//CatalogBrowser.cxx
//Brooke Loftus

#include "Catalog.h"
#include<iostream.h>
#include<fstream.h>
#include<string>

void showMenu();
Catalog searchString(Catalog &catalog);
Catalog readFile();
void showResults(Catalog &search);
void showCatalog(Catalog &catalog);
void browseCurrent(Catalog $search, Catalog &catalog);


int main()
{
	char ans;
	bool quit=false;
	Catalog currentSearch, lastStep, catalog;

	while (!quit){
		showMenu();
		cerr << " What would you like to do?   " ;
		cin >> ans;
		switch(ans)
		{
			case 'N':
			case 'n':	lastStep = currentSearch;
						currentSearch.makeEmpty();
						currentSearch = searchString(catalog);
						break;
			case 'S':
			case 's':	lastStep = currentSearch;
						currentSearch = searchString(catalog);
						break;
			case 'F':
			case 'f':	catalog = readFile();
						break;
			case 'U':
			case 'u':	currentSearch = lastStep;
						break;
			case 'R':
			case 'r':	showResults(currentSearch);
						break;
			case 'C':
			case 'c':	showCatalog(catalog);
						break;
			case 'B':
			case 'b': 	browseCurrent(currentSearch, catalog);
						break;
			case 'Q':
			case 'q':	quit=true;
						break;
			default:	break;
		};//switch
	}

	return 0;

}//main

void showMenu()
{
	cerr << "   case 'n': start a new search						" << endl;
	cerr << "   case 's': search for a string in author or title	" << endl;
	cerr << "   case 'f': read a catalog from a file				" << endl;
	cerr << "   case 'u': undo last change to results				" << endl;
	cerr << "   case 'r': show results								" << endl;
	cerr << "   case 'c': show catalog								" << endl;
    cerr << "   case 'b': 'browse', e.g., if the user types			 " << endl;
	cerr << " 					   b 7				 				 " << endl;
	cerr << "			  then a list gets displayed of the			" << endl;
	cerr << "			  7th book in the current list of			" << endl;
	cerr << "  			  search results plus the five books		" << endl;
	cerr << " 			  that sit on either side of it on			" << endl;
	cerr << " 			  the library shelf							" << endl;
	cerr << "   case 'q': quit										" << endl;
}//showMenu

Catalog searchString(Catalog &catalog)
{
	//get string, give to catalog to search, return catalog of length 11
	//5 before, 1 current, 5 after
	//make retrieve entry at place 6
	//that will be the found items ... see if can do for multiple finds

	string answer;
	Catalog searchResults;
	char ans;

	cerr << "Search for (t)itle or (a)uthor? ";
	cin >> ans;

	switch(ans){
		case 't':
		case 'T':	cerr << "Input? ";
					cin >> answer;
					searchResults = catalog.searchTitle(answer);
					break;
		case 'a':
		case 'A':	cerr << "Input? ";
					cin >> answer;
					searchResults = catalog.searchAuthor(answer);
					break;
		case 'Q':
		case 'q':	break;
	        default :   cerr << "Proper input not received! Try again." << endl;
					break;
	}//switch

	return searchResults;

}//searchString

Catalog readFile()
{
   // getting the file name from the user
   Catalog catalog;
   string infileName;
   ifstream infile;
                cerr << system ("dir") << endl << "File: ";
                cin >> infileName;

                // trying to open the file (note the conversion to
                // a "C string" ... the "open" function wants that)
                infile.open (infileName.c_str ()) ;

                // if successful ...
                if (infile) {

                   catalog.makeEmpty ();

                   // finally, read the file
                   infile >> catalog;
                   catalog.setTitle (infileName);

                   // announcing success
                   cerr << infileName << " read" << endl;

                   // cleaning up ...
                   infile.close ();

                   catalog.showTitleAndSize ();
                }
                else {

                   // failed to open (probably wrong name, or file already open)
                   cerr << "Failed to open " << infileName << "." << endl;
                   system ("dir | more");
                }
               
                return catalog;
}//readFile

void showResults(Catalog &search)
{
	cout << search;
}//showResults

void showCatalog(Catalog &catalog)
{
	cout << catalog;
}//showCatalog

void browseCurrent(Catalog &search, Catalog &catalog)
{
	int number;
	char letter;
	bool quit=false;
	do{
		cerr << "Input? " ;
		cin >> letter >> number;
		switch(letter)
		{
			case 'Q':
			case 'q':	quit=true;
						break;
			default : 	cerr << "Error in input" << endl;
						break;
			case 'b':
			case 'B':	cout << catalog.returnEleven(spot, search);
						break;
		}//switch
	}while(!quit);

}//browseCurrent