Add endpoint handlers

backend/sync_server/src/server/fetch_latest_document_version.rs

@@ -0,0 +1,32 @@
+use crate::app_state::AppState;
+use crate::database::models::DocumentId;
+use crate::database::models::DocumentVersion;
+use crate::database::models::VaultId;
+use crate::errors::not_found_error;
+use crate::errors::server_error;
+use crate::errors::SyncServerError;
+use anyhow::anyhow;
+use axum::extract::Path;
+use axum::extract::State;
+use axum::Json;
+
+#[axum::debug_handler]
+pub async fn fetch_latest_document_version(
+    Path((vault_id, document_id)): Path<(VaultId, DocumentId)>,
+    State(state): State<AppState>,
+) -> Result<Json<DocumentVersion>, SyncServerError> {
+    let latest_version = state
+        .database
+        .get_latest_document_version(&vault_id, &document_id, None)
+        .await
+        .map_err(server_error)?
+        .map(Ok)
+        .unwrap_or_else(|| {
+            Err(not_found_error(anyhow!(
+                "Latest document version of document `{}` not found",
+                document_id
+            )))
+        })?;
+
+    Ok(Json(latest_version.into()))
+}