Source file default.ml

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(*                                                                           *)
(*  Copyright (C) 2026 Yves Ndiaye                                           *)
(*                                                                           *)
(* This Source Code Form is subject to the terms of the Mozilla Public       *)
(* License, v. 2.0. If a copy of the MPL was not distributed with this       *)
(* file, You can obtain one at https://mozilla.org/MPL/2.0/.                 *)
(*                                                                           *)
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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