ChatGPT Codex 5.2 xhigh refactored > 45min

crates/lanspread-peer/src/identity.rs

@@ -0,0 +1,44 @@
+use std::path::PathBuf;
+
+use uuid::Uuid;
+
+const PEER_ID_FILE: &str = "peer_id";
+
+pub const FEATURE_LIBRARY_DELTA: &str = "library-delta-v1";
+pub const FEATURE_LIBRARY_SNAPSHOT: &str = "library-snapshot-v1";
+
+pub fn load_or_create_peer_id() -> eyre::Result<String> {
+    let path = peer_id_path();
+    if let Ok(existing) = std::fs::read_to_string(&path) {
+        let trimmed = existing.trim();
+        if !trimmed.is_empty() {
+            return Ok(trimmed.to_string());
+        }
+    }
+
+    let peer_id = Uuid::now_v7().simple().to_string();
+    if let Some(parent) = path.parent() {
+        std::fs::create_dir_all(parent)?;
+    }
+    std::fs::write(&path, peer_id.as_bytes())?;
+    Ok(peer_id)
+}
+
+pub fn default_features() -> Vec<String> {
+    vec![
+        FEATURE_LIBRARY_DELTA.to_string(),
+        FEATURE_LIBRARY_SNAPSHOT.to_string(),
+    ]
+}
+
+fn peer_id_path() -> PathBuf {
+    if let Some(dir) = std::env::var_os("LANSPREAD_STATE_DIR") {
+        return PathBuf::from(dir).join(PEER_ID_FILE);
+    }
+
+    if let Some(home) = std::env::var_os("HOME").or_else(|| std::env::var_os("USERPROFILE")) {
+        return PathBuf::from(home).join(".lanspread").join(PEER_ID_FILE);
+    }
+
+    std::env::temp_dir().join("lanspread").join(PEER_ID_FILE)
+}