From fc51ff9e22a809e257ae92f12272f1dbcb31f594 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Thu, 22 Aug 2024 22:25:57 +0200
Subject: Add position type and query on it

---
 src/dates.rs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/dates.rs

(limited to 'src/dates.rs')

diff --git a/src/dates.rs b/src/dates.rs
new file mode 100644
index 0000000..87e6f5e
--- /dev/null
+++ b/src/dates.rs
@@ -0,0 +1,35 @@
+use async_graphql::{InputValueError, InputValueResult, Scalar, ScalarType, Value};
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct GraphQLDate(pub DateTime<Utc>);
+
+impl From<DateTime<Utc>> for GraphQLDate {
+    fn from(dt: DateTime<Utc>) -> Self {
+        GraphQLDate(dt)
+    }
+}
+
+impl From<GraphQLDate> for DateTime<Utc> {
+    fn from(my_dt: GraphQLDate) -> Self {
+        my_dt.0
+    }
+}
+
+#[Scalar]
+impl ScalarType for GraphQLDate {
+    fn parse(value: Value) -> InputValueResult<Self> {
+        if let Value::String(s) = &value {
+            DateTime::parse_from_rfc3339(s)
+                .map(|dt| GraphQLDate(dt.with_timezone(&Utc)))
+                .map_err(|e| InputValueError::custom(format!("Invalid DateTime: {}", e)))
+        } else {
+            Err(InputValueError::expected_type(value))
+        }
+    }
+
+    fn to_value(&self) -> Value {
+        Value::String(self.0.to_rfc3339())
+    }
+}
-- 
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