Cfrgtkky

I am trying to customize a template initially designed for novels. I have added to it sections and I would like to see, as headers, on the left page, the title of the book, at the center of the page, and, on the right page and at the center of the page, the title of the chapter. I'd like especially to see all the subsections numbered in my toc. How could I do that?

This is my mwe:

documentclass[smalldemyvopaper,10pt,twoside,onecolumn,openright,extrafontsizes]{memoir}

usepackage[utf8]{inputenc}

usepackage [frenchb]{babel}

usepackage[T1]{fontenc}

usepackage[osf]{Alegreya,AlegreyaSans}





usepackage{lipsum}



% PACKAGE DEFINITION

% typographical packages

usepackage{microtype} % for micro-typographical adjustments

usepackage{setspace} % for line spacing

usepackage{lettrine} % for drop caps and awesome chapter beginnings

usepackage{titlesec} % for manipulation of chapter titles



% for placeholder text

usepackage{lipsum} % to generate Lorem Ipsum









% other

usepackage{calc}

usepackage{hologo}

usepackage[hidelinks]{hyperref}

%usepackage{showframe}

% PHYSICAL DOCUMENT SETUP

% media settings

setstocksize{8.5in}{5.675in}

settrimmedsize{8.5in}{5.5in}{*}

setbinding{0.175in}

setlrmarginsandblock{0.611in}{1.222in}{*}

setulmarginsandblock{0.722in}{1.545in}{*}



% defining the title and the author

%title{LaTeX{} ePub Template}

%title{textsc{How I Started to Love {fontfamily{cmr}selectfontLaTeX{}}}}

title{A title}



author{My name}

newcommand{ISBN}{0-000-00000-2}

newcommand{press}{Nom de l'éditeur}



% custom second title page

makeatletter

newcommand*halftitlepage{begingroup % Misericords, T&H p 153

  setlengthdrop{0.1textheight}

  begin{center}

  vspace*{drop}

  rule{textwidth}{0in}par

  {Largetextscthetitlepar}

  rule{textwidth}{0in}par

  vfill

  end{center}

endgroup}

makeatother



% custom title page

thispagestyle{empty}

makeatletter

newlengthdrop

newcommand*titleM{begingroup % Misericords, T&H p 153

  setlengthdrop{0.15textheight}

  begin{center}

  vspace*{drop}

  rule{textwidth}{0in}par

  {HUGEtextscthetitlepar}

  rule{textwidth}{0in}par

  {Largetextittheauthorpar}

  vfill

  {Largescshapepress}

  end{center}

endgroup}

makeatother



% chapter title manipulation

% padding with zero

%renewcommand*thechapter{ifnumvalue{chapter}<10 0fiarabic{chapter}}

% chapter title display

titleformat

{chapter}

[display]

{normalfontscshapeLARGE}

{hugethechaptercentering}

{0pt}

{vspace{18pt}centering}[vspace{22pt}]



% typographical settings for the body text

setlength{parskip}{0em}

linespread{1.09}



% HEADER AND FOOTER MANIPULATION

  % for normal pages

  nouppercaseheads

  headsep = 0.16in

  makepagestyle{mystyle} 

  setlength{headwidth}{dimexprtextwidth+marginparsep+marginparwidthrelax}

  makerunningwidth{mystyle}{headwidth}

  makeevenhead{mystyle}{}{textsf{scriptsizescshapethetitle}}{}

  makeoddhead{mystyle}{}{textsf{scriptsizescshapeleftmark}}{}

  makeevenfoot{mystyle}{}{textsf{scriptsizethepage}}{}

  makeoddfoot{mystyle}{}{textsf{scriptsizethepage}}{}

  makeatletter

  makepsmarks{mystyle}{%

  createmark{chapter}{left}{nonumber}{@chapapp }{. }}

  makeatother

  % for pages where chapters begin

  makepagestyle{plain}

  makerunningwidth{plain}{headwidth}

  makeevenfoot{plain}{}{}{}

  makeoddfoot{plain}{}{}{}

  pagestyle{mystyle}

% END HEADER AND FOOTER MANIPULATION



% table of contents customisation

renewcommandcontentsname{normalfontscshape Contents}

renewcommandcftchapterfont{normalfont}

renewcommand{cftchapterpagefont}{normalfont}

renewcommand{printtoctitle}{centeringHuge}







% layout check and fix

checkandfixthelayout

fixpdflayout



% BEGIN THE DOCUMENT

begin{document}

pagestyle{empty}

% the half title page

%halftitlepage

cleardoublepage

% the title page

titleM



% begin front matter

frontmatter

pagestyle{mystyle}



chapter{Introduction}



mainmatter

part{A part}



chapter{A chapter}



section{A section}

lipsum







end{document}

1. First of all I highly recommend to take into account @Zarko remarks as the problem you are facing is largely due to some incompatibilities between the memoir class and the titlesec package.



2. 
   

