95 lines
2.9 KiB
Ruby
95 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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# GroupMessage sends a private message to a group.
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# It will also avoid sending the same message repeatedly, which can happen with
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# notifications to moderators when spam is detected.
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#
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# Options:
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#
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# user: (User) If the message is about a user, pass the user object.
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# limit_once_per: (seconds) Limit sending the given type of message once every X seconds.
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# The default is 24 hours. Set to false to always send the message.
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class GroupMessage
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include Rails.application.routes.url_helpers
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RECENT_MESSAGE_PERIOD = 3.months
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def self.create(group_name, message_type, opts = {})
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GroupMessage.new(group_name, message_type, opts).create
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end
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def initialize(group_name, message_type, opts = {})
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@group_name = group_name
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@message_type = message_type
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@opts = opts
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end
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def create
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return false if sent_recently?
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post = PostCreator.create(
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Discourse.system_user,
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target_group_names: [@group_name],
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archetype: Archetype.private_message,
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subtype: TopicSubtype.system_message,
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title: I18n.t("system_messages.#{@message_type}.subject_template", message_params),
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raw: I18n.t("system_messages.#{@message_type}.text_body_template", message_params)
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)
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remember_message_sent
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post
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end
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def delete_previous!(respect_sent_recently: true, match_raw: true)
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return false if respect_sent_recently && sent_recently?
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posts = Post
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.joins(topic: { topic_allowed_groups: :group })
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.where(topic: {
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posts_count: 1,
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user_id: Discourse.system_user,
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archetype: Archetype.private_message,
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subtype: TopicSubtype.system_message,
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title: I18n.t("system_messages.#{@message_type}.subject_template", message_params),
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topic_allowed_groups: {
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groups: { name: @group_name }
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}
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})
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.where("posts.created_at > ?", RECENT_MESSAGE_PERIOD.ago)
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if match_raw
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posts = posts.where(raw: I18n.t("system_messages.#{@message_type}.text_body_template", message_params).rstrip)
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end
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posts.find_each do |post|
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PostDestroyer.new(Discourse.system_user, post).destroy
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end
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end
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def message_params
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@message_params ||= begin
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h = { base_url: Discourse.base_url }.merge(@opts[:message_params] || {})
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if @opts[:user]
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h.merge!(username: @opts[:user].username,
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user_url: user_path(@opts[:user].username))
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end
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h
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end
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end
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def sent_recently?
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return false if @opts[:limit_once_per] == false
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Discourse.redis.get(sent_recently_key).present?
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end
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# default is to send no more than once every 24 hours (24 * 60 * 60 = 86,400 seconds)
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def remember_message_sent
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Discourse.redis.setex(sent_recently_key, @opts[:limit_once_per].try(:to_i) || 86_400, 1) unless @opts[:limit_once_per] == false
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end
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def sent_recently_key
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"grpmsg:#{@group_name}:#{@message_type}:#{@opts[:user] ? @opts[:user].username : ''}"
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end
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end
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