Waylon Bruen

Waylon Bruen

1646950080

Govkbot: Simple Go VK Bot Library

Go VK bot package

This is simple VK.com bot API.

At 2019-03-01 VK was restrict messages.send for user_tokens. This bot can work with group_token, and access to chat members if has admin rights in chat. You can use v1.0.1 also, if you need only user_token access.

It can:

  • Reply to messages (private and chat)
  • Send greetings message when invited to chat
  • Add and remove mutual friends
  • Send notifies to admin

Installatioin:

Use go mod For old Go versions you can also use go get github.com/nikepan/govkbot/v2

For work you need get VK access token with rights: messages,friends,offline (see below).

Quickstart

package main
import "github.com/nikepan/govkbot/v2"
import "log"

var VKAdminID = 3759927
var VKToken = "efjr98j9fj8jf4j958jj4985jfj9joijerf0fj548jf94jfiroefije495jf48"

func helpHandler(m *govkbot.Message) (reply string) {
  return "help received"
}

func startHandler(m *govkbot.Message) (reply govkbot.Reply) {
	keyboard := govkbot.Keyboard{Buttons: make([][]govkbot.Button, 0)}
	button := govkbot.NewButton("/help", nil)
	row := make([]govkbot.Button, 0)
	row = append(row, button)
	keyboard.Buttons = append(keyboard.Buttons, row)

	return govkbot.Reply{Msg: availableCommands, Keyboard: &keyboard}
}

func errorHandler(m *govkbot.Message, err error) {
  log.Fatal(err.Error())
}

func main() {
    //govkbot.HandleMessage("/", anyHandler)
    //govkbot.HandleMessage("/me", meHandler)
    govkbot.HandleMessage("/help", helpHandler)
    govkbot.HandleAdvancedMessage("/start", startHandler)

    //govkbot.HandleAction("chat_invite_user", inviteHandler)
    //govkbot.HandleAction("chat_kick_user", kickHandler)
    //govkbot.HandleAction("friend_add", addFriendHandler)
    //govkbot.HandleAction("friend_delete", deleteFriendHandler)

    govkbot.HandleError(errorHandler)

    govkbot.SetAutoFriend(true) // enable auto accept/delete friends

    govkbot.SetDebug(true) // log debug messages

    // Optional Direct VK API access
    govkbot.SetAPI(VKToken, "", "") // Need only before Listen, if you use direct API
    me, _ := govkbot.API.Me() // call API method
    log.Printf("current user: %+v\n", me.FullName())
    // Optional end

    govkbot.Listen(VKToken, "", "", VKAdminID)
}

Getting group token

Open group manage and select "Work with API"

Getting user token (most likely will not work for messages)

You need standalone vk app_id. You can use any app_id from https://vk.com/apps?act=wingames, for example 4775211 (Or you can create own app and get app_id on page https://vk.com/editapp?act=create (standalone app))

You can get token from you server ip with this node.js package: https://www.npmjs.com/package/vk-auth (you need login, pass and app_id)

To manual get token you need:

  1. Open in browser with logged in VK (you must use IP, where you want run bot)
 https://oauth.vk.com/authorize?client_id={{app_id}}&scope=offline,groups,messages,friends&display=page&response_type=token&redirect_uri=https://oauth.vk.com/blank.html
  1. Copy token query parameter from URL string. Token valid only for IP from what you get it.

If you receive validation check (for example, you use ip first time)

{"error":{"error_code":17,"error_msg":"Validation required: please open redirect_uri in browser ...", 
"redirect_uri":"https://m.vk.com/login?act=security_check&api_hash=Qwerty1234567890"}}

you can use https://github.com/Yashko/vk-validation-node.

Author: Nikepan
Source Code: https://github.com/nikepan/govkbot 
License: MIT License

#go #golang #bot 

What is GEEK

Buddha Community

Govkbot: Simple Go VK Bot Library
Waylon Bruen

Waylon Bruen

1646950080

Govkbot: Simple Go VK Bot Library

Go VK bot package

This is simple VK.com bot API.

At 2019-03-01 VK was restrict messages.send for user_tokens. This bot can work with group_token, and access to chat members if has admin rights in chat. You can use v1.0.1 also, if you need only user_token access.

