searchChatMessages

Searches for messages with given words in the chat.
Returns result in reverse chronological order, i.e. in order of decreasing message_id.
Doesn't work in secret chats with non-empty query (searchSecretMessages should be used instead) or without enabled message database

Field	Type	Description
chat_id	int53	Chat identifier to search in
query	string	Query to search for
sender_user_id	int32	If not 0, only messages sent by the specified user will be returned. Doesn't supported in secret chats
from_message_id	int53	Identifier of the message from which we need a history, you can use 0 to get results from the beginning
limit	int32	Maximum number of messages to be returned, can't be greater than 100. There may be less than limit messages returned even the end of the history is not reached
filter	SearchMessagesFilter	Filter for content of searched messages