Source file role.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/.                 *)
(*                                                                           *)
(*****************************************************************************)

type t = Unknown | Artist | AlbumArtist | Composer [@@deriving yojson]

let compare = Stdlib.compare
let equal = ( = )

let to_string = function
  | Unknown ->
      "unknwon"
  | Artist ->
      "artist"
  | AlbumArtist ->
      "albumartist"
  | Composer ->
      "composer"

let to_int = function
  | Unknown ->
      0
  | Artist ->
      1
  | AlbumArtist ->
      2
  | Composer ->
      3

let of_int = function
  | 1 ->
      Artist
  | 2 ->
      AlbumArtist
  | 3 ->
      Composer
  | 0 | _ ->
      Unknown

let roles = [ Unknown; Artist; AlbumArtist; Composer ]

let choices =
  List.map
    (fun c ->
      let s = to_string c in
      (s, c)
    )
    roles