112 lines
3.2 KiB
Ruby
112 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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module Integrations
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module ChatMessage
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class BaseMessage
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RELATIVE_LINK_REGEX = %r{!\[[^\]]*\]\((/uploads/[^\)]*)\)}.freeze
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# Markup characters which are used for links in HTML, Markdown,
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# and Slack "mrkdwn" syntax (`<http://example.com|Label>`).
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UNSAFE_MARKUP_CHARACTERS = '<>[]|'
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attr_reader :markdown
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attr_reader :user_full_name
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attr_reader :user_name
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attr_reader :user_avatar
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attr_reader :project_name
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attr_reader :project_url
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def initialize(params)
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@markdown = params[:markdown] || false
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@project_name = params[:project_name] || params.dig(:project, :path_with_namespace)
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@project_url = params.dig(:project, :web_url) || params[:project_url]
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@user_full_name = params.dig(:user, :name) || params[:user_full_name]
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@user_name = params.dig(:user, :username) || params[:user_name]
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@user_avatar = params.dig(:user, :avatar_url) || params[:user_avatar]
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end
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def user_combined_name
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if user_full_name.present?
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"#{user_full_name} (#{user_name})"
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else
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user_name
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end
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end
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def summary
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return message if markdown
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format(message)
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end
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def pretext
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summary
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end
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def fallback
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format(message)
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end
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# NOTE: Make sure to call `#strip_markup` on any untrusted user input that's added to the
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# `title`, `subtitle`, `text`, `fallback`, or `author_name` fields.
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def attachments
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raise NotImplementedError
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end
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# NOTE: Make sure to call `#strip_markup` on any untrusted user input that's added to the
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# `title`, `subtitle`, `text`, `fallback`, or `author_name` fields.
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def activity
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raise NotImplementedError
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end
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private
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# NOTE: Make sure to call `#strip_markup` on any untrusted user input that's added to the string.
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def message
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raise NotImplementedError
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end
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def format(string)
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::Slack::Messenger::Util::LinkFormatter.format(format_relative_links(string))
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end
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def format_relative_links(string)
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string.gsub(RELATIVE_LINK_REGEX, "#{project_url}\\1")
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end
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# Remove unsafe markup from user input, which can be used to hijack links in our own markup,
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# or insert new ones.
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#
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# This currently removes Markdown and Slack "mrkdwn" links (keeping the link label),
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# and all HTML markup (keeping the text nodes).
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# We can't just escape the markup characters, because each chat app handles this differently.
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#
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# See:
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# - https://api.slack.com/reference/surfaces/formatting#escaping
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# - https://gitlab.com/gitlab-org/slack-notifier#escaping
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def strip_markup(string)
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string&.delete(UNSAFE_MARKUP_CHARACTERS)
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end
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def attachment_color
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'#345'
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end
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def link(text, url)
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"[#{strip_markup(text)}](#{url})"
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end
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def pretty_duration(seconds)
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parse_string =
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if duration < 1.hour
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'%M:%S'
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else
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'%H:%M:%S'
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end
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Time.at(seconds).utc.strftime(parse_string)
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end
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end
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end
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end
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