másikzsolt

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h> //perror, errno

void list_bikes(int station_id){
        printf("ID\tS_ID\tSTATUS\n");
        FILE *f;
        f = fopen("OP_BIKE", "r");
    if (f==NULL){perror("File opening error\n"); exit(1);}
    char line[160];
    int bike_id;
    int bike_station_id;
    char status[50];
    while (!feof(f))
        {
                fgets(line,sizeof(line),f);
        sscanf(line,"%d %d %s",&bike_id,&bike_station_id,status);
                        if(station_id == 0 || station_id == bike_station_id)
                        {
                                printf("%s",line);
            }
        }
        printf("\n");
        fclose(f);
}

void list_rents(char* username){
        printf("ID\tNAME\tACTION\t\tTIME\n");
        FILE *f;
        f = fopen("OP_BIKE.RENT", "r");
    if (f==NULL){perror("File opening error\n"); exit(1);}
        int bike_id;
        char user_name[50];
        char user_action[50];
        char action_time[5];
        char all[] = "all_";
       char line[160];
       while (!feof(f))
        {
                fgets(line,sizeof(line),f);
                sscanf(line,"%d %s %s %s",&bike_id,user_name,user_action,action_time);
                if(strcmp(user_name, username) == 0 || strcmp(all, username) == 0 )
                {
                        printf("%s",line);
                }
        }
       printf("\n");
       fclose(f);
}

void add_bike()
{
        FILE *f;
        f = fopen("OP_BIKE","a+");

        int bike_id;
        int bike_station_id;
        char status[50];

        printf("Add meg a bicikli adatait:");
        printf("\nBicikli azonositoja:\t");
        scanf("%d",&bike_id);
        printf("\nAllomas azonositoja:\t");
        scanf("%d",&bike_station_id);
        printf("\nBicikli statusza:\t");
        scanf("%s",status);

        fprintf(f,"%d\t%d\t%s",bike_id, bike_station_id, status);

        fclose(f);
        printf("Bicikli hozzaadva\r\n");
}

void copy_file(const char *from,const char *to)
{
        FILE *f;
        FILE *temp;
        f = fopen(from,"r");
        temp = fopen(to,"w");
        int length;
        char line[160];
        while(fgets(line,sizeof(line),f) != NULL)
        {
                length = strlen(line);
                printf("%d ,",length);
                if( strcmp(" ",line) != 0){
                        fputs(line,temp);
                }
        }

        fclose(f);
        fclose(temp);

        remove("TEMP");
}

void delete_wrong_bikes()
{
        FILE *f;
        FILE *temp;
        f = fopen("OP_BIKE","r");
        temp = fopen("TEMP","w");
        char line[160];

        while(fgets(line,sizeof(line),f) != NULL)
        {
                int bike_id;
                int bike_station_id;
                char status[50];
                char wrong[] = "rossz";

                sscanf(line,"%d %d %s",&bike_id,&bike_station_id,status);
                if( strcmp(status,wrong) != 0 )
                {
                        fputs(line,temp);
                }
        }

        printf("Sikeres törles\n");
        //remove("OP_BIKE");
        //rename("TEMP","OP_BIKE");

        fclose(f);
        fclose(temp);

        copy_file("TEMP","OP_BIKE");
}

void rent_or_return_bike(int i, char* username,char* action_time)
{
        FILE *f;
        FILE *temp;
        f = fopen("OP_BIKE","r");
        temp = fopen("TEMP","w");
        char line[160];
        int station_index;
        char status_at_i[50];
        int found = 0;
        while(fgets(line,sizeof(line),f) != NULL)
        {
                int bike_id;
                int bike_station_id;
                char status[50];

                sscanf(line,"%d %d %s",&bike_id,&bike_station_id,status);
                if(i != bike_id)
                {
                        fputs(line,temp);
                }
                else
                {
                        if(strcmp("rossz",status) != 0)
                        {
                                found = 1;
                                station_index = bike_station_id;
                                strcpy(status_at_i,status);
                        }
                }
        }
        remove("OP_BIKE");
        rename("TEMP","OP_BIKE");

        fclose(f);
        fclose(temp);

        if(found == 1)
        {
                FILE *f1;
                FILE *f2;
                f1 = fopen("OP_BIKE","a");
                f2 = fopen("OP_BIKE.RENT","a");
                if (strcmp(status_at_i,"szabad") != 0){
                        fprintf(f1,"\n%d\t%d\t%s",i, station_index, "szabad");
                        fprintf(f2,"\n%d\t%s\t%s\t%s",i, username, "visszahozas", action_time);
                        printf("Sikeres visszavétel\n");
                } else {
                        fprintf(f1,"\n%d\t%d\t%s",i, station_index, "foglalt");
                        fprintf(f2,"\n%d\t%s\t%s\t%s",i, username, "kolcsonzes", action_time);
                        printf("Sikeres kölcsönzés\n");
                }
                fclose(f1);
                fclose(f2);
        }
        else
        {
                printf("Nem található szabad bicikli.\n");
        }
        printf("\n");
}

int main()
{
        int exit = 0;
        char c = '0';
        while(exit != 'E'){
                printf("1. Kerékpárok teljes listázása\n");
                printf("2. Egy állomás kerékpárjainak listázása\n");
                printf("3. Rossz kerékpárok törlése\n");
                printf("4. Új hozzáadása\n");
                printf("5. Kölcsönzése // Visszahozása\n");
                printf("6. Kölcsönzések teljes listázása\n");
                printf("7. Egy személy kölcsönzésének listázása\n");
                printf("E. Kilépés\n\n");
                scanf("%s", &c);
                char name[50];
                char time[50];
                char all[5] = "all_";
                int i;

                switch(c){
                        case '1':
                                list_bikes(0);
                                break;
                        case '2':
                                printf("\nÁllomás azonosítóját: ");
                                scanf("%d", &i);
                                list_bikes(i);
                                break;
                        case '3':
                                delete_wrong_bikes();
                                break;
                        case '4':
                                add_bike();
                                break;
                        case '5':
                                printf("\nBicikli azonosítóját: ");
                                scanf("%d", &i);
                                printf("\nAdja meg a felhasználónevét: ");
                                scanf("%s", name);
                                printf("\nAdja meg a kölcsönzés vagy a visszavitel idejét (oo:pp): ");
                                scanf("%s", time);
                                rent_or_return_bike(i, name, time);
                                break;
                        case '6':
                                list_rents(all);
                                break;
                        case '7':
                                printf("\nAdja meg a felhasználónevét: ");
                                scanf("%s", name);
                                list_rents(name);
                                break;
                        case 'E':
                                exit = 'E';
                                break;
                }
        }

        return 0;
}