From aad33fee01abe817d82c094f83ffd44ca36c8456 Mon Sep 17 00:00:00 2001
From: "Adam T. Carpenter" <atc@53hor.net>
Date: Sat, 14 Sep 2024 21:11:51 -0400
Subject: feat: reverse sort posts by modify datetime

---
 src/posts/abstractions/post.rs |  2 +-
 src/posts/fs_post.rs           | 25 ++++++++++++++++++++++++-
 src/views/posts.rs             |  7 ++++---
 3 files changed, 29 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/posts/abstractions/post.rs b/src/posts/abstractions/post.rs
index 6d504db..a941281 100644
--- a/src/posts/abstractions/post.rs
+++ b/src/posts/abstractions/post.rs
@@ -1,6 +1,6 @@
 use std::{borrow::Cow, fmt};
 
-pub trait Post: fmt::Debug {
+pub trait Post: fmt::Debug + Ord {
     fn get_title(&self) -> &str;
     fn get_article(&self) -> Cow<str>;
 }
diff --git a/src/posts/fs_post.rs b/src/posts/fs_post.rs
index f83ff4a..8b8e725 100644
--- a/src/posts/fs_post.rs
+++ b/src/posts/fs_post.rs
@@ -1,7 +1,7 @@
 use crate::posts::abstractions::post::Post;
 use std::{borrow::Cow, fs, path::PathBuf};
 
-#[derive(Debug)]
+#[derive(Debug, Eq)]
 pub struct FsPost {
     file: PathBuf,
 }
@@ -22,3 +22,26 @@ impl Post for FsPost {
         Cow::Owned(article)
     }
 }
+
+impl Ord for FsPost {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.file
+            .metadata()
+            .unwrap()
+            .modified()
+            .unwrap()
+            .cmp(&other.file.metadata().unwrap().modified().unwrap())
+    }
+}
+
+impl PartialOrd for FsPost {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl PartialEq for FsPost {
+    fn eq(&self, other: &Self) -> bool {
+        self.get_title() == other.get_title()
+    }
+}
diff --git a/src/views/posts.rs b/src/views/posts.rs
index 2ce69f8..82b5996 100644
--- a/src/views/posts.rs
+++ b/src/views/posts.rs
@@ -10,8 +10,9 @@ pub struct PostsView<P: Post> {
 
 impl<P: Post> PostsView<P> {
     pub fn with_posts(posts: impl IntoIterator<Item = P>) -> Self {
-        Self {
-            posts: posts.into_iter().collect(),
-        }
+        let mut posts: Vec<P> = posts.into_iter().collect();
+        posts.sort();
+        posts.reverse();
+        Self { posts }
     }
 }
-- 
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