play status with corresponding commands

src/input.rs

@@ -6,9 +6,42 @@ pub (crate) struct Args {
     /// Path to the configuration file listing podcast RSS feeds.
     #[arg(default_value = "./podcasts.toml")]
     pub (crate) config : path::PathBuf,
-    /// The podcast to update. Updates all in configuration file if unspecified.
-    #[arg(long, short)]
-    pub (crate) podcast : Option<String>,
+    #[command(subcommand)]
+    pub (crate) command : Command,
+}
+
+#[derive(clap::ValueEnum, Copy, Clone, Debug,PartialEq, Eq, PartialOrd, Ord)]
+pub (crate) enum ListenStatus {
+    Listened,
+    Unlistened,
+}
+
+#[derive(clap::Subcommand)]
+pub (crate) enum Command {
+    /// Updates feed and downloads latest episodes.
+    Download {
+        /// The podcast to update. Updates all in configuration file if unspecified.
+        #[arg(long, short)]
+        podcast : Option<String>,
+    },
+    /// Lists the episodes for a given podcast, filtered based on if it has been listened or not.
+    List {
+        /// Filter for if episodes have been listened to or not.
+        #[arg(long, short)]
+        status : Option<ListenStatus>,
+        /// The podcast to list episodes for.
+        #[arg(long, short)]
+        podcast : String,
+    },
+    /// Marks an entire podcast's history of episodes as played or unplayed.
+    Mark {
+        /// The new listen status for the episodes.
+        #[arg(long, short)]
+        status : ListenStatus,
+        /// The podcast to change the listen status of.
+        #[arg(long, short)]
+        podcast : String,
+    },
 }
 
 /// Struct modelling configuration file format.