cli: Get fetch after track working

When tracking a repository with the `--fetch` option, we run a fetch
once the tracking is done.

When tracking nodes, we don't accept the `--fetch` flag, as there may
not be a repository to fetch.

radicle-cli/examples/rad-fetch.md

@@ -9,13 +9,13 @@ storage. In this scenario, we know that the project is
 have to track the project.
 
 ```
-$ rad track rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji
+$ rad track rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji --no-fetch
 ✓ Tracking policy updated for rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji with scope 'trusted'
-! Warning: fetch after track is not yet supported
 ```
 
 Now that the project is tracked we can fetch it and we will have it in
-our local storage.
+our local storage. Note that the `track` command can also be told to fetch
+by passing the `--fetch` option.
 
 ```
 $ rad sync --fetch rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji

radicle-cli/examples/rad-node.md

@@ -35,7 +35,7 @@ those commands we'll first track a peer so that we have something to
 see.
 
 ```
-$ rad track did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --alias Bob --no-fetch
+$ rad track did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --alias Bob
 ✓ Tracking policy updated for z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk (Bob)
 ```
 

radicle-cli/examples/rad-track.md

@@ -2,7 +2,7 @@ To configure our node's tracking policy, we can use the `rad track` command.
 For example, let's track a remote node we know about, and alias it to "eve":
 
 ```
-$ rad track did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --alias eve --no-fetch
+$ rad track did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --alias eve
 ✓ Tracking policy updated for z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk (eve)
 ```
 

radicle-cli/examples/workflow/5-patching-maintainer.md

@@ -5,7 +5,6 @@ Changes have been proposed by another person (or peer) via a radicle patch.  To
 ```
 $ rad track did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --alias bob
 ✓ Tracking policy updated for z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk (bob)
-! Warning: fetch after track is not yet supported
 $ rad sync --fetch
 ✓ Fetching rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji from z6Mkt67…v4N1tRk..
 ✓ Fetched repository from 1 seed(s)
@@ -15,7 +14,8 @@ Additionally, we need to add a new 'git remote' to our working copy for the
 peer.  Upcoming versions of radicle will not require this step.
 
 ```
-$ git remote add bob rad://z42hL2jL4XNk6K8oHQaSWfMgCL7ji/z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
+$ rad remote add z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk --name bob
+✓ Remote bob added with rad://z42hL2jL4XNk6K8oHQaSWfMgCL7ji/z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
 $ git fetch bob
 ```
 

radicle-cli/src/commands/track.rs

@@ -6,6 +6,7 @@ use radicle::node::tracking::{Alias, Scope};
 use radicle::node::{Handle, NodeId};
 use radicle::{prelude::*, Node};
 
+use crate::commands::rad_sync as sync;
 use crate::terminal as term;
 use crate::terminal::args::{Args, Error, Help};
 
@@ -16,7 +17,7 @@ pub const HELP: Help = Help {
     usage: r#"
 Usage
 
-    rad track <nid> [--[no-]fetch] [--alias <name>] [<option>...]
+    rad track <nid> [--alias <name>] [<option>...]
     rad track <rid> [--[no-]fetch] [--scope <scope>] [<option>...]
 
     The `track` command takes either an NID or an RID. Based on the argument, it will
@@ -30,7 +31,7 @@ Usage
 Options
 
     --alias <name>         Associate an alias to a tracked node
-    --fetch                Fetch refs after tracking
+    --[no-]fetch           Fetch refs after tracking
     --scope <scope>        Node (remote) tracking scope for a repository
     --verbose, -v          Verbose output
     --help                 Print help
@@ -94,7 +95,8 @@ impl Args for Options {
                         .ok_or_else(|| anyhow!("scope specified is not UTF-8"))?
                         .parse()?;
                 }
-                (Long("no-fetch"), _) => fetch = false,
+                (Long("fetch"), Some(Operation::TrackRepo { .. })) => fetch = true,
+                (Long("no-fetch"), Some(Operation::TrackRepo { .. })) => fetch = false,
                 (Long("verbose") | Short('v'), _) => verbose = true,
                 (Long("help"), _) => {
                     return Err(Error::Help.into());
@@ -121,15 +123,17 @@ pub fn run(options: Options, ctx: impl term::Context) -> anyhow::Result<()> {
     let mut node = radicle::Node::new(profile.socket());
 
     match options.op {
-        Operation::TrackNode { nid, alias } => track_node(nid, alias, &mut node),
-        Operation::TrackRepo { rid, scope } => track_repo(rid, scope, &mut node),
-    }?;
+        Operation::TrackNode { nid, alias } => {
+            track_node(nid, alias, &mut node)?;
+        }
+        Operation::TrackRepo { rid, scope } => {
+            track_repo(rid, scope, &mut node)?;
 
-    if options.fetch {
-        // TODO: Run a proper fetch here.
-        term::warning("fetch after track is not yet supported");
+            if options.fetch {
+                sync::fetch(rid, profile, &mut node, None)?;
+            }
+        }
     }
-
     Ok(())
 }