moss/cli/info: Pretty print information now

Signed-off-by: Ikey Doherty <ikey@serpentos.com>

moss/src/cli/info.rs

@@ -6,11 +6,16 @@ use std::path::PathBuf;
 
 use clap::{arg, ArgMatches, Command};
 use futures::StreamExt;
+use itertools::Itertools;
 use moss::{
     client::{self, Client},
     package::{Flags, Name},
+    Package,
 };
 use thiserror::Error;
+use tui::Stylize;
+
+const COLUMN_WIDTH: usize = 20;
 
 pub fn command() -> Command {
     Command::new("info")
@@ -42,14 +47,66 @@ pub async fn handle(args: &ArgMatches) -> Result<(), Error> {
             return Err(Error::NotFound(pkg));
         }
         for candidate in resolved {
-            // TODO: Pretty print
-            println!("{:?}", candidate.meta);
+            print_package(&candidate);
         }
     }
 
     Ok(())
 }
 
+/// Print the title for each metadata section
+fn print_titled(title: &'static str) {
+    let display_width = COLUMN_WIDTH - title.len();
+    print!("{}{:width$} ", title.bold(), " ", width = display_width);
+}
+
+/// HAX: Printing a paragraph by line breaks.
+/// TODO: Split into proper paragraphs - limited to num columns in tty
+fn print_paragraph(p: &str) {
+    for (index, line) in p.lines().enumerate() {
+        match index {
+            0 => println!("{}", line),
+            _ => println!("{:width$} {}", " ", line.dim(), width = COLUMN_WIDTH),
+        }
+    }
+}
+
+/// Pretty print a package
+fn print_package(pkg: &Package) {
+    print_titled("Name");
+    println!("{}", pkg.meta.name);
+    print_titled("Version");
+    println!("{}", pkg.meta.version_identifier);
+    print_titled("Summary");
+    println!("{}", pkg.meta.summary);
+    print_titled("Description");
+    print_paragraph(&pkg.meta.description);
+    print_titled("Homepage");
+    println!("{}", pkg.meta.homepage);
+    if !pkg.meta.dependencies.is_empty() {
+        print_titled("Dependencies");
+        let deps = pkg
+            .meta
+            .dependencies
+            .iter()
+            .map(|d| d.to_string())
+            .sorted()
+            .join("\n");
+        print_paragraph(&deps);
+    }
+    if !pkg.meta.providers.is_empty() {
+        print_titled("Providers");
+        let provs = pkg
+            .meta
+            .providers
+            .iter()
+            .map(|p| p.to_string())
+            .sorted()
+            .join("\n");
+        print_paragraph(&provs);
+    }
+}
+
 #[derive(Debug, Error)]
 pub enum Error {
     #[error("client error: {0}")]