From 5f2a48905634e7874946425057dc904dcb6c7d16 Mon Sep 17 00:00:00 2001
From: cel 🌸 <cel@blos.sm>
Date: Wed, 21 Jun 2023 23:46:20 +0100
Subject: implement blog

---
 src/posts/mod.rs | 73 ++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 61 insertions(+), 12 deletions(-)

(limited to 'src/posts/mod.rs')

diff --git a/src/posts/mod.rs b/src/posts/mod.rs
index b188ee0..be1e1a9 100644
--- a/src/posts/mod.rs
+++ b/src/posts/mod.rs
@@ -1,6 +1,8 @@
+use std::collections::HashSet;
+
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
-use markdown::{mdast::Node, Constructs, ParseOptions};
+use markdown::{mdast::Node, Constructs, Options, ParseOptions};
 use rocket::http::Status;
 use serde::{ser::SerializeStruct, Deserialize, Serialize};
 use tokio::fs;
@@ -28,15 +30,23 @@ pub struct Post<D: Content> {
     updated_at: Option<DateTime<Utc>>,
     tags: Vec<String>,
     post_type: PostType,
+    render: Option<String>,
     data: D,
 }
 
-impl<D: Content> Serialize for Post<D> {
+impl<D: Content + Serialize> Post<D> {
+    pub async fn render(&mut self) -> Result<()> {
+        self.render = Some(self.data.render().await?);
+        Ok(())
+    }
+}
+
+impl<D: Content + Serialize> Serialize for Post<D> {
     fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
     where
         S: serde::Serializer,
     {
-        let mut state = serializer.serialize_struct("Post", 5)?;
+        let mut state = serializer.serialize_struct("Post", 7)?;
         state.serialize_field("subject", &self.subject)?;
         state.serialize_field("created_at", &self.created_at.to_string())?;
         state.serialize_field(
@@ -45,6 +55,8 @@ impl<D: Content> Serialize for Post<D> {
         )?;
         state.serialize_field("tags", &self.tags)?;
         state.serialize_field("post_type", &self.post_type)?;
+        state.serialize_field("render", &self.render)?;
+        state.serialize_field("data", &self.data)?;
         state.end()
     }
 }
@@ -52,29 +64,55 @@ impl<D: Content> Serialize for Post<D> {
 pub async fn get_blogposts() -> Result<Vec<Post<Article>>> {
     let mut blogposts: Vec<Post<Article>> = Vec::new();
     let mut articles_dir = fs::read_dir("./articles").await?;
-    while let Some(dir) = articles_dir.next_entry().await? {
-        let mut file_path = dir.path();
-        file_path.push(dir.file_name());
-        let file_path = file_path.with_extension("md");
-        println!("{:?}", file_path);
+    while let Some(file) = articles_dir.next_entry().await? {
+        let name = file.file_name();
+        let name = name.to_str().unwrap_or_default()[..name.len() - 3].to_owned();
         let blogpost: Article = Article {
-            path: file_path.to_str().unwrap_or_default().to_owned(),
+            path: file.path().to_str().unwrap_or_default().to_owned(),
+            name,
         };
         let blogpost = Post::try_from(blogpost).await.unwrap();
-        println!("{:?}", blogpost);
         blogposts.push(blogpost);
     }
     Ok(blogposts)
 }
 
+pub async fn get_blogpost(post_name: &str) -> Result<Post<Article>> {
+    let mut articles_dir = fs::read_dir("./articles").await?;
+    while let Some(file) = articles_dir.next_entry().await? {
+        let name = file.file_name();
+        let name = &name.to_str().unwrap_or_default()[..name.len() - 3];
+        if name == post_name {
+            let blogpost = Article {
+                path: file.path().to_str().unwrap_or_default().to_owned(),
+                name: name.to_owned(),
+            };
+            let blogpost = Post::try_from(blogpost).await.unwrap();
+            return Ok(blogpost);
+        }
+    }
+    Err(BlossomError::NotFound(Status::new(404)))
+}
+
+pub fn get_tags<D: Content>(posts: &Vec<Post<D>>) -> HashSet<String> {
+    posts.into_iter().fold(HashSet::new(), |mut acc, post| {
+        let tags = &post.tags;
+        for tag in tags {
+            acc.insert(tag.to_owned());
+        }
+        acc
+    })
+}
+
 #[async_trait]
 pub trait Content {
     async fn render(&self) -> Result<String>;
 }
 
-#[derive(Debug)]
+#[derive(Serialize, Debug)]
 pub struct Article {
     path: String,
+    name: String,
 }
 
 impl Article {
@@ -116,7 +154,17 @@ impl Content for Article {
         let mut file = fs::File::open(&self.path).await?;
         let mut buf = String::new();
         file.read_to_string(&mut buf).await?;
-        Ok(markdown::to_html(&buf))
+        let options = Options {
+            parse: ParseOptions {
+                constructs: Constructs {
+                    frontmatter: true,
+                    ..Constructs::default()
+                },
+                ..ParseOptions::default()
+            },
+            ..Options::default()
+        };
+        Ok(markdown::to_html_with_options(&buf, &options).unwrap())
     }
 }
 
@@ -144,6 +192,7 @@ impl Post<Article> {
             updated_at,
             tags: metadata.tags,
             post_type: PostType::Article,
+            render: None,
             data: article,
         })
     }
-- 
cgit