feat: Setup the CLI and create repo view command

Signed-off-by: Awiteb <a@4rs.nl>

src/cli/repo/view.rs

@@ -0,0 +1,86 @@
+// n34 - A CLI to interact with NIP-34 and other stuff related to codes in nostr
+// Copyright (C) 2025 Awiteb <a@4rs.nl>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
+
+use std::fmt;
+
+use clap::Args;
+use nostr::nips::nip19::Nip19Coordinate;
+
+use crate::{
+    cli::{CliOptions, CommandRunner, parsers},
+    error::N34Result,
+    nostr_utils::NostrClient,
+};
+
+/// Arguments for the `repo view` command
+#[derive(Args, Debug)]
+pub struct ViewArgs {
+    /// Nostr repository address
+    #[arg(short, long, value_parser = parsers::repo_naddr)]
+    naddr: Nip19Coordinate,
+}
+
+impl CommandRunner for ViewArgs {
+    async fn run(&self, options: CliOptions) -> N34Result<()> {
+        let client = NostrClient::init(&options).await;
+        if !self.naddr.relays.is_empty() {
+            client.add_read_relays(&self.naddr.relays).await;
+        }
+
+        let repo = client.fetch_repo(&self.naddr).await?;
+        let mut msg = format!("ID: {}", repo.id);
+
+        if let Some(name) = repo.name {
+            msg.push_str(&format!("\nName: {name}"));
+        }
+        if let Some(desc) = repo.description {
+            msg.push_str(&format!("\nDescription: {desc}"));
+        }
+        if !repo.web.is_empty() {
+            msg.push_str(&format!("\nWebpages:\n{}", format_list(repo.web)));
+        }
+        if !repo.clone.is_empty() {
+            msg.push_str(&format!("\nClone urls:\n{}", format_list(repo.clone)));
+        }
+        if !repo.relays.is_empty() {
+            msg.push_str(&format!("\nRelays:\n{}", format_list(repo.relays)));
+        }
+        if let Some(euc) = repo.euc {
+            msg.push_str(&format!("\nEarliest unique commit: {euc}"));
+        }
+        if !repo.maintainers.is_empty() {
+            msg.push_str(&format!(
+                "\nMaintainers:\n{}",
+                format_list(repo.maintainers)
+            ));
+        }
+
+        println!("{msg}");
+        Ok(())
+    }
+}
+
+/// Format a vector to print it
+fn format_list<T>(vector: Vec<T>) -> String
+where
+    T: fmt::Display,
+{
+    vector
+        .into_iter()
+        .map(|t| format!(" - {t}"))
+        .collect::<Vec<String>>()
+        .join("\n")
+}