cli: Prepare for rebuilding the site via file watcher.

src/main.rs

@@ -20,7 +20,7 @@ use chrono::prelude::*;
 use colored::Colorize;
 use docopt::Docopt;
 
-use notify::{RecommendedWatcher, RecursiveMode, Watcher};
+use notify::{DebouncedEvent, RecommendedWatcher, RecursiveMode, Watcher};
 
 use rookeries::{
     cli::{
@@ -210,19 +210,47 @@ fn watch(watch_path: String) -> notify::Result<()> {
     let plugins_dir = project_root_dir.join("plugins");
     watcher.watch(plugins_dir, RecursiveMode::NonRecursive)?;
 
+    let build_dir = project_root_dir.join("build");
+
     loop {
         match rx.recv() {
-            // TODO: Add calls to build_site()
             // TODO: Add more fine-grained control to avoid a full rebuild for minor changes.
-            Ok(event) => details_message(&format!("{:?}", event)),
+            // TODO: Add in a safe place to build the site.
+            Ok(event) => {
+                details_message(&format!("{:?}", event));
+
+                match event {
+                    DebouncedEvent::Rescan => (),
+                    DebouncedEvent::Remove(path) => {
+                        if path.starts_with(&build_dir) {
+                            details_message("Build path");
+                        }
+                    }
+                    DebouncedEvent::Create(path) => {
+                        if path.starts_with(&build_dir) {
+                            details_message("Build path");
+                        }
+                    }
+                    _ => {
+                        details_message("Not build path");
+                    }
+                }
+            }
             Err(e) => details_message(&format!("watch error: {:?}", e)),
         }
     }
 }
 
+#[deprecated]
 fn build_site(args: &Args) -> Result {
     header_message("Building the site...");
     let project_directory = get_project_directory(&args)?;
+    build_site_from_path(project_directory)
+}
+
+// TODO: Update to be just build_site...
+fn build_site_from_path(project_directory: PathBuf) -> Result {
+    header_message("Building the site...");
 
     // Check if project manifest is available.
     let project_manifest = project_directory.clone().join("site.toml");