Helpers for working with weak password errors from GoTrue.

GoTrue returns structured weak password data in error responses:

%{
  "error_code" => "weak_password",
  "msg" => "Password too short",
  "weak_password" => %{"reasons" => ["length"]}
}

The default Supabase.HTTPErrorParser preserves this in metadata.resp_body, but it's not ergonomic to pattern-match on. This module enriches the error's metadata with a weak_password_reasons key for easy pattern matching:

{:error, %Supabase.Error{metadata: %{weak_password_reasons: [:length]}}}

Reasons

• :length — password is too short
• :characters — password lacks required character diversity
• :pwned — password was found in a known breach database

Examples

case Auth.sign_up(client, creds) do
  {:error, %Supabase.Error{metadata: %{weak_password_reasons: reasons}}} ->
    # handle weak password with reasons like [:length, :characters]

  {:error, %Supabase.Error{} = err} ->
    # handle other errors
end

Or using the helper functions:

case Auth.sign_up(client, creds) do
  {:error, err} when is_struct(err, Supabase.Error) ->
    if WeakPasswordError.weak_password?(err) do
      reasons = WeakPasswordError.reasons(err)
      # ...
    end
end