Creating a SiteRenderer struct to handle the logic for invoking dust.

src/command/build/mod.rs

@@ -1,3 +1,4 @@
+mod render;
 mod runner;
 
 pub(crate) use runner::build_site;

src/command/build/render.rs

@@ -0,0 +1,21 @@
+use std::path::PathBuf;
+
+use crate::blog_post::convert_blog_post_to_render_context;
+use crate::blog_post::BlogPost;
+use crate::error::CustomError;
+
+pub(crate) struct SiteRenderer {
+    pub(crate) output_directory: PathBuf,
+    pub(crate) blog_posts: Vec<BlogPost>,
+}
+
+impl SiteRenderer {
+    pub(crate) async fn render_blog_posts(&self) -> Result<(), CustomError> {
+        for blog_post in &self.blog_posts {
+            let render_context = convert_blog_post_to_render_context(blog_post);
+            println!("{}", serde_json::to_string(&render_context)?);
+        }
+
+        Ok(())
+    }
+}

src/command/build/runner.rs

@@ -1,20 +1,19 @@
 use std::path::PathBuf;
 
-use crate::blog_post::convert_blog_post_to_render_context;
 use crate::blog_post::BlogPost;
 use crate::cli::parameters::BuildArgs;
+use crate::command::build::render::SiteRenderer;
 use crate::config::Config;
 use crate::error::CustomError;
 
 pub(crate) async fn build_site(args: BuildArgs) -> Result<(), CustomError> {
     let config = Config::load_from_file(args.config).await?;
     let blog_posts = load_blog_posts(&config).await?;
-    println!("{:?}", blog_posts);
-
-    for blog_post in &blog_posts {
-        let render_context = convert_blog_post_to_render_context(blog_post);
-        println!("{}", serde_json::to_string(&render_context)?);
-    }
+    let renderer = SiteRenderer {
+        output_directory: get_output_directory(&config).await?,
+        blog_posts,
+    };
+    renderer.render_blog_posts().await?;
 
     Ok(())
 }