112 lines
3.5 KiB
Ruby
112 lines
3.5 KiB
Ruby
# frozen_string_literal: true
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module Chat::DirectMessageChannelCreator
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class NotAllowed < StandardError
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end
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def self.create!(acting_user:, target_users:)
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Guardian.new(acting_user).ensure_can_create_direct_message!
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target_users.uniq!
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direct_messages_channel = DirectMessageChannel.for_user_ids(target_users.map(&:id))
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if direct_messages_channel
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chat_channel = ChatChannel.find_by!(chatable: direct_messages_channel)
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else
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ensure_actor_can_communicate!(acting_user, target_users)
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direct_messages_channel = DirectMessageChannel.create!(user_ids: target_users.map(&:id))
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chat_channel = direct_messages_channel.create_chat_channel!
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end
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update_memberships(acting_user, target_users, chat_channel.id)
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ChatPublisher.publish_new_channel(chat_channel, target_users)
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chat_channel
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end
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private
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def self.update_memberships(acting_user, target_users, chat_channel_id)
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sql_params = {
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acting_user_id: acting_user.id,
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user_ids: target_users.map(&:id),
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chat_channel_id: chat_channel_id,
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always_notification_level: UserChatChannelMembership::NOTIFICATION_LEVELS[:always],
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}
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DB.exec(<<~SQL, sql_params)
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INSERT INTO user_chat_channel_memberships(
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user_id,
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chat_channel_id,
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muted,
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following,
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desktop_notification_level,
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mobile_notification_level,
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created_at,
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updated_at
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)
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VALUES(
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unnest(array[:user_ids]),
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:chat_channel_id,
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false,
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false,
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:always_notification_level,
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:always_notification_level,
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NOW(),
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NOW()
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)
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ON CONFLICT (user_id, chat_channel_id) DO NOTHING;
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UPDATE user_chat_channel_memberships
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SET following = true
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WHERE user_id = :acting_user_id AND chat_channel_id = :chat_channel_id;
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SQL
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end
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def self.ensure_actor_can_communicate!(acting_user, target_users)
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# We never want to prevent the actor from communicating with themself.
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target_users = target_users.reject { |user| user.id == acting_user.id }
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screener =
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UserCommScreener.new(acting_user: acting_user, target_user_ids: target_users.map(&:id))
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# People blocking the actor.
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screener.preventing_actor_communication.each do |user_id|
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raise NotAllowed.new(
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I18n.t(
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"chat.errors.not_accepting_dms",
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username: target_users.find { |user| user.id == user_id }.username,
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),
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)
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end
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# The actor cannot start DMs with people if they are not allowing anyone
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# to start DMs with them, that's no fair!
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if screener.actor_disallowing_all_pms?
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raise NotAllowed.new(I18n.t("chat.errors.actor_disallowed_dms"))
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end
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# People the actor is blocking.
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target_users.each do |target_user|
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if screener.actor_disallowing_pms?(target_user.id)
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raise NotAllowed.new(
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I18n.t(
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"chat.errors.actor_preventing_target_user_from_dm",
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username: target_user.username,
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),
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)
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end
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if screener.actor_ignoring?(target_user.id)
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raise NotAllowed.new(
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I18n.t("chat.errors.actor_ignoring_target_user", username: target_user.username),
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)
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end
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if screener.actor_muting?(target_user.id)
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raise NotAllowed.new(
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I18n.t("chat.errors.actor_muting_target_user", username: target_user.username),
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)
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end
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end
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end
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end
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