Maestro: A Slack-Powered Music Bot for Spotify/Ruby

Maestro

A Slack-Powered music bot for Spotify, using Sinatra and shpotify.

Getting Started

The first thing you'll need to run Maestro is a computer to run it from. It'll need to be running OSX, with homebrew installed. It'll also need Ruby, which comes pre-installed with OSX, so you should be good there. Lastly, but most importantly, this computer is the one that will be playing the music, so it'll either need good speakers, or a headphone jack to plug a sound system into.

Once you've got a computer to run it on, you can install Maestro by running the following commands in a terminal:

brew install shpotify

git clone https://github.com/smashingboxes/maestro.git
cd maestro
bundle install

Connecting to Spotify's api

shpotify needs to connect to Spotify’s API in order to find music by name. It is very likely you want this feature!

To get this to work, you first need to sign up (or into) Spotify’s developer site and [create an Application][spotify-dev]. Once you’ve done so, you can find its Client ID and Client Secret values and enter them into your shpotify config file at ${HOME}/.shpotify.cfg.

Be sure to quote your values and don’t add any extra spaces. When done, it should look like the following (but with your own values):

CLIENT_ID="abc01de2fghijk345lmnop"
CLIENT_SECRET="qr6stu789vwxyz"

Usage

ruby app.rb

This will start up Maestro on port 4567. To use it with Slack, you'll want to configure an external URL (see "Obtaining an external URL" below), and set up a slash command (see "Creating a slash command" below).

Once that's done, you can interact with it via any command shpotify supports. Here are the most common commands:

/maestro play <song name>
/maestro next
/maestro vol up
/maestro vol down
/maestro status

Configuring Slack

Obtaining an external URL

There are many ways to get an external URL or static IP. The easiest is to use ngrok:

brew cask install ngrok
ngrok http 4567

In the output, ngrok will provide you with an external url such as http://71ca42f4.ngrok.io, you'll need that for the next section.

NOTE: If ngrok gets restarted (during a computer restart, for example), a new URL will be generated. You'll need to update your slash command (created in the next section) with the new one.

Creating a slash command

To create a slash command in Slack, go to https://slack.com/apps/A0F82E8CA-slash-commands, click "Add Configuration", and fill in the following settings:

Command: "/maestro"
URL: Your external URL (from previous section), followed by /maestro. So, for example, if your ngrok url is http://71ca42f4.ngrok.io, you'd enter http://71ca42f4.ngrok.io/maestro
Method: POST
Customize Name: Maestro
Customize Icon: Any icon you'd like. Feel free to use ours
Autocomplete help text:
- Check "Show this command in the autocomplete list"
- Description: https://github.com/hnarayanan/shpotify
- Usage hint: [shpotify command]

Author: smashingboxes
Source code: https://github.com/smashingboxes/maestro

#ruby #ruby-on-rails

What is GEEK

Buddha Community

Maestro: A Slack-Powered Music Bot for Spotify/Ruby

AppClues Infotech

1616069568

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Mohammed Richards

1659564120

Maestro: A Slack-Powered Music Bot for Spotify/Ruby

Maestro

A Slack-Powered music bot for Spotify, using Sinatra and shpotify.

Getting Started

Once you've got a computer to run it on, you can install Maestro by running the following commands in a terminal:

brew install shpotify

git clone https://github.com/smashingboxes/maestro.git
cd maestro
bundle install

Connecting to Spotify's api

shpotify needs to connect to Spotify’s API in order to find music by name. It is very likely you want this feature!

Be sure to quote your values and don’t add any extra spaces. When done, it should look like the following (but with your own values):

CLIENT_ID="abc01de2fghijk345lmnop"
CLIENT_SECRET="qr6stu789vwxyz"

Usage

ruby app.rb

Once that's done, you can interact with it via any command shpotify supports. Here are the most common commands:

/maestro play <song name>
/maestro next
/maestro vol up
/maestro vol down
/maestro status

Configuring Slack

Obtaining an external URL

There are many ways to get an external URL or static IP. The easiest is to use ngrok:

brew cask install ngrok
ngrok http 4567

In the output, ngrok will provide you with an external url such as http://71ca42f4.ngrok.io, you'll need that for the next section.

NOTE: If ngrok gets restarted (during a computer restart, for example), a new URL will be generated. You'll need to update your slash command (created in the next section) with the new one.

Creating a slash command

To create a slash command in Slack, go to https://slack.com/apps/A0F82E8CA-slash-commands, click "Add Configuration", and fill in the following settings:

Command: "/maestro"
URL: Your external URL (from previous section), followed by /maestro. So, for example, if your ngrok url is http://71ca42f4.ngrok.io, you'd enter http://71ca42f4.ngrok.io/maestro
Method: POST
Customize Name: Maestro
Customize Icon: Any icon you'd like. Feel free to use ours
Autocomplete help text:
- Check "Show this command in the autocomplete list"
- Description: https://github.com/hnarayanan/shpotify
- Usage hint: [shpotify command]

Author: smashingboxes
Source code: https://github.com/smashingboxes/maestro

#ruby #ruby-on-rails

Royce Reinger

1658454960

Slack-ruby-bot: The Easiest Way to Write A Slack Bot in Ruby

Slack-Ruby-Bot

A generic Slack bot framework written in Ruby on top of slack-ruby-client. This library does all the heavy lifting, such as message parsing, so you can focus on implementing slack bot commands. It also attempts to introduce the bare minimum number of requirements or any sorts of limitations. It's a Slack bot boilerplate.

Useful to Me?

If you are just trying to send messages to Slack, use slack-ruby-client, which this library is built on top of.
If you're trying to roll out a full service with Slack button integration, check out slack-ruby-bot-server, which uses this library.
Otherwise, this piece of the puzzle will help you create a single bot instance for one team.

Stable Release

You're reading the documentation for the next release of slack-ruby-bot. Please see the documentation for the last stable release, v0.12.0 unless you're integrating with HEAD. See CHANGELOG for a history of changes and UPGRADING for how to upgrade to more recent versions.

Usage

A Minimal Bot

Gemfile

source 'https://rubygems.org'

gem 'slack-ruby-bot'
gem 'async-websocket', '~>0.8.0'

pongbot.rb

require 'slack-ruby-bot'

class PongBot < SlackRubyBot::Bot
  command 'ping' do |client, data, match|
    client.say(text: 'pong', channel: data.channel)
  end
end

PongBot.run

After registering the bot, run with SLACK_API_TOKEN=... bundle exec ruby pongbot.rb. Have the bot join a channel and send it a ping.

A Production Bot

A typical production Slack bot is a combination of a vanilla web server and a websocket application that talks to the Slack Real Time Messaging API. See our Writing a Production Bot tutorial for more information.

More Involved Examples

The following examples of bots based on slack-ruby-bot are listed in growing order of complexity.

slack-bot-on-rails: A bot running on Rails and using React to display Slack messages on a website.
slack-mathbot: Slack integration with math.
slack-google-bot: A Slack bot that searches Google, including CSE.
slack-aws: Slack integration with Amazon Web Services.
slack-deploy-bot: A Slack bot that helps you to deploy your apps.
slack-gamebot: A game bot service for ping pong, chess, etc, hosted at playplay.io.
slack-victorbot: A Slack bot to talk to the Victorops service.

Commands and Operators

Bots are addressed by name, they respond to commands and operators. You can combine multiple commands.

class CallBot < SlackRubyBot::Bot
  command 'call', '呼び出し' do |client, data, match|
    client.say(channel: data.channel, text: 'called')
  end
end

Command match data includes match['bot'], match['command'] and match['expression']. The bot match always checks against the SlackRubyBot::Config.user and SlackRubyBot::Config.user_id values obtained when the bot starts.

The command method can take strings, which will have to be escaped with Regexp.escape, and regular expressions.

class CallBot < SlackRubyBot::Bot
  command 'string with spaces', /some\s*regex+\?*/ do |client, data, match|
    client.say(channel: data.channel, text: match['command'])
  end
end

Operators are 1-letter long and are similar to commands. They don't require addressing a bot nor separating an operator from its arguments. The following class responds to =2+2.

class MathBot < SlackRubyBot::Bot
  operator '=' do |client, data, match|
    # implementation detail
  end
end

Operator match data includes match['operator'] and match['expression']. The bot match always checks against the SlackRubyBot::Config.user setting.

Threaded Messages

To reply to a message in a thread you must provide a reference to the first message that initiated the thread, which is available as either data.ts if no threaded messages have been sent, or data.thread_ts if the message being replied to is already in a thread. See message-threading for more information.

command 'reply in thread' do |client, data, match|
  client.say(
    channel: data.channel,
    text: "let's avoid spamming everyone, I will tell you what you need in this thread",
    thread_ts: data.thread_ts || data.ts
  )
end

Note that sending a message using only thread_ts: data.ts can cause some permanent issues where Slack will keep reporting inaccessible messages as unread. At the time of writing the slack team is still having problems clearing those notifications. As recommended by the slack documentation ...

A true parent's thread_ts should be used when replying. Providing a child's message ID will result in a new, detached thread breaking all context and sense.

... the replies to a thread should always be sent to the message ts that started the thread, available as thread_ts for subsequent messages. Hence data.thread_ts || data.ts.

For additional options, including broadcasting, see slack-ruby-client#chat_postMessage.

Bot Aliases

A bot will always respond to its name (eg. rubybot) and Slack ID (eg. @rubybot), but you can specify multiple aliases via the SLACK_RUBY_BOT_ALIASES environment variable or via an explicit configuration.

SLACK_RUBY_BOT_ALIASES=:pp: table-tennis

SlackRubyBot.configure do |config|
  config.aliases = [':pong:', 'pongbot']
end

This is particularly fun with emoji.

Bots will also respond to a direct message, with or without the bot name in the message itself.

Generic Routing

Commands and operators are generic versions of bot routes. You can respond to just about anything by defining a custom route.

class Weather < SlackRubyBot::Bot
  match /^How is the weather in (?<location>\w*)\?$/ do |client, data, match|
    client.say(channel: data.channel, text: "The weather in #{match[:location]} is nice.")
  end
end

You can also capture multiple matchers with scan.

class Market < SlackRubyBot::Bot
  scan(/([A-Z]{2,5})/) do |client, data, stocks|
    # lookup stock market price
  end
end

See examples/market for a working example.

Matching text in message attachments

You can respond to text in attachments with attachment. It will scan text, pretext and title fields in each attachment until a first match is found.

For example you can match this example attachment by its title with the following bot:

class Attachment < SlackRubyBot::Bot
  attachment 'Slack API Documentation' do |client, data, match|
    client.say(channel: data.channel, text: "Matched by #{match.attachment_field}.")
    client.say(channel: data.channel, text: "The attachment's text: #{match.attachment.text}.")
  end
end

You can also define which fields in attachment object should be scanned.

Scan only a single field:

class Attachment < SlackRubyBot::Bot
  attachment 'Slack API Documentation', :title do |client, data, match|
    # implementation details
  end
end

Scan multiple fields:

class Attachment < SlackRubyBot::Bot
  attachment 'Slack API Documentation', %i[text pretext author_name] do |client, data, match|
    # implementation details
  end
end

Providing description for your bot and commands

You can specify help information for bot or commands with help block, for example:

in case of bot:

class WeatherBot < SlackRubyBot::Bot
  help do
    title 'Weather Bot'
    desc 'This bot tells you the weather.'

    command 'clouds' do
      desc 'Tells you how many clouds there\'re above you.'
    end

    command 'What\'s the weather in <city>?' do
      desc 'Tells you the weather in a <city>.'
      long_desc "Accurate 10 Day Weather Forecasts for thousands of places around the World.\n" \
        'Bot provides detailed Weather Forecasts over a 10 day period updated four times a day.'
    end
  end

