# ports.ludic - what the languages ask the game: where a player's own .po files are, a code that
# overrides the choice (a test in a language), and the overlay's font atlas, which is the game's
export port I18nWorld {
  mod_dir: fn() -> string = fn i18n__no_dir                 # "" is no mod folder
  forced: fn() -> string = fn i18n__no_code                 # "" is the code asked for
  font_ready: fn() -> bool = fn i18n__no                    # is there an overlay to load a font into
  set_font: fn(string) -> bool = fn i18n__no_font           # load this atlas directory; false if it could not
}

function i18n__no_dir() -> string { return "" }
function i18n__no_code() -> string { return "" }
function i18n__no() -> bool { return false }
function i18n__no_font(dir: string) -> bool { return false }

export state I18nState {
  lang_dir: string = "assets/lang"
  font_default: string = "assets/kit/font"
  on: bool = false                    # a language other than English is drawing
  cur: string = "en"
  codes: []string = null              # every language found, "en" first
  names: []string = null
  paths: []string = null
  fonts: []string = null              # a font atlas directory, "" for the game's own
  font_now: string = ""
  exact: Dict = null                  # msgid -> index into out
  out: []string = null
  plural: Dict = null                 # a plural msgid (the singular) -> index into forms / 3
  forms: []string = null              # three forms per entry, "" where the file has fewer
  plural_rule: int = 0                # PL_*
  tabs: []I18nTables = null           # by language: its lookups once read, kept for the next switch
  base_exact: Dict = null             # en.po, under every language: a key -> index into base_out
  base_out: []string = null
  base_plural: Dict = null            # a plural key -> index into base_forms / 3
  base_forms: []string = null
  base_rule: int = 0
  base_tried: bool = false
  kc: Dict = null                     # a marked string (key and args) -> index into kc_out, in this language
  kc_out: []string = null
  loud: bool = false                  # a developer's build: a key en.po lacks draws as [[key]], said once
  said: Dict = null
}

# where the shipped languages are (a directory with languages.txt and <code>.po), and the atlas a
# language with no X-Font draws in
export function i18n_config(i18n_st: mut I18nState, dir: string, default_font: string) -> void {
  i18n_st.lang_dir = dir
  i18n_st.font_default = default_font
  i18n_st.codes = null
}