\typeout{Adapted from KOMA script for use in Hochschule Hannover <2021-03-18> Jan Wille}
\NeedsTeXFormat{LaTeX2e}

\newcommand{\myClassName}{HsH-report}
\ProvidesClass{\myClassName}[2021/03/18 HsH-Report based on KOMA]

\newcommand{\HsHlogoPath}{HSH-Logo.pdf}
\newcommand{\HsHlogoPage}{1}
\newif\if@german%

\DeclareOption{german}{%
	\PassOptionsToPackage{ngerman}{babel}
	\@germantrue
}
\DeclareOption{ngerman}{%
	\PassOptionsToPackage{\CurrentOption}{babel}
	\@germantrue
}
\DeclareOption{english}{%
	\PassOptionsToPackage{\CurrentOption}{babel}
	\@germanfalse
}
\DeclareOption{f1}{% use logo of fakulty 1
	\renewcommand{\HsHlogoPage}{2}
}
\DeclareOption{f2}{% use logo of fakulty 2
	\renewcommand{\HsHlogoPage}{3}
}
\DeclareOption{f3}{% use logo of fakulty 3
	\renewcommand{\HsHlogoPage}{4}
}
\DeclareOption{f4}{% use logo of fakulty 4
	\renewcommand{\HsHlogoPage}{5}
}
\DeclareOption{f5}{% use logo of fakulty 5
	\renewcommand{\HsHlogoPage}{6}
}
\DeclareOption{sans}{% use san serif font
	\renewcommand{\familydefault}{\sfdefault}
}
\DeclareOption{roman}{% use roman/serif font
	\renewcommand{\familydefault}{\rmdefault}
}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{scrreprt}}

\ExecuteOptions{fontsize=11pt,a4paper,sans} % standart options
\ProcessOptions\relax

% Load KOMA class
\LoadClass{scrreprt}
\KOMAoption{toc}{bibliography,listof}

% standart options for packages
\PassOptionsToPackage{utf8}{inputenc}
\PassOptionsToPackage{T1}{fontenc}
\PassOptionsToPackage{left=3cm,right=2.5cm,top=3cm,bottom=3cm}{geometry}
\PassOptionsToPackage{hidelinks}{hyperref}
\PassOptionsToPackage{headsepline}{scrlayer-scrpage}
\PassOptionsToPackage{babel}{csquotes}
\if@german\PassOptionsToPackage{german=quotes}{csquotes}\fi

\PassOptionsToPackage{backend=biber,style=alphabetic,sorting=nyt}{biblatex}
\PassOptionsToPackage{free-standing-units,abbreviations}{siunitx}
\PassOptionsToPackage{european,EFvoltages,straightvoltages,betterproportions}{circuitikz}

% used packages:
\RequirePackage{inputenc} % inputencoding, utf8 recomendet
\RequirePackage{fontenc} % outputencoding, T1 recomendet
\RequirePackage{lmodern} % font
\RequirePackage{babel} % required for german names
\RequirePackage{geometry} % required for changing layout
\RequirePackage{scrlayer-scrpage} % required for header and footer
\RequirePackage{scrhack} % compatability with listings
\RequirePackage{pgffor} % foreach loops
\RequirePackage{graphicx} % required for importing images
\RequirePackage{hyperref} % references and lists are clikable
\RequirePackage{bookmark} % generat bookmarkes
\RequirePackage{amsmath} % a lot of nice Math
\RequirePackage{csquotes} % quotations
\if@german\RequirePackage{ziffer}\fi % german dezimal numbers


% internal commands
\newtoks\@tabtoks
\newcommand\addtabtoks[1]{\global\@tabtoks\expandafter{\the\@tabtoks#1}}
\newcommand\eaddtabtoks[1]{\edef\mytmp{#1}\expandafter\addtabtoks\expandafter{\mytmp}}
%\newcommand*\resettabtoks{\global\@tabtoks{}}
\newcommand*\printtabtoks{\the\@tabtoks}

% config for title, header and footer
\newcommand*{\@matrikelnr}{}%
\newcommand{\matrikelnr}[1]{\gdef\@matrikelnr{#1}}%
\newcommand*{\@professor}{}%
\newcommand{\professor}[1]{\gdef\@professor{#1}}%
\newcommand*{\@keywords}{}%
\newcommand{\keywords}[1]{\gdef\@keywords{#1}}%
\let\@author\@empty
\let\@keywords\@empty
\InputIfFileExists{personal.tex}{
	\ClassInfo{\myClassName}{personal.tex was found. Using it...}
}{
	\ClassInfo{\myClassName}{no personal.tex! Configre the titlepage yourselfe}
}
\pagestyle{scrheadings}
\clearpairofpagestyles
\renewcommand*{\chapterpagestyle}{scrheadings} % Chaptertitles get same header/footer as everything
\automark{chapter}
\ohead{\headmark}
\ihead{\@title}
\ofoot*{\pagemark}

