From 782b9169779ef23a2c9854f4f735ec10dc442db1 Mon Sep 17 00:00:00 2001
From: Tim-Oliver Husser <thusser@uni-goettingen.de>
Date: Sat, 11 Nov 2023 16:53:01 +0100
Subject: [PATCH] refactored a little bit

---
 .../processors/astrometry/_dotnet_request.py  |  2 +-
 .../astrometry/_dotnet_request_builder.py     | 27 +++++++++----------
 pyobs/images/processors/astrometry/dotnet.py  |  5 ++--
 3 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/pyobs/images/processors/astrometry/_dotnet_request.py b/pyobs/images/processors/astrometry/_dotnet_request.py
index b1ccdbd6..783baafc 100644
--- a/pyobs/images/processors/astrometry/_dotnet_request.py
+++ b/pyobs/images/processors/astrometry/_dotnet_request.py
@@ -31,7 +31,7 @@ def _handle_request_error(self):
         error_msg = self._generate_request_error_msg()
         raise exc.ImageError(error_msg)
 
-    def _is_request_successful(self):
+    def _is_request_successful(self) -> bool:
         return self._status_code != 200 or "error" in self._response_data
 
     async def send(self, url: str, timeout: int):
diff --git a/pyobs/images/processors/astrometry/_dotnet_request_builder.py b/pyobs/images/processors/astrometry/_dotnet_request_builder.py
index a36c8321..2b1c1c9f 100644
--- a/pyobs/images/processors/astrometry/_dotnet_request_builder.py
+++ b/pyobs/images/processors/astrometry/_dotnet_request_builder.py
@@ -1,4 +1,4 @@
-from typing import Dict, Any
+from typing import Optional
 
 import pandas as pd
 from astropy.io.fits import Header
@@ -14,17 +14,8 @@ def __init__(self, source_count: int, radius: float):
         self._radius = radius
 
         self._request_data = {}
-        self._catalog: pd.DataFrame = None
-        self._header: Header = None
-
-    def add_catalog_from_image(self, image: Image):
-        if image.catalog is None:
-            raise exc.ImageError("No catalog found in image.")
-
-        self._catalog = image.catalog[["x", "y", "flux", "peak"]].to_pandas()
-
-    def add_header_from_image(self, image: Image):
-        self._header = image.header
+        self._catalog = pd.DataFrame()
+        self._header: Optional[Header] = None
 
     def _filter_catalog(self):
         self._catalog = self._catalog.dropna(how="any")
@@ -57,13 +48,19 @@ def _build_request_data(self):
             "flux": self._catalog["flux"].tolist(),
         }
 
-    def __call__(self) -> _DotNetRequest:
+    def __call__(self, image: Image) -> _DotNetRequest:
+        # set catalog and header
+        if image.catalog is None:
+            raise exc.ImageError("No catalog found in image.")
+        self._catalog = image.catalog[["x", "y", "flux", "peak"]].to_pandas()
+        self._header = image.header
+
+        # select stars
         self._filter_catalog()
         self._validate_catalog()
         self._select_brightest_stars()
 
+        # validate header and build request
         self._validate_header()
-
         self._build_request_data()
-
         return _DotNetRequest(self._request_data)
diff --git a/pyobs/images/processors/astrometry/dotnet.py b/pyobs/images/processors/astrometry/dotnet.py
index 0d7df503..76c4d31c 100644
--- a/pyobs/images/processors/astrometry/dotnet.py
+++ b/pyobs/images/processors/astrometry/dotnet.py
@@ -44,9 +44,8 @@ def __init__(
         self._request_builder = _DotNetRequestBuilder(source_count, radius)
 
     async def _process(self, image: Image) -> Image:
-        self._request_builder.add_catalog_from_image(image)
-        self._request_builder.add_header_from_image(image)
-        request = self._request_builder()
+        # build the request
+        request = self._request_builder(image)
 
         logger = _RequestLogger(log, image, request.request_data)
         logger.log_request_data()