% Opus Orchestrator - Textbook/Academic Template
% Technical, educational, reference

\documentclass[12pt,oneside]{book}

% Packages
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,amssymb}
\usepackage{graphicx}
\usepackage{hyperref}
\usepackage{geometry}
\usepackage{makeidx}
\usepackage{natbib}
\usepackage{titlesec}
\usepackage{booktabs}
\usepackage{listings}
\usepackage{fancyvrb}
\usepackage{multicol}
\usepackage{tcolorbox}

% Geometry
\geometry{
  paperwidth=7in,
  paperheight=10in,
  textwidth=5.5in,
  textheight=8in,
  left=0.75in,
  right=0.75in,
  top=1in,
  bottom=1in,
}

% Hyperref
\hypersetup{
  colorlinks=true,
  linkcolor=blue,
  citecolor=blue,
  urlcolor=blue,
}

% Chapter formatting
\titleformat{\chapter}[display]
  {\normalfont\LARGE\bfseries}
  {\chaptertitlename\ \thechapter}{20pt}{\LARGE\bfseries}

\titleformat{\section}
  {\normalfont\Large\bfseries}
  {\thesection}{12pt}{\Large\bfseries}

\titleformat{\subsection}
  {\normalfont\large\bfseries}
  {\thesubsection}{12pt}{\large\bfseries}

% Headers
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE]{\thepage}
\fancyhead[RO]{\thepage}
\fancyhead[RE]{\leftmark}
\fancyhead[LO]{\rightmark}

% Code listings
\lstset{
  basicstyle=\ttfamily\small,
  frame=single,
  backgroundcolor=\color{lightgray},
  language=Python,
}

% Theorems
\newtcbtheorem[number within=chapter]{theorem}{Theorem}%
{colback=blue!5,colframe=blue!75!black,fonttitle=\bfseries}{th}

\newtcbtheorem[number within=chapter]{definition}{Definition}%
{colback=green!5,colframe=green!75!black,fonttitle=\bfseries}{def}

% Index
\makeindex

% Metadata
\def\booktitle{$book_title$}
\def\bookauthor{$author$}
\def\bookdate{$date$}
\def\bookpublisher{$publisher$}
\def\bookedition{$edition$}

\begin{document}

% Front matter
\frontmatter

% Title page
\begin{titlepage}
\begin{center}
\vspace*{1in}
{\Huge\bfseries\booktitle\par}
\vspace{0.5in}
{\Large\bookauthor\par}
\vfill
{\large\bookedition}\\
\bigskip
{\large\bookpublisher}\\
{\large\bookdate}
\end{titlepage}

% Copyright
\thispagestyle{empty}
\vspace*{\fill}
Copyright \textcopyright\ \bookdate\ \bookauthor\\
All rights reserved.
\vfill

% Dedication
$if(dedication)$
\clearpage
\begin{center}
\textit{$dedication$}
\end{center}
$endif$

% Acknowledgments
$if(acknowledgments)$
\chapter{Acknowledgments}
$acknowledgments$
$endif$

% Preface
$if(preface)$
\chapter{Preface}
$preface$
$endif$

% Abstract
$if(abstract)$
\chapter{Abstract}
$abstract$
$endif$

% Table of contents
\tableofcontents

% List of figures
\listoffigures

% List of tables
\listoftables

% List of listings
\lstlistoflistings

% Main matter
\mainmatter

$body$

% Back matter
\backmatter

% Bibliography
$if(bibliography)$
\bibliographystyle{plainnat}
\bibliography{$bibliography$}
$endif$

% Index
\printindex

\end{document}