v0.47.1 Fix .id nil bug

Reviewed-on: #1

goss-cleanup.rb

@@ -1,5 +1,9 @@
-# v0.13
-require File.expand_path("../../../config/environment", __FILE__)
+# Federated Computer, Inc.
+# David Sainty <saint@federated.computer>  2024 A.D.
+# Gossamer Threads to Discourse -- CleanUp Script
+# v0.14 Fix for Prod-Bitnami. Prep for 20240816 run.
+
+require File.expand_path("../../../../config/environment", __FILE__)
 
 class GossamerForumsCleaner
   def cleanup_users
@@ -75,7 +79,7 @@ class GossamerForumsCleaner
 #    cleanup_messages
     cleanup_posts
     cleanup_topics
-    cleanup_categories
+#    cleanup_categories
 #    cleanup_users
     puts "Cleanup complete!"
   end

goss-delalluser-20240527.rb

@@ -1,8 +1,8 @@
 # Load the Discourse environment
-require File.expand_path("../../../config/environment", __FILE__)
+require File.expand_path("../../../../config/environment", __FILE__)
 
 # Define usernames to exclude from deletion
-excluded_usernames = ["saint", "discobot", "system"]
+excluded_usernames = ["saint", "discobot", "system","admin"]
 
 # Find all users except the excluded ones
 users_to_delete = User.where.not(username: excluded_usernames)

gossamer_forums.rb

@@ -1,7 +1,7 @@
 # Federated Computer, Inc.
 # David Sainty <saint@federated.computer>  2024 A.D.
 # Gossamer Threads to Discourse -- Migration-Import Script
-# v0.36.7 Tweak for re-running as of 20240816
+# v0.47.1 Fix .id nil bug
 
 require 'mysql2'
 require 'open-uri'
@@ -16,6 +16,10 @@ require 'time'
 
 require 'concurrent'
 
+require 'sys/proctable'
+
+require 'connection_pool'
+
 require File.expand_path("../../../../config/environment", __FILE__)
 # require_relative '../base'
 require File.expand_path("../../../../script/import_scripts/base", __FILE__)
@@ -42,7 +46,16 @@ class GossamerForumsImporter < ImportScripts::Base
   end
 
   def initialize_sqlite_id_name_url_db
-    @db = SQLite3::Database.new 'id_name_url_map.db'
+    @db = SQLite3::Database.new '/bitnami/discourse/sqlite/id_name_url_map.db'
+
+###### ONLY when we need to clear the url_map and topic_import_status .... e.g. if reimporting topics-posts from scratch
+#    @db.execute <<-SQL
+#      DROP TABLE IF EXISTS url_map;
+#    SQL
+#    @db.execute <<-SQL
+#      DROP TABLE IF EXISTS topic_import_status;
+#    SQL
+
     @db.execute <<-SQL
       CREATE TABLE IF NOT EXISTS user_id_map (
         old_user_id INTEGER PRIMARY KEY,
@@ -64,12 +77,6 @@ class GossamerForumsImporter < ImportScripts::Base
         real_name TEXT
       );
     SQL
-
-    # ONLY when we need to clear the url_map e.g. if reimporting topics-posts from scratch
-#    @db.execute <<-SQL
-#      DROP TABLE IF EXISTS url_map;
-#    SQL
-
     @db.execute <<-SQL
       CREATE TABLE IF NOT EXISTS url_map (
         old_post_id INTEGER PRIMARY KEY,
@@ -88,7 +95,6 @@ class GossamerForumsImporter < ImportScripts::Base
         topic_id INTEGER PRIMARY KEY,
         post_count INTEGER DEFAULT 0
       );
-
     SQL
     @db.execute <<-SQL
       CREATE TABLE IF NOT EXISTS user_topic_count (
@@ -126,6 +132,12 @@ class GossamerForumsImporter < ImportScripts::Base
       personal_id INTEGER
     );
     SQL
+    @db.execute <<-SQL
+    CREATE TABLE IF NOT EXISTS topic_import_status (
+      post_id INTEGER PRIMARY KEY,
+      status INTEGER DEFAULT 0
+    );
+    SQL
   end
 
   def insert_user_id_mapping(old_user_id, new_user_id)
@@ -145,7 +157,7 @@ class GossamerForumsImporter < ImportScripts::Base
   end
 
   def insert_username_mapping(old_username, new_username, email, real_name)
-    @db.execute "INSERT INTO username_map (old_username, new_username, email, real_name) VALUES (?, ?, ?, ?)", old_username, new_username, email, real_name
+    @db.execute "INSERT OR REPLACE INTO username_map (old_username, new_username, email, real_name) VALUES (?, ?, ?, ?)", old_username, new_username, email, real_name
   end
 
