feat: complete Phase 4 Candidate Workflow (Confirm/Reject API)

src/api/identity_api.rs

@@ -15,10 +15,14 @@ pub fn identity_routes() -> Router<crate::api::server::AppState> {
         .route("/api/v1/people", get(list_people))
         .route("/api/v1/people/search", post(search_people))
         .route("/api/v1/people/candidates", get(list_candidates))
+        .route("/api/v1/people/{identity_id}/confirm-candidate", post(confirm_candidate))
+        .route("/api/v1/people/{identity_id}/reject-candidate", post(reject_candidate))
         .route("/api/v1/files", get(list_files))
         .route("/api/v1/files/{uuid}", get(get_file_detail))
 }
 
+// ... (Keep existing functions) ...
+
 // --- People / Identity Endpoints ---
 
 #[derive(Debug, Deserialize)]
@@ -156,6 +160,50 @@ async fn list_candidates(
     }))
 }
 
+// --- Candidate Workflow Endpoints ---
+
+#[derive(Debug, Deserialize)]
+pub struct ConfirmCandidateRequest {
+    pub pre_chunk_id: i64,
+}
+
+#[derive(Debug, Serialize)]
+pub struct ConfirmCandidateResponse {
+    pub success: bool,
+    pub message: String,
+}
+
+async fn confirm_candidate(
+    State(state): State<crate::api::server::AppState>,
+    Path(identity_id_str): Path<String>,
+    Json(req): Json<ConfirmCandidateRequest>,
+) -> Result<Json<ConfirmCandidateResponse>, (StatusCode, String)> {
+    let identity_id = Uuid::parse_str(&identity_id_str)
+        .map_err(|e| (StatusCode::BAD_REQUEST, format!("Invalid UUID: {}", e)))?;
+
+    state.db.confirm_candidate(req.pre_chunk_id, identity_id).await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(ConfirmCandidateResponse {
+        success: true,
+        message: "Candidate confirmed and linked to identity".to_string(),
+    }))
+}
+
+async fn reject_candidate(
+    State(state): State<crate::api::server::AppState>,
+    Path(_identity_id_str): Path<String>, // Unused, but consistent with route
+    Json(req): Json<ConfirmCandidateRequest>,
+) -> Result<Json<ConfirmCandidateResponse>, (StatusCode, String)> {
+    state.db.reject_candidate(req.pre_chunk_id).await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(ConfirmCandidateResponse {
+        success: true,
+        message: "Candidate rejected".to_string(),
+    }))
+}
+
 // --- Files Endpoints ---
 
 #[derive(Debug, Deserialize)]

src/core/db/postgres_db.rs

@@ -1877,6 +1877,64 @@ impl PostgresDb {
         Ok(rows)
     }
 
+    pub async fn confirm_candidate(
+        &self,
+        pre_chunk_id: i64,
+        identity_id: Uuid,
+    ) -> Result<()> {
+        // 1. Update the pre_chunk to link it to the identity
+        sqlx::query(
+            "UPDATE pre_chunks SET identity_id = $1 WHERE id = $2"
+        )
+        .bind(identity_id)
+        .bind(pre_chunk_id)
+        .execute(&self.pool)
+        .await?;
+
+        // 2. Ensure a link exists in file_identities table
+        // We need the file_uuid from the pre_chunk
+        let file_uuid: Option<Uuid> = sqlx::query_scalar(
+            "SELECT file_uuid FROM pre_chunks WHERE id = $1"
+        )
+        .bind(pre_chunk_id)
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(f_uuid) = file_uuid {
+            // Check if relationship exists
+            let exists: bool = sqlx::query_scalar(
+                "SELECT EXISTS(SELECT 1 FROM file_identities WHERE file_uuid = $1 AND identity_id = $2)"
+            )
+            .bind(f_uuid)
+            .bind(identity_id)
+            .fetch_one(&self.pool)
+            .await?;
+
+            if !exists {
+                sqlx::query(
+                    "INSERT INTO file_identities (file_uuid, identity_id, status) VALUES ($1, $2, 'detected')"
+                )
+                .bind(f_uuid)
+                .bind(identity_id)
+                .execute(&self.pool)
+                .await?;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub async fn reject_candidate(&self, pre_chunk_id: i64) -> Result<()> {
+        // Just ensure it is NULL (or maybe we mark it as ignored in metadata? For now, just NULL)
+        sqlx::query(
+            "UPDATE pre_chunks SET identity_id = NULL WHERE id = $1"
+        )
+        .bind(pre_chunk_id)
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+
     pub async fn store_chunk(&self, chunk: &Chunk) -> Result<()> {
         let table = schema::table_name("chunks");
         let content_with_rule = serde_json::json!({