% Kale Ewasiuk (kalekje@gmail.com)
% 2022-10-24
% Copyright (C) 2021-2022 Kale Ewasiuk
%
% Permission is hereby granted, free of charge, to any person obtaining a copy
% of this software and associated documentation files (the "Software"), to deal
% in the Software without restriction, including without limitation the rights
% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
% copies of the Software, and to permit persons to whom the Software is
% furnished to do so, subject to the following conditions:
%
% The above copyright notice and this permission notice shall be included in
% all copies or substantial portions of the Software.
%
% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
% ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
% TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
% PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT
% SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
% ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
% ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
% OR OTHER DEALINGS IN THE SOFTWARE.

\ProvidesPackage{penlight}[2022-10-24]

\RequirePackage{luacode}

\IfFileExists{luakeys.lua}{}{\PackageError{penlight}{This package requires that luakeys be installed}{}}


\DeclareOption{pl}{\luadirect{
    pl = require'penlight'
    __PENLIGHT__ = 'pl'
}}
\DeclareOption{penlight}{\luadirect{
    penlight = require'penlight'
   __PENLIGHT__ = 'penlight'
}}


\DeclareOption{stringx}{\luadirect{_G[__PENLIGHT__].stringx.import()}}
\DeclareOption{format}{\luadirect{_G[__PENLIGHT__].stringx.format_operator()}}
\DeclareOption{func}{\luadirect{_G[__PENLIGHT__].utils.import(__PENLIGHT__..'.func')}}
\DeclareOption{extras}{\luadirect{require'penlightextras'}}
\DeclareOption{extrasglobals}{\luadirect{
    __PL_GLOBALS__ = true
    require'penlightextras'
}}

\ProcessOptions*\relax

\luadirect{
if __PENLIGHT__ == nil then
    tex.sprint('\\PackageError{penlight}{"penlight" or "pl" option must be passed to penlight as the first option}{}')
end
}



\newcommand{\writePDFmetadata}{\luadirect{_G[__PENLIGHT__].tex.writePDFmetadata()}}

\NewDocumentCommand{\writePDFmetadatakv}{ s m }{
\IfBooleanTF{#1}{% if *, overwrite everything
  \luadirect{
    __PDFmetadata__ = luakeys.parse(\luastring{#2})
      _G[__PENLIGHT__].tex.writePDFmetadata()
  }}{
    \luadirect{
    __PDFmetadata__ = __PDFmetadata__ or {}
    _G[__PENLIGHT__].tablex.update(__PDFmetadata__, luakeys.parse(\luastring{#2}))
    _G[__PENLIGHT__].tex.writePDFmetadata()
  }}
}


\def\luastringT#1{\luastring{\unexpanded\expandafter\expandafter\expandafter{#1}}}  % expand luastring twice
\let\luastringF\luastring  % fully expanded luastring

% allow control over expansion of arguments to a latex function
\NewDocumentCommand{\MakeluastringCommands}{O{} m }{% #1 the desired commands #2 defaults
  \luadirect{_G[__PENLIGHT__].tex.aliasluastring(\luastring{#2},\luastring{#1})}%
}

\NewDocumentCommand{\splitToComma}{ O{nn} m m }{%
  \MakeluastringCommands[nn]{#1}%
  \luadirect{_G[__PENLIGHT__].tex.split2comma(\plluastringA{#2},\plluastringB{#3})}%
}

\NewDocumentCommand{\splitToItems}{ O{NN} m m }{%
  \MakeluastringCommands[nn]{#1}%
  \luadirect{_G[__PENLIGHT__].tex.split2items(\plluastringA{#2},\plluastringB{#3})}%
}