/*
 * File:   main.c
 *
 * Created on 11 aprile 2011, 15.34
 */

#include "lib.c"

/*
 * h
 */


int main(){
    int i=0, j, flag=0, nAccounts=0;
    char *buf=malloc(BUFSIZ);
    char path[BUFSIZ];
    FILE *fp, *fp2;
    DIR *dp;
    user *users;
    struct dirent *ep;

    /* Checking if is the first time that the app is running */

    dp=opendir("dir");
    /* if there is not the 'dir' directory, i will create it */
    if(errno==ENOENT){
        mkdir("dir", 0777);
        dp=NULL;
    }
    /* if 'dir' exists, i look for 'admin' file */
    if (dp!=NULL){
        ep=readdir(dp);
        while (ep){
            if(!strcmp(ep->d_name, "admin")){
                closedir(dp);
                flag=1;
            }
            ep=readdir (dp);
        }
    }
    if(flag){
        /* 'admin' file exists, so isn't the first time */
        /* i'm going to load data */
        printf("admin trovato\n");
        fp=fopen("dir/usrs","r");
        if(fp==NULL){
            perror("admin file creation");
            return EXIT_FAILURE;
        }
        printf("Conto il n. di accounts: ");
        while((fgets(buf,BUFSIZ,fp)) != NULL) {
            nAccounts++;
        }
        printf("%d\n",nAccounts);
        users=(user *)malloc(nAccounts*sizeof(user));
        rewind(fp);

        printf("importo i dati\n");
        for(i=0;i<nAccounts;i++){
            strcat(path, "dir/");
            strcat(path,fgets(buf,BUFSIZ,fp));

            fp2=fopen(path, "r");
            if(fp2==NULL){
                perror("admin file read");
                return EXIT_FAILURE;
            }
            printf("importing data for '%s' . . .\n", fgets(buf,BUFSIZ,fp));
            fread(&users[i],sizeof(user),1,fp2);
        }
    }

    /* 'admin' file not exists then, is the first time */
    /* and it must be created */
    else{
        printf("admin non trovato\n");
        printf("Creazione account...\n");
        nAccounts=1;
        users=(user *)malloc(nAccounts*sizeof(user));
        i=0;
        strcpy(users[i].username,"admin");
        printf("Insert a password for the 'admin' account: ");
        scanf("%s",users[i].password);
        users[i].bytes_quota=DEFAULT_QUOTA_SIZ; /* default quota: 1MB */
        fp=fopen("dir/admin", "w");
        if(fp==NULL){
            perror("admin file creation");
            return EXIT_FAILURE;
        }
        fwrite(&users[i],sizeof(user),1,fp);
        fclose(fp);

        /* 'usrs' file contains a list of all system users */
        /* i'm going to update it */
        fp=fopen("dir/usrs", "w");
        if(fp==NULL){
            perror("admin file creation");
            return EXIT_FAILURE;
        }
        fprintf(fp,"admin\n");
        fclose(fp);
    }
    printf("__PRIMA_STAMPA_MAIN__\n");
    for(i=0;i<nAccounts;i++){
        printf("username: %s\npassword: %s\nbytes_quota: %ld\nnMessages: %ld\n", users[i].username, users[i].password, users[i].bytes_quota, users[i].nMessages);
        for(j=0;j<users[i].nMessages;j++){
            printf("\tdestination: %s\n\tsubject: %s\n\ttext: %s",users[i].msgs[j].destination,users[i].msgs[j].subject,users[i].msgs[j].text);
        }
    }

    if(!addUser("nuovo_utente", users,nAccounts)){
        perror("adduser");
        return EXIT_FAILURE;
    }
    else{
        printf("__SECONDA_STAMPA_MAIN__\n");
        for(i=0;i<nAccounts;i++){
        printf("username: %s\npassword: %s\nbytes_quota: %ld\nnMessages: %ld\n", users[i].username, users[i].password, users[i].bytes_quota, users[i].nMessages);
            for(j=0;j<users[i].nMessages;j++){
                printf("\tdestination: %s\n\tsubject: %s\n\ttext: %s",users[i].msgs[j].destination,users[i].msgs[j].subject,users[i].msgs[j].text);
            }
        }

    }

    printf("exit_success;\n");
    return EXIT_SUCCESS;
}