From 1d80ab681eb967a5a3835f492161c39cfc8fb1b8 Mon Sep 17 00:00:00 2001
From: Joscha <joscha@plugh.de>
Date: Fri, 26 Nov 2021 00:53:27 +0100
Subject: [PATCH] Add eval representation of DateSpec

---
 src/eval.rs              | 22 ++------------
 src/eval/date_spec.rs    | 62 ++++++++++++++++++++++++++++++++++++++++
 src/eval/formula_spec.rs | 14 ++++++++-
 3 files changed, 77 insertions(+), 21 deletions(-)
 create mode 100644 src/eval/date_spec.rs

diff --git a/src/eval.rs b/src/eval.rs
index 8ad87fa..3186447 100644
--- a/src/eval.rs
+++ b/src/eval.rs
@@ -3,15 +3,14 @@ use std::result;
 
 use chrono::{Datelike, NaiveDate};
 
-use crate::files::commands::DateSpec;
 use crate::files::commands::{Birthday, Command, DoneDate, Note, Spec, Task};
 use crate::files::{Files, Source, SourcedCommand};
 
 use self::entry::EntryMap;
 pub use self::entry::{Entry, EntryKind};
-use self::formula_spec::FormulaSpec;
 pub use self::range::DateRange;
 
+mod date_spec;
 mod delta;
 mod entry;
 mod formula_spec;
@@ -31,23 +30,6 @@ struct Eval {
 }
 
 impl Eval {
-    fn eval_date_spec(
-        &mut self,
-        spec: &DateSpec,
-        last_done: Option<NaiveDate>,
-        new_entry: impl Fn(Source, Option<DoneDate>) -> Entry,
-    ) -> Result<()> {
-        todo!()
-    }
-
-    fn eval_formula_spec(
-        &mut self,
-        spec: FormulaSpec,
-        new_entry: impl Fn(Source, Option<DoneDate>) -> Entry,
-    ) -> Result<()> {
-        todo!()
-    }
-
     fn eval_spec(
         &mut self,
         spec: &Spec,
@@ -55,7 +37,7 @@ impl Eval {
         new_entry: impl Fn(Source, Option<DoneDate>) -> Entry,
     ) -> Result<()> {
         match spec {
-            Spec::Date(spec) => self.eval_date_spec(spec, last_done, new_entry),
+            Spec::Date(spec) => self.eval_date_spec(spec.into(), last_done, new_entry),
             Spec::Weekday(spec) => self.eval_formula_spec(spec.into(), new_entry),
             Spec::Formula(spec) => self.eval_formula_spec(spec.into(), new_entry),
         }
diff --git a/src/eval/date_spec.rs b/src/eval/date_spec.rs
new file mode 100644
index 0000000..db8871d
--- /dev/null
+++ b/src/eval/date_spec.rs
@@ -0,0 +1,62 @@
+use chrono::NaiveDate;
+
+use crate::files::commands::{self, DoneDate, Time};
+use crate::files::Source;
+
+use super::delta::{Delta, DeltaStep};
+use super::{Entry, Eval, Result};
+
+pub struct DateSpec {
+    pub start: NaiveDate,
+    pub start_delta: Delta,
+    pub start_time: Option<Time>,
+    pub end_delta: Delta,
+    pub repeat: Option<Delta>,
+    pub start_at_done: bool,
+}
+
+impl From<&commands::DateSpec> for DateSpec {
+    fn from(spec: &commands::DateSpec) -> Self {
+        let start_delta: Delta = spec
+            .start_delta
+            .as_ref()
+            .map(|delta| delta.into())
+            .unwrap_or_default();
+
+        let mut end_delta: Delta = spec
+            .end_delta
+            .as_ref()
+            .map(|delta| delta.into())
+            .unwrap_or_default();
+        if let Some(time) = spec.end_time {
+            end_delta.steps.push(DeltaStep::Time(time));
+        }
+
+        let repeat: Option<Delta> = spec.repeat.as_ref().map(|repeat| (&repeat.delta).into());
+        let start_at_done = spec
+            .repeat
+            .as_ref()
+            .map(|repeat| repeat.start_at_done)
+            .unwrap_or(false);
+
+        Self {
+            start: spec.start,
+            start_delta,
+            start_time: spec.start_time,
+            end_delta,
+            repeat,
+            start_at_done,
+        }
+    }
+}
+
+impl Eval {
+    pub fn eval_date_spec(
+        &mut self,
+        spec: DateSpec,
+        last_done: Option<NaiveDate>,
+        new_entry: impl Fn(Source, Option<DoneDate>) -> Entry,
+    ) -> Result<()> {
+        todo!()
+    }
+}
diff --git a/src/eval/formula_spec.rs b/src/eval/formula_spec.rs
index 569c513..3660a70 100644
--- a/src/eval/formula_spec.rs
+++ b/src/eval/formula_spec.rs
@@ -1,6 +1,8 @@
-use crate::files::commands::{self, Expr, Time, Var};
+use crate::files::commands::{self, DoneDate, Expr, Time, Var};
+use crate::files::Source;
 
 use super::delta::{Delta, DeltaStep};
+use super::{Entry, Eval, Result};
 
 pub struct FormulaSpec {
     // TODO Implement more efficient exprs and expr evaluation
@@ -66,3 +68,13 @@ impl From<&commands::WeekdaySpec> for FormulaSpec {
         }
     }
 }
+
+impl Eval {
+    pub fn eval_formula_spec(
+        &mut self,
+        spec: FormulaSpec,
+        new_entry: impl Fn(Source, Option<DoneDate>) -> Entry,
+    ) -> Result<()> {
+        todo!()
+    }
+}