require 'io'

local timesheet_export = nil
local timesheet_content = ""

local function Meta(meta)
  timesheet_export = pandoc.utils.stringify(meta['timesheet'])

  return nil
end

local function save_timesheet(content)
  timesheet_content = timesheet_content .. content 
end

local function CodeBlock(elem)
  for k,v in ipairs(elem.classes) do
    if v == 'timesheet' then
      save_timesheet(elem.text)
    end
  end

  -- do not modify elem
  return nil
end

local function save()
  file = io.open(timesheet_export, 'w+')
  file:write(timesheet_content)
  file:close()
end

local function Pandoc(pandoc)
  save()
  return nil
end


return {
  { Meta = Meta },
  { CodeBlock = CodeBlock },
  { Pandoc = Pandoc }
}