commit 1bba6d466ae6eda679504708750bccbd35093bb0
Author: Bùi Thành Nhân <hi@imnhan.com>
Date:   Sun Mar 14 10:49:00 2021 +0700

    fix mangadex cover link
    
    It may not always have a `?` now.

diff --git a/src/mangoapi/mangadex.py b/src/mangoapi/mangadex.py
index 3d45d33..85e06e4 100644
--- a/src/mangoapi/mangadex.py
+++ b/src/mangoapi/mangadex.py
@@ -27,7 +27,10 @@ def get_title(self, title_id):
         groups_dict = {group["id"]: group["name"] for group in groups}
 
         cover = manga["mainCover"].split("/")[-1]
-        cover_ext = cover[cover.find(".") + 1 : cover.rfind("?")]
+        ext_start_index = cover.find(".") + 1
+        url_params_index = cover.rfind("?")
+        ext_end_index = url_params_index if url_params_index != -1 else None
+        cover_ext = cover[ext_start_index:ext_end_index]
 
         current_timestamp = time.time()
 
diff --git a/tests/mangoapi/test_mangadex.py b/tests/mangoapi/test_mangadex.py
index 8815031..74f3c30 100644
--- a/tests/mangoapi/test_mangadex.py
+++ b/tests/mangoapi/test_mangadex.py
@@ -88,6 +88,11 @@ def test_get_title_webtoon():
     assert title["is_webtoon"] is True
 
 
+def test_get_title_no_url_params():
+    title = Mangadex().get_title("23801")
+    assert title["cover_ext"] == "jpg"
+
+
 def test_get_chapter():
     chap = Mangadex().get_chapter("doesn't matter", "696882")
     pages = chap.pop("pages")