   # Define a method to export the username mapping table to a CSV file
@@ -164,7 +176,7 @@ class GossamerForumsImporter < ImportScripts::Base
 
   # Insert a URL mapping into the SQLite database
   def insert_url_mapping(old_post_id, new_url, title)
-    @db.execute "INSERT INTO url_map (old_post_id, new_url, title) VALUES (?, ?, ?)", [old_post_id, new_url, title]
+    @db.execute "INSERT OR REPLACE INTO url_map (old_post_id, new_url, title) VALUES (?, ?, ?)", [old_post_id, new_url, title]
   end
   
   # Export the URL mappings to a CSV file
@@ -271,11 +283,32 @@ class GossamerForumsImporter < ImportScripts::Base
     @db.execute "INSERT OR REPLACE INTO highest_processed_personal_id (id, personal_id) VALUES (1, ?)", personal_id
   end
 
+  # Check if post_id exists and its status
+  def post_status(post_id)
+    result = @db.execute("SELECT status FROM topic_import_status WHERE post_id = ?", post_id).flatten.first
+    result.nil? ? nil : result.to_i
+  end
+  
+  # Mark post_id as complete
+  def mark_post_as_complete(post_id)
+    @db.execute("INSERT OR REPLACE INTO topic_import_status (post_id, status) VALUES (?, 1)", post_id)
+  end
+
+  # Mark post_id as failed
+  def mark_post_as_failed(post_id)
+    @db.execute("INSERT OR REPLACE INTO topic_import_status (post_id, status) VALUES (?, 0)", post_id)
+  end
+
   # Execute an SQL query on the Gossamer Forums database
   def execute_query(query)
     @mysql_client.query(query, as: :hash)
   end
 
+  # Execute an SQL query on the Gossamer Forums database
+  def execute_query_concurrent(query, mysql_client)
+    mysql_client.query(query, as: :hash)
+  end
+
   # Sanitize the username to meet Discourse's requirements
   def sanitize_username(original_username, email, real_name)
 #     original_username = username
@@ -436,6 +469,7 @@ class GossamerForumsImporter < ImportScripts::Base
       upload
     rescue => e
       puts "FAILURE: Failed to upload attachment #{filename} for user_id #{user_id}: #{e.message}"
+      puts e.backtrace.join("\n")  # Print the full stack trace
       nil
     end
   end
@@ -451,14 +485,15 @@ class GossamerForumsImporter < ImportScripts::Base
       upload
     rescue => e
       puts "Failed to upload attachment #{filename} for user_id #{user_id}: #{e.message}"
+      puts e.backtrace.join("\n")  # Print the full stack trace
       nil
     end
   end
 
 
   # Helper method to handle post attachments
-  def handle_post_attachments(gossamer_post_id, post, user_id)
-    execute_query("SELECT * FROM gforum_PostAttachment WHERE post_id_fk = #{gossamer_post_id}").each do |att_row|
+  def handle_post_attachments(gossamer_post_id, post, user_id, mysql_client)
+    execute_query_concurrent("SELECT * FROM gforum_PostAttachment WHERE post_id_fk = #{gossamer_post_id}", mysql_client).each do |att_row|
       attachment_url = "https://forum.slowtwitch.com/forum/?do=post_attachment;postatt_id=#{att_row['postatt_id']}"
       puts "Handling attachment:  #{attachment_url}"
       attachment_data = download_attachment(attachment_url)
@@ -504,6 +539,7 @@ class GossamerForumsImporter < ImportScripts::Base
 #      file
 #    rescue => e
 #      puts "Failed to download file from #{url}: #{e.message}"
+#      puts e.backtrace.join("\n")  # Print the full stack trace
 #      nil
 #    end
 #  end
@@ -547,7 +583,7 @@ class GossamerForumsImporter < ImportScripts::Base
 
