import os
import csv
def newpatient():
    print("Add a New Patient Record")
    print("========================")
    f=open('hospital.csv','a',newline='\r\n')
    s=csv.writer(f)
    PatientId=int(input('Enter Patient Id='))
    PatientName=input('Enter Patient Name=')
    Disease=input('Enter Disease=')
    Fee=float(input('Enter Fee='))
    rec=[PatientId,PatientName,Disease,Fee]
    s.writerow(rec)
    f.close()
    print("Record Saved...")
    input("Press any key to continue..")

def updatepatient():
    print("Modify a Patient Record")
    print("=======================")
    f=open('hospital.csv','r',newline='\r\n') 
    f1=open('temp.csv','w',newline='\r\n')
    f1=open('temp.csv','a',newline='\r\n')
    r=input('Enter Patient Id of patient you want to modify=')
    s=csv.reader(f)
    s1=csv.writer(f1)
   
    for rec in s:
        if rec[0]==r:
            print("PatientId=",rec[0])
            print("PatientName=",rec[1])
            print("Disease=",rec[2])
            print("Fee=",rec[3])
            choice=input("Do you want to modify..?(y/n)=")
            if choice=='y' or choice=='Y':
                PatientId=int(input('Enter New PatientId='))
                PatientName=input('Enter new Patient Name=')
                Disease=input('Enter Disease=')
                Fee=float(input('Enter Fee='))
                rec=[PatientId,PatientName,Disease,Fee]
                s1.writerow(rec)
                print("Record Modified...")
            else:
                s1.writerow(rec)
        else:
            s1.writerow(rec)
            
    
        
    f.close()   
    f1.close()
    os.remove("hospital.csv")
    os.rename("temp.csv","hospital.csv")
    
    input("Press any key to continue...")

def deletepatient():
    f=open('hospital.csv','r',newline='\r\n') 
    f1=open('temp.csv','w',newline='\r\n')
    f1=open('temp.csv','a',newline='\r\n')
    r=input('Enter PatientId of patient you want to delete=')
    s=csv.reader(f)
    s1=csv.writer(f1)
   
    for rec in s:
        if rec[0]==r:
            print("PatientId=",rec[0])
            print("Patient Name=",rec[1])
            print("Disease=",rec[2])
            print("Fee=",rec[3])
            choice=input("Do you want to delete this record(y/n)=")
            if choice=='y' or choice=='Y':
                pass
                print("Record Deleted...")
            else:
                s1.writerow(rec)
        else:
            s1.writerow(rec)
           
    f.close()
    f1.close()
    os.remove("hospital.csv")
    os.rename("temp.csv","hospital.csv")
    
    input("Press any key to continue...")

def searchpatient():
    print("Search a Record")
    print("===================")
    f=open('hospital.csv','r',newline='\r\n')  #Remove new line character from output
    r=input('Enter PatientId you want to search=')
    s=csv.reader(f)
   
    for rec in s:
        if rec[0]==r:
            print("PatientId=",rec[0])
            print("Patient Name=",rec[1])
            print("Disease=",rec[2])
            print("Fee=",rec[3])
        
    f.close()
    input("Press any key to continue..")
def listpatients():
    print("List of All Patients")
    print("===================")
    f=open('hospital.csv','r',newline='\r\n')  #Remove new line character from output
    s=csv.reader(f)
    for rec in s:
        print(rec[0],end="\t\t")
        print(rec[1],end="\t\t")
        print(rec[2],end="\t\t")
        print(rec[3])
        
    
    f.close()
    input("Press any key to continue...")

def menu():
    choice=0
    while choice!=6:
        print("\n")
        print("====================================")
        print("Softare for Hospital Data Management")
        print("====================================")
        print("\n==========")
        print("Main Menu")
        print("==========")
        print("1. Add a new Patient Record")
        print("2. Modify Existing Patient Record")
        print("3. Delete Existing Patient Record")
        print("4. Search a Patient Record")
        print("5. List of all Patients")
        print("6. Quit")
        choice=int(input('Enter your choice'))
        if choice==1:
            newpatient()
        elif choice==2:
            updatepatient()
        elif choice==3:
            deletepatient()
        elif choice==4:
            searchpatient()
        elif choice==5:
            listpatients()
        elif choice==6:
            print("Good Bye")
            break
menu()