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error.ex
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error.ex
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defmodule OpenApiSpex.Cast.Error do
alias OpenApiSpex.TermType
defstruct reason: nil,
value: nil,
format: nil,
type: nil,
name: nil,
path: [],
length: 0
def new(ctx, {:null_value}) do
type = ctx.schema && ctx.schema.type
%__MODULE__{reason: :null_value, type: type}
|> add_context_fields(ctx)
end
def new(ctx, {:min_length, length}) do
%__MODULE__{reason: :min_length, length: length}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_type, type}) do
%__MODULE__{reason: :invalid_type, type: type}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_format, format}) do
%__MODULE__{reason: :invalid_format, format: format}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_enum}) do
%__MODULE__{reason: :invalid_enum}
|> add_context_fields(ctx)
end
def new(ctx, {:unexpected_field, name}) do
%__MODULE__{reason: :unexpected_field, name: name}
|> add_context_fields(ctx)
end
def new(ctx, {:missing_field, name}) do
%__MODULE__{reason: :missing_field, name: name}
|> add_context_fields(ctx)
end
def message(%{reason: :null_value} = error) do
case error.type do
nil -> "null value"
type -> "null value where #{type} expected"
end
end
def message(%{reason: :min_length, length: length}) do
"String length is smaller than minLength: #{length}"
end
def message(%{reason: :invalid_type, type: type, value: value}) do
"Invalid #{type}. Got: #{TermType.type(value)}"
end
def message(%{reason: :invalid_format, format: format}) do
"Invalid format. Expected #{inspect(format)}"
end
def message(%{reason: :invalid_enum}) do
"Invalid value for enum"
end
def message(%{reason: :polymorphic_failed, type: polymorphic_type}) do
"Failed to cast to any schema in #{polymorphic_type}"
end
def message(%{reason: :unexpected_field, name: name}) do
"Unexpected field: #{safe_string(name)}"
end
def message(%{reason: :no_value_required_for_discriminator, name: field}) do
"No value for required disciminator property: #{field}"
end
def message(%{reason: :unknown_schema, name: name}) do
"Unknown schema: #{name}"
end
def message(%{reason: :missing_field, name: name}) do
"Missing field: #{name}"
end
def message_with_path(error) do
prepend_path(error, message(error))
end
def path_to_string(%{path: path} = _error) do
"/" <> (path |> Enum.map(&to_string/1) |> Path.join())
end
defp add_context_fields(error, ctx) do
%{error | path: Enum.reverse(ctx.path), value: ctx.value}
end
defp prepend_path(error, message) do
path =
case error.path do
[] -> "#"
_ -> "#" <> path_to_string(error)
end
path <> ": " <> message
end
defp safe_string(string) do
to_string(string) |> String.slice(0..39)
end
end
defimpl String.Chars, for: OpenApiSpex.Cast.Error do
def to_string(error) do
OpenApiSpex.Cast.Error.message(error)
end
end

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