From 2d3e8ebbb663a95e750206bc66f309427c6750b9 Mon Sep 17 00:00:00 2001
From: bodqhrohro <bodqhrohro@gmail.com>
Date: Sun, 8 Dec 2019 17:35:27 +0200
Subject: [PATCH] Add /delete command

---
 telegram/commands.go | 43 ++++++++++++++++++++++++-------------------
 1 file changed, 24 insertions(+), 19 deletions(-)

diff --git a/telegram/commands.go b/telegram/commands.go
index 6b1ccda..8718955 100644
--- a/telegram/commands.go
+++ b/telegram/commands.go
@@ -48,7 +48,7 @@ var chatCommands = map[string]command{
 	"ban":     command{"id or @username [hours]", "restrict @username from current chat for [hours] or forever"},
 	"leave":   command{"", "leave current chat"},
 	"close":   command{"", "close current secret chat"},
-	//"delete":     command{"", "delete current chat from chat list"},
+	"delete":  command{"", "delete current chat from chat list"},
 	//"members":    command{"[query]", "search members [by optional query] in current chat (requires admin rights)"},
 }
 
@@ -113,6 +113,15 @@ func parseCommand(cmdline string) (string, []string) {
 	return bodyFields[0][1:], bodyFields[1:]
 }
 
+func (c *Client) unsubscribe(chatID int64) {
+	gateway.SendPresence(
+		c.xmpp,
+		c.jid,
+		gateway.SPFrom(strconv.FormatInt(chatID, 10)),
+		gateway.SPType("unsubscribed"),
+	)
+}
+
 func (c *Client) usernameOrIdToId(username string) (int32, error) {
 	userID, err := strconv.ParseInt(username, 10, 32)
 	// couldn't parse the id, try to lookup as a username
@@ -170,12 +179,7 @@ func (c *Client) ProcessTransportCommand(cmdline string) string {
 		}
 
 		for id := range c.cache.chats {
-			gateway.SendPresence(
-				c.xmpp,
-				c.jid,
-				gateway.SPFrom(strconv.FormatInt(id, 10)),
-				gateway.SPType("unsubscribed"),
-			)
+			c.unsubscribe(id)
 		}
 
 		c.Session.Login = ""
@@ -553,12 +557,7 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 				return err.Error(), true
 			}
 
-			gateway.SendPresence(
-				c.xmpp,
-				c.jid,
-				gateway.SPFrom(strconv.FormatInt(chatID, 10)),
-				gateway.SPType("unsubscribed"),
-			)
+			c.unsubscribe(chatID)
 		}
 	// close secret chat
 	case "close":
@@ -577,13 +576,19 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 				return err.Error(), true
 			}
 
-			gateway.SendPresence(
-				c.xmpp,
-				c.jid,
-				gateway.SPFrom(strconv.FormatInt(chatID, 10)),
-				gateway.SPType("unsubscribed"),
-			)
+			c.unsubscribe(chatID)
 		}
+	// delete current chat
+	case "delete":
+		_, err := c.client.DeleteChatHistory(&client.DeleteChatHistoryRequest{
+			ChatId:             chatID,
+			RemoveFromChatList: true,
+		})
+		if err != nil {
+			return err.Error(), true
+		}
+
+		c.unsubscribe(chatID)
 	case "help":
 		return helpString(helpTypeChat), true
 	default: