**Context**

My target is to have a simple way to toggle between `(beamer)article` and `beamer` and produce multiple pdf formats. 

Ultimately (I am almost there), I'd like to 
- fill a simple file of parameters (pgfkeys) (could be a very long list)
- launch a batch file gobbling these parameters to produce after compilation(s)
	- Notes in `article` mode 
	- Slides in `beamer`
	- Slides in 2x1 mode (in case some students want to print their slides) with  		
    	
        `\usepackage{pgfpages}`
        
		`\pgfpagesuselayout{2 on 1}[a4paper,border shrink=2mm] `
	- any other variation available in the keys.  

**My question(s)**

1. I struggle with `pgfkeys` and use probably too many `if` to define what should be for both `beamerarticle` and `beamer` or specific to one of each.
2. Marmot suggested there was a way to include the `pgfkeys` in the batch.
3. Don't know whether I should use this batch method or `arara` or `latexmk` that are faaaar from my level of understanding so far...


**Questions already answered to build my question**

> **What `\documentclass` to load ?**

 Define whether I should load `article` or `beamer`
 
 https://tex.stackexchange.com/questions/1492/passing-parameters-to-a-document 

No alternative right ?

```
\if 0\model
  \documentclass[...]{article}
   \usepackage[envcountsect]{beamerarticle}  
\fi

\if 1\model
  \documentclass{beamer}
\fi
```

> **Definition of pgfkeys**

How to use pgfkeys to (elegantly) parameter my document (from which I take a modified MWE.)
https://topanswers.xyz/tex?q=1375


> **Batch to create the different contents**

I finally create a `batch.bat` that will produce 2 versions but i'd like to pass pgfkeys here, to have the flexibility to produce more outputs.

For instance, to pass
```
\usepackage{pgfpages}
\pgfpagesuselayout{n on 1}[a4paper,border shrink=2mm]
```
to produce a pdf with `n` slides per page.

So far this seems to work to create the `beamer` and `article` version.

```
pdflatex -synctex=1 -interaction=nonstopmode --shell-escape  "\def\model{0}\input{"MWE.tex"}" --jobname=MWE_article
pdflatex -synctex=1 -interaction=nonstopmode --shell-escape  "\def\model{1}\input{"MWE.tex"}" --jobname=MWE_beamer
del /s *.aux *.log *.gz *.out *.nav *.snm *.vrb *.bbl *.synctex(busy) *.synctex.gz  *.defs *.loe *.lot *.lof *.dep *.toc *.xtr
```

The batch will compile the following document.

```
------           MWE.tex           ----------
\def\model{1}		% I have to turn that off if I use MWE in the batch. (

\if 0\model 
\documentclass{article}
\usepackage{beamerarticle}
\fi

\if 1\model 
\documentclass{beamer}
\fi

%% I use 3 different preambles to store the keys and it does not seem right.

\begin{filecontents}[overwrite]{preambleJeT.sty}
\RequirePackage{pgfopts}	

\pgfkeys{/JeT/.cd,
		common/.cd,
			author/.code={\author{#1}},
			author/.default={JeT},			
			title/.code={\title{#1}},
			subtitle/.code={\subtitle{#1}},
			institute/.code={\institute{#1}},
			institute/.default={Univeristy},			
		standard/.style={
			author,
			title={Course title},
			subtitle=Session 1,
			institute,
			}	 
}	
\ProcessPgfOptions{/JeT/common}
\end{filecontents}

\if 0\model

\begin{filecontents}[overwrite]{beamerpreambleJeT.sty}
\RequirePackage{pgfopts}	
\pgfkeys{/JeT/.cd,
		beamer/.cd,
			theme/.code={\usetheme{#1}},
			colortheme/.code={\usecolortheme{#1}},
		standard-beamer/.style={
			theme={CambridgeUS},
			colortheme=crane,
			}	 
}	
\ProcessPgfOptions{/JeT/beamer}

\end{filecontents}
\fi

\if 1\model
\begin{filecontents}[overwrite]{articlepreambleJeT.sty}
\RequirePackage{pgfopts}	

\pgfkeys{/JeT/.cd,
		article/.cd,
			font/.is choice,
				font/fourier/.code={
					\usepackage{fourier}
					\usepackage[scaled=0.875]{helvet} 
					\renewcommand{\ttdefault}{lmtt}},
			font/Latin-Modern/.code={
				\usepackage{lmodern}
				\usepackage[T1]{fontenc}},			
			font/.default ={fourier},				
		standard/.style={
			font
			}	 
}	
\ProcessPgfOptions{/JeT/article}
\end{filecontents}
\fi

\usepackage[standard,author={JeTov}]{preambleJeT}

\if 0\model 
\usepackage[standard]{articlepreambleJeT}	
\fi
\if 1\model 
\usepackage[standard-beamer,theme={Hannover}]{beamerpreambleJeT} 
\fi

\begin{filecontents}[overwrite]{main.tex}
\maketitle

\begin{frame}[t]
	\frametitle{Pft}
	This is a test.
\end{frame}
\end{filecontents}


\begin{document}

\input{main}

\end{document}
```