1 files changed, 62 insertions, 0 deletions
diff --git a/src/version.rs b/src/version.rs
new file mode 100644
index 0000000..70cae8d
--- /dev/null
+++ b/src/version.rs
@@ -0,0 +1,62 @@
+use clap::Args;
+#[cfg(feature = "update-check")]
+use eyre::OptionExt;
+
+#[derive(Args, Clone, Debug)]
+pub struct VersionCommand {
+    /// Checks for updates
+    #[clap(long)]
+    #[cfg(feature = "update-check")]
+    check: bool,
+}
+
+impl VersionCommand {
+    pub async fn run(self) -> eyre::Result<()> {
+        println!("{}", env!("CARGO_PKG_VERSION"));
+        #[cfg(feature = "update-check")]
+        self.update_msg().await?;
+        Ok(())
+    }
+
+    #[cfg(feature = "update-check")]
+    pub async fn update_msg(self) -> eyre::Result<()> {
+        use std::cmp::Ordering;
+
+        if self.check {
+            let url = url::Url::parse("https://codeberg.org/")?;
+            let api = forgejo_api::Forgejo::new(forgejo_api::Auth::None, url)?;
+
+            let latest = api
+                .repo_get_latest_release("Cyborus", "forgejo-cli")
+                .await?;
+            let latest_tag = latest
+                .tag_name
+                .ok_or_eyre("latest release does not have name")?;
+            let latest_ver = latest_tag
+                .strip_prefix("v")
+                .unwrap_or(&latest_tag)
+                .parse::<semver::Version>()?;
+
+            let current_ver = env!("CARGO_PKG_VERSION").parse::<semver::Version>()?;
+
+            match current_ver.cmp(&latest_ver) {
+                Ordering::Less => {
+                    let latest_url = latest
+                        .html_url
+                        .ok_or_eyre("latest release does not have url")?;
+                    println!("New version available: {latest_ver}");
+                    println!("Get it at {}", latest_url);
+                }
+                Ordering::Equal => {
+                    println!("Up to date!");
+                }
+                Ordering::Greater => {
+                    println!("You are ahead of the latest published version");
+                }
+            }
+        } else {
+            println!("Check for a new version with `fj version --check`");
+        }
+        Ok(())
+    }
+}