main.tex

%!TEX program = lualatex
\documentclass[
  a4paper,
  BCOR=15mm,
  bibliography=totoc,
  numbers=noenddot,
  headings=optiontotocandhead,
  twoside
]{scrbook}

% packages
\input{common/config/config}

% definitions
\input{common/definitions/definitions}

% private packages
\InputIfFileExists{private/config/config}{}{}

% private definitions
\InputIfFileExists{private/definitions/definitions}{}{}

\begin{document}
\ifbool{setlinenumbers}{\linenumbers}{}

\frontmatter
  \IfFileExists{private/content/titlepage/titlepage}{
    \include{private/content/titlepage/titlepage}
  }{}
  % \listoftodos
  \tableofcontents
  
\mainmatter
  \InputIfFileExists{private/content/content}{}{}

\IfFileExists{private/content/appendices/appendices}{
  \noappendicestocpagenum
  \begin{appendices}
    \crefalias{chapter}{appch}
    \crefalias{section}{appsec}
    \crefalias{subsection}{appsubsec}
    \crefalias{subsubsection}{appsubsubsec}
    \input{private/content/appendices/appendices}
  \end{appendices}
}{}

\backmatter
  \emergencystretch=1em
  \printbibliography

  \InputIfFileExists{private/content/acknowledgement}{}{}

\end{document}