   The thetitle command defined by the memoir class is redifined by the titlesec package so we need to store its value before. So we define a new macro with edefTheTitle{thetitle} and use it to set the headers

   
   
   

   makeevenhead{mystyle}{}{textsf{scriptsizescshapeTheTitle}}{}
   
   makeoddhead{mystyle}{}{textsf{scriptsizescshapeleftmark}}{}
   
   

   
   



3. To number the subsections and see them in the toc:

%

 maxsecnumdepth{subsection}

 maxtocdepth{subsection}

The complete code

documentclass[smalldemyvopaper, 10pt, twoside, onecolumn, openright, extrafontsizes]{memoir}

usepackage[utf8]{inputenc}

usepackage [frenchb]{babel}

usepackage[T1]{fontenc}

usepackage[osf]{Alegreya,AlegreyaSans}



usepackage{lipsum}



% PACKAGE DEFINITION

% typographical packages

usepackage{microtype} % for micro-typographical adjustments

usepackage{setspace} % for line spacing

usepackage{lettrine} % for drop caps and awesome chapter beginnings

usepackage{titlesec} % for manipulation of chapter titles



% for placeholder text

usepackage{lipsum} % to generate Lorem Ipsum



% other

usepackage{calc}

usepackage{hologo}

usepackage[hidelinks]{hyperref}

%usepackage{showframe}

% PHYSICAL DOCUMENT SETUP

% media settings

setstocksize{8.5in}{5.675in}

settrimmedsize{8.5in}{5.5in}{*}

setbinding{0.175in}

setlrmarginsandblock{0.611in}{1.222in}{*}

setulmarginsandblock{0.722in}{1.545in}{*}



% defining the title and the author

%title{LaTeX{} ePub Template}

%title{textsc{How I Started to Love {fontfamily{cmr}selectfontLaTeX{}}}}

title{The book title}



author{My name}

newcommand{ISBN}{0-000-00000-2}

newcommand{press}{Nom de l'éditeur}



edefTheTitle{thetitle}



% custom second title page

makeatletter

newcommand*halftitlepage{begingroup % Misericords, T&H p 153

  setlengthdrop{0.1textheight}

  begin{center}

  vspace*{drop}

  rule{textwidth}{0in}par

  {Largetextscthetitlepar}

  rule{textwidth}{0in}par

  vfill

  end{center}

endgroup}

makeatother



% custom title page

thispagestyle{empty}

makeatletter

newlengthdrop

newcommand*titleM{begingroup % Misericords, T&H p 153

  setlengthdrop{0.15textheight}

  begin{center}

  vspace*{drop}

  rule{textwidth}{0in}par

  {HUGEtextscthetitlepar}

  rule{textwidth}{0in}par

  {Largetextittheauthorpar}

  vfill

  {Largescshapepress}

  end{center}

endgroup}

makeatother



% chapter title manipulation

% padding with zero

%renewcommand*thechapter{ifnumvalue{chapter}<10 0fiarabic{chapter}}

% chapter title display

titleformat

{chapter}

[display]

{normalfontscshapeLARGE}

{hugethechaptercentering}

{0pt}

{vspace{18pt}centering}[vspace{22pt}]



% typographical settings for the body text

setlength{parskip}{0em}

linespread{1.09}



% HEADER AND FOOTER MANIPULATION

  % for normal pages

  nouppercaseheads

  headsep = 0.16in

  makepagestyle{mystyle} 

  setlength{headwidth}{dimexprtextwidth+marginparsep+marginparwidthrelax}

  makerunningwidth{mystyle}{headwidth}

  makeevenhead{mystyle}{}{textsf{scriptsizescshapeTheTitle}}{}

  makeoddhead{mystyle}{}{textsf{scriptsizescshapeleftmark}}{}

  makeevenfoot{mystyle}{}{textsf{scriptsizethepage}}{}

  makeoddfoot{mystyle}{}{textsf{scriptsizethepage}}{}

  makeatletter

  makepsmarks{mystyle}{%

  createmark{chapter}{left}{nonumber}{@chapapp }{. }}

  makeatother

  % for pages where chapters begin

  makepagestyle{plain}

  makerunningwidth{plain}{headwidth}

  makeevenfoot{plain}{}{}{}

  makeoddfoot{plain}{}{}{}

  pagestyle{mystyle}

% END HEADER AND FOOTER MANIPULATION



% table of contents customisation

renewcommandcontentsname{normalfontscshape Contents}

renewcommandcftchapterfont{normalfont}

renewcommand{cftchapterpagefont}{normalfont}

renewcommand{printtoctitle}{centeringHuge}



% layout check and fix

checkandfixthelayout

fixpdflayout



% BEGIN THE DOCUMENT

begin{document}



pagestyle{empty}

% the half title page

%halftitlepage

cleardoublepage

% the title page

titleM



% begin front matter

frontmatter

pagestyle{mystyle}



maxtocdepth{subsection}

maxsecnumdepth{subsection}



tableofcontents



chapter{Introduction}



mainmatter

part{A part}



chapter{A chapter}



section{A section}



subsection{A subsection}



lipsum



end{document}