID, fileName);
	msgFile = CreateFile(fileName,GENERIC_READ,0,0,OPEN_EXISTING,0,0);
	if(msgFile == INVALID_HANDLE_VALUE) {
		cerr << "Error: " << GetLastError() <<
			" when opening file: " << fileName << endl;
		ExitProcess(1);
	}
	msgApp.msg.ReadMsg(msgFile);
	CloseHandle(msgFile);
	
	msgApp.msg.GetTopic(topic);
	msgApp.msg.GetText(text);

	SetDlgItemText(IDC_TOPIC, topic);
	SetDlgItemText(IDC_TEXT, text);
	
}
// Handle changes to any edit area
void CMsgDlg::OnClear()
// Handles Clearing of edit areas
{
	SetDlgItemText(IDC_TOPIC,"");
	SetDlgItemText(IDC_TEXT,"");
}