function save_config_json(config, file_path)
%SAVE_CONFIG_JSON Save a config struct to a JSON file.

arguments
    config (1,1) struct
    file_path (1,:) char
end

folder_path = fileparts(file_path);
if ~isempty(folder_path) && ~exist(folder_path, 'dir')
    mkdir(folder_path);
end

json_text = jsonencode(config, PrettyPrint=true);
fid = fopen(file_path, 'w');
if fid == -1
    error('save_config_json:FileOpenFailed', 'Cannot open file: %s', file_path);
end

cleanup_obj = onCleanup(@() fclose(fid));
fprintf(fid, '%s', json_text);