  # commands implementation
end

in case of your own command:

class Deploy < SlackRubyBot::Commands::Base
  help do
    title 'deploy'
    desc 'deploys your app'
    long_desc 'command format: *deploy <branch> to <env>* where <env> is production or staging'
  end
end

Customize your command help output

If you've used the help block described above to document your commands, you can provide your own implementation of outputting help for commands like so:

class Market < SlackRubyBot::Bot
  command 'help' do |client, data, match|
    user_command = match[:expression]
    help_attrs = SlackRubyBot::Commands::Support::Help.instance.find_command_help_attrs(user_command)
    client.say(channel: data.channel, text: "#{help_attrs.command_desc}\n\n#{help_attrs.command_long_desc}")
  end
end

SlackRubyBot::Commands::Base

The SlackRubyBot::Bot class is DSL sugar deriving from SlackRubyBot::Commands::Base. For more involved bots you can organize the bot implementation into subclasses of SlackRubyBot::Commands::Base manually. By default a command class responds, case-insensitively, to its name. A class called Phone that inherits from SlackRubyBot::Commands::Base responds to phone and Phone and calls the call method when implemented.

class Phone < SlackRubyBot::Commands::Base
  command 'call'

  def self.call(client, data, match)
    client.say(channel: data.channel, text: 'called')
  end
end

To respond to custom commands and to disable automatic class name matching, use the command keyword. The following command responds to call and 呼び出し (call in Japanese).

class Phone < SlackRubyBot::Commands::Base
  command 'call'
  command '呼び出し'

  def self.call(client, data, match)
    client.say(channel: data.channel, text: 'called')
  end
end

Authorization

The framework does not provide any user authentication or command authorization capability out of the box. However, the SlackRubyBot::Commands::Base class does check every command invocation for permission prior to executing the command. The default method always returns true.

Therefore, subclasses of SlackRubyBot::Commands::Base can override the permitted? private method to provide its own authorization logic. This method is intended to be exploited by user code or external gems that want to provide custom authorization logic for command execution.

class AuthorizedBot < SlackRubyBot::Commands::Base
  command 'phone home' do |client, data, match|
    client.say(channel: data.channel, text: 'Elliot!')
  end

  # Only allow user 'Uxyzabc' to run this command
  def self.permitted?(client, data, match)
    data && data.user && data.user == 'Uxyzabc'
  end
end

Animated GIFs

The SlackRubyBot::Client implementation comes with GIF support. To enable it add gem GiphyClient (official Giphy SDK) or gem giphy (older SDK, deprecated) to your Gemfile and set a Giphy key via ENV['GIPHY_API_KEY']. Obtain one from developers.giphy.com.

Note: Bots send animated GIFs in default commands and errors.

class Phone < SlackRubyBot::Commands::Base
  command 'call'

  def self.call(client, data, match)
    client.say(channel: data.channel, text: 'called', gif: 'phone')
    # Sends the text 'called' and a random GIF that matches the keyword 'phone'.
  end
end

Giphy API key is set automatically via ENV['GIPHY_API_KEY']. You can override this manually.

Giphy.configure do |config|
  config.api_key = 'key'
end

With GiphyClient you can configure the default GIF rating, which supports Y, G, PG, PG-13, and R. The default value is G.

Giphy.configure do |config|
  config.rating = 'Y' # illustrated content only, i.e. cartoons
end

If you use giphy for something else but don't want your bots to send GIFs you can set ENV['SLACK_RUBY_BOT_SEND_GIFS'] or SlackRubyBot::Config.send_gifs to false. The latter takes precedence.

SlackRubyBot.configure do |config|
  config.send_gifs = false
end

Built-In Commands

Slack-ruby-bot comes with several built-in commands. You can re-define built-in commands, normally, as described above.

[bot name]

This is also known as the default command. Shows bot version and links.

[bot name] hi

Politely says 'hi' back.

[bot name] help

Get help.

Hooks

Hooks are event handlers and respond to Slack RTM API events, such as hello or message. You can implement your own in a couple of ways:

Implementing and registering a Hook Handler

A Hook Handler is any object that respond to a call message, like a proc, instance of an object, class with a call class method, etc.

