tg/cmd/test/incdec.go

package main

import (
	"surdeus.su/core/tg"
	"fmt"
)

// A simple example widget to show
// how to store and get session data values
// and working with dynamic panels.
var IncDecWidget = tg.RenderFunc(func(c tg.Context) tg.UI {
	var (
		kbd *tg.InlineCompo
		//cntMsg *tg.MessageCompo
		inline, std, onlyInc, onlyDec tg.Inline
	)

	d := ExtractSessionData(c)
	format := "Press the buttons to increment and decrement.\n" +
		"Current counter value = %d"

	incBtn := tg.Buttonf("+").WithAction(tg.Func(func(c tg.Context) {
		d.Counter++
		kbd.Text = fmt.Sprintf(format, d.Counter)
		if d.Counter == 5 {
			kbd.Inline = onlyDec
		} else {
			kbd.Inline = std
		}
		kbd.Update(c)
	}))
	decBtn := tg.Buttonf("-").WithAction(tg.Func(func(c tg.Context) {
		d.Counter--
		kbd.Text = fmt.Sprintf(format, d.Counter)
		if d.Counter == -5 {
			kbd.Inline = onlyInc
		} else {
			kbd.Inline = std
		}
		kbd.Update(c)
		//c.Sendf("%d", d.Counter)
	}))

	onlyInc = tg.NewKeyboard().Row(incBtn).Inline()
	onlyDec = tg.NewKeyboard().Row(decBtn).Inline()
	std = tg.NewKeyboard().Row(incBtn, decBtn).Inline()

	if d.Counter == 5 {
		inline = onlyDec
	} else if d.Counter == -5 {
		inline = onlyInc
	} else {
		inline = std
	}

	kbd = tg.Messagef(format, d.Counter).Inline(inline)

	return tg.UI{
		kbd,
		tg.Messagef("Use the reply keyboard to get back").Reply(
			BackKeyboard.Reply(),
		),
	}
})