jrnl: markdown generation

programs/jrnl/src/md.rs

@@ -2,6 +2,10 @@ use chrono::{DateTime, FixedOffset};
 use markdown::{Block, Span};
 use std::convert::identity;
 
+pub trait ToMd {
+    fn to_md(&self) -> String;
+}
+
 #[derive(Debug)]
 pub struct Doc<'src> {
     pub entries: Vec<Entry<'src>>,
@@ -35,9 +39,26 @@ impl<'src> Doc<'src> {
     }
 }
 
+impl ToMd for Doc<'_> {
+    fn to_md(&self) -> String {
+        let mut r = "# Journal\n\n".to_owned();
+
+        self.entries.iter().fold(r, |mut r, it| r + &it.to_md())
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct Entry<'src> {
     pub timestamp: DateTime<FixedOffset>,
     pub title: &'src str,
     pub content: &'src str,
 }
+
+impl ToMd for Entry<'_> {
+    fn to_md(&self) -> String {
+        format!(
+            "## {}: {}\n\n{}\n\n",
+            self.timestamp, self.title, self.content
+        )
+    }
+}