84 lines
2.4 KiB
Ruby
84 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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class Chat::ChatMessageReactor
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ADD_REACTION = :add
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REMOVE_REACTION = :remove
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MAX_REACTIONS_LIMIT = 30
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def initialize(user, chat_channel)
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@user = user
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@chat_channel = chat_channel
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@guardian = Guardian.new(user)
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end
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def react!(message_id:, react_action:, emoji:)
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@guardian.ensure_can_join_chat_channel!(@chat_channel)
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@guardian.ensure_can_react!
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validate_channel_status!
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validate_reaction!(react_action, emoji)
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message = ensure_chat_message!(message_id)
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validate_max_reactions!(message, react_action, emoji)
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reaction = nil
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ActiveRecord::Base.transaction do
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enforce_channel_membership!
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reaction = create_reaction(message, react_action, emoji)
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end
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publish_reaction(message, react_action, emoji)
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reaction
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end
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private
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def ensure_chat_message!(message_id)
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message = ChatMessage.find_by(id: message_id, chat_channel: @chat_channel)
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raise Discourse::NotFound unless message
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message
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end
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def validate_reaction!(react_action, emoji)
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if ![ADD_REACTION, REMOVE_REACTION].include?(react_action) || !Emoji.exists?(emoji)
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raise Discourse::InvalidParameters
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end
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end
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def enforce_channel_membership!
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Chat::ChatChannelMembershipManager.new(@chat_channel).follow(@user)
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end
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def validate_channel_status!
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return if @guardian.can_create_channel_message?(@chat_channel)
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raise Discourse::InvalidAccess.new(
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nil,
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nil,
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custom_message: "chat.errors.channel_modify_message_disallowed.#{@chat_channel.status}",
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)
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end
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def validate_max_reactions!(message, react_action, emoji)
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if react_action == ADD_REACTION &&
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message.reactions.count("DISTINCT emoji") >= MAX_REACTIONS_LIMIT &&
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!message.reactions.exists?(emoji: emoji)
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raise Discourse::InvalidAccess.new(
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nil,
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nil,
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custom_message: "chat.errors.max_reactions_limit_reached",
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)
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end
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end
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def create_reaction(message, react_action, emoji)
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if react_action == ADD_REACTION
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message.reactions.find_or_create_by!(user: @user, emoji: emoji)
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else
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message.reactions.where(user: @user, emoji: emoji).destroy_all
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end
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end
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def publish_reaction(message, react_action, emoji)
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ChatPublisher.publish_reaction!(@chat_channel, message, react_action, @user, emoji)
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end
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end
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