From c4362ad535ca001af9b9cb91085577dd7eb67def Mon Sep 17 00:00:00 2001
From: wulan17 <wulan17@nusantararom.org>
Date: Sat, 1 Jun 2024 14:04:45 +0700
Subject: [PATCH] pyrofork: Add blockquote expandable parser

Signed-off-by: wulan17 <wulan17@nusantararom.org>
---
 pyrogram/enums/message_entity_type.py              |  3 +++
 pyrogram/parser/html.py                            |  5 +++++
 pyrogram/parser/markdown.py                        | 14 +++++++++++++-
 .../types/messages_and_media/message_entity.py     | 14 +++++++++++++-
 4 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/pyrogram/enums/message_entity_type.py b/pyrogram/enums/message_entity_type.py
index 62ff078d..6cb1cf4e 100644
--- a/pyrogram/enums/message_entity_type.py
+++ b/pyrogram/enums/message_entity_type.py
@@ -69,6 +69,9 @@ class MessageEntityType(AutoName):
     BLOCKQUOTE = raw.types.MessageEntityBlockquote
     "Blockquote text"
 
+    EXPANDABLE_BLOCKQUOTE = raw.types.MessageEntityBlockquote
+    "collapsed-by-default block quotation"
+
     TEXT_LINK = raw.types.MessageEntityTextUrl
     "For clickable text URLs"
 
diff --git a/pyrogram/parser/html.py b/pyrogram/parser/html.py
index 7dfb5370..ed80e2ef 100644
--- a/pyrogram/parser/html.py
+++ b/pyrogram/parser/html.py
@@ -58,6 +58,7 @@ class Parser(HTMLParser):
             entity = raw.types.MessageEntityStrike
         elif tag == "blockquote":
             entity = raw.types.MessageEntityBlockquote
+            extra["collapsed"] = bool("expandable" in attrs.keys())
         elif tag == "code":
             entity = raw.types.MessageEntityCode
         elif tag == "pre":
@@ -178,6 +179,10 @@ class HTML:
                 language = getattr(entity, "language", "") or ""
                 start_tag = f'<{name} language="{language}">' if language else f"<{name}>"
                 end_tag = f"</{name}>"
+            elif entity_type == MessageEntityType.EXPANDABLE_BLOCKQUOTE:
+                name = "blockquote"
+                start_tag = f"<{name} expandable>"
+                end_tag = f"</{name}>"
             elif entity_type in (
                 MessageEntityType.CODE,
                 MessageEntityType.BLOCKQUOTE,
diff --git a/pyrogram/parser/markdown.py b/pyrogram/parser/markdown.py
index 94646768..d00e7558 100644
--- a/pyrogram/parser/markdown.py
+++ b/pyrogram/parser/markdown.py
@@ -35,6 +35,7 @@ SPOILER_DELIM = "||"
 CODE_DELIM = "`"
 PRE_DELIM = "```"
 BLOCKQUOTE_DELIM = ">"
+BLOCKQUOTE_EXPANDABLE_DELIM = "**>"
 
 MARKDOWN_RE = re.compile(r"({d})|\[(.+?)\]\((.+?)\)".format(
     d="|".join(
@@ -78,6 +79,14 @@ class Markdown:
                     result.append(line.strip())
                 else:
                     result.append(line[1:].strip())
+            elif line.startswith(BLOCKQUOTE_EXPANDABLE_DELIM):
+                if not in_blockquote:
+                    line = re.sub(r'^\*\*> ', OPENING_TAG.format("blockquote expandable"), line)
+                    line = re.sub(r'^\*\*>', OPENING_TAG.format("blockquote expandable"), line)
+                    in_blockquote = True
+                    result.append(line.strip())
+                else:
+                    result.append(line[3:].strip())
             else:
                 if in_blockquote:
                     line = CLOSING_TAG.format("blockquote") + line
@@ -174,7 +183,10 @@ class Markdown:
                 start_tag = f"{PRE_DELIM}{language}\n"
                 end_tag = f"\n{PRE_DELIM}"
             elif entity_type == MessageEntityType.BLOCKQUOTE:
-                start_tag = BLOCKQUOTE_DELIM + " "
+                if entity.collapsed:
+                    start_tag = BLOCKQUOTE_EXPANDABLE_DELIM + " "
+                else:
+                    start_tag = BLOCKQUOTE_DELIM + " "
                 end_tag = ""
                 blockquote_text = text[start:end]
                 lines = blockquote_text.split("\n")
diff --git a/pyrogram/types/messages_and_media/message_entity.py b/pyrogram/types/messages_and_media/message_entity.py
index c3f2d37d..62a3c61b 100644
--- a/pyrogram/types/messages_and_media/message_entity.py
+++ b/pyrogram/types/messages_and_media/message_entity.py
@@ -52,6 +52,9 @@ class MessageEntity(Object):
         custom_emoji_id (``int``, *optional*):
             For :obj:`~pyrogram.enums.MessageEntityType.CUSTOM_EMOJI` only, unique identifier of the custom emoji.
             Use :meth:`~pyrogram.Client.get_custom_emoji_stickers` to get full information about the sticker.
+
+        collapsed (``bool``, *optional*):
+            For :obj:`~pyrogram.enums.MessageEntityType.BLOCKQUOTE` only, whether the blockquote expandable.
     """
 
     def __init__(
@@ -64,7 +67,8 @@ class MessageEntity(Object):
         url: str = None,
         user: "types.User" = None,
         language: str = None,
-        custom_emoji_id: int = None
+        custom_emoji_id: int = None,
+        collapsed: bool = None
     ):
         super().__init__(client)
 
@@ -75,6 +79,7 @@ class MessageEntity(Object):
         self.user = user
         self.language = language
         self.custom_emoji_id = custom_emoji_id
+        self.collapsed = collapsed
 
     @staticmethod
     def _parse(client, entity: "raw.base.MessageEntity", users: dict) -> Optional["MessageEntity"]:
@@ -95,6 +100,7 @@ class MessageEntity(Object):
             user=types.User._parse(client, users.get(user_id, None)),
             language=getattr(entity, "language", None),
             custom_emoji_id=getattr(entity, "document_id", None),
+            collapsed=getattr(entity, "collapsed", None),
             client=client
         )
 
@@ -117,6 +123,12 @@ class MessageEntity(Object):
         if self.custom_emoji_id is not None:
             args["document_id"] = self.custom_emoji_id
 
+        if self.type not in [
+            enums.MessageEntityType.BLOCKQUOTE,
+            enums.MessageEntityType.EXPANDABLE_BLOCKQUOTE
+        ]:
+            args.pop("collapsed")
+
         entity = self.type.value
 
         if entity is raw.types.MessageEntityMentionName: