Adding initial scaffolding for init command behind cargo flag (#2443)

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This is the initial scaffolding for a new `init` command as a new
module.

This command is behind the `init` cargo feature flag
Run: `cargo run --features init init` or `cargo --features init rover
init` to test command locally

This command currently only prints a welcome message to the terminal.

Author: tayrrible

Cargo.toml

@@ -46,6 +46,10 @@ default = ["composition-js"]
 # because of this GitHub issue: https://github.com/denoland/deno/issues/3711
 composition-js = []
 
+# this feature exists to enable the
+# init command
+init = []
+
 ### cross-workspace dependencies
 # these dependencies can be used by any other workspace crate by specifying the dependency like so:
 # my-dependency = { workspace = true }

src/cli.rs

@@ -177,6 +177,8 @@ impl Rover {
         }
 
         match &self.command {
+            #[cfg(feature = "init")]
+            Command::Init(command) => command.run().await,
             Command::Cloud(command) => command.run(self.get_client_config()?).await,
             Command::Config(command) => command.run(self.get_client_config()?).await,
             Command::Contract(command) => command.run(self.get_client_config()?).await,
@@ -355,6 +357,10 @@ impl Rover {
 
 #[derive(Debug, Serialize, Parser)]
 pub enum Command {
+    /// Initialize a GraphQL API project using Apollo Federation with Apollo Router
+    #[cfg(feature = "init")]
+    Init(command::Init),
+
     /// Cloud configuration commands
     Cloud(command::Cloud),
 

src/command/init/mod.rs

@@ -0,0 +1,15 @@
+use clap::Parser;
+use serde::Serialize;
+
+use crate::{RoverOutput, RoverResult};
+
+#[derive(Debug, Serialize, Parser)]
+pub struct Init {}
+
+impl Init {
+    pub async fn run(&self) -> RoverResult<RoverOutput> {
+        println!("\nWelcome! This command helps you initialize a new GraphQL API project using Apollo Federation with Apollo Router.\n");
+
+        Ok(RoverOutput::EmptySuccess)
+    }
+}

src/command/mod.rs

@@ -6,6 +6,8 @@ mod docs;
 mod explain;
 mod graph;
 mod info;
+#[cfg(feature = "init")]
+mod init;
 pub(crate) mod install;
 mod license;
 #[cfg(feature = "composition-js")]
@@ -26,6 +28,8 @@ pub use docs::Docs;
 pub use explain::Explain;
 pub use graph::Graph;
 pub use info::Info;
+#[cfg(feature = "init")]
+pub use init::Init;
 pub use install::Install;
 pub use license::License;
 #[cfg(feature = "composition-js")]