/*
Project: Dentists appointment system
Purpose: Use a random access file to store patients and use a serial access file to store appointments
Author: JT
Ver: 1.0
Date: 02/12/2016

*/

//includes
#include <conio.h>
#include <fstream.h>
#include <iostream.h>
#include <clx.h>
#include <string.h>
#pragma hdrstop

// Customer file definitions
char FileName1[200]="PatientFile";
typedef struct tag_cr{
        char patNo[4];
        char patFName[15];
        char patSName[15];
        char patNum[12];
        char patBday[12];
        char patDateJoin[12];
        char addLine1[30];
        char addLine2[30];
        char city[15];
        char postcode[9];
        char flag[2];
} PATIENT_RECORD;
int patNo;
PATIENT_RECORD a_pat;

//Global Variables for sequentialfileaccess
char appFile[200] = "Appointment File";        // Name of data file
char appPatNo[200][4];                         //
char appNo[200][4];                            //
char appDay[200][12];                          //
char appTime[200][6];                          //
char appDenName[200][25];                      //
char appReason[200][30];                       //
int nai;                                       //
char nac[4];                                   //

//Function Declaration
int mainMenu();                                // User Interface
int newApp();                                  // New appointment
int findApp();                                 // Find appointment
int delApp();                                  // Delete appointment
int reWriteAppFile();                          // Write the appointment file
int readBackAppFile();                         // Read the appointment file
int newPat();                                  // Register a patient
int delPat();                                  // Delete patient record
int updPat();                                  // Update patient record
int createEmptyFileV();                        // Verify if the user wants to create empty file for data
int createEmptyFile();                         // Create empty file for data
//---------------------------------------------------------------------------

#pragma argsused
int main(int argc, char* argv[])
{
        int mainStatus=0;
        while (mainStatus != 8)
        {
                mainStatus=mainMenu();
        }
}

int mainMenu()
{
int choice;
cout<<"\nMain Menu";
cout<<"\n======================================================================= \n";
cout<<"\n1. Register a new patient";
cout<<"\n2. Update a patient's details";
cout<<"\n3. Delete a patient's detials";
cout<<"\n4. Make a new appointment";
cout<<"\n5. Find a patient's appointment(s)";
cout<<"\n6. Cancel/Delete or change an appointment";
cout<<"\n7. Create Patient file (Only on first time running \ndoing it any other time will erase ALL date)";
cout<<"\n8. Exit";
cout<<"\nEnter Choice: \n";
cin>>choice;
switch(choice)
{
        case 1:
        {
        clrscr();
        newPat();
         break;
        }
        case 2:
        {
        clrscr();
        updPat();
         break;
        }
        case 3:
        {
        clrscr();
        delPat();
         break;
        }
        case 4:
        {
         clrscr();
         newApp();
         break;
        }
        case 5:
        {
         clrscr();
         findApp();
         break;
        }
        case 6:
        {
         clrscr();
         delApp();
         break;
        }
        case 7:
        {
        clrscr();
         createEmptyFileV();
         break;
        }
        case 8:
        {
         break;
        }
        default:
        {
         cout<<"\nOptions 1-8 only please";
        }
        }
        return choice;
}

int newApp()
{
int compare;
cout<< "\nAdd a new appointment";
cout << "\nEnter patient number ";
cin>>patNo;
ifstream fin(FileName1, ios::binary);
fin.seekg(patNo * sizeof (a_pat));
fin.read((char*)&a_pat,sizeof(a_pat));
fin.close();
compare = strcmpi(a_pat.flag, "0");
if(compare != 0)
{
        readBackAppFile();
        cin.get();
        cout << "\nEnter the appointment number ";
        cin.getline(appNo[nai], sizeof(appNo));
        cout << "\nEnter the date of the appointment ";
        cin.getline(appDay[nai], sizeof(appDay));
        cout << "\nEnter the time of the appointment ";
        cin.getline(appTime[nai], sizeof(appTime));
        cout << "\nEnter the dentists name ";
        cin.getline(appDenName[nai], sizeof(appDenName));
        cout << "\nAppointment reason ";
        cin.getline(appReason[nai], sizeof(appReason));
        sprintf(appPatNo[nai], "%d", patNo);
        nai=nai+1;
        itoa(nai, nac, 10);
        reWriteAppFile();
}  else  {
 cout << "\nNo patient found";
}
return 0;
}

int findApp()
{
int compare;
string patno;
cout<< "\nFind a patients appointments";
cout << "\nEnter patient number ";
cin >> patno;
readBackAppFile();
cin.get();
for(int i = 0; i < nai;i++)
{
        if(appPatNo[i] == patno)
        {
        cout << "\n" << "Appoint number " << i << "\n" << appDay[i] << "\n" << appTime[i] << "\n" << appDenName[i] << "\n" << appReason[i] << endl;
        }
}
return 0;
}

int delApp()
{
        return 0;
}

int newPat()
{
        int compare;
        cout << "\nAdd a new patient";
        cout << "\nEnter patient number ";
        cin>>patNo;
        ifstream fin(FileName1, ios::binary);
        fin.seekg(patNo * sizeof (a_pat));
        fin.read((char*)&a_pat,sizeof(a_pat));
        fin.close();
        compare = strcmpi(a_pat.flag, "0");
        if (compare == 0)
        {
                ofstream fout(FileName1, ios::in);
                fout.seekp(patNo * sizeof(a_pat));
                cin.get();
                cout << "\nEnter patients first name ";
                cin.getline(a_pat.patFName, sizeof(a_pat.patFName));
                cout << "\nEnter patients surname ";
                cin.getline(a_pat.patSName, sizeof(a_pat.patSName));
                cout << "\nEnter patients phone number ";
                cin.getline(a_pat.patNum, sizeof(a_pat.patNum));
                cout << "\nEnter patients birthday ";
                cin.getline(a_pat.patBday, sizeof(a_pat.patBday));
                cout << "\nEnter todays date ";
                cin.getline(a_pat.patDateJoin, sizeof(a_pat.patDateJoin));
                cout << "\nEnter patients address line 1 ";
                cin.getline(a_pat.addLine1, sizeof(a_pat.addLine1));
                cout << "\nEnter patients address line 2 ";
                cin.getline(a_pat.addLine2, sizeof(a_pat.addLine2));
                cout << "\nEnter patients city ";
                cin.getline(a_pat.city, sizeof(a_pat.city));
                cout << "\nEnter patients postcode ";
                cin.getline(a_pat.postcode, sizeof(a_pat.postcode));
                strcpy(a_pat.flag, "1");
                sprintf(a_pat.patNo, "%d", patNo);
                fout.write((char*) &a_pat, sizeof(a_pat));
                clrscr();
                cout << "Patient added\n";
                fout.close();
        }  else {
                cout << "\nPatient number is taken";
        }
        return 0;
}

int delPat()
{
        int compare;
        cout<<"\nUpdating a patient";
        cout<<"\nEnter patient number";
        cin>>patNo;
        ifstream fin(FileName1, ios::binary);
        fin.seekg(patNo*sizeof(a_pat));
        fin.get((char*)&a_pat,sizeof(a_pat));
        fin.close();
        compare=strcmpi(a_pat.flag,"0");
        if (compare != 0)
        {
                ofstream fout(FileName1, ios::in);
                fout.seekp(patNo * sizeof (a_pat));
                strcpy(a_pat.flag, "0");
                fout.write((char*) &a_pat, sizeof (a_pat));
                fout.close();
                cout << "\nPatient deleted";
                fout.close();
        }
        return 0;
}

int updPat()
{
        int compare;
        cout<<"\nUpdating a patient";
        cout<<"\nEnter patient number";
        cin>>patNo;
        ifstream fin(FileName1, ios::binary);
        fin.seekg(patNo*sizeof(a_pat));
        fin.get((char*)&a_pat,sizeof(a_pat));
        fin.close();
        compare=strcmpi(a_pat.flag,"0");
        if (compare != 0)
        {
                ofstream fout(FileName1, ios::in);
                fout.seekp(patNo * sizeof(a_pat));
                cin.get();
                cout << "\nEnter patients first name ";
                cin.getline(a_pat.patFName, sizeof(a_pat.patFName));
                cout << "\nEnter patients surname ";
                cin.getline(a_pat.patSName, sizeof(a_pat.patSName));
                cout << "\nEnter patients phone number ";
                cin.getline(a_pat.patNum, sizeof(a_pat.patNum));
                cout << "\nEnter patients birthday ";
                cin.getline(a_pat.patBday, sizeof(a_pat.patBday));
                cout << "\nEnter todays date ";
                cin.getline(a_pat.patDateJoin, sizeof(a_pat.patDateJoin));
                cout << "\nEnter patients address line 1 ";
                cin.getline(a_pat.addLine1, sizeof(a_pat.addLine1));
                cout << "\nEnter patients address line 2 ";
                cin.getline(a_pat.addLine2, sizeof(a_pat.addLine2));
                cout << "\nEnter patients city ";
                cin.getline(a_pat.city, sizeof(a_pat.city));
                cout << "\nEnter patients postcode ";
                cin.getline(a_pat.postcode, sizeof(a_pat.postcode));
                strcpy(a_pat.flag, "1");
                fout.write((char*) &a_pat, sizeof(a_pat));
                clrscr();
                cout << "Patient Updated\n";
                fout.close();
        }  else {
                cout << "\nNo patient to update";
        }
       return 0;
}

int createEmptyFileV()
{
        char option;
        cout << "Are you sure you want to create empty file? This will erase ALL data! Y/N" << endl;
        cin >> option;
        if (option == 'Y')
        {
                createEmptyFile();
        }
        else
        {
                mainMenu();
        }
        return 0;
}

int createEmptyFile()
{
        ofstream fout(FileName1,ios::binary);
        strcpy(a_pat.flag,"0");

        for(patNo=0;patNo<200;patNo++)
        {
                fout.write((char*)&a_pat,sizeof(a_pat));
        }//endfor
        fout.close();
        cout << "File created";
        return 0;
}

int reWriteAppFile()
{
int count;
ofstream fout(appFile, ios::binary);
fout.write((char*) &nac, sizeof (nac));
for (count = 0; count < nai; count++)
{
        fout.write((char*) &appNo[count], strlen(appNo[count]));
        fout.write("\n", 1);
        fout.write((char*) &appPatNo[count], strlen(appPatNo[count]));
        fout.write("\n", 1);
        fout.write((char*) &appDay[count], strlen(appDay[count]));
        fout.write("\n", 1);
        fout.write((char*) &appTime[count], strlen(appTime[count]));
        fout.write("\n", 1);
        fout.write((char*) &appDenName[count], strlen(appDenName[count]));
        fout.write("\n", 1);
        fout.write((char*) &appReason[count], strlen(appReason[count]));
        fout.write("\n", 1);

}//endfor
fout.close();
return 0;
}

int readBackAppFile()
{
int count;
ifstream fin(appFile,ios::binary);
fin.read((char*)&nac,sizeof(nac));
sscanf(&nac[0],"%d",&nai);
for( count=0;count<nai;count++)
{
        fin.getline(appNo[count],sizeof(appNo[count]));
        fin.getline(appPatNo[count],sizeof(appPatNo[count]));
        fin.getline(appDay[count],sizeof(appDay[count]));
        fin.getline(appTime[count],sizeof(appTime[count]));
        fin.getline(appDenName[count],sizeof(appDenName[count]));
        fin.getline(appReason[count],sizeof(appReason[count]));
}//endfor
fin.close();
return 0;
}