Extract reconcile (#85)

sync-server/src/server/fetch_document_version.rs

@@ -0,0 +1,57 @@
+use anyhow::anyhow;
+use axum::{
+    Json,
+    extract::{Path, State},
+};
+use serde::Deserialize;
+
+use crate::{
+    app_state::{
+        AppState,
+        database::models::{DocumentId, DocumentVersion, VaultId, VaultUpdateId},
+    },
+    errors::{SyncServerError, not_found_error, server_error},
+    utils::normalize::normalize,
+};
+
+#[derive(Deserialize)]
+pub struct FetchDocumentVersionPathParams {
+    #[serde(deserialize_with = "normalize")]
+    vault_id: VaultId,
+
+    document_id: DocumentId,
+    vault_update_id: VaultUpdateId,
+}
+
+#[axum::debug_handler]
+pub async fn fetch_document_version(
+    Path(FetchDocumentVersionPathParams {
+        vault_id,
+        document_id,
+        vault_update_id,
+    }): Path<FetchDocumentVersionPathParams>,
+    State(state): State<AppState>,
+) -> Result<Json<DocumentVersion>, SyncServerError> {
+    let result = state
+        .database
+        .get_document_version(&vault_id, vault_update_id, None)
+        .await
+        .map_err(server_error)?
+        .map_or_else(
+            || {
+                Err(not_found_error(anyhow!(
+                    "Document with vault update id `{vault_update_id}` not found",
+                )))
+            },
+            Ok,
+        )?;
+
+    if result.document_id != document_id {
+        return Err(not_found_error(anyhow!(
+            "Document with document id `{document_id}` does not have a version with id \
+             `{vault_update_id}`",
+        )));
+    }
+
+    Ok(Json(result.into()))
+}