Hooks can be registered using different methods based on user preference / use case. Currently someone can use one of the following methods:

Pass hooks in SlackRubyBot::Server initialization.
Register hooks on SlackRubyBot::Server using on class method.
Register hooks on SlackRubyBot::Server using on instance method.

Hooks registration on SlackRubyBot::Server initialization

SlackRubyBot::Server.new(hook_handlers: {
  hello: MyBot::Hooks::UserChange.new,
  user_change: [->(client, data) {  }, ->(client, data) {}]
})

Hooks registration on a SlackRubyBot::Server instance

# Register an object that implements `call` method
class MyBot::Hooks::Hello
  def call(client, data)
    puts "Hello"
  end
end

server.on(:hello, MyBot::Hooks::Hello.new)

# or register a lambda function to handle the event
server.on(:hello, ->(client, data) { puts "Hello!" })

For example, the following hook handles user_change, an event sent when a team member updates their profile or data. This can be useful to update the local user cache when a user is renamed.

module MyBot
  module Hooks
    class UserChange
      def call(client, data)
        # data['user']['id'] contains the user ID
        # data['user']['name'] contains the new user name
        # ...
      end
    end
  end
end

Hooks registration on SlackRubyBot::Server class

Example:

module MyBot
  class MyServer < SlackRubyBot::Server
    on 'hello' do |client, data|
      # data['user']['id'] contains the user ID
      # data['user']['name'] contains the new user name
    end

    on 'user_change', ->(client, data) {
      # data['user']['id'] contains the user ID
      # data['user']['name'] contains the new user name
    }
  end
end

These will get pushed into the hook set on initialization.

Either by configuration, explicit assignment or hook blocks, multiple handlers can exist for the same event type.

Deprecated hook registration

Registering a hook method using hooks.add is considered deprecated and will be removed on future versions.

# [DEPRECATED]
server.hooks.add(:hello, MyBot::Hooks::UserChange.new)
server.hooks.add(:hello, ->(client, data) { puts "Hello!" })

Message Loop Protection

By default bots do not respond to their own messages. If you wish to change that behavior, set allow_message_loops to true.

SlackRubyBot.configure do |config|
  config.allow_message_loops = true
end

Logging

By default bots set a logger to $stdout with DEBUG level. The logger is used in both the RealTime and Web clients.

Silence logger as follows.

SlackRubyBot::Client.logger.level = Logger::WARN

If you wish to customize logger, set logger to your logger.

SlackRubyBot.configure do |config|
  config.logger = Logger.new("slack-ruby-bot.log", "daily")
end

Advanced Integration

You may want to integrate a bot or multiple bots into other systems, in which case a globally configured bot may not work for you. You may create instances of SlackRubyBot::Server which accepts token, aliases and send_gifs.

EM.run do
  bot1 = SlackRubyBot::Server.new(token: token1, aliases: ['bot1'])
  bot1.start_async

  bot2 = SlackRubyBot::Server.new(token: token2, send_gifs: false, aliases: ['bot2'])
  bot2.start_async
end

For an example of advanced integration that supports multiple teams, see slack-gamebot and playplay.io that is built on top of it.

Proxy Configuration

There are several proxy options that can be configured on Slack::Web::Client. You can also control what proxy options are used by modifying the http_proxy environment variable per Net::HTTP's documentation.

Note that Docker on OSX seems to incorrectly set the proxy, causing Faraday::ConnectionFailed, ERROR -- : Failed to open TCP connection to : (getaddrinfo: Name or service not known). You might need to manually unset http_proxy in that case, eg. http_proxy="" bundle exec ruby ./my_bot.rb.

Model-View-Controller Design

The command method is essentially a controller method that receives input from the outside and acts upon it. Complex behaviors could lead to a long and difficult-to-understand command block. A complex command block is a candidate for separation into classes conforming to the Model-View-Controller pattern popularized by Rails.

