% !TEX root = ../../HSRTReport.cls
% ==============================================================================
% Logos Module
% ==============================================================================
% Description: Logo management and positioning for title and footer pages
% Author: Frederik Beimgraben
% License: Creative Commons CC BY 4.0
% ==============================================================================

% ==============================================================================
% Logo Scale Settings
% ==============================================================================
\newcommand{\logosScale}{1}
\newcommand{\mainLogoScale}{1}
\newlength{\imageHeight}

% Set the scale for all logos
\DeclareRobustCommand{\SetLogosScale}[1]{
	\renewcommand{\logosScale}{#1}
}

% ==============================================================================
% Logo Array Management
% ==============================================================================
% Configure array handling for global scope
\let\newglobalarray\newarray
\patchcmd{\newglobalarray}{\edef}{\xdef}{}{}

% Enable array element expansion
\expandarrayelementtrue

% ==============================================================================
% Logo Storage Arrays
% ==============================================================================
% Arrays to store logo properties
\newglobalarray\LogosPaths
\newglobalarray\LogosScales
\newglobalarray\LogosOpacities
\newglobalarray\LogosExtensions

% Counter for number of logos
\newcounter{logoCounter}
\setcounter{logoCounter}{0}

% ==============================================================================
% Logo Management Commands
% ==============================================================================
% Add a logo to the arrays
% Usage: \AddLogo{<Name>}{<Scale>}{<Opacity>}{<Extension>}
\DeclareRobustCommand{\AddLogo}[4]{
\stepcounter{logoCounter}
\LogosPaths(\thelogoCounter)={#1}
\LogosScales(\thelogoCounter)={#2}
\LogosOpacities(\thelogoCounter)={#3}
\LogosExtensions(\thelogoCounter)={#4}
}

% Get opacity value for a specific logo
\DeclareRobustCommand{\GetLogoOpacity}[1]{
	\expand{\LogosOpacities(#1)}
}

% ==============================================================================
% Title Page Data Management
% ==============================================================================
% Token register to store title page data
\newtoks\titlePageData
\def\tand{&}
\titlePageData={\tand}

% Add vertical space to title page data
\DeclareRobustCommand{\AddTitlePageDataSpace}[1]{
	\titlePageData=\expandafter{\the\titlePageData \vspace{#1}}
}

% Add a data line to title page (key-value pair)
\DeclareRobustCommand{\AddTitlePageDataLine}[2]{
	\titlePageData=\expandafter{\the\titlePageData\\ \textbf{#1}\tand #2}
}

% Get formatted title page data table
\DeclareRobustCommand{\GetTitlePageDataTable}{
	\begin{tabular}{@{} p{30mm} p{\textwidth-30mm-2\tabcolsep}}
		\the\titlePageData
	\end{tabular}
}

% ==============================================================================
% Background Graphics Configuration
% ==============================================================================
% Path to skyline graphic
\def\skylinePath{\classPath/Assets/Images/Skyline.svg}

% Footer positioning
\newcommand{\footerYShift}{1.5em}
\newcommand{\footerXShift}{0.7em}

% ==============================================================================
% Logo Placement on Pages
% ==============================================================================
% Define logo positioning at beginning of each page
\AtBeginPage{
	\setlength{\imageHeight}{2cm*\real{\mainLogoScale}*\real{\logosScale}*\real{0.45}}
	\begin{tikzpicture}[overlay, remember picture]
		% === Main Logo(s) ===
		\node[anchor=south east, inner sep=0pt, xshift=-\footerXShift, yshift=\footerYShift, opacity=0.0] (logo0) at (current page.south east) {
			\strcompare{\thepage}{1}{}{
				\includegraphics[height=\imageHeight]{\imagesPath/DUMMY_FOOT.png}
			}
		};
		\ifnum\thepage=1
		\else
			% For loop to place all logos
			\foreach \i in {1,...,\value{logoCounter}} {
					% Calculate name for i-1
					\pgfmathtruncatemacro{\prev}{\i-1}
					\node[anchor=east, inner sep=0pt, xshift=-0.1cm, opacity=0.3] (logo\i) at (logo\prev.west) {
						\makeatletter
						\testarray{LogosScales}(\i)
						\setlength{\imageHeight}{1.5cm*\real{\temp@macro}*\real{\logosScale}*\real{0.55}}
						\testarray{LogosExtensions}(\i)
						\let\extension\temp@macro
						\testarray{LogosOpacities}(\i)
						\let\opacity\temp@macro
						\testarray{LogosPaths}(\i)
						\ifthenelse{\equal{\extension}{svg}}{
							\begin{tikzpicture}
								\node[opacity=\opacity] {
									\includesvg[height=\imageHeight]{\classPath/Assets/Images/\temp@macro.\extension}
								};
							\end{tikzpicture}
						}{
							\begin{tikzpicture}
								\node[opacity=\opacity] {
									\includegraphics[height=\imageHeight]{\classPath/Assets/Images/\temp@macro.\extension}
								};
							\end{tikzpicture}
						}
						\makeatother
					};
				}
		\fi
		% Skyline
		\node[anchor=south west, inner sep=0pt, yshift=0em] at (current page.south west) {
			\includesvg[width=1.5\paperwidth]{\skylinePath}
		};
	\end{tikzpicture}
}

% ==============================================================================
% End of Logos Module
% ==============================================================================
