discourse-import_scripts/softdeldeletedposts.rb

# Federated Computer, Inc.
# David Sainty <saint@federated.computer>  2024 A.D.
# Gossamer Threads to Discourse -- Soft Deletion of Marked-As-Deleted Posts
# v0.1 Move from destroy to soft deletion.

require 'mysql2'
require 'active_record'

# require 'concurrent-ruby'
require File.expand_path("../../../../config/environment", __FILE__)
require File.expand_path("../../../../script/import_scripts/base", __FILE__)

class GossamerForumsSoftDelDeletedPosts < ImportScripts::Base
  def initialize
    super
      begin
        # Initialize MySQL client to connect to Gossamer Forums database
        @mysql_client = Mysql2::Client.new(
          host: "slowtwitch.northend.network",
          username: "admin",
          password: "yxnh93Ybbz2Nm8#mp28zCVv",
          database: "slowtwitch"
        )
      rescue Mysql2::Error => e
        puts "Error connecting to MySQL: #{e.message}"
        exit 1
      end
  end

  # Define a method to find a post by custom field
  def find_post_by_custom_field(post_id)
    puts "SoftDelDeletedPosts: Searching for post with original_gossamer_id: #{post_id}"
  
    post_custom_field = PostCustomField.find_by(name: 'original_gossamer_id', value: post_id.to_s)
  
    if post_custom_field
      post = post_custom_field.post
      puts "SoftDelDeletedPosts: Found post with id: #{post.id}"
      post
    else
      puts "SoftDelDeletedPosts: No post found with original_gossamer_id: #{post_id}"
      nil
    end
  end

  # Soft delete the post, whether topic post (OP) or reply post
  def soft_delete_post(post, deleted_by_id)
    if post.deleted_at.nil?
      # Get the post's owner and topic information
      user = User.find_by(id: post.user_id)  # Fetch user details
      topic = Topic.find_by(id: post.topic_id)  # Fetch topic details
  
      # Display post, user, and topic information
      puts "DELETING POST: SoftDelDeletedPosts: Soft deleting post with id: #{post.id}"
      puts " - Post owner: #{user.username} (ID: #{user.id})"
      puts " - Topic title: '#{topic.title}' (Topic ID: #{topic.id})"
  
      # Perform the soft delete by updating the fields
      post.update(deleted_at: Time.now, deleted_by_id: deleted_by_id)
    else
      puts "SoftDelDeletedPosts: Post with id: #{post.id} is already soft deleted."
    end
  end

  # Define the method to delete posts based on the Gossamer Forums flag
  def soft_del_deleted_posts_from_gossamer_with_user(username)
 
    # Query the user ID from the legacy MySQL database
    user_result = @mysql_client.query("SELECT user_id FROM gforum_User WHERE user_username = '#{username}' LIMIT 1")
    user_id_row = user_result.first
    if user_id_row.nil?
      puts "DiscourseDeletedPosts: No user found with username: #{username}"
      return
    end
    user_id = user_id_row['user_id']

    # Find all posts marked as deleted by the given user
    posts_result = @mysql_client.query("SELECT post_id FROM gforum_Post WHERE post_deleted = 1 AND user_id_fk = #{user_id}")

    # "admin" user is ID 1, so set as the one performing the deletions
    deleted_by_id = 1

    posts_result.each do |legacy_post|
      post_id = legacy_post['post_id']

      # Look for the post in Discourse by custom field
      post = find_post_by_custom_field(post_id)
  
      if post
        # Soft delete only the individual post (whether topic post / OP or a reply post)
        soft_delete_post(post, deleted_by_id)
      end
    end
  end

# Define the method to reverse (soft undelete) the soft deletion
def soft_undelete_post(post)
  if post.deleted_at.present?
    # Get the post's owner and topic information
    user = User.find_by(id: post.user_id)  # Fetch user details
    topic = Topic.find_by(id: post.topic_id)  # Fetch topic details

    # Display post, user, and topic information
    puts "RESTORING POST: SoftDelDeletedPosts: Soft undeleting post with id: #{post.id}"
    puts " - Post owner: #{user.username} (ID: #{user.id})"
    puts " - Topic title: '#{topic.title}' (Topic ID: #{topic.id})"

    # Reverse the soft delete by setting deleted_at and deleted_by_id to nil
    post.update(deleted_at: nil, deleted_by_id: nil)
  else
    puts "SoftDelDeletedPosts: Post with id: #{post.id} is not soft deleted."
  end
end

# Define the method to reverse the soft deletion for all legacy posts
def soft_undelete_all_deleted_posts
  # Query the legacy database for posts marked as deleted
  posts_result = @mysql_client.query("SELECT post_id FROM gforum_Post WHERE post_deleted = 1")

  posts_result.each do |legacy_post|
    post_id = legacy_post['post_id']

    # Look for the post in Discourse by custom field
    post = find_post_by_custom_field(post_id)

    if post
      # Reverse the soft deletion (restore the post)
      soft_undelete_post(post)
    end
  end
end

  # Define the method to delete posts based on the Gossamer Forums flag
  def soft_del_all_deleted_posts

    # Find all posts marked as deleted by the given user
    posts_result = @mysql_client.query("SELECT post_id FROM gforum_Post WHERE post_deleted = 1")

    # "admin" user is ID 1, so set as the one performing the deletions
    deleted_by_id = 1

    posts_result.each do |legacy_post|
      post_id = legacy_post['post_id']

      # Look for the post in Discourse by custom field
      post = find_post_by_custom_field(post_id)

      if post
        # Soft delete only the individual post (whether topic post / OP or a reply post)
        soft_delete_post(post, deleted_by_id)
      end
    end
  end


  def perform_deleted_soft_del
    puts "Soft Del Deleted Posts beginning!"

    ## soft_del_deleted_posts_from_gossamer_with_user('spudone')

    ## soft_undelete_all_deleted_posts

    soft_del_all_deleted_posts

    puts "Soft Del Deleted Posts complete!"
  end
end

GossamerForumsSoftDelDeletedPosts.new.perform_deleted_soft_del