Class: Rubycord::Permissions

Inherits:
Object
  • Object
show all
Defined in:
lib/rubycord/permissions.rb

Overview

List of permissions Discord uses

Constant Summary collapse

FLAGS =

This hash maps bit positions to logical permissions. see https://discord.com/developers/docs/topics/permissions#permissions-bitwise-permission-flags

{
  # Bit => Permission # Value
  0 => :create_instant_invite,                # 1
  1 => :kick_members,                         # 2
  2 => :ban_members,                          # 4
  3 => :administrator,                        # 8
  4 => :manage_channels,                      # 16
  5 => :manage_server,                        # 32
  6 => :add_reactions,                        # 64
  7 => :view_audit_log,                       # 128
  8 => :priority_speaker,                     # 256
  9 => :stream,                               # 512
  10 => :view_channel,                        # 1024 (which includes reading messages in text channels and joining voice channels)
  11 => :send_messages,                       # 2048
  12 => :send_tts_messages,                   # 4096
  13 => :manage_messages,                     # 8192
  14 => :embed_links,                         # 16384
  15 => :attach_files,                        # 32768
  16 => :read_message_history,                # 65536
  17 => :mention_everyone,                    # 131072
  18 => :use_external_emojis,                 # 262144
  19 => :view_server_insights,                # 524288
  20 => :connect,                             # 1048576
  21 => :speak,                               # 2097152
  22 => :mute_members,                        # 4194304
  23 => :deafen_members,                      # 8388608
  24 => :move_members,                        # 16777216
  25 => :use_vad,                             # 33554432 (voice-activity-detection in a voice channel)
  26 => :change_nickname,                     # 67108864
  27 => :manage_nicknames,                    # 134217728
  28 => :manage_roles,                        # 268435456 (roles & roles permissions)
  29 => :manage_webhooks,                     # 536870912
  30 => :manage_server_expressions,           # 1073741824 (emojis, stickers, and soundboard)
  31 => :use_application_commands,            # 2147483648 (to use application commands, including slash commands and context menu commands)
  32 => :request_to_speak,                    # 4294967296
  33 => :manage_events,                       # 8589934592
  34 => :manage_threads,                      # 17179869184
  35 => :create_public_threads,               # 34359738368 (for creating public and announcement threads)
  36 => :create_private_threads,              # 68719476736
  37 => :use_external_stickers,               # 137438953472
  38 => :send_messages_in_threads,            # 274877906944
  39 => :use_embedded_activities,             # 549755813888
  40 => :moderate_members,                    # 1099511627776
  41 => :view_creator_monetization_analytics, # 2199023255552
  42 => :use_soundboard,                      # 4398046511104
  43 => :create_server_expressions,           # 8796093022208 (for creating emojis, stickers, and soundboard sounds, and editing and deleting)
  44 => :create_events,                       # 17592186044416 (for creating scheduled events, and editing and deleting those created by the current user)
  45 => :use_external_sounds,                 # 35184372088832
  46 => :send_voice_messages,                 # 70368744177664
  49 => :send_polls,                          # 562949953421312
  50 => :use_external_apps                    # 1125899906842624
}.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bits = 0, writer = nil) ⇒ Permissions

Create a new Permissions object either as a blank slate to add permissions to (for example for Channel#define_overwrite) or from existing bit data to read out.

Examples:

Create a permissions object that could allow/deny read messages, connect, and speak by setting flags

permission = Permissions.new
permission.can_view_channel = true
permission.can_connect = true
permission.can_speak = true

Create a permissions object that could allow/deny read messages, connect, and speak by an array of symbols

Permissions.new [:view_channel, :connect, :speak]

Parameters:

  • bits (String, Integer, Array<Symbol>) (defaults to: 0) —

    The permission bits that should be set from the beginning, or an array of permission flag symbols

  • writer (RoleWriter) (defaults to: nil) —

    The writer that should be used to update data when a permission is set.



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# File 'lib/rubycord/permissions.rb', line 123

def initialize(bits = 0, writer = nil)
  @writer = writer

  @bits = if bits.is_a? Array
    self.class.bits(bits)
  else
    bits.to_i
  end

  init_vars
end

Instance Attribute Details

#bits ⇒ Object

Returns the value of attribute bits.



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# File 'lib/rubycord/permissions.rb', line 78

def bits
  @bits
end

Class Method Details

.bits(list) ⇒ Integer

Return the corresponding bits for an array of permission flag symbols. This is a class method that can be used to calculate bits instead of instancing a new Permissions object.

Examples:

Get the bits for permissions that could allow/deny read messages, connect, and speak

Permissions.bits [:view_channel, :connect, :speak] #=> 3146752

Parameters:

  • list (Array<Symbol>)

Returns:

  • (Integer) —

    the computed permissions integer



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# File 'lib/rubycord/permissions.rb', line 102

def self.bits(list)
  value = 0

  FLAGS.each do |position, flag|
    value += 2**position if list.include? flag
  end

  value
end

Instance Method Details

#==(other) ⇒ Object

Comparison based on permission bits



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# File 'lib/rubycord/permissions.rb', line 145

def ==(other)
  false unless other.is_a? Rubycord::Permissions
  bits == other.bits
end

#defined_permissions ⇒ Array<Symbol>

Return an array of permission flag symbols for this class's permissions

Examples:

Get the permissions for the bits "9"

permissions = Permissions.new(9)
permissions.defined_permissions #=> [:create_instant_invite, :administrator]

Returns:

  • (Array<Symbol>) —

    the permissions



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# File 'lib/rubycord/permissions.rb', line 140

def defined_permissions
  FLAGS.filter_map { |value, name| (@bits & (1 << value)).positive? ? name : nil }
end

#init_vars ⇒ Object

Initialize the instance variables based on the bitset.



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# File 'lib/rubycord/permissions.rb', line 88

def init_vars
  FLAGS.each do |position, flag|
    flag_set = ((@bits >> position) & 0x1) == 1
    instance_variable_set :"@#{flag}", flag_set
  end
end