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use bson::{oid::ObjectId, DateTime as UtcDateTime};
use chrono::prelude::*;
use crate::{
parser::{ParseError, ScalarToken, Token},
value::ParseScalarResult,
Value,
};
#[crate::graphql_scalar(description = "ObjectId")]
impl<S> GraphQLScalar for ObjectId
where
S: ScalarValue,
{
fn resolve(&self) -> Value {
Value::scalar(self.to_hex())
}
fn from_input_value(v: &InputValue) -> Option<ObjectId> {
v.as_string_value()
.and_then(|s| ObjectId::with_string(s).ok())
}
fn from_str<'a>(value: ScalarToken<'a>) -> ParseScalarResult<'a, S> {
if let ScalarToken::String(value) = value {
Ok(S::from(value.to_owned()))
} else {
Err(ParseError::UnexpectedToken(Token::Scalar(value)))
}
}
}
#[crate::graphql_scalar(description = "UtcDateTime")]
impl<S> GraphQLScalar for UtcDateTime
where
S: ScalarValue,
{
fn resolve(&self) -> Value {
Value::scalar((*self).to_rfc3339())
}
fn from_input_value(v: &InputValue) -> Option<UtcDateTime> {
v.as_string_value()
.and_then(|s| (s.parse::<DateTime<Utc>>().ok()))
.map(UtcDateTime)
}
fn from_str<'a>(value: ScalarToken<'a>) -> ParseScalarResult<'a, S> {
if let ScalarToken::String(value) = value {
Ok(S::from(value.to_owned()))
} else {
Err(ParseError::UnexpectedToken(Token::Scalar(value)))
}
}
}
#[cfg(test)]
mod test {
use crate::{value::DefaultScalarValue, InputValue};
use bson::{oid::ObjectId, DateTime as UtcDateTime};
use chrono::prelude::*;
#[test]
fn objectid_from_input_value() {
let raw = "53e37d08776f724e42000000";
let input: InputValue<DefaultScalarValue> = InputValue::scalar(raw.to_string());
let parsed: ObjectId = crate::FromInputValue::from_input_value(&input).unwrap();
let id = ObjectId::with_string(raw).unwrap();
assert_eq!(parsed, id);
}
#[test]
fn utcdatetime_from_input_value() {
let raw = "2020-03-23T17:38:32.446+00:00";
let input: InputValue<DefaultScalarValue> = InputValue::scalar(raw.to_string());
let parsed: UtcDateTime = crate::FromInputValue::from_input_value(&input).unwrap();
let date_time = UtcDateTime(
DateTime::parse_from_rfc3339(raw)
.unwrap()
.with_timezone(&Utc),
);
assert_eq!(parsed, date_time);
}
}