% typesetting indexes upright or standart
\def\subinrm#1{\sb{\mathrm{#1}}}
{\catcode`\_=13 \global\let_=\subinrm}
\mathcode`_="8000
\newcommand\upsubscripts{\catcode`\_=12 } % the toggle for upright subscripts
\newcommand\normalsubscripts{\catcode`\_=8 } % the toggle for italic subscripts
\upsubscripts % setting upright as default

% styling for itemize
\renewcommand{\labelitemi}{$\bullet$}
\renewcommand{\labelitemii}{$\circ$}
\renewcommand{\labelitemiii}{$-$}
\renewcommand{\labelitemiv}{$\cdot$}

% custom commands
\newcommand{\includeHsHlogohere}[1][5cm]{\includegraphics[width=#1,page=\HsHlogoPage]{\HsHlogoPath}}
\newcommand{\uproman}[1]{\uppercase\expandafter{\romannumeral#1}}
\newcommand{\lowroman}[1]{\romannumeral#1\relax}

% do stuff
\setlength\parindent{0pt} % indentation of new paragraphs
\raggedbottom
\renewcommand{\fps@figure}{h!t} % positioning of figures
\renewcommand{\fps@table}{h!t} % Positonierung of tables
\renewcommand{\layercontentsmeasure}{\empty} % rulers when using draft disabled
\MakeOuterQuote{"} % easy quotationmarks
\addtokomafont{publishers}{\normalsize}


% load config at beginning of document
\AtBeginDocument{
	\makeatletter
	% solve some common errors:
	\@ifpackageloaded{biblatex}{
		\renewcommand*{\mkbibacro}[1]{\MakeUppercase{#1}} % solves fontype warning in San-Serif
	}{}%
	\@ifpackageloaded{subfigure}{
		\newcommand{\subfigureautorefname}{\figureautorefname}
	}{}%
	% input config File:
	\InputIfFileExists{config.tex}{
		\ClassInfo{\myClassName}{config.tex was found. Using it...}
	}{
		\ClassInfo{\myClassName}{no config.tex!! I hope you configered it yourself.}
	}
	% provide some usefull commands:
	\providecommand{\abs}[1]{\ensuremath{\left\vert#1\right\vert}} % Makro for vertical lines around absolute values
	\makeatother
}

% nicer abstract:
\renewenvironment{abstract}{%
	\chapter*{\centering\abstractname}
	\addcontentsline{toc}{chapter}{\abstractname}
		\small
		\quotation
}{%
	\ifx\@keywords\@empty\else
		\vspace{1cm}
		\paragraph{\if@german Schlüsselwörter:\else Keywords:\fi}
		\@keywords
	\fi
	\endquotation
}

% decloration of Authorship
\newif\if@oneAuthor \@oneAuthortrue
\if@german
	\setlocalecaption{ngerman}{dATitle}{Selbstständigkeitserklärung}
	\setlocalecaption{ngerman}{dAPronomen}{\if@oneAuthor ich\else wir\fi}
	\setlocalecaption{ngerman}{dAPluralendung}{\if@oneAuthor\else n\fi}
	\setlocalecaption{ngerman}{dAGenitiv}{\if@oneAuthor mir\else uns\fi}
	\setlocalecaption{ngerman}{dAText}{
			Hiermit bestätige\dAPluralendungname\space\dAPronomenname, dass die folgende Arbeit eigenständig von \dAGenitivname\space allein erstellt
			und unter Berücksichtigung der zur Verfügung gestellten Aufgabenstellung sowie dem Arbeitsmaterial unter Angabe aller verwendeten Quellen
			erarbeitet wurde. Die Regelungen und Konsequenzen eines Plagiats, inklusive disziplinarischer Maßnahmen, sind \dAGenitivname\space
			bewusst. Insbesondere wurden alle Zitate und gedanklichen Übernahmen als solche kenntlich gemacht.
	}
\else
	\setlocalecaption{english}{dATitle}{Declaration of Authorship}
	\setlocalecaption{english}{dAPronomen}{\if@oneAuthor I\else we\fi}
	\setlocalecaption{english}{dAPronomenf}{\if@oneAuthor I\else We\fi}
	\setlocalecaption{english}{dAPronomverb}{\if@oneAuthor am\else are\fi}
	\setlocalecaption{english}{dAGenitiv}{\if@oneAuthor my\else our\fi}
	\setlocalecaption{english}{dAText}{
		\dAPronomenfname\space hereby certify that the work \dAPronomenname\space\dAPronomverbname\space submitting is entirely of
		\dAGenitivname\space own making except where otherwise indicated. \dAPronomenfname\space\dAPronomverbname\space aware of regulations
		concerning plagiarism, including disciplinary actions that may result from it. Any use of the works of any other author, in any form, is
		properly acknowledged at their point of use.
	}
\fi
\newcommand\declarationAuthorship{
	\renewcommand{\thanks}{\sbox0}
	\foreach \x [count=\i] in \@author{\ifnum\i>1\global\@oneAuthorfalse\fi}
%
	\thispagestyle{plain}
	\vspace*{\fill}
	{\rule{\textwidth}{0.1pt}}
	\vskip 3em
	{\centering\huge\textbf{\dATitlename}\par}
	\vskip 3em
	{\dATextname\par}
	{\raggedleft
		\foreach \x in \@author{
			\begin{tabular}[t]{r}
				\\[3em]
				\rule{4cm}{0.4pt}\\
				{\footnotesize\x}
			\end{tabular}
		}
	\par}
}