It can:

  • Reply to messages (private and chat)
  • Send greetings message when invited to chat
  • Add and remove mutual friends
  • Send notifies to admin

Installatioin:

Use go mod For old Go versions you can also use go get github.com/nikepan/govkbot/v2

For work you need get VK access token with rights: messages,friends,offline (see below).

Quickstart

package main
import "github.com/nikepan/govkbot/v2"
import "log"

var VKAdminID = 3759927
var VKToken = "efjr98j9fj8jf4j958jj4985jfj9joijerf0fj548jf94jfiroefije495jf48"

func helpHandler(m *govkbot.Message) (reply string) {
  return "help received"
}

func startHandler(m *govkbot.Message) (reply govkbot.Reply) {
	keyboard := govkbot.Keyboard{Buttons: make([][]govkbot.Button, 0)}
	button := govkbot.NewButton("/help", nil)
	row := make([]govkbot.Button, 0)
	row = append(row, button)
	keyboard.Buttons = append(keyboard.Buttons, row)

	return govkbot.Reply{Msg: availableCommands, Keyboard: &keyboard}
}

func errorHandler(m *govkbot.Message, err error) {
  log.Fatal(err.Error())
}

func main() {
    //govkbot.HandleMessage("/", anyHandler)
    //govkbot.HandleMessage("/me", meHandler)
    govkbot.HandleMessage("/help", helpHandler)
    govkbot.HandleAdvancedMessage("/start", startHandler)

    //govkbot.HandleAction("chat_invite_user", inviteHandler)
    //govkbot.HandleAction("chat_kick_user", kickHandler)
    //govkbot.HandleAction("friend_add", addFriendHandler)
    //govkbot.HandleAction("friend_delete", deleteFriendHandler)

    govkbot.HandleError(errorHandler)

    govkbot.SetAutoFriend(true) // enable auto accept/delete friends

    govkbot.SetDebug(true) // log debug messages

    // Optional Direct VK API access
    govkbot.SetAPI(VKToken, "", "") // Need only before Listen, if you use direct API
    me, _ := govkbot.API.Me() // call API method
    log.Printf("current user: %+v\n", me.FullName())
    // Optional end

    govkbot.Listen(VKToken, "", "", VKAdminID)
}

Getting group token

Open group manage and select "Work with API"

Getting user token (most likely will not work for messages)

You need standalone vk app_id. You can use any app_id from https://vk.com/apps?act=wingames, for example 4775211 (Or you can create own app and get app_id on page https://vk.com/editapp?act=create (standalone app))

You can get token from you server ip with this node.js package: https://www.npmjs.com/package/vk-auth (you need login, pass and app_id)

To manual get token you need:

  1. Open in browser with logged in VK (you must use IP, where you want run bot)
 https://oauth.vk.com/authorize?client_id={{app_id}}&scope=offline,groups,messages,friends&display=page&response_type=token&redirect_uri=https://oauth.vk.com/blank.html
  1. Copy token query parameter from URL string. Token valid only for IP from what you get it.

If you receive validation check (for example, you use ip first time)

{"error":{"error_code":17,"error_msg":"Validation required: please open redirect_uri in browser ...", 
"redirect_uri":"https://m.vk.com/login?act=security_check&api_hash=Qwerty1234567890"}}

you can use https://github.com/Yashko/vk-validation-node.

Author: Nikepan
Source Code: https://github.com/nikepan/govkbot 
License: MIT License

#go #golang #bot 

Fannie Zemlak

Fannie Zemlak

1599854400

What's new in the go 1.15

Go announced Go 1.15 version on 11 Aug 2020. Highlighted updates and features include Substantial improvements to the Go linker, Improved allocation for small objects at high core counts, X.509 CommonName deprecation, GOPROXY supports skipping proxies that return errors, New embedded tzdata package, Several Core Library improvements and more.

As Go promise for maintaining backward compatibility. After upgrading to the latest Go 1.15 version, almost all existing Golang applications or programs continue to compile and run as older Golang version.

#go #golang #go 1.15 #go features #go improvement #go package #go new features

Elian Harber

Elian Harber

1655592960

An Elegant & Concurrent Library for The Telegram Bot API in Go

Echotron is a concurrent library for telegram bots written in pure Go.

Fetch with

go get github.com/NicoNex/echotron/v3

Design

Echotron is heavily based on concurrency: for example, every call to the Update method of each bot is executed on a different goroutine. This makes sure that, even if one instance of the bot is deadlocked, the other ones keep running just fine, making the bot work for other users without any issues and/or slowdowns.

Echotron is designed to be as similar to the official Telegram API as possible, but there are some things to take into account before starting to work with this library.

  • The methods have the exact same name, but with a capital first letter, since in Go methods have to start with a capital letter to be exported. Example: sendMessage becomes SendMessage
  • The order of the parameters in some methods is different than in the official Telegram API, so refer to the docs for the correct one.
  • The only chat_id (or, in this case, chatID) type supported is int64, instead of the "Integer or String" requirement of the official API. That's because numeric IDs can't change in any way, which isn't the case with text-based usernames.
  • In some methods, you might find a InputFile type parameter. InputFile is a struct with unexported fields, since only three combination of fields are valid, which can be obtained through the methods NewInputFileID, NewInputFilePath and NewInputFileBytes.
  • In some methods, you might find a MessageIDOptions type parameter. MessageIDOptions is another struct with unexported fields, since only two combination of field are valid, which can be obtained through the methods NewMessageID and NewInlineMessageID.
  • Optional parameters can be added by passing the correct struct to each method that might request optional parameters. If you don't want to pass any optional parameter, nil is more than enough. Refer to the docs to check for each method's optional parameters struct: it's the type of the opts parameter.
  • Some parameters are hardcoded to avoid putting random stuff which isn't recognized by the Telegram API. Some notable examples are ParseMode, ChatAction and InlineQueryType. For a full list of custom hardcoded parameters, refer to the docs for each custom type: by clicking on the type's name, you'll get the source which contains the possible values for that type.

Usage

Long Polling

A very simple implementation:

package main

import (
    "log"

    "github.com/NicoNex/echotron/v3"
)

// Struct useful for managing internal states in your bot, but it could be of
// any type such as `type bot int64` if you only need to store the chatID.
type bot struct {
    chatID int64
    echotron.API
}

const token = "YOUR TELEGRAM TOKEN"

// This function needs to be of type 'echotron.NewBotFn' and is called by
// the echotron dispatcher upon any new message from a chatID that has never
// interacted with the bot before.
// This means that echotron keeps one instance of the echotron.Bot implementation
// for each chat where the bot is used.
func newBot(chatID int64) echotron.Bot {
    return &bot{
        chatID,
        echotron.NewAPI(token),
    }
}

// This method is needed to implement the echotron.Bot interface.
func (b *bot) Update(update *echotron.Update) {
    if update.Message.Text == "/start" {
        b.SendMessage("Hello world", b.chatID, nil)
    }
}

func main() {
    // This is the entry point of echotron library.
    dsp := echotron.NewDispatcher(token, newBot)
    log.Println(dsp.Poll())
}

Functional example with bot internal states:

package main

import (
    "log"
    "strings"

    "github.com/NicoNex/echotron/v3"
)

// Recursive type definition of the bot state function.
type stateFn func(*echotron.Update) stateFn

type bot struct {
    chatID int64
    state  stateFn
    name   string
    echotron.API
}

const token = "YOUR TELEGRAM TOKEN"

func newBot(chatID int64) echotron.Bot {
    bot := &bot{
        chatID: chatID,
        API:    echotron.NewAPI(token),
    }
    // We set the default state to the bot.handleMessage method.
    bot.state = bot.handleMessage
    return bot
}

func (b *bot) Update(update *echotron.Update) {
    // Here we execute the current state and set the next one.
    b.state = b.state(update)
}

func (b *bot) handleMessage(update *echotron.Update) stateFn {
    if strings.HasPrefix(update.Message.Text, "/set_name") {
        b.SendMessage("Send me my new name!", b.chatID, nil)
        // Here we return b.handleName since next time we receive a message it
        // will be the new name.
        return b.handleName
    }
    return b.handleMessage
}

func (b *bot) handleName(update *echotron.Update) stateFn {
    b.name = update.Message.Text
    b.SendMessage(fmt.Sprintf("My new name is %q", b.name), b.chatID, nil)
    // Here we return b.handleMessage since the next time we receive a message
    // it will be handled in the default way.
    return b.handleMessage
}

func main() {
    dsp := echotron.NewDispatcher(token, newBot)
    log.Println(dsp.Poll())
}

Example with self destruction for lower RAM usage:

package main

import (
    "log"
    "time"

