Extract rollout into its own crate (#15548)

codex-rs/rollout/src/config.rs

@@ -0,0 +1,100 @@
+use std::path::Path;
+use std::path::PathBuf;
+use std::sync::Arc;
+
+pub trait RolloutConfigView {
+    fn codex_home(&self) -> &Path;
+    fn sqlite_home(&self) -> &Path;
+    fn cwd(&self) -> &Path;
+    fn model_provider_id(&self) -> &str;
+    fn generate_memories(&self) -> bool;
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct RolloutConfig {
+    pub codex_home: PathBuf,
+    pub sqlite_home: PathBuf,
+    pub cwd: PathBuf,
+    pub model_provider_id: String,
+    pub generate_memories: bool,
+}
+
+pub type Config = RolloutConfig;
+
+impl RolloutConfig {
+    pub fn from_view(view: &impl RolloutConfigView) -> Self {
+        Self {
+            codex_home: view.codex_home().to_path_buf(),
+            sqlite_home: view.sqlite_home().to_path_buf(),
+            cwd: view.cwd().to_path_buf(),
+            model_provider_id: view.model_provider_id().to_string(),
+            generate_memories: view.generate_memories(),
+        }
+    }
+}
+
+impl RolloutConfigView for RolloutConfig {
+    fn codex_home(&self) -> &Path {
+        self.codex_home.as_path()
+    }
+
+    fn sqlite_home(&self) -> &Path {
+        self.sqlite_home.as_path()
+    }
+
+    fn cwd(&self) -> &Path {
+        self.cwd.as_path()
+    }
+
+    fn model_provider_id(&self) -> &str {
+        self.model_provider_id.as_str()
+    }
+
+    fn generate_memories(&self) -> bool {
+        self.generate_memories
+    }
+}
+
+impl<T: RolloutConfigView + ?Sized> RolloutConfigView for &T {
+    fn codex_home(&self) -> &Path {
+        (*self).codex_home()
+    }
+
+    fn sqlite_home(&self) -> &Path {
+        (*self).sqlite_home()
+    }
+
+    fn cwd(&self) -> &Path {
+        (*self).cwd()
+    }
+
+    fn model_provider_id(&self) -> &str {
+        (*self).model_provider_id()
+    }
+
+    fn generate_memories(&self) -> bool {
+        (*self).generate_memories()
+    }
+}
+
+impl<T: RolloutConfigView + ?Sized> RolloutConfigView for Arc<T> {
+    fn codex_home(&self) -> &Path {
+        self.as_ref().codex_home()
+    }
+
+    fn sqlite_home(&self) -> &Path {
+        self.as_ref().sqlite_home()
+    }
+
+    fn cwd(&self) -> &Path {
+        self.as_ref().cwd()
+    }
+
+    fn model_provider_id(&self) -> &str {
+        self.as_ref().model_provider_id()
+    }
+
+    fn generate_memories(&self) -> bool {
+        self.as_ref().generate_memories()
+    }
+}