#define _POSIX_C_SOURCE 200809L
#include <err.h>
#include <string.h>
#include <jansson.h>
#include "timeline.h"

struct timeline *timeline_from_json(char *json_data)
{
    json_t *root;
    json_error_t error;
    struct timeline *t;

    root = json_loads(json_data, 0, &error);

    if (!root) {
        fprintf(stderr, "timeline_free(): json root it null\n");
        return NULL;
    }

    if (!json_is_array(root)) {
        fprintf(stderr, "timeline_free(): timeline not initialized\n");
        json_decref(root);
        return NULL;
    }

    t = calloc(1, sizeof(struct timeline));
    if (!t) {
        err(1, "timeline_from_json(): failed to allocate memory");
        json_decref(root);
        return NULL;
    }

    t->size = json_array_size(root);
    t->statuses = calloc(t->size, sizeof(struct status *));
    if (!(t->statuses)) {
        err(1, "timeline_from_json(): failed to allocate memory");
        json_decref(root);
        return NULL;
    }

    for (size_t i = 0; i < t->size; i++) {
        json_t *data;
        data = json_array_get(root, i);
        if (!data)
            goto error;
        t->statuses[i] = status_from_json_t(data);
        if (!(t->statuses[i]))
            goto error;
    }
    json_decref(root);
    return t;

error:
    timeline_free(t);
    json_decref(root);
    return NULL;
}

void timeline_free(struct timeline *t)
{
    if (!t) {
        fprintf(stderr, "timeline_free(): timeline not initialized\n");
        return;
    }
    for (size_t i = 0; i < t->size; i++) {
        if (t->statuses[i])
            status_free(t->statuses[i]);
    }
    free(t);
}