1 files changed, 71 insertions, 0 deletions
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
new file mode 100644
index 0000000..764e2e9
--- /dev/null
+++ b/src/utils/mod.rs
@@ -0,0 +1,71 @@
+use std::borrow::Cow;
+use std::path::PathBuf;
+
+pub mod data;
+pub mod deploy;
+pub mod push;
+
+macro_rules! good_panic {
+    ($($tts:tt)*) => {{
+        error!($($tts)*);
+        std::process::exit(1);
+    }}
+}
+
+pub struct DeployData<'a> {
+    pub sudo: Option<String>,
+    pub ssh_user: Cow<'a, str>,
+    pub profile_user: Cow<'a, str>,
+    pub profile_path: String,
+    pub current_exe: PathBuf,
+}
+
+pub async fn make_deploy_data<'a>(
+    profile_name: &str,
+    node_name: &str,
+    merged_settings: &'a data::GenericSettings,
+) -> Result<DeployData<'a>, Box<dyn std::error::Error>> {
+    let ssh_user: Cow<str> = match &merged_settings.ssh_user {
+        Some(u) => u.into(),
+        None => whoami::username().into(),
+    };
+
+    let profile_user: Cow<str> = match &merged_settings.user {
+        Some(x) => x.into(),
+        None => match &merged_settings.ssh_user {
+            Some(x) => x.into(),
+            None => good_panic!(
+                "Neither user nor sshUser set for profile `{}` of node `{}`",
+                profile_name,
+                node_name
+            ),
+        },
+    };
+
+    let profile_path = match &profile_user[..] {
+        "root" => format!("/nix/var/nix/profiles/{}", profile_name),
+        _ => format!(
+            "/nix/var/nix/profiles/per-user/{}/{}",
+            profile_user, profile_name
+        ),
+    };
+
+    let sudo: Option<String> = match merged_settings.user {
+        Some(ref user) if user != &ssh_user => Some(format!("sudo -u {}", user)),
+        _ => None,
+    };
+
+    let current_exe = std::env::current_exe().expect("Expected to find current executable path");
+
+    if !current_exe.starts_with("/nix/store/") {
+        good_panic!("The deploy binary must be in the Nix store");
+    }
+
+    Ok(DeployData {
+        sudo,
+        ssh_user,
+        profile_user,
+        profile_path,
+        current_exe,
+    })
+}