The library provides three helpful base classes named SlackRubyBot::MVC::Model::Base, SlackRubyBot::MVC::View::Base, and SlackRubyBot::MVC::Controller::Base.

Testing a command block is difficult. As separate classes, the Model/View/Controller's behavior can be tested via rspec or a similar tool.

Controller

The Controller is the focal point of the bot behavior. Typically the code that would go into the command block will now go into an instance method in a Controller subclass. The instance method name should match the command name exactly (case sensitive).

As an example, these two classes are functionally equivalent.

Consider the following Agent class which is the simplest default approach to take.

class Agent < SlackRubyBot::Bot
  command 'sayhello', 'alternate way to call hello' do |client, data, match|
    client.say(channel: data.channel, text: "Received command #{match[:command]} with args #{match[:expression]}")
  end
end

Using the MVC functionality, we would create a controller instead to encapsulate this function.

class MyController < SlackRubyBot::MVC::Controller::Base
  def sayhello
    client.say(channel: data.channel, text: "Received command #{match[:command]} with args #{match[:expression]}")
  end
  alternate_name :sayhello, :alternate_way_to_call_hello
end
MyController.new(MyModel.new, MyView.new)

Note in the above example that the Controller instance method sayhello does not receive any arguments. When the instance method is called, the Controller class sets up some accessor methods to provide the normal client, data, and match objects. These are the same objects passed to the command block.

However, the Controller anticipates that the model and view objects should contain business logic that will also operate on the client, data, and match objects. The controller provides access to the model and view via the model and view accessor methods. The inventory example provides a full example of a Model, View, and Controller working together.

A Controller may need helper methods for certain work. To prevent the helper method from creating a route that the bot will respond to directly, the instance method name should begin with an underscore (e.g. _my_helper_method). When building the bot routes, these methods will be skipped.

Calling alternate_name after the method definition allows for method aliases similar to the regular command structure. When commands can be triggered by multiple text strings it's useful to have that ability map to the controller methods too.

Lastly, the Controller class includes ActiveSupport::Callbacks which allows for full flexibility in creating before, after, and around hooks for all methods. Again, see the inventory example for more information.

Model

A complex bot may need to read or write data from a database or other network resource. Setting up and tearing down these connections can be costly, so the model can do it once upon instantiation.

The Model also includes ActiveSupport::Callbacks.

class MyModel < SlackRubyBot::MVC::Model::Base
  define_callbacks :sanitize
  set_callback :sanitize, :around, :sanitize_resource
  attr_accessor :_resource

  def initialize
    @db = setup_database_connection
  end

  def read(resource)
    self._resource = resource
    run_callbacks :sanitize do
      @db.select(:column1 => resource)
      # ... do some expensive work
    end
  end

  private

  def sanitize_resource
    self._resource.downcase
    result = yield
    puts "After read, result is #{result.inspect}"
  end
end

Like Controllers, the Model is automatically loaded with the latest version of the client, data, and match objects each time the controller method is called. Therefore the model will always have access to the latest objects when doing its work. It will typically only use the data and match objects.

Model methods are not matched to routes, so there is no restriction on how to name methods as there is in Controllers.

View

A typical bot just writes to a channel or uses the web client to react/unreact to a message. More complex bots will probably require more complex behaviors. These should be stored in a SlackRubyBot::MVC::View::Base subclass.

class MyView < SlackRubyBot::MVC::View::Base
  define_callbacks :logit
  set_callbacks :logit, :around, :audit_trail

  def initialize
    @mailer = setup_mailer
    @ftp = setup_ftp_handler
  end

  def email_admin(message)
    run_callbacks :logit do
      @mailer.send(:administrator, message)
    end
  end

  def react_thumbsup
    client.web_client.reactions_add(
      name: :thumbsup,
      channel: data.channel,
      timestamp: data.ts,
      as_user: true)
  end

  def react_thumbsdown
    client.web_client.reactions_remove(
      name: :thumbsup,
      channel: data.channel,
      timestamp: data.ts,
      as_user: true)
  end

  private

  def audit_trail
    Logger.audit("Sending email at [#{Time.now}]")
    yield
    Logger.audit("Email sent by [#{Time.now}]")
  end
end

Again, the View will have access to the most up to date client, data, and match objects. It will typically only use the client and data objects.

