// lpatrlst.cpp
// ----------------------------------------------------------------------
// incomplete; see comments marked that w/ *** 
// definition for class LibraryPatronList
// modified copy of ListA.h/cpp, Carrano et al.
//
// CSE 143
// Homework 3
// http://www.cs.washington.edu/education/courses/143/00su/homework/
// 02 Jul 2000; Ken Yasuhara


#include <assert.h>
#include <iostream.h>
#include <fstream.h>
#include <string.h>

#include "library.h"
#include "lpatrlst.h"


const int MAX_LINE_LENGTH = 120; // when reading from a file


//////////////////////////////////////////////////////////////////////
// constructors

LibraryPatronList::LibraryPatronList() 
{
  // *** your code here 
}

LibraryPatronList::LibraryPatronList(char dataFileName[])
{
  // *** your code here 

  // *** You should call private helper method readFile here.
}


//////////////////////////////////////////////////////////////////////
// methods

// *** your code here


//////////////////////////////////////////////////////////////////////
// I/O methods

void LibraryPatronList::readFile(char fileName[])
{
  // Mac and UNIX users:  omit ios::nocreate argument
  assert(strlen(fileName) > 0);
  ifstream inFile(fileName, ios::nocreate);
  if (!inFile) {
    cerr << endl << "unable to open file: " << fileName << endl;
    return;
  }

  int patronCount = 0; // counts number of patron records read so far
  while (inFile && (patronCount < MAX_PATRON_COUNT)) {
    int ID;
    inFile >> ID;

    // need to skip the trailing whitespace after ID,
    // i.e. trailing characters, including endline (\n)
    char line[MAX_LINE_LENGTH];
    inFile.getline(line, MAX_LINE_LENGTH);

    char name[MAX_NAME_LENGTH];
    inFile.getline(name, MAX_TITLE_LENGTH);
    if (strlen(name) == 0) { // stop at first blank line
      break;
    }

    // done reading data for this patron; insert in list
    LibraryPatron newPatron(ID, name);
    bool success;
    insertItem(newPatron, success);
    if (!success) {
      cerr << "LibraryPatronList::readFile():  ListInsert failed" << endl;
      return;
    }

    patronCount++;
  }

  inFile.close();
} // end readFile