feat: function to check for updates

Cargo.toml

@@ -30,3 +30,6 @@ openxr = { git = "https://github.com/galister/openxrs", rev = "af4a55d", feature
 ash = "0.38.0"
 sha2 = "0.10.8"
 tokio = { version = "1.39.3", features = ["process"] }
+
+[features]
+appimage = []

dist/appimage/build_appimage.sh

@@ -7,7 +7,7 @@ if [[ ! -f Cargo.toml ]]; then
     exit 1
 fi
 
-meson setup appimage_build -Dprefix=/usr -Dprofile=default
+meson setup appimage_build -Dprefix=/usr -Dprofile=default -Dappimage=true
 DESTDIR="$PWD/AppDir" ninja -C appimage_build install
 curl -SsLO https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
 chmod +x linuxdeploy-x86_64.AppImage

meson_options.txt

@@ -8,3 +8,9 @@ option(
   value: 'default',
   description: 'The build profile. One of "default" or "development".'
 )
+option(
+  'appimage',
+  type: 'boolean',
+  value: false,
+  description: 'Enable AppImage specific features.'
+)

src/downloader.rs

@@ -25,7 +25,7 @@ fn sync_client() -> reqwest::blocking::Client {
         .expect("Failed to build reqwest::blocking::Client")
 }
 
-fn async_client() -> reqwest::Client {
+pub fn async_client() -> reqwest::Client {
     reqwest::Client::builder()
         .timeout(TIMEOUT)
         .default_headers(headers())

src/main.rs

@@ -44,6 +44,9 @@ pub mod vulkaninfo;
 pub mod xdg;
 pub mod xr_devices;
 
+#[cfg(feature = "appimage")]
+pub mod updater;
+
 fn restore_steam_xr_files() {
     let active_runtime = get_current_active_runtime();
     let openvrpaths = get_current_openvrpaths();

src/meson.build

@@ -23,6 +23,16 @@ else
   message('Building in debug mode')
 endif
 
+features = []
+
+if get_option('appimage') == true
+  features += 'appimage'
+endif
+
+if features.length() > 0
+  cargo_options += ['--features', ','.join(features)]
+endif
+
 cargo_env = [ 'CARGO_HOME=' + meson.project_build_root() / 'cargo-home' ]
 
 cargo_build = custom_target(

src/updater.rs

@@ -0,0 +1,44 @@
+use anyhow::bail;
+use reqwest::Method;
+use serde::Deserialize;
+
+use crate::{constants::VERSION, downloader::async_client};
+
+const GITLAB_PROJ_ID: &str = "46446166";
+
+#[derive(Deserialize, Clone)]
+struct GitLabCommit {
+    id: String,
+}
+
+type GitLabCommitList = Vec<GitLabCommit>;
+
+pub async fn check_updates_available() -> anyhow::Result<bool> {
+    let client = async_client();
+    if VERSION.contains("-") {
+        // dev releases, check commits
+        let shorthash = VERSION.split('-').last().unwrap_or_default();
+        let url = format!(
+            "https://gitlab.com/api/v4/projects/{GITLAB_PROJ_ID}/repository/commits?ref_name=main"
+        );
+        let res = client.request(Method::GET, url).send().await?;
+        match res.error_for_status() {
+            Err(e) => Err(e.into()),
+            Ok(res) => {
+                let text = res.text().await?;
+                let commit_list: GitLabCommitList = serde_json::from_str(&text)?;
+                if commit_list
+                    .get(0)
+                    .is_some_and(|c| c.id.starts_with(shorthash))
+                {
+                    Ok(false)
+                } else {
+                    Ok(true)
+                }
+            }
+        }
+    } else {
+        // stable releases, check tags
+        bail!("Not implemented yet!")
+    }
+}