View methods are not matched to routes, so there is no restriction on how to name methods as there is in Controllers.

Testing

RSpec Shared Behaviors

Slack-ruby-bot comes with a number of shared RSpec behaviors that can be used in your RSpec tests.

behaves like a slack bot: A bot quacks like a Slack Ruby bot.
respond with slack message: The bot responds with a message.
respond with slack messages: The bot responds with a multiple messages.
respond with error: An exception is raised inside a bot command.
start typing: The bot calls client.start_typing.

Require slack-ruby-bot/rspec in your spec_helper.rb along with the following dependencies in Gemfile.

group :development, :test do
  gem 'rack-test'
  gem 'rspec'
  gem 'vcr'
  gem 'webmock'
end

Use the respond_with_slack_message matcher.

describe SlackRubyBot::Commands do
  it 'responds with any message' do
    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message
  end
  it 'says hi' do
    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message('hi')
  end
end

Use the respond_with_slack_messages matcher for multiple messages.

describe SlackRubyBot::Commands do
  it 'responds with more than one message' do
    expect(message: "#{SlackRubyBot.config.user} count").to respond_with_slack_messages
  end
  it 'says one and two' do
    expect(message: "#{SlackRubyBot.config.user} count").to respond_with_slack_messages(['one', 'two'])
  end
end

Message matchers support regular expressions.

describe SlackRubyBot::Commands do
  it 'says hi' do
    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message(/hi/)
  end
end

Check that the bot called client.start_typing(channel: 'channel').

describe SlackRubyBot::Commands do
 it 'starts typing on channel' do
    expect(message: "#{SlackRubyBot.config.user} hi").to start_typing(channel: 'channel')
  end
end

Testing Lower Level Messages

You can test client behavior at a lower level by fetching the message hook. The following example expects a bot command to call client.typing(channel: data.channel).

describe SlackRubyBot::Commands do
  let(:app) { Server.new }
  let(:client) { app.send(:client) }
  let(:message_hook) { SlackRubyBot::Hooks::Message.new }
  it 'receives a typing event' do
      expect(client).to receive(:typing)
      message_hook.call(
        client,
        Hashie::Mash.new(text: "#{SlackRubyBot.config.user} type something", channel: 'channel')
      )
    end
  end
end

Useful Libraries

newrelic-slack-ruby-bot: NewRelic instrumentation for slack-ruby-bot.

Contributing

See CONTRIBUTING.

Upgrading

See CHANGELOG for a history of changes and UPGRADING for how to upgrade to more recent versions.

If you are not familiar with Slack bots or Slack API concepts, you might want to watch this video.

Author: dblock
Source Code: https://github.com/dblock/slack-ruby-bot
License: MIT license

#ruby #bot #slack

Ajay Kapoor

1625811540

How to Create a Free Music App like Spotify? Solution Suggest

Music is something that completes our lives. Don’t you think so? Now, with the advent of technology, the physical recording has become a thing of the past. Today, 86 percent of users are listening to music using on-demand streaming services.

Did you know? According to stats, the revenue in the music streaming segment is projected to reach the United States $23,053 million by the end of 2021. It is expected to show an annual growth rate of 9.69%, resulting in an estimated market volume of US $33,372 million by 2025.

These figures show how big the music streaming market is. The demand for music has changed with the advancement of internet connection speed. And this results in the increasing popularity of music streaming apps.

With over 75 million users, Spotify is the most popular of them all. The app has a lot of users, significant revenue figures, and even paid customers. If you want to make a music app like Spotify, then this article is for you. I’ll give you a comprehensive guide on how to make an app like Spotify. You can take the help of mobile app development company in India for app development.

Read the full blog here: How to create app like spotify

#app like spotify #create app like spotify #how to create music app #how to create app like spotify #music #music-app

christian bale

1617952042

A simple process of developing music streaming app like Spotify

Spotify is a music streaming app that allows users to listen to music without downloading. Daniel Ek founded it in 2006. In 2015, its net worth was more than $5 billion. The Spotify company has received $½ billion as a fund from 17 investors. But, currently the additional amount of $500 million has been added to the fund.

Spotify is not the first one to enter the online music service industry. But, it was an innovator by implementing marketing approaches, technology, and subscriptions. Due to these, it has become the preferable music streaming app among users across 170 countries.

The success of Spotify, a music streaming service app

The growth of Spotify is skyrocketing. Let us see the net worth of Spotify now.

In 2011, the Spotify app had 2.5 million subscribers and 500,000 premium users who have registered since its partnership with Facebook’s Open Graph.

In 2012, the number of subscribers had increased and its net worth per month is $20 million.

In 2013, it had 6 million subscribers with 24 million active users. And, it has grown to 15 million subscribers with 45 million free users in 2015.

Since the user base started to rise in 2011, they announced that music streaming services would be limited to 10 hours for a month after listening to unlimited music of 6 months. Later in 2014, this limitation was removed.

In 2020, Spotify hit 155 million subscribers and its net worth is $9.5 billion.

In 2021, the revenue from the Spotify app is expected to reach $10.83 billion.

This clearly shows that the number of subscribers has increased and the app’s revenue is also increasing.

How is Spotify generating revenue?

Do you want which revenue model Spotify follows? They follow a freemium model that is the app is accessible for both free and paid users. Notably, the majority of users stream music via mobile apps.

Paid users can listen to music without any advertisements. Apart from that, premium users can access songs offline and other additional features. They offer many premium options for users. On the other hand, free users encounter ads between every five to six songs.

Also, they adopted several innovative advertising formats to make money out of their app. Available ad formats are listed below.

Audio ad
Display
Homepage takeover
Branded playlist
Sponsored session
Video takeover
Advertiser page

The success story of Spotify has inspired many entrepreneurs to start a business and jump into the online music streaming market with an app like Spotify.

How to create a music streaming app like Spotify?

Spotify clone app development empowers you to launch the app that suits your business requirements. Here is the process in brief.

Conduct market analysis

Frame your business plan by conducting market research. Also, know your target audience and competitors. This helps you to come up with unique business ideas.

Share your business plan with a mobile app development company/team

Collaborate with a mobile app development company for developing the Spotify clone app. Upon discussing your business idea with them, they help to frame a successful plan to implement.

Nowadays, apps are developed in two different methods. Developing an app from scratch is a time-consuming process and you have to invest more. On the flip side, using the Spotify clone script is beneficial. The pros of this solution are customizable, scalable, ready-to-use, time-effective, and less expensive.

Incorporate the features that are essential for the Spotify clone app development. Make the app design simple and attractive as it gets more attention from users. To make your music streaming app stand out from the other apps, integrate additional features upon analyzing the current market trends.

The robust features to consider while developing the Spotify clone app are listed below.

Individual profiles
Social media integration
Search songs
Personalized suggestions
Trending tracks
Statistics

Also, you can consider adding the following advanced features to your app.

Push notifications
Radio stations
Podcasts
Behavior tracking
Membership plans

Deploying your app

Once done with the app design and development, it is ready to deploy. Choose a platform for your app to launch. Before deployment, make sure your app is tested for technical and logical errors. If there is any, fix them and launch the bug-free Spotify clone app.

Post-launch, check the performance of your app regularly. With the collective analysis of the customer’s ratings and reviews to the app, update the version of it accordingly.

Final note

As a pioneer in mobile app development, we offer a world-class Spotify clone app solution that empowers you to start a music streaming service business.

We have 8+ years of expertise in this field. Apart from creating an error-free app, we install the app on a server with hosting capabilities. Most importantly, the source code that we have used to develop the app will be available to you after app deployment.

Associate with us for Spotify clone app development and get your music streaming app.

#spotify clone #spotify clone app #spotify clone script #spotify clone app development #spotify app clone #app like spotify