% reconfig Titlepage
\renewcommand\maketitle[1][l]{%
	\expandafter\ifnum \csname scr@v@3.12\endcsname>\scr@compatibility\relax
	\else
		\def\and{%
			\end{tabular}%
			\hskip 1em \@plus.17fil%
			\begin{tabular}[t]{c}%
		}%
	\fi
	\begin{titlepage}
		\let\@param#1
		\ifx\@param\@empty\ClassError{\myClassName}{\maketitle\space with empty option}{
				\maketitle[] has been called with an empty parameter, this doesn't work. Use \maketitle instead.
			}
		\fi
		\if@titlepageiscoverpage
			\edef\titlepage@restore{%
				\noexpand\endgroup
				\noexpand\global\noexpand\@colht\the\@colht
				\noexpand\global\noexpand\@colroom\the\@colroom
				\noexpand\global\vsize\the\vsize
				\noexpand\global\noexpand\@titlepageiscoverpagefalse
				\noexpand\let\noexpand\titlepage@restore\noexpand\relax
			}%
			\begingroup
			\topmargin=\dimexpr \coverpagetopmargin-1in\relax
			\oddsidemargin=\dimexpr \coverpageleftmargin-1in\relax
			\evensidemargin=\dimexpr \coverpageleftmargin-1in\relax
			\textwidth=\dimexpr
			\paperwidth-\coverpageleftmargin-\coverpagerightmargin\relax
			\textheight=\dimexpr
			\paperheight-\coverpagetopmargin-\coverpagebottommargin\relax
			\headheight=0pt
			\headsep=0pt
			\footskip=\baselineskip
			\@colht=\textheight
			\@colroom=\textheight
			\vsize=\textheight
			\columnwidth=\textwidth
			\hsize=\columnwidth
			\linewidth=\hsize
		\else
			\let\titlepage@restore\relax
		\fi
		\let\footnotesize\small
		\let\footnoterule\relax
		\let\footnote\thanks
		\renewcommand*\thefootnote{\@fnsymbol\c@footnote}%
		\let\@oldmakefnmark\@makefnmark
		\renewcommand*{\@makefnmark}{\rlap\@oldmakefnmark}%
		\ifx\@extratitle\@empty
			\ifx\@frontispiece\@empty
			\else
				\if@twoside\mbox{}\next@tpage\fi
				\noindent\@frontispiece\next@tdpage
			\fi
		\else
			\noindent\@extratitle
			\ifx\@frontispiece\@empty
			\else
				\next@tpage
				\noindent\@frontispiece
			\fi
			\next@tdpage
		\fi
		\setparsizes{\z@}{\z@}{\z@\@plus 1fil}\par@updaterelative
		\IfFileExists{\HsHlogoPath}{}{
			\ClassError{\myClassName}{HsH-Logo.pdf not found!}{
				The HsH Logo is necasary for the titlepage! Try putting it next to your source file or use \HsHlogoPath to define the file location
			}
		}
		\vspace*{1cm}
		\begin{minipage}[t]{\textwidth}%
			\ifx\@titlehead\@empty \else
				\usekomafont{titlehead}{\@titlehead}%
			\fi
			\hfill
			\raisebox{0pt}[\ht\strutbox][\dp\strutbox]{\includeHsHlogohere} % image referrencepoint in lower left corner
		\end{minipage}
		\raisebox{10pt}{\rule{\textwidth}{0.5pt}}
		\null\vfill
		\if\@param c\begin{center}\fi
		\if\@param r\begin{flushright}\fi
			\ifx\@subject\@empty \else
				{\usekomafont{subject}{\@subject\par}}%
				\vskip 3em
			\fi
			{\usekomafont{title}{\huge\@title\par}}%
			\vskip 1em
			{\ifx\@subtitle\@empty\else\usekomafont{subtitle}{\@subtitle\par}\fi}%
			\vskip 4em
			{\ifx\@matrikelnr\@empty
				\if\@author\@empty\else\usekomafont{author}{
					\parbox{\dimexpr\linewidth}{
						\if\@param c\centering\fi
						\if\@param r\raggedleft\fi
						\@author
					}
				}\fi
			\else
