% set languages
\usepackage{polyglossia}
% recommended
\usepackage{csquotes}
\setmainlanguage{\mainlanguage}
\setotherlanguages{\otherlanguages}

% imports

\input{settings}
\input{variables}

% handle multiple languages

\newcommand{\ifstreq}[4]{\expandafter\ifstrequal\expandafter{#1}{#2}{#3}{#4}}

\def\todo{TODO}

\newcommand{\ml}[2]{%
\ifstreq{\mainlanguage}{english}{\ifstrempty{#1}{\todo}{#1}}{%
\ifstreq{\mainlanguage}{french}{\ifstrempty{#2}{\todo}{#2}}{%
ERROR%
}}%
}

\newcommand{\en}[1]{\textenglish{#1}}

\newcommand{\fr}[1]{\textfrench{#1}}