   # Import users from Gossamer Forums to Discourse
   def import_users
-    puts "Importing users..."
+    puts "Importing Users..."
     users = []
 
     # Fetch all users from Gossamer Forums
@@ -576,22 +612,88 @@ class GossamerForumsImporter < ImportScripts::Base
 #      insert_user_id_mapping(user[:id], user.id)
       user
     end
+  end
 
-    # For each user, add user ID mapping to SQLite now that we know what the Discourse user ID is, ... and append user bio and import user files
+  # Generate SQLite user ID mapping between Discourse and Gossamer
+  def generate_user_id_mapping
+    puts "Generating User ID Mapping..."
+    users = []
+
+    # Fetch all users from Gossamer Forums
+    execute_query("SELECT * FROM gforum_User").each do |row|
+      users << {
+        id: row['user_id'],
+        username: sanitize_username(row['user_username'], row['user_email'], row['user_real_name']),
+        email: row['user_email'],
+        created_at: Time.at(row['user_registered']),
+        updated_at: Time.at(row['user_last_seen']),
+        name: row['user_real_name'],
+        title: row['user_title'],
+        bio_raw: row['user_about'] || "",
+        website: row['user_homepage'],
+        location: row['user_location'],
+        custom_fields: {
+          md5_password: row['user_password'],
+          original_username: row['user_username'],
+          original_gossamer_id: row['user_id']
+        }
+      }
+    end
+
+    # For each user, add user ID mapping to SQLite now that we know what the Discourse user ID is
     users.each do |user|
       # discourse_username = sanitize_username(user[:username], user[:email], user[:name])
       discourse_username = user[:username]
       discourse_user = User.find_by(username: discourse_username)
 
       if discourse_user.nil?
-        puts "User #{user[:username]} --> #{discourse_username} not found in Discourse. Skipping file import."
+        puts "User #{user[:username]} --> #{discourse_username} not found in Discourse. Skipping user mapping addition."
         next
       end
 
-#      # Store the user ID mapping
+      # Store the user ID mapping
 #      @user_id_map[user[:id]] = discourse_user.id
       puts "for insert_user_id_mapping:   user[:id]  #{user[:id]}  discourse_user.id  #{discourse_user.id}"
       insert_user_id_mapping(user[:id], discourse_user.id)
+    end
+  end
+
+  # Import and set user Bio and Images
+  def set_user_bio_images
+    puts "Setting User Bio and Images..."
+    users = []
+
+    # Fetch all users from Gossamer Forums
+    execute_query("SELECT * FROM gforum_User").each do |row|
+      users << {
+        id: row['user_id'],
+        username: sanitize_username(row['user_username'], row['user_email'], row['user_real_name']),
+        email: row['user_email'],
+        created_at: Time.at(row['user_registered']),
+        updated_at: Time.at(row['user_last_seen']),
+        name: row['user_real_name'],
+        title: row['user_title'],
+        bio_raw: row['user_about'] || "",
+        website: row['user_homepage'],
+        location: row['user_location'],
+        custom_fields: {
+          md5_password: row['user_password'],
+          original_username: row['user_username'],
+          original_gossamer_id: row['user_id']
+        }
+      }
+      end
+
+    # For each user, append user bio and import user files
+    users.each do |user|
+      # discourse_username = sanitize_username(user[:username], user[:email], user[:name])
+      discourse_username = user[:username]
+      discourse_user = User.find_by(username: discourse_username)
+
+      if discourse_user.nil?
+        puts "User #{user[:username]} --> #{discourse_username} not found in Discourse. Skipping bio-image setting."
+        next
+      end
 
