#include "file_handler.h"

int loadListFromCSV(char *_filename, list_t *_list)
{
    FILE *f_in = fopen(_filename, "r");
    if (f_in == NULL)
    {
        // doprasit
        exit(-1);
    }

    char *buffer = NULL;
    size_t buffer_size = 0;

    int load_sum = 0;

    char _name[128], _surname[128];
    uint32_t _department;
    uint16_t _uuid;
    time_t _last_event, _total;
    BYTE _avail;
    while (-1 != getline(&buffer, &buffer_size, f_in))
    {
        if (sscanf(buffer, "%hu,%127[^,],%127[^,],%u,%ld,%ld,%hhu", &_uuid, _name, _surname, &_department, &_last_event, &_total, &_avail) == 7)
        {
            loadPersonToList(_list, _uuid, _name, _surname, _department, _last_event, _total, _avail);
            load_sum++;
        }
        else
        {
            // vstupni databaze je vadna
            exit(-1);
        }
    }
    free(buffer);
    fclose(f_in);
    return load_sum;
}

int saveListToCSV(char *_filename, list_t *_list)
{
    FILE *f_out = fopen(_filename, "w");
    if (f_out == NULL)
    {
        // doprasit
        exit(-1);
    }

    node_t *cursor = _list->head;
    while (cursor != NULL)
    {
        if (cursor->user.uuid != 0)
        {
            fprintf(f_out, "%hu,%s,%s,%u,%ld,%ld,%hhu\n", cursor->user.uuid, cursor->user.name, cursor->user.surname, cursor->user.department, cursor->user.last_time_event, cursor->user.total, cursor->user.available);
        }
        cursor = cursor->next;
    }

    int save_sum = 0;

    fclose(f_out);
    return save_sum;
}

int exportPersonInfo(node_t *_person)
{
    char filename[64];
    sprintf(filename, "person_uuid%d.txt", _person->user.uuid);

    FILE *f_out = fopen(filename, "w");
    if (f_out == NULL)
    {
        return 0;
    }

    char last_time_event_str[64];
    printDateAndTimeInString(_person->user.last_time_event, last_time_event_str);

    char total_time_str[64];
    printTimeInString(_person->user.total, total_time_str);

    fprintf(f_out, "NAME: %s\nSURNAME: %s\nDEPARTMENT: %d\nLAST TIME EVENT: %s\nTOTAL TIME: %s\n", _person->user.name, _person->user.surname, _person->user.department, last_time_event_str, total_time_str);

    fclose(f_out);

    return 1;
}