Function cbm_ui_config_save

src/ui/config.c:96–137

/* ── Save ────────────────────────────────────────────────────── */

void cbm_ui_config_save(const cbm_ui_config_t *cfg) {
    char path[CBM_SZ_1K];
    cbm_ui_config_path(path, (int)sizeof(path));

    /* Ensure directory exists (recursive) */
    char dir[CBM_SZ_1K];
    snprintf(dir, sizeof(dir), "%s", path);
    char *slash = strrchr(dir, '/');
    if (slash) {
        *slash = '\0';
        cbm_mkdir_p(dir, 0750);
    }

    yyjson_mut_doc *doc = yyjson_mut_doc_new(NULL);
    yyjson_mut_val *root = yyjson_mut_obj(doc);
    yyjson_mut_doc_set_root(doc, root);

    yyjson_mut_obj_add_bool(doc, root, "ui_enabled", cfg->ui_enabled);
    yyjson_mut_obj_add_int(doc, root, "ui_port", cfg->ui_port);

    size_t json_len = 0;
    char *json = yyjson_mut_write(doc, YYJSON_WRITE_PRETTY, &json_len);
    yyjson_mut_doc_free(doc);

    if (!json) {
        cbm_log_error("ui.config.write_fail", "reason", "serialize");
        return;
    }

    FILE *f = fopen(path, "wb");
    if (!f) {
        cbm_log_error("ui.config.write_fail", "path", path);
        free(json);
        return;
    }

    fwrite(json, SKIP_ONE, json_len, f);
    fclose(f);
    free(json);

    cbm_log_debug("ui.config.saved", "path", path);
}