From c94c79edacd43f4b7cc668aff17be25579e206fc Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Tue, 16 Oct 2018 11:34:44 +0200
Subject: [PATCH] Implement InlineQueryResultCachedAudio

---
 pyrogram/__init__.py                          |  2 +-
 pyrogram/client/types/__init__.py             |  2 +-
 .../bots/inline_query_result_cached_audio.py  | 88 ++++++++++++++-----
 3 files changed, 67 insertions(+), 25 deletions(-)

diff --git a/pyrogram/__init__.py b/pyrogram/__init__.py
index 00d269eb..003e835a 100644
--- a/pyrogram/__init__.py
+++ b/pyrogram/__init__.py
@@ -32,7 +32,7 @@ from .client.types import (
     Location, Message, MessageEntity, Dialog, Dialogs, Photo, PhotoSize, Sticker, Update, User,
     UserProfilePhotos, Venue, Animation, Video, VideoNote, Voice, CallbackQuery, Messages, ForceReply,
     InlineKeyboardButton, InlineKeyboardMarkup, KeyboardButton, ReplyKeyboardMarkup, ReplyKeyboardRemove,
-    InlineQuery, InlineQueryResultArticle, InlineQueryResultPhoto, InputTextMessageContent
+    InlineQuery, InlineQueryResultArticle, InlineQueryResultPhoto, InputTextMessageContent, InlineQueryResultCachedAudio
 )
 from .client import (
     Client, ChatAction, ParseMode, Emoji,
diff --git a/pyrogram/client/types/__init__.py b/pyrogram/client/types/__init__.py
index cceac77a..3f5eb39c 100644
--- a/pyrogram/client/types/__init__.py
+++ b/pyrogram/client/types/__init__.py
@@ -19,7 +19,7 @@
 from .bots import (
     CallbackQuery, ForceReply, InlineKeyboardButton, InlineKeyboardMarkup,
     KeyboardButton, ReplyKeyboardMarkup, ReplyKeyboardRemove, InlineQuery,
-    InlineQueryResultArticle, InlineQueryResultPhoto
+    InlineQueryResultArticle, InlineQueryResultPhoto, InlineQueryResultCachedAudio
 )
 from .bots import (
     ForceReply, InlineKeyboardButton, InlineKeyboardMarkup,
diff --git a/pyrogram/client/types/bots/inline_query_result_cached_audio.py b/pyrogram/client/types/bots/inline_query_result_cached_audio.py
index 3dc53982..c2e1779d 100644
--- a/pyrogram/client/types/bots/inline_query_result_cached_audio.py
+++ b/pyrogram/client/types/bots/inline_query_result_cached_audio.py
@@ -16,45 +16,87 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
-from pyrogram.api.core import Object
+import binascii
+import struct
+
+from pyrogram.api import types
+from pyrogram.api.errors import FileIdInvalid
+from pyrogram.client.ext import utils, BaseClient
+from pyrogram.client.style import HTML, Markdown
 
 
-class InlineQueryResultCachedAudio(Object):
-    """Represents a link to an mp3 audio file stored on the Telegram servers. By default, this audio file will be sent by the user. Alternatively, you can use input_message_content to send a message with the specified content instead of the audio.
-
-    Attributes:
-        ID: ``0xb0700018``
+class InlineQueryResultCachedAudio:
+    """Represents a link to an audio file stored on the Telegram servers.
+    By default, this audio file will be sent by the user. Alternatively, you can use *input_message_content* to send a
+    message with the specified content instead of the audio.
 
     Args:
-        type (``str``):
-            Type of the result, must be audio.
-
         id (``str``):
             Unique identifier for this result, 1-64 bytes.
 
         audio_file_id (``str``):
             A valid file identifier for the audio file.
 
-        caption (``str``, optional):
+        caption (``str``, *optional*):
             Caption, 0-200 characters.
 
-        parse_mode (``str``, optional):
-            Send Markdown or HTML, if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in the media caption.
+        parse_mode (``str``, *optional*):
+            Send Markdown or HTML, if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in
+            the media caption.
 
-        reply_markup (:obj:`InlineKeyboardMarkup <pyrogram.types.InlineKeyboardMarkup>`, optional):
+        reply_markup (:obj:`InlineKeyboardMarkup <pyrogram.types.InlineKeyboardMarkup>`, *optional*):
             Inline keyboard attached to the message.
 
-        input_message_content (:obj:`InputMessageContent <pyrogram.types.InputMessageContent>`, optional):
+        input_message_content (:obj:`InputMessageContent <pyrogram.types.InputMessageContent>`, *optional*):
             Content of the message to be sent instead of the audio.
 
     """
-    ID = 0xb0700018
 
-    def __init__(self, type: str, id: str, audio_file_id: str, caption: str = None, parse_mode: str = None, reply_markup=None, input_message_content=None):
-        self.type = type  # string
-        self.id = id  # string
-        self.audio_file_id = audio_file_id  # string
-        self.caption = caption  # flags.0?string
-        self.parse_mode = parse_mode  # flags.1?string
-        self.reply_markup = reply_markup  # flags.2?InlineKeyboardMarkup
-        self.input_message_content = input_message_content  # flags.3?InputMessageContent
+    def __init__(
+            self,
+            id: str,
+            audio_file_id: str,
+            caption: str = "",
+            parse_mode: str = "",
+            reply_markup=None,
+            input_message_content=None
+    ):
+        self.id = id
+        self.audio_file_id = audio_file_id
+        self.caption = caption
+        self.parse_mode = parse_mode
+        self.reply_markup = reply_markup
+        self.input_message_content = input_message_content
+
+        self.style = HTML() if parse_mode.lower() == "html" else Markdown()
+
+    def write(self):
+        try:
+            decoded = utils.decode(self.audio_file_id)
+            fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
+            unpacked = struct.unpack(fmt, decoded)
+        except (AssertionError, binascii.Error, struct.error):
+            raise FileIdInvalid from None
+        else:
+            if unpacked[0] != 9:
+                media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)
+
+                if media_type:
+                    raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
+                else:
+                    raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))
+
+        audio = types.InputDocument(
+            id=unpacked[2],
+            access_hash=unpacked[3]
+        )
+
+        return types.InputBotInlineResultDocument(
+            id=self.id,
+            type="audio",
+            document=audio,
+            send_message=types.InputBotInlineMessageMediaAuto(
+                reply_markup=self.reply_markup.write() if self.reply_markup else None,
+                **self.style.parse(self.caption)
+            )
+        )