				\if\@author\@empty\else
					% sneeky comma needed after \@matrikelnr to deal with single item list
					\foreach \x [count=\i,evaluate=\i as \y using {{\@matrikelnr,}[\i-1]}] in \@author {\eaddtabtoks{\x & \y\protect\\}}
					\usekomafont{author}{\def\arraystretch{1.2}
						\if\@param l\hspace{-6pt}\begin{tabular}{l l}\printtabtoks\end{tabular}\fi
						\if\@param c\begin{tabular}{l l}\printtabtoks\end{tabular}\fi
						\if\@param r\begin{tabular}{r r}\printtabtoks\end{tabular}\hspace{-6pt}\fi
					}
				\fi
			\fi}%
			\vskip 1.5em
			{\usekomafont{date}{\@date \par}}
			\vskip \z@ \@plus3fill
			{\if\@professor\@empty\else\usekomafont{publishers}{Professor\if@german(in)/Lehrbeauftragte(r)\fi: \@professor}\fi}
			\vskip 3em
		\if\@param c\end{center}\fi
		\if\@param r\end{flushright}\fi
		\par
		\@thanks\global\let\@thanks\@empty
		\vfill\null
		\if@twoside
			\@tempswatrue
			\expandafter\ifnum \@nameuse{scr@v@3.12}>\scr@compatibility\relax
			\else
				\ifx\@uppertitleback\@empty\ifx\@lowertitleback\@empty
					\@tempswafalse
				\fi\fi
			\fi
			\if@tempswa
				\next@tpage
				\begin{minipage}[t]{\textwidth}
					\@uppertitleback
				\end{minipage}\par
				\vfill
				\begin{minipage}[b]{\textwidth}
					\@lowertitleback
				\end{minipage}\par
				\@thanks\global\let\@thanks\@empty
			\fi
		\else
			\ifx\@uppertitleback\@empty\else
				\ClassWarning{\KOMAClassName}{%
					non empty \string\uppertitleback\space ignored
					by \string\maketitle\MessageBreak
					in `twoside=false' mode%
				}%
			\fi
			\ifx\@lowertitleback\@empty\else
				\ClassWarning{\KOMAClassName}{%
					non empty \string\lowertitleback\space ignored
					by \string\maketitle\MessageBreak
					in `twoside=false' mode%
				}%
			\fi
		\fi
		\ifx\@dedication\@empty
		\else
			\next@tdpage\null\vfill
			{\centering\usekomafont{dedication}{\@dedication \par}}%
			\vskip \z@ \@plus3fill
			\@thanks\global\let\@thanks\@empty
			\cleardoubleemptypage
		\fi
		\ifx\titlepage@restore\relax\else\clearpage\titlepage@restore\fi
	\end{titlepage}
	\setcounter{footnote}{0}%
	\expandafter\ifnum \csname scr@v@3.12\endcsname>\scr@compatibility\relax
		\let\thanks\relax
		\let\maketitle\relax
		\let\@maketitle\relax
		\global\let\@thanks\@empty
		\global\let\@author\@empty
		\global\let\@date\@empty
		\global\let\@title\@empty
		\global\let\@subtitle\@empty
		\global\let\@extratitle\@empty
		\global\let\@frontispiece\@empty
		\global\let\@titlehead\@empty
		\global\let\@subject\@empty
		\global\let\@publishers\@empty
		\global\let\@uppertitleback\@empty
		\global\let\@lowertitleback\@empty
		\global\let\@dedication\@empty
		\global\let\@matrikelnr\@empty
		\global\let\@professor\@empty
		\global\let\author\relax
		\global\let\title\relax
		\global\let\extratitle\relax
		\global\let\titlehead\relax
		\global\let\subject\relax
		\global\let\publishers\relax
		\global\let\uppertitleback\relax
		\global\let\lowertitleback\relax
		\global\let\dedication\relax
		\global\let\date\relax
		\global\let\matrikelnr\relax
		\global\let\professor\relax
	\fi
	\global\let\and\relax
}%
