[FEATURE] Separate download folders #122 (#297)

Re: Issue #122
Fetches content type from search results - displays it on thumbnails in
results grid;
Fetches content type from book id detail page (dfaults to "Other") and
uses it to construct the `final_path`.

---------

Co-authored-by: Patricia Ritter <pritter@events.com>
Co-authored-by: CaliBrain <calibrain@l4n.xyz>

testing/E2E_test.py

@@ -13,6 +13,7 @@ port = SERVER_ENV.FLASK_PORT
 server_url = f"http://localhost:{port}"
 book_title = "077484a10743e5dd5d151013e8c732f4" # "Moby Dick"
 # Directory where downloads should appear
+download_paths = SERVER_ENV.DOWNLOAD_PATHS
 download_dir = SERVER_ENV.INGEST_DIR
 # Timeout for waiting for download
 download_timeout_seconds = 60 * 5
@@ -38,7 +39,7 @@ def check_download_status(book_id):
             continue
 
         # Check success conditions based on download_path
-        for status_key in ["available", "done"]:
+        for status_key in ["available", "done", "complete"]:
             if status_key in status_data and book_id in status_data[status_key]:
                 book_status_info = status_data[status_key].get(book_id)
                 # Check if the status info is a dictionary and has a non-empty download_path
@@ -117,6 +118,12 @@ if SERVER_ENV.USE_BOOK_TITLE:
 else:
     expected_filename = f"{book_id}.epub"
 
+if book_details.get("content"):
+    content = book_details.get("content")
+    for key, path in SERVER_ENV.DOWNLOAD_PATHS.items():
+        if key in content:
+            download_dir = path
+            break
 expected_filepath = os.path.join(download_dir, expected_filename)
 
 assert os.path.exists(expected_filepath), f"Expected downloaded file not found at: {expected_filepath}"