       # Ensure user profile exists and bio_raw is a string
       discourse_user.user_profile ||= UserProfile.new(user_id: discourse_user.id)
@@ -656,6 +758,7 @@ class GossamerForumsImporter < ImportScripts::Base
       png_path if File.exist?(png_path)
     rescue => e
       puts "Failed to convert image #{file_path}: #{e.message}"
+      puts e.backtrace.join("\n")  # Print the full stack trace
       nil
     end
   end
@@ -668,6 +771,7 @@ class GossamerForumsImporter < ImportScripts::Base
       resized_path if File.exist?(resized_path)
     rescue => e
       puts "Failed to resize image #{file_path}: #{e.message}"
+      puts e.backtrace.join("\n")  # Print the full stack trace
       nil
     end
   end
@@ -759,6 +863,7 @@ class GossamerForumsImporter < ImportScripts::Base
         FileUtils.copy_file(resized_image_path, resized_temp_file.path)
       rescue => e
         puts "Skipping image due to resize failure: #{temp_file.path}"
+        puts e.backtrace.join("\n")  # Print the full stack trace
         temp_file.close
         temp_file.unlink
         next
@@ -927,50 +1032,444 @@ class GossamerForumsImporter < ImportScripts::Base
     result ? result['post_views'] : 0
   end
 
-  #THREADING OUTLINE HERE --------------------------------------------
+########## THREADING START --------------------------------------------
 
+  # Method to dynamically calculate the optimal thread pool size based on system load
+  def calculate_dynamic_pool_size
+    # Fetch current CPU load average using Sys::ProcTable.loadavg
+    # load_avg = Sys::ProcTable.loadavg.last # Get the 15-minute load average
+    # load_avg = Sys::ProcTable.loadavg
+    load_avg = File.read('/proc/loadavg').split
+  
+    # Calculate the pool size based on the load average
+    # Adjust the multiplier and threshold as needed
+    # pool_size = [(Concurrent.processor_count / (load_avg + 0.1)).to_i, 1].max
+
+    # Extract the 1-minute load average from the fetched data
+    one_minute_load_avg = load_avg[0].to_f
+
+    # Determine how many logical CPU cores are available on the system
+    cpu_count = Concurrent.processor_count
+
+    # Log the current load and CPU information for debugging and monitoring purposes
+    puts "1-minute Load Average: #{one_minute_load_avg}, CPU Count: #{cpu_count}"
+
+    # Calculate the initial pool size based on the ratio of the 1-minute load average to the number of CPUs
+    # This ratio gives an idea of how many threads should be running to efficiently utilize the CPU resources
+    initial_pool_size = (cpu_count / one_minute_load_avg).ceil
+
+    # Ensure the pool size is at least 1 to avoid creating a pool with zero threads
+    initial_pool_size = 1 if initial_pool_size < 1
+
+    # Cap the maximum pool size to twice the number of CPUs
+    # This prevents overloading the system with too many threads, which could lead to diminishing returns
+    max_pool_size = cpu_count * 2
+
+    # Adjust the final pool size to be within the valid range (1 to max_pool_size)
+    pool_size = [[initial_pool_size, max_pool_size].min, 1].max
+  
+    puts "Calculated and adjusted dynamic pool size: #{pool_size}" # Log the dynamically adjusted pool size
+    pool_size
+  end
+
+  # Get list of TOPICS / OP posts, i.e. post ids that have no parent / root id - SELECT post_id FROM gforum_Post WHERE post_root_id = 0;
   def threaded_topic_import
-    # Get list of IDS that have no parent ID - SELECT post_id FROM gforum_Post WHERE post_root_id = 0;
-    parent_post_ids = execute_query("SELECT post_id FROM gforum_Post WHERE post_root_id = 0")
 
-    parent_post_count = parent_post_ids.count
-    batch_size = 100 #set our batch size
-    current_post_batch = 0 #set our current batch number
-    is_complete = false
+    # Use CachedThreadPool for dynamic thread management
+####    pool = Concurrent::CachedThreadPool.new
+    pool = Concurrent::FixedThreadPool.new(7)
 
-    until is_complete
-      # Query in batches, create pool, wait for termination, do it again
-      # SELECT post_id FROM gforum_Post WHERE post_root_id = 0 ORDER BY post_id  
-      current_post_batch_max = current_post_batch + batch_size
-      pool = Concurrent::FixedThreadPool.new(Concurrent.