Module:Self

This module implements the {{Self}} template and should not be used directly in the content namespace.

Usage

{{#invoke:Self|main}}

---

local p = {}

function p.decide_migration(args)
  if args['migration'] then
    return args['migration']
  end
  local licsense_migration_data = mw.loadJsonData('Module:Self/license_migration_data.json')
  for _, template_name in ipairs(args) do
    local migration_data = licsense_migration_data[string.lower(template_name)]
    if migration_data == 'redundant' then
      return migration_data
    end
  end
  return ''
end

function p.setup_template_params(template_name, frame, args, migration)
  local title = mw.title.new(template_name, 10)
  if not title.exists then
    return {
      txt = '',
      errors = ('<span class="error scribunto-error">The license "' .. template_name ..  '" does not exist.</span>' ..
          '[[Category:Wikipedia dual licensed files with invalid licenses]]')
    }
  end

  return {
    txt = (frame:expandTemplate({
      title = template_name,
      args = {
        dw = (args['dw'] or 'no'),
        date = (args['date']  or ''),
        migration = (migration)
      }
    })),
    errors = ''
  }
end

function p.more_than_one(args)
  local c = 0
  for _, __ in ipairs(args) do
    c = c + 1
    if c == 2 then
      return true
    end
  end
  return false
end

function p.start_line(args)
  local more_than_one = p.more_than_one(args)
  return mw.ustring.format(
    '\'\'\'\'\'%s, the copyright holder of this work,\'\'\' hereby publish%s it under the following license%s:\'\'',
    args['author'] or 'I',
    args['author'] and 'es' or '',
    more_than_one and 's' or ''
  )
end

function p.categories(args)
  local currentTitle = mw.title.getCurrentTitle()
  local is_in_file_namespace = currentTitle.nsText == 'File'
  if not is_in_file_namespace then
    return ''
  end

  if args['author'] then
    return mw.ustring.format('[[Category:Files licensed by third parties|%s]]', currentTitle.fullText)
  else
    return mw.ustring.format('[[Category:Self-published works|%s]]', currentTitle.fullText)
  end
end

function p.main(frame)
  local args = frame:getParent().args
  local tstyles = frame:extensionTag(
    'templatestyles',
    '',
    {
      src = 'Module:Self/styles.css'
    }
  )
  local fmt_string_tmpl = '<div class="wp-tmpl-self-license-wrapper">' ..
    '<div class="center">%s</div><div class="center">%s</div>%s</div>%s'
  local initial_text = p.start_line(args)
  local final_line = p.more_than_one(args) and '<div class="center">' ..
      '<span style="font-style: italic;">You may select the license of your choice.</span>' ..
      '</div>' or ''
  local categories = p.categories(args)
  local templates = ''
  local errors = ''
  local migration = p.decide_migration(args)
  for _, template_name in ipairs(args) do
    tmpl_with_args = p.setup_template_params(template_name, frame, args, migration)
    templates = templates .. tmpl_with_args.txt
    errors = errors .. tmpl_with_args.errors
  end
  return tstyles .. mw.ustring.format(fmt_string_tmpl, initial_text, templates, final_line, categories) .. errors
end

return p