#include "MsgFolder.h"
#include "Message.h"
#include <assert.h>
#include <iostream.h>

//*****************************************************************************
// Worker Functions:
// So why not put these as member functions of CMsgFolder class?
// because I prefer to avoid doing screen oriented I/O in a class
// What if this is a Gui application? The class should not have to know about
// the User Interface.
//*****************************************************************************

//********
//	listMessages: list messages currently available
// OUTPUT FORMAT:
//	#:  Topic
//		where # is an arbitrary messages number which = index in message array

void listMsgs(const CMsgFolder& msgFolder)
{
	char topic[SIZE_TOPIC+1];
	for(int i = 1; i <= msgFolder.NumMsgs(); i++) {
		if(!msgFolder.GetMsgTopic(i, topic)) {
			cout << "Could not access topic - aborting \n ";
			ExitProcess(1);
		}
		cout << i << ": " << topic << endl;
	}
}

//********
//	addMessage: adds a message to folder
//	topic must fit on one line
//	text is multi-line terminating in an empty line

void addMsg(CMsgFolder& msgFolder)
{
	int i;
	char topic[SIZE_TOPIC+1];
	char text[SIZE_TEXT+1];
	CMessage thisMsg;

	cout << "topic(up to " << SIZE_TOPIC << " characters)\n";
	cin.getline(topic,SIZE_TOPIC);
	thisMsg.SetTopic(topic);

	cout << "text (up to " << SIZE_TEXT << " characters), end text with empty line\n";

	bool newLine = true;	// used for detecting empty lines
	for(i = 0; i < SIZE_TEXT; i++) {
		if((text[i] = cin.get()) == '\n') {
			if(newLine)
				break;
			newLine = true;
		}
		else
			newLine = false;
	}
	text[i] = '\0';	// terminate string
	thisMsg.SetText(text);
	if(!msgFolder.PostMsg(thisMsg)) {
		cerr << "Error in adding message - perhaps you need to open a folder first!\n";
	}

}



//********
//	showMessage: Shows message
void showMsg(int msgNum, const CMsgFolder& msgFolder)
{
	CMessage thisMsg;
	char topic[SIZE_TOPIC+1];
	char text[SIZE_TEXT+1];

	if(!msgFolder.GetMsg(msgNum, thisMsg)) {
		cout << " could not find message\n";
		return;
	}
	thisMsg.GetTopic(topic);
	thisMsg.GetText(text);
	cout << "Topic: " << topic << endl;
	cout << "Text: " << text << endl;
}