#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>

// functions to deal with the journal file


FILE *journal_open(char *topic)
{
    char *home_path = getenv("HOME");

    // combine w/ home path
    char *journal_dir = (char*)malloc(1024);
    snprintf(journal_dir, 1024, "%s/.lunabot", home_path);

    // construct a 744
    mkdir(journal_dir, S_IRWXU | S_IRGRP | S_IROTH);

    char *journal_path = (char*)malloc(1024);
    snprintf(journal_path, 1024, "%s/%s", journal_dir, topic);

    FILE* res = fopen(journal_path, "a");

    free(journal_path);
    free(journal_dir);

    return res;
}

void journal_write(FILE* journal_fd, char* message)
{
    // TODO: strlen()?
    fwrite(message, strlen(message), 1, journal_fd);
}

void journal_close(FILE* journal_fd)
{
    fclose(journal_fd);
}

void journal_write_topic(FILE *journal_fd, char *topic, char *message)
{
    char *tstamp = malloc(128 * sizeof(char));
    char fmt_msg[512];

    time_t rawtime;
    time(&rawtime);
    const struct tm *cur_time = gmtime(&rawtime);
    strftime(tstamp, 128, "%c", cur_time);

    sprintf(fmt_msg, "[%s] [%s]: %s\n", tstamp, topic, message);
    free(tstamp);

    journal_write(journal_fd, fmt_msg);
}