Source file field.ml

(*****************************************************************************)
(*                                                                           *)
(*  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/.                 *)
(*                                                                           *)
(*****************************************************************************)

let sformat regex insensible key value =
  let key = match insensible with true -> key | false -> "%" ^ key in
  let colon = match regex with true -> "::" | false -> ":" in
  Printf.sprintf "%s%s%s" key colon value

let format = Printf.sprintf "%s:%s"

module String = struct
  type field =
    | Title of string
    | SortName of string
    | Artist of string
    | Album of string
    | AlbumArtist of string
    | Composer of string
    | Genre of string
    | Path of string
    | FileExtension of string

  type t = { regex : bool; insensible : bool; field : field }

  let title regex insensible s = { regex; insensible; field = Title s }
  let sort_name regex insensible s = { regex; insensible; field = SortName s }
  let artist regex insensible s = { regex; insensible; field = Artist s }
  let album regex insensible s = { regex; insensible; field = Album s }

  let album_artist regex insensible s =
    { regex; insensible; field = AlbumArtist s }

  let composer regex insensible s = { regex; insensible; field = Composer s }
  let genre regex insensible s = { regex; insensible; field = Genre s }
  let path regex insensible s = { regex; insensible; field = Path s }

  let extension regex insensible s =
    { regex; insensible; field = FileExtension s }

  let to_string s =
    let { regex; insensible; field } = s in
    let key, value =
      match field with
      | Title s ->
          (Keys.title, s)
      | SortName s ->
          (Keys.sort_name, s)
      | Artist s ->
          (Keys.artist, s)
      | Album s ->
          (Keys.album, s)
      | AlbumArtist s ->
          (Keys.album_artist, s)
      | Composer s ->
          (Keys.composer, s)
      | Genre s ->
          (Keys.genre, s)
      | Path s ->
          (Keys.path, s)
      | FileExtension s ->
          (Keys.extension, s)
    in
    sformat regex insensible key value

  let to_sexp s =
    let { regex; insensible; field } = s in
    let key, value =
      match field with
      | Title s ->
          (Keys.title, s)
      | SortName s ->
          (Keys.sort_name, s)
      | Artist s ->
          (Keys.artist, s)
      | Album s ->
          (Keys.album, s)
      | AlbumArtist s ->
          (Keys.album_artist, s)
      | Composer s ->
          (Keys.composer, s)
      | Genre s ->
          (Keys.genre, s)
      | Path s ->
          (Keys.path, s)
      | FileExtension s ->
          (Keys.extension, s)
    in
    sformat regex insensible key (Util.quote value)

  let regex s = s.regex
  let insensible s = s.insensible
  let field s = s.field
end

module Bool = struct
  type t = Art of bool | Flag of bool

  let art b = Art b
  let flag b = Flag b

  let to_string s =
    let key, value =
      match s with Art b -> (Keys.art, b) | Flag b -> (Keys.flag, b)
    in
    format key (Bool.to_string value)

  let to_sexp = to_string
end

module Int = struct
  type t =
    | Id of int64 Range.t
    | Size of int64 Range.t
    | Track of int Range.t
    | Year of int Range.t
    | Disc of int Range.t
    | Plays of int Range.t
    | Length of int Range.t (* in secondes *)
    | Rating of int Range.t
    | AlbumCount of int Range.t

  let id r = Id r
  let size r = Size r
  let track r = Track r
  let year r = Year r
  let disc r = Disc r
  let plays r = Plays r
  let length r = Length r
  let rating r = Rating r
  let album_count r = AlbumCount r

  let to_string = function
    | Id r ->
        format Keys.id (Range.to_string Int64.to_string r)
    | Size r ->
        format Keys.size (Range.to_string Int64.to_string r)
    | Track r ->
        format Keys.track (Range.to_string Int.to_string r)
    | Year r ->
        format Keys.year (Range.to_string Int.to_string r)
    | Disc r ->
        format Keys.disc (Range.to_string Int.to_string r)
    | Plays r ->
        format Keys.plays (Range.to_string Int.to_string r)
    | Length r ->
        format Keys.length (Range.to_string Int.to_string r)
    | Rating r ->
        format Keys.rating (Range.to_string Int.to_string r)
    | AlbumCount r ->
        format Keys.album_count (Range.to_string Int.to_string r)

  let to_sexp = to_string
end

module Float = struct
  type t =
    | AvgDuration of float Range.t
    | AvgRating of float Range.t
    | AvgSize of float Range.t

  let avg_duration r = AvgDuration r
  let avg_rating r = AvgRating r
  let avg_size r = AvgSize r

  let to_string f =
    let variable, range =
      match f with
      | AvgDuration f ->
          (Keys.avg_duration, f)
      | AvgRating f ->
          (Keys.avg_rating, f)
      | AvgSize f ->
          (Keys.avg_size, f)
    in
    format variable (Range.to_string Float.to_string range)

  let to_sexp = to_string
end

type t =
  | FString of String.t
  | FBool of Bool.t
  | FInt of Int.t
  | FFloat of Float.t

let string s = FString s
let bool b = FBool b
let int i = FInt i
let float f = FFloat f

(* String *)
let title regex insensible s = string (String.title regex insensible s)
let sort_name regex insensible s = string (String.sort_name regex insensible s)
let artist regex insensible s = string (String.artist regex insensible s)
let album regex insensible s = string (String.album regex insensible s)

let album_artist regex insensible s =
  string (String.album_artist regex insensible s)

let composer regex insensible s = string (String.composer regex insensible s)
let genre regex insensible s = string (String.genre regex insensible s)
let path regex insensible s = string (String.path regex insensible s)
let extension regex insensible s = string (String.extension regex insensible s)

(* Bool *)
let art r = bool (Bool.art r)
let flag r = bool (Bool.flag r)

(* Int *)
let id i = int (Int.id i)
let track r = int (Int.track r)
let year r = int (Int.year r)
let disc r = int (Int.disc r)
let length r = int (Int.length r)
let plays r = int (Int.plays r)
let size r = int (Int.size r)
let rating r = int (Int.rating r)
let album_count r = int (Int.album_count r)

(* Float *)
let avg_duration r = float (Float.avg_duration r)
let avg_rating r = float (Float.avg_rating r)
let avg_size r = float (Float.avg_size r)

let to_string = function
  | FString s ->
      String.to_string s
  | FBool b ->
      Bool.to_string b
  | FInt i ->
      Int.to_string i
  | FFloat f ->
      Float.to_string f

let to_sexp = function
  | FString s ->
      String.to_sexp s
  | FBool b ->
      Bool.to_string b
  | FInt i ->
      Int.to_string i
  | FFloat f ->
      Float.to_string f

let is_string = function
  | FString _ ->
      true
  | FBool _ | FInt _ | FFloat _ ->
      false