rename crates/ → vessels/ — El's word for buildable units

Per the consolidation onto El: 'crates' is the Rust word, 'vessel' is El's (per spec/language.md §15). The directory rename is the structural marker that this slot holds an El buildable unit, even if its current contents are still Rust pending port. Mechanical: git mv crates vessels, sed workspace members and any path dependencies, update CI workflow paths, update README references. Cross-repo path dependencies (`../foo/crates/bar`) updated workspace- wide so cargo metadata still resolves where the Rust still builds.
2026-04-30 15:34:20 -05:00
parent c16b6ed602
commit be013d2b42
34 changed files with 5 additions and 5 deletions
@@ -0,0 +1,135 @@
+//! LSP API endpoints — completions, hover, errors, activate-preview.
+
+use axum::{
+    extract::{Query, State},
+    http::StatusCode,
+    Json,
+};
+use serde::{Deserialize, Serialize};
+
+use el_lsp::{Completion, Diagnostic, HoverInfo, LanguageServer};
+
+use crate::AppState;
+
+type ApiResult<T> = Result<Json<T>, (StatusCode, Json<serde_json::Value>)>;
+
+// ── Query types ───────────────────────────────────────────────────────────────
+
+#[derive(Debug, Deserialize)]
+pub struct SourceQuery {
+    pub source: String,
+    pub pos: Option<usize>,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct ActivatePreviewQuery {
+    pub type_name: String,
+    pub query: String,
+    pub source: Option<String>,
+}
+
+#[derive(Debug, Serialize)]
+pub struct ActivatePreviewResponse {
+    pub count: usize,
+    pub nodes: Vec<ActivateNode>,
+    pub connected: bool,
+}
+
+#[derive(Debug, Serialize)]
+pub struct ActivateNode {
+    pub id: String,
+    pub label: String,
+    pub score: f64,
+}
+
+// ── Handlers ──────────────────────────────────────────────────────────────────
+
+/// GET /api/lsp/complete?source=...&pos=...
+pub async fn complete(
+    Query(q): Query<SourceQuery>,
+) -> ApiResult<Vec<Completion>> {
+    let lsp = LanguageServer::new();
+    let pos = q.pos.unwrap_or(0);
+    let completions = lsp.complete(&q.source, pos);
+    Ok(Json(completions))
+}
+
+/// GET /api/lsp/hover?source=...&pos=...
+pub async fn hover(
+    Query(q): Query<SourceQuery>,
+) -> ApiResult<Option<HoverInfo>> {
+    let lsp = LanguageServer::new();
+    let pos = q.pos.unwrap_or(0);
+    let info = lsp.hover(&q.source, pos);
+    Ok(Json(info))
+}
+
+/// GET /api/lsp/errors?source=...
+pub async fn errors(
+    Query(q): Query<SourceQuery>,
+) -> ApiResult<Vec<Diagnostic>> {
+    let lsp = LanguageServer::new();
+    let diags = lsp.diagnostics(&q.source);
+    Ok(Json(diags))
+}
+
+/// GET /api/lsp/activate-preview?type_name=...&query=...&source=...
+///
+/// Returns a live preview of what nodes would activate for the given
+/// `activate TypeName where "query"` expression.
+pub async fn activate_preview(
+    State(state): State<AppState>,
+    Query(q): Query<ActivatePreviewQuery>,
+) -> ApiResult<ActivatePreviewResponse> {
+    let engram_url = &state.config.engram_url;
+
+    // Try to query the Engram DB for matching nodes
+    let client = reqwest::Client::new();
+    let url = format!("{engram_url}/api/activate-preview");
+    let body = serde_json::json!({
+        "type_name": q.type_name,
+        "query": q.query,
+        "limit": 5,
+    });
+
+    match client
+        .post(&url)
+        .json(&body)
+        .timeout(std::time::Duration::from_secs(5))
+        .send()
+        .await
+    {
+        Ok(resp) if resp.status().is_success() => {
+            let json: serde_json::Value = resp.json().await.unwrap_or_default();
+
+            let nodes: Vec<ActivateNode> = json["nodes"]
+                .as_array()
+                .map(|arr| {
+                    arr.iter()
+                        .map(|n| ActivateNode {
+                            id: n["id"].as_str().unwrap_or("").to_string(),
+                            label: n["label"].as_str().unwrap_or("").to_string(),
+                            score: n["score"].as_f64().unwrap_or(0.0),
+                        })
+                        .collect()
+                })
+                .unwrap_or_default();
+
+            let count = json["count"].as_u64().unwrap_or(nodes.len() as u64) as usize;
+
+            Ok(Json(ActivatePreviewResponse {
+                count,
+                nodes,
+                connected: true,
+            }))
+        }
+        _ => {
+            // Engram not connected — return stub indicating disconnected state
+            Ok(Json(ActivatePreviewResponse {
+                count: 0,
+                nodes: vec![],
+                connected: false,
+            }))
+        }
+    }
+}