use std::fmt;
use serde::{de, Deserialize, ser, Serialize};
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum LevelOfCareCode {
Code1,
Code2,
Code3,
Code4,
Code5,
Code6,
Code7,
Hospice,
}
impl LevelOfCareCode {
pub fn code(&self) -> &str {
{
use LevelOfCareCode::*;
match self {
Code1 => "1",
Code2 => "2",
Code3 => "3",
Code4 => "4",
Code5 => "5",
Code6 => "6",
Code7 => "7",
Hospice => "8",
}
}
}
pub fn from_code(code: &[u8]) -> Option<LevelOfCareCode> {
use LevelOfCareCode::*;
match code {
b"1" => Some(Code1),
b"2" => Some(Code2),
b"3" => Some(Code3),
b"4" => Some(Code4),
b"5" => Some(Code5),
b"6" => Some(Code6),
b"7" => Some(Code7),
b"8" => Some(Hospice),
_ => None,
}
}
fn description(&self) -> &str {
use LevelOfCareCode::*;
match self {
Code1 => "Skilled Nursing Facility (SNF)",
Code2 => "Intermediate Care Facility (ICF)",
Code3 => "Intermediate Care Facility - Mentally Retarded (ICF-MR)",
Code4 => "Chronic Disease Hospital (CD)",
Code5 => "Intermediate Care Facility (ICF) Level II",
Code6 => "Special Skilled Nursing Facility (SNF)",
Code7 => "Nursing Facility (NF)",
Hospice => "Hospice",
}
}
fn from_description(description: &str) -> Option<LevelOfCareCode> {
{
use LevelOfCareCode::*;
match description {
"Skilled Nursing Facility (SNF)" => Some(Code1),
"Intermediate Care Facility (ICF)" => Some(Code2),
"Intermediate Care Facility - Mentally Retarded (ICF-MR)" => Some(Code3),
"Chronic Disease Hospital (CD)" => Some(Code4),
"Intermediate Care Facility (ICF) Level II" => Some(Code5),
"Special Skilled Nursing Facility (SNF)" => Some(Code6),
"Nursing Facility (NF)" => Some(Code7),
"Hospice" => Some(Hospice),
_ => None,
}
}
}
}
impl Serialize for LevelOfCareCode {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: ser::Serializer,
{
let value = if serializer.is_human_readable() {
self.description()
} else {
self.code()
};
serializer.serialize_str(value)
}
}
struct Visitor;
impl<'de> de::Visitor<'de> for Visitor {
type Value = LevelOfCareCode;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("Level of Care Code")
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: de::Error,
{
LevelOfCareCode::from_description(v)
.ok_or_else(|| E::custom(format!("Invalid Level of Care Code: {}", v)))
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: de::Error,
{
LevelOfCareCode::from_code(v)
.ok_or_else(|| E::custom(
format!(
"Invalid Level of Care Code: {}", std::str::from_utf8(v).unwrap()
),
))
}
}
impl<'de> Deserialize<'de> for LevelOfCareCode {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: de::Deserializer<'de>,
{
if deserializer.is_human_readable() {
deserializer.deserialize_str(Visitor)
} else {
deserializer.deserialize_bytes(Visitor)
}
}
}