discourse-legacy_links/plugin.rb

174 lines
7.2 KiB
Ruby

# plugins/discourse-legacy_links/plugin.rb
# frozen_string_literal: true
# name: discourse-legacy_links
# about: A plugin to handle legacy Gossamer Forums URLs
# version: 0.37
# authors: saint@federated.computer
# url: https://gitea.federated.computer/saint/discourse-legacy_links.git
# require 'digest'
# enabled_site_setting :discourse_legacy_links_enabled
# after_initialize do
after_initialize do
# require_dependency 'application_controller'
module ::DiscourseLegacyLinks
class Engine < ::Rails::Engine
engine_name "discourse_legacy_links"
isolate_namespace DiscourseLegacyLinks
end
# Define the custom controller, inheriting from Discourse's CustomPostController
# This gives us access to post-related functionality and user authentication
# class DiscourseLegacyLinks::CustomPostController < ::ApplicationController
class LegacyLinksController < ::ApplicationController::CustomPostController
# layout false
# Skip certain before_actions for our index method.
# This allows the route to be accessed directly via a browser
## skip_before_action :check_xhr, only: [:index]
## skip_before_action :verify_authenticity_token, only: [:index]
# skip_before_action :verify_authenticity_token
# skip_before_action :ensure_logged_in
# skip_before_action :redirect_to_login_if_required
# skip_before_action :check_xhr
# skip_before_action :ensure_staff
def index2
Rails.logger.warn "[WARN WARN WARN WARN WARN WARN WARN WARN WARN WARN AMDG JMJ PAX WARN WARN WARN WARN]"
render plain: "Test route JMJ"
# render html: '<h1>JMJ</h1>'
end
# Match URLs that include a post_id at the end or query parameter
# Main action triggered when the route is matched.
def index
Rails.logger.warn "[DEBUG] Reached the index action"
# Log all incoming parameters to see what's being passed
Rails.logger.warn "[DEBUG] Params: #{params.inspect}"
post_id = extract_post_id_from_request
if post_id
Rails.logger.warn "[DEBUG] Processing request for post_id: #{post_id}"
post = find_post_by_custom_field(post_id)
if post
# Redirect to the post URL if found
Rails.logger.warn "[DEBUG] Redirecting to post with ID: #{post.id}"
# redirect_to post_url(post)
redirect_to_post(post)
else
# Return 404 if the post is not found
Rails.logger.warn "[ERROR] Post with original_gossamer_id #{post_id} not found"
render plain: 'Post not found', status: 404
end
else
# Handle cases where the post_id cannot be extracted
Rails.logger.warn "[ERROR] Could not extract post_id from the request"
render plain: 'Invalid URL', status: 400
end
end
private
# Extracts the post ID from the request URL or query string.
# Supports various formats of legacy forum URLs.
# @return [Integer, nil] The extracted post ID or nil if not found
def extract_post_id_from_request
# Check if post_id is passed as a query parameter (?post=post_id)
if params[:post_id]
post_id = params[:post_id].to_i
Rails.logger.warn "[DEBUG] Extracted post_id from query param: #{post_id}"
return post_id
end
# Check for post_id in the URL path (e.g., /forum/.../P12345/)
if match = request.path.match(%r{/forum/[^/]+/P(\d+)/?})
post_id = match[1].to_i
Rails.logger.warn "[DEBUG] Extracted post_id from URL path: #{post_id}"
return post_id
end
# Check for post_id in the query string (e.g., ?post=12345)
if match = request.query_string.match(/post=(\d+)/)
post_id = match[1].to_i
Rails.logger.warn "[DEBUG] Extracted post_id from query string (?post=): #{post_id}"
return post_id
end
# Check for parent_post_id in the query string (e.g., ?parent_post_id=12345)
if match = request.query_string.match(/parent_post_id=(\d+)/)
post_id = match[1].to_i
Rails.logger.warn "[DEBUG] Extracted parent_post_id from query string: #{post_id}"
return post_id
end
# If no post_id was found in any format
Rails.logger.warn "[DEBUG] Could not extract post_id from request"
nil
end
# Finds the Discourse post that has the specified custom field value.
# The custom field used is 'original_gossamer_id'.
# @param post_id [Integer] The extracted Gossamer forum post ID
# @return [Post, nil] The corresponding Discourse post or nil if not found
def find_post_by_custom_field(post_id)
Rails.logger.warn "[DEBUG] Searching for post with custom field 'original_gossamer_id' and value #{post_id}"
# Use ActiveRecord query to find the post by the custom field value
post = Post.joins(:topic_custom_fields)
.where(topic_custom_fields: { name: 'original_gossamer_id', value: post_id.to_s })
.first
if post
Rails.logger.warn "[DEBUG] Found post with ID: #{post.id} for original_gossamer_id: #{post_id}"
else
Rails.logger.warn "[DEBUG] No post found for original_gossamer_id: #{post_id}"
end
post
end
# Redirects to the specified Discourse post.
# @param post [Post] The Discourse post to redirect to
def redirect_to_post(post)
topic_url = "#{Discourse.base_url}/t/#{post.topic_id}/#{post.post_number}"
Rails.logger.warn "[DEBUG] Redirecting to topic URL: #{topic_url}"
redirect topic_url
end
end
end
# Register custom routes to handle legacy URLs
Rails.logger.warn "[DEBUG DEBUG DEBUG DEBUG DEBUG WOW WOW WOW]"
# Rails.application.routes.routes.each do |route|
# Rails.logger.warn "[ROUTE] #{route.path.spec}"
# end
#
# Discourse::Application.routes.append do
# Discourse::Application.routes.prepend do
# get '/forum/*path', to: 'discourse_legacy_links/custom_post#index', constraints: lambda { |req| !Permalink.exists?(url: req.path) }
# get '/forum', to: 'discourse_legacy_links/custom_post#index', constraints: lambda { |request| Rails.logger.warn("[DEBUG] NoStarForum Route matched: #{request.path}") }
# get '/forum/*path', to: 'discourse_legacy_links/custom_post#index', constraints: lambda { |request| Rails.logger.warn("[DEBUG] StarForum Route matched: #{request.path}") }
# get '/forum2', to: 'discourse_legacy_links/custom_post#index2', constraints: lambda { |request| Rails.logger.warn("[DEBUG] NoStarTestRoute Route matched: #{request.path}") }
# get '/forum2/*path', to: 'discourse_legacy_links/custom_post#index2', constraints: lambda { |request| Rails.logger.warn("[DEBUG] StarTestRoute Route matched: #{request.path}") }
# get '/forum2' => "'discourse_legacy_links/custom_post#index2'
# get '/forum/*path' => 'discourse_legacy_links/custom_post#index'
# get '/forum' => 'discourse_legacy_links/custom_post#index'
DiscourseLegacyLinks::Engine.routes.draw do
get "/forum2" => "legacy_links#index2"
end
Discourse::Application.routes.append do
mount ::DiscourseLegacyLinks::Engine, at: "/"
end
end