/*Gnwsta bugs

*/
#include <stdio.h>
#include <stdlib.h>

struct oikonomika{
int im,mi,ye;
float poso;
char onoma[15];
};

int menu();       //Auto to menu einai diamorfwmeno an to arxeio den yparxei
int menu2();      //Diamorfwmeno gia pliri leitourgia
void dimiourgia();
void provoli();
void anazitisi();

struct oikonomika o;
FILE *x;
int flag2=0;
char buffer;
int main(void){
       int y;     //flag tha xrisimipoiithei gia to menu

       x=fopen("oikonomika.dat","rb");  //O logos pou to anoigei einai gia na doume apla an yparxei
       if(!x)
          flag2=1;

       y=1;
       while(y!=0)
       {
                if(flag2==1)
                       y=menu(); //Auto to menu einai diamorfwmeno an to arxeio den yparxei
                else
                       y=menu2();//Diamorfwmeno gia pliri leitourgia


                switch(y){
                  case 1:{
                          dimiourgia();
                          break;
                          }
                  case 2:{
                          provoli();
                          break;
                          }
                  case 3:{
                          anazitisi();
                          break;
                          }
                  case 0:{
                          printf("\nTelos programmatos\n");
                          break;
                          }
                  default:{
                          printf("\nLathos epilogi\n");
                          break;
                          }
                  }
         }
return 0;
}

int menu()
{
       int z;
       do{
           printf("\n1) Dimiourgeia neas kataxwrisei");
           printf("\n0) Exodos");
           printf("\n\nTi theleis na kaneis? ");
           scanf("%d",&z);
           scanf("%c",&buffer);
       }while(z<0 || z>1);
       return z;
}

int menu2()
{
        int z;
        do{
            printf("\n1) Dimiourgeia neas kataxwrisei");
            printf("\n2) Provoli kataxwrisewn arxeiou");
            printf("\n3) Anazitisi");
            printf("\n0) Exodos");
            printf("\n\nTi theleis na kaneis? ");
            scanf("%d",&z);
            scanf("%c",&buffer);
        }while(z<0 || z>3);
        return z;
}

void dimiourgia()
{
     int telos;
     int flag;
     x=fopen("oikonomika.dat","ab");
     if(!x)
     {
         x=fopen("oikonomika.dat","wb");
          flag=1;
     }

     do{
       printf("\n Gia poia imerominia thes na kataxwriseis ta eksoda sou? ");
       //printf("\n Dwse mera: ");
       do{
         printf("\n Dwse mera: ");
         scanf("%d",&o.im);
         scanf("%c",&buffer);
       }while(o.im<1 || o.im>31);


       do{
         printf("\n Dwse mina: ");
         scanf("%d",&o.mi);
         scanf("%c",&buffer);
       }while(o.mi<1 || o.mi>12);

       do{
       printf("\nDwse year: ");
       scanf("%d",&o.ye);
       scanf("%c",&buffer);
       }while(o.ye<2000 || o.ye>2100);

       printf("\n Ti agorases? ");
       scanf("%s",o.onoma);
       printf("\n Posa lefta ksodepses? ");
       scanf("%f",&o.poso);

       fwrite(&o,sizeof(struct oikonomika),1,x);
       o.im=NULL;
       o.mi=NULL;
       o.ye=NULL;
       printf("Thes na kaneis k alli eisagwgi?\n 1.NAI\n0.OXI\n");
       do{
         scanf("%d",&telos);
         scanf("%c",&buffer);
       }while(telos<0 || telos>1);
     }while(telos==1);
     flag2=0;
     fclose(x);
}

void provoli()
{
    int v=0;
    x=fopen("oikonomika.dat","rb");
    printf("\na/a  Hmerominia     Antikeimeno         Poso\n");
    do{
      fread(&o,sizeof(struct oikonomika),1,x);
      v++;
      if(!feof(x))
            printf("%d)    %d:%d:%d      %-10s         %.2f\n",v,o.im,o.mi,o.ye,o.onoma,o.poso);
    }while(!feof(x));
    fclose(x);
}

void anazitisi()
{
    int i,m,y,c=1; //i c gia ton a/a
    int epit=1;

    x=fopen("oikonomika.dat","rb");

    printf("\nMe vasi poia imerominia thes na anazitiseis? Dwse imera,mina kai xronia: ");
    scanf("%d%d%d",&i,&m,&y);
    printf("\na/a  Hmerominia     Antikeimeno         Poso\n");
    do{
      fread(&o,sizeof(struct oikonomika),1,x);
      if(feof(x))
             break;
      if(o.im==i && o.mi==m && o.ye==y)
      {
           printf(" %d   %d:%d:%d      %-10s         %.2f\n",c,o.im,o.mi,o.ye,o.onoma,o.poso);
           epit=0;
           c++;
      }
    }while(!feof(x));

    if(epit==1)
          printf("De vrethike kapoio apotelesma\n");
    fclose(x);
}