Implement render_post_listing

src/main.rs

@@ -43,16 +43,32 @@ fn read_posts_dir(cwd: &path::PathBuf) -> fs::ReadDir {
     }
 }
 
+fn render_post_listing(cwd: &path::PathBuf, layout: &str, posts: &Vec<Post>) {
+    let post_listing = posts
+        .iter()
+        .map(|ref post| format!("<li><a href='/{}/'>{}</a></li>", post.slug, post.title))
+        .collect::<Vec<String>>()
+        .join("\n");
+
+    let output = layout.replace("{{ contents }}", &post_listing);
+    fs::write(cwd.join("public").join("index.html"), &output).expect("Unable to write file");
+}
+
 fn main() {
     let cwd = env::current_dir()
         .expect("Couldn't read current directory");
+    let layout = fs::read_to_string(cwd.join("templates").join("layout.html")).expect("Couldn't find layout template");
     let post_paths = read_posts_dir(&cwd.join("posts"));
+    let mut posts: Vec<Post> = vec![];
     for path in post_paths {
         match path {
             Ok(p) => {
                 let post = parse_post(p.path());
-            },
+                posts.push(post);
+            }
             Err(err) => panic!(err),
         }
     }
+
+    render_post_listing(&cwd, &layout, &posts);
 }