Source file default.ml

(**********************************************************************************************)
(*                                                                                            *)
(* This file is part of shakuhachi: a music collection manager                                *)
(* Copyright (C) 2025 Yves Ndiaye                                                             *)
(*                                                                                            *)
(* shakuhachi is free software: you can redistribute it and/or modify it under the terms      *)
(* of the GNU General Public License as published by the Free Software Foundation,            *)
(* either version 3 of the License, or (at your option) any later version.                    *)
(*                                                                                            *)
(* shakuhachi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;    *)
(* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR           *)
(* PURPOSE.  See the GNU General Public License for more details.                             *)
(* You should have received a copy of the GNU General Public License along with shakuhachi.   *)
(* If not, see <http://www.gnu.org/licenses/>.                                                *)
(*                                                                                            *)
(**********************************************************************************************)

module Keys = struct
  let artist = "artist"
  let album = "album"
  let title = "title"
end

type t = { artist : string; album : string; title : string }

let section = "default"
let init ~artist ~album ~title = { artist; album; title }
let missing_artist = "__unknwon-artist__"
let missing_album = "__unknown-album__"
let missing_title = "__NO_TITLE__"

let default =
  init ~artist:missing_artist ~album:missing_album ~title:missing_title

let conv ~default key section =
  match Section.assoc key section with Some e -> e | None -> default

let of_section section =
  let artist = conv ~default:missing_artist Keys.artist section in
  let album = conv ~default:missing_album Keys.album section in
  let title = conv ~default:missing_title Keys.title section in
  { artist; album; title }

let to_section t =
  let { artist; album; title } = t in
  Section.init section
    [ (Keys.artist, artist); (Keys.album, album); (Keys.title, title) ]

let title t = t.title
let album t = t.album
let artist t = t.title