Add hooks for comparing answers (#3855)

* Add hooks associated to compare answer feature

* Update CONTRIBUTORS

* Add type pattern to compare answer related hooks

CONTRIBUTORS

@@ -217,6 +217,7 @@ Mumtaz Hajjo Alrifai <mumtazrifai@protonmail.com>
 Thomas Graves <fate@hey.com>
 Jakub Fidler <jakub.fidler@protonmail.com>
 Valerie Enfys <val@unidentified.systems>
+Julien Chol <https://github.com/chel-ou>
 
 ********************
 

qt/aqt/reviewer.py

@@ -749,13 +749,25 @@ class Reviewer:
     def typeAnsAnswerFilter(self, buf: str) -> str:
         if not self.typeCorrect:
             return re.sub(self.typeAnsPat, "", buf)
+        m = re.search(self.typeAnsPat, buf)
+        type_pattern = m.group(1) if m else ""
         orig = buf
         origSize = len(buf)
         buf = buf.replace("<hr id=answer>", "")
         hadHR = len(buf) != origSize
-        expected = self.typeCorrect
-        provided = self.typedAnswer
+        initial_expected = self.typeCorrect
+        initial_provided = self.typedAnswer
+        expected, provided = gui_hooks.reviewer_will_compare_answer(
+            (initial_expected, initial_provided), type_pattern
+        )
+
         output = self.mw.col.compare_answer(expected, provided, self._combining)
+        output = gui_hooks.reviewer_will_render_compared_answer(
+            output,
+            initial_expected,
+            initial_provided,
+            type_pattern,
+        )
 
         # and update the type answer area
         def repl(match: Match) -> str:

qt/tools/genhooks_gui.py

@@ -100,6 +100,44 @@ hooks = [
         legacy_hook="showQuestion",
         legacy_no_args=True,
     ),
+    Hook(
+        name="reviewer_will_compare_answer",
+        args=[
+            "expected_provided_tuple: tuple[str, str]",
+            "type_pattern: str",
+        ],
+        return_type="tuple[str, str]",
+        doc="""Modify expected answer and provided answer before comparing
+
+        expected_provided_tuple is a tuple composed of:
+        - expected answer
+        - provided answer
+        type_pattern is the detail of the type tag on the card
+
+        Return a tuple composed of:
+        - modified expected answer
+        - modified provided answer
+        """,
+    ),
+    Hook(
+        name="reviewer_will_render_compared_answer",
+        args=[
+            "output: str",
+            "initial_expected: str",
+            "initial_provided: str",
+            "type_pattern: str",
+        ],
+        return_type="str",
+        doc="""Modify the output of default compare answer feature
+
+        output is the result of default compare answer function
+        initial_expected is the expected answer from the card
+        initial_provided is the answer provided during review
+        type_pattern is the detail of the type tag on the card
+
+        Return a string comparing expected and provided answers
+        """,
+    ),
     Hook(
         name="reviewer_did_show_answer",
         args=["card: Card"],