lib/fetchers: add Internet Archive fetcher

lib/default.nix

@@ -17,11 +17,13 @@ pkgs.lib.makeExtensible
     builders = callLib ./builders.nix;
     trivial = callLib ./trivial.nix;
     data = callLib ./data.nix;
+    fetchers = callLib ./fetchers;
 
     inherit (self.builders) makeXDGMimeAssociationList
       makeXDGPortalConfiguration makeXDGDesktopEntry;
     inherit (self.trivial) countAttrs;
     inherit (self.data) importYAML renderTeraTemplate;
+    inherit (self.fetchers) fetchInternetArchive;
   } // lib.optionalAttrs (builtins ? fetchTree) {
     flake = callLib ./flake.nix;
 

lib/fetchers/default.nix

@@ -0,0 +1,5 @@
+{ pkgs, lib, self }:
+
+{
+  fetchInternetArchive = pkgs.callPackage ./fetch-internet-archive { };
+}

lib/fetchers/fetch-internet-archive/default.nix

@@ -0,0 +1,27 @@
+{ stdenvNoCC, lib, fetchzip, fetchurl, curl }:
+
+{
+  id,
+  file ? "",
+  formats ? [ ],
+  hash ? "",
+  name ? "internet-archive-${id}",
+}@args:
+
+let
+  isFormatIndiciated = formats != [ ];
+  url =
+    if isFormatIndiciated
+    then "https://archive.org/compress/${lib.escapeURL id}/formats=${lib.concatStringsSep "," formats}"
+    else "https://archive.org/download/${lib.escapeURL id}/${lib.escapeURL file}";
+
+    args' = lib.removeAttrs args [ "id" "file" "formats" ] // {
+      inherit url hash name;
+    } // lib.optionalAttrs isFormatIndiciated { inherit hash; };
+
+  fetcher =
+    if isFormatIndiciated
+    then fetchzip
+    else fetchurl;
+in
+  fetcher args'

tests/lib/fetchers.nix

@@ -0,0 +1,21 @@
+{
+  pkgs ? import <nixpkgs> { },
+  lib ? pkgs.lib,
+  self ? import ../../lib { inherit pkgs; },
+}:
+
+{
+  testsInternetArchiveFetcher =
+    self.fetchers.fetchInternetArchive {
+      id = "md_music_sonic_the_hedgehog";
+      file = "01 - Title Theme - Masato Nakamura.flac";
+      hash = "sha256-kGjsVjtjXK9imqyi4GF6qkFVmobiTAe/ZAeEwiouqS4=";
+    };
+
+  testsInternetArchiveFetcher2 =
+    self.fetchers.fetchInternetArchive {
+      id = "md_music_sonic_the_hedgehog";
+      formats = [ "TEXT" "PNG" ];
+      hash = "sha256-xbhasJ/wEgcY+EcBAJp5UoYB4N4It3QV/iIeGGdCET8=";
+    };
+}