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normalise FENs - trim and fuill move to 1 on addition

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owenrees
2026-08-11 22:04:47 +02:00
parent fd0f96cd92
commit ec581b24e7
5 changed files with 123 additions and 5 deletions
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lib/chesstrainer/endgames/endgame.ex
+9 -1
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@@ -30,7 +30,7 @@ defmodule Chesstrainer.Endgames.Endgame do
@doc false
def changeset(endgame, attrs) do
endgame
|> cast(attrs, [:fen, :key, :message, :notes, :result, :rating, :color])
|> cast(normalize_attrs(attrs), [:fen, :key, :message, :notes, :result, :rating, :color])
|> validate_required([:fen, :color], message: "Invalid FEN")
|> validate_required([:key, :result, :rating])
|> validate_format(:key, ~r/^(?=.{5,10}$)KQ*R*[NB]*P*\sv\sKQ*R*[NB]*P*$/,
@@ -45,6 +45,14 @@ defmodule Chesstrainer.Endgames.Endgame do
|> unique_constraint(:fen, message: "FEN already exists")
end
defp normalize_attrs(%{"fen" => fen} = attrs) when is_binary(fen),
do: Map.put(attrs, "fen", Chesstrainer.FEN.normalize(fen))
defp normalize_attrs(%{fen: fen} = attrs) when is_binary(fen),
do: Map.put(attrs, :fen, Chesstrainer.FEN.normalize(fen))
defp normalize_attrs(attrs), do: attrs
# Strict structural validation. Mirrors chess.js rules so the FEN survives
# both the server-side parser (Chex, permissive) and the client-side parser
# (chess.js, strict).