From fc91490c18d1522744e76510321f190652471f0e Mon Sep 17 00:00:00 2001
From: surdeus <surdeus@gmail.com>
Date: Sat, 19 Aug 2023 13:34:21 +0300
Subject: [PATCH] Added a global bot value to make it usable with databases
 etc.

---
 cmd/test/main.go | 13 +++++++++++++
 tg/bot.go        | 14 ++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/cmd/test/main.go b/cmd/test/main.go
index 3c8548a..917ea51 100644
--- a/cmd/test/main.go
+++ b/cmd/test/main.go
@@ -8,6 +8,10 @@ import (
 	"github.com/mojosa-software/got/tg"
 )
 
+type BotData struct {
+	Name string
+}
+
 type UserData struct {
 	Counter int
 }
@@ -158,6 +162,12 @@ var beh = tg.NewBehaviour().
 			img := tg.NewFile("media/cat.jpg").Image().Caption("A cat!")
 			c.Send(img)
 		}),
+	tg.NewCommand("botname").
+		Desc("get the bot name").
+		ActionFunc(func(c *tg.Context) {
+			bd := c.Bot.Value().(*BotData)
+			c.Sendf("My name is %q", bd.Name)
+		}),
 )
 
 func mutateMessage(fn func(string) string) tg.ActionFunc {
@@ -201,6 +211,9 @@ func main() {
 	bot = bot.
 		WithBehaviour(beh).
 		WithGroupBehaviour(gBeh).
+		WithValue(&BotData{
+			Name: "Jay",
+		}).
 		Debug(true)
 
 	log.Printf("Authorized on account %s", bot.Api.Self.UserName)
diff --git a/tg/bot.go b/tg/bot.go
index 774642b..e158340 100644
--- a/tg/bot.go
+++ b/tg/bot.go
@@ -24,6 +24,7 @@ type Bot struct {
 	channelBehaviour *ChannelBehaviour
 	sessions         SessionMap
 	groupSessions    GroupSessionMap
+	value            any
 }
 
 // Return the new bot with empty sessions and behaviour.
@@ -38,6 +39,19 @@ func NewBot(token string) (*Bot, error) {
 	}, nil
 }
 
+// Set the custom global value for the bot,
+// so it can be accessed from the callback
+// functions.
+func (bot *Bot) WithValue(v any) *Bot {
+	bot.value = v
+	return bot
+}
+
+// Get the global bot value.
+func (bot *Bot) Value() any {
+	return bot.value
+}
+
 func (bot *Bot) Debug(debug bool) *Bot {
 	bot.Api.Debug = debug
 	return bot