Convert enum arguments to structs

Signed-off-by: Jacob Kiers <jacob@jacobkiers.net>

src/cli.rs

@@ -1,6 +1,6 @@
 use std::path::PathBuf;
 
-use clap::{Parser, Subcommand};
+use clap::{Args, Parser, Subcommand};
 
 #[derive(Parser)]
 #[clap(author, version, about, long_about = None)]
@@ -9,35 +9,41 @@ pub(crate) struct Cli {
     pub command: Command,
 }
 
+#[derive(Args)]
+pub(crate) struct ImapSettings {
+    #[clap(short, long, value_parser)]
+    pub server: String,
+    #[clap(long, value_parser, default_value_t = 993)]
+    pub port: u16,
+    #[clap(short, long, value_parser)]
+    pub username: String,
+    #[clap(short, long, value_parser)]
+    pub password: String,
+}
+
+#[derive(Args)]
+pub(crate) struct FeedBuilderSettings {
+    /// Host name hosting the feed
+    pub hostname: String,
+    /// Feed file
+    #[clap(value_parser, default_value = "output/feed.xml")]
+    pub filename: PathBuf,
+    /// Create an HTML file for each message
+    #[clap(short, long, value_parser, default_value_t = false)]
+    pub include_html: bool,
+}
+
 #[derive(Subcommand)]
 pub(crate) enum Command {
     /// Fetch emails from an IMAP server
-    FetchFromImap {
+    FetchFromImap(ImapSettings),
-        #[clap(short, long, value_parser)]
-        server: String,
-        #[clap(long, value_parser, default_value_t = 993)]
-        port: u16,
-        #[clap(short, long, value_parser)]
-        username: String,
-        #[clap(short, long, value_parser)]
-        password: String,
-    },
     /// Fetch an email from a .eml file
     FetchFromFile {
         #[clap(value_parser)]
         filename: PathBuf,
     },
     /// Build an ATOM feed containing the full contents of the email
-    BuildFeed {
+    BuildFeed(FeedBuilderSettings),
-        /// Host name hosting the feed
-        hostname: String,
-        /// Feed file
-        #[clap(value_parser, default_value = "output/feed.xml")]
-        filename: PathBuf,
-        /// Create an HTML file for each message
-        #[clap(short, long, value_parser, default_value_t = false)]
-        include_html: bool,
-    },
     /// Exports the emails as HTML files
     ExportHtml {
         /// The directory in which the emails will be stored

src/main.rs

@@ -29,24 +29,22 @@ fn main() -> Result<(), Box<dyn Error>> {
     let data_directory = "data";
 
     let result = match &cli.command {
-        cli::Command::FetchFromImap {
+        cli::Command::FetchFromImap(imap_settings) => fetch_from_imap(
-            server,
-            port,
-            username,
-            password,
-        } => fetch_from_imap(
             data_directory,
-            server.to_owned(),
+            imap_settings.server.to_owned(),
-            *port,
+            imap_settings.port,
-            username.to_owned(),
+            imap_settings.username.to_owned(),
-            password.to_owned(),
+            imap_settings.password.to_owned(),
         ),
-        cli::Command::BuildFeed {
+
-            filename,
+        cli::Command::BuildFeed(settings) => build_feed(
-            hostname,
+            &settings.filename,
-            include_html,
+            &settings.hostname,
-        } => build_feed(filename, hostname, *include_html),
+            settings.include_html,
+        ),
+
         cli::Command::Update => command::update::self_update(),
+
         _ => unimplemented!("This method is not yet implemented."),
     };
 
@@ -168,10 +166,7 @@ fn fetch_from_imap(
         );
 
         let path = get_path(&parsed, &msg);
-        let html_path: PathBuf = [
+        let html_path: PathBuf = [Path::new(data_directory), Path::new(&format!("{path}.eml"))]
-            Path::new(data_directory),
-            Path::new(&format!("{path}.eml")),
-        ]
             .iter()
             .collect();