    "github.com/NicoNex/echotron/v3"
)

type bot struct {
    chatID int64
    echotron.API
}

const token = "YOUR TELEGRAM TOKEN"

var dsp echotron.Dispatcher

func newBot(chatID int64) echotron.Bot {
    bot := &bot{
        chatID,
        echotron.NewAPI(token),
    }
    go bot.selfDestruct(time.After(time.Hour))
    return bot
}

func (b *bot) selfDestruct(timech <- chan time.Time) {
    <-timech
    b.SendMessage("goodbye", b.chatID, nil)
    dsp.DelSession(b.chatID)
}

func (b *bot) Update(update *echotron.Update) {
    if update.Message.Text == "/start" {
        b.SendMessage("Hello world", b.chatId, nil)
    }
}

func main() {
    dsp = echotron.NewDispatcher(token, newBot)
    log.Println(dsp.Poll())
}

Webhook

package main

import "github.com/NicoNex/echotron/v3"

type bot struct {
    chatID int64
    echotron.API
}

const token = "YOUR TELEGRAM TOKEN"

func newBot(chatID int64) echotron.Bot {
    return &bot{
        chatID,
        echotron.NewAPI(token),
    }
}

func (b *bot) Update(update *echotron.Update) {
    if update.Message.Text == "/start" {
        b.SendMessage("Hello world", b.chatID, nil)
    }
}

func main() {
    dsp := echotron.NewDispatcher(token, newBot)
    dsp.ListenWebhook("https://example.com:443/my_bot_token")
}

Webhook with a custom http.Server

This is an example for a custom http.Server which handles your own specified routes and also the webhook route which is specified by ListenWebhook.

package main

import (
    "github.com/NicoNex/echotron/v3"

    "context"
    "log"
    "net/http"
)

type bot struct {
    chatID int64
    echotron.API
}

const token = "YOUR TELEGRAM TOKEN"

func newBot(chatID int64) echotron.Bot {
    return &bot{
        chatID,
        echotron.NewAPI(token),
    }
}

func (b *bot) Update(update *echotron.Update) {
    if update.Message.Text == "/start" {
        b.SendMessage("Hello world", b.chatID, nil)
    }
}

func main() {
    termChan := make(chan os.Signal, 1) // Channel for terminating the app via os.Interrupt signal
    signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM)

    mux := http.NewServeMux()
    mux.HandleFunc("/login", func(w http.ResponseWriter, r *http.Request) {
        // Handle user login
    })
    mux.HandleFunc("/logout", func(w http.ResponseWriter, r *http.Request) {
        // Handle user logout
    })
    mux.HandleFunc("/about", func(w http.ResponseWriter, r *http.Request) {
        // Tell something about your awesome telegram bot
    })

    // Set custom http.Server
    server := &http.Server{Addr: ":8080", Handler: mux}

    go func() {
        <-termChan
        // Perform some cleanup..
        if err := server.Shutdown(context.Background()); err != nil {
            log.Print(err)
        }
    }()

    // Capture the interrupt signal for app termination handling
    dsp := echotron.NewDispatcher(token, newBot)
    dsp.SetHTTPServer(server)
    // Start your custom http.Server with a registered /my_bot_token handler.
    log.Println(dsp.ListenWebhook("https://example.com/my_bot_token"))
}

Author: NicoNex
Source Code: https://github.com/NicoNex/echotron 
License: LGPL-3.0 license

#go #golang #bot #library #telegram 

Micheal Rolfson

Micheal Rolfson

1597848999

Top 8 Machine Learning Libraries In Go Language One Must Know

Created by Google researchers, Go is a popular open-source programming language. The language includes many intuitive features, including a garbage collector, cross-platform, efficient concurrency, among others.

According to the Stack Overflow Developer Survey 2020, Go language is not only the fifth most loved programming language but also fetches the programmers the third-highest salary among other languages.

Below here, we list down the top machine learning libraries in Go language.

#opinions #go language #google ml tools #machine learning libraries #ml libraries #ml libraries in go

Sival Alethea

Sival Alethea

1624410000

Create A Twitter Bot With Python

Create a Twitter bot with Python that tweets images or status updates at a set interval. The Python script also scrapes the web for data.

📺 The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=8u-zJVVVhT4&list=PLWKjhJtqVAbnqBxcdjVGgT3uVR10bzTEB&index=14
🔥 If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#python #a twitter bot #a twitter bot with python #bot #bot with python #create a twitter bot with python