move code to dagger-core

crates/dagger-core/src/engine.rs

@@ -0,0 +1,48 @@
+use std::process::Child;
+
+use crate::{
+    cli_session::CliSession, config::Config, connect_params::ConnectParams, downloader::Downloader,
+};
+
+pub struct Engine {}
+
+impl Engine {
+    pub fn new() -> Self {
+        Self {}
+    }
+
+    fn from_cli(&self, cfg: &Config) -> eyre::Result<(ConnectParams, Child)> {
+        let cli = Downloader::new("0.3.10".into())?.get_cli()?;
+
+        let cli_session = CliSession::new();
+
+        Ok(cli_session.connect(cfg, &cli)?)
+    }
+
+    pub fn start(&self, cfg: &Config) -> eyre::Result<(ConnectParams, Child)> {
+        // TODO: Add from existing session as well
+        self.from_cli(cfg)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{config::Config, connect_params::ConnectParams};
+
+    use super::Engine;
+
+    // TODO: these tests potentially have a race condition
+    #[test]
+    fn engine_can_start() {
+        let engine = Engine::new();
+        let params = engine.start(&Config::new(None, None, None, None)).unwrap();
+
+        assert_ne!(
+            params.0,
+            ConnectParams {
+                port: 123,
+                session_token: "123".into()
+            }
+        )
+    }
+}