Date utility commands (#2780)

* updated & added date related commands based on the new design

* added proper error handling when date format string is invalid

* fixed format issue

* fixed an issue caused due to the change in primitive Date type

* added `date list-timezone` command to list all supported time zones and updated `date to-timezone` accordingly

crates/nu-data/src/base.rs

@@ -1,7 +1,7 @@
 pub(crate) mod shape;
 
 use bigdecimal::BigDecimal;
-use chrono::{DateTime, Utc};
+use chrono::{DateTime, FixedOffset, Utc};
 use derive_new::new;
 use nu_errors::ShellError;
 use nu_protocol::{
@@ -75,8 +75,8 @@ pub enum CompareValues {
     Ints(BigInt, BigInt),
     Decimals(BigDecimal, BigDecimal),
     String(String, String),
-    Date(DateTime<Utc>, DateTime<Utc>),
-    DateDuration(DateTime<Utc>, BigInt),
+    Date(DateTime<FixedOffset>, DateTime<FixedOffset>),
+    DateDuration(DateTime<FixedOffset>, BigInt),
     Booleans(bool, bool),
 }
 
@@ -94,9 +94,10 @@ impl CompareValues {
                     Span::unknown(),
                 )
                 .expect("Could not convert nushell Duration into chrono Duration.");
-                let right: DateTime<Utc> = Utc::now()
+                let right: DateTime<FixedOffset> = Utc::now()
                     .checked_sub_signed(duration)
-                    .expect("Data overflow");
+                    .expect("Data overflow")
+                    .into();
                 right.cmp(left)
             }
             CompareValues::Booleans(left, right) => left.cmp(right),

crates/nu-data/src/base/shape.rs

@@ -1,6 +1,6 @@
 // use crate::config::{Conf, NuConfig};
 use bigdecimal::BigDecimal;
-use chrono::{DateTime, Utc};
+use chrono::{DateTime, FixedOffset};
 use indexmap::map::IndexMap;
 use nu_protocol::RangeInclusion;
 use nu_protocol::{format_primitive, ColumnPath, Dictionary, Primitive, UntaggedValue, Value};
@@ -31,7 +31,7 @@ pub enum InlineShape {
     ColumnPath(ColumnPath),
     Pattern(String),
     Boolean(bool),
-    Date(DateTime<Utc>),
+    Date(DateTime<FixedOffset>),
     Duration(BigInt),
     Path(PathBuf),
     Binary(usize),

crates/nu-data/src/value.rs

@@ -25,7 +25,7 @@ impl Date {
 
         let date = date.with_timezone(&chrono::offset::Utc);
 
-        Ok(UntaggedValue::Primitive(Primitive::Date(date)))
+        Ok(UntaggedValue::Primitive(Primitive::Date(date.into())))
     }
 
     pub fn naive_from_str(s: Tagged<&str>) -> Result<UntaggedValue, ShellError> {
@@ -38,7 +38,7 @@ impl Date {
         })?;
 
         Ok(UntaggedValue::Primitive(Primitive::Date(
-            DateTime::<Utc>::from_utc(date.and_hms(12, 34, 56), Utc),
+            DateTime::<Utc>::from_utc(date.and_hms(12, 34, 56), Utc).into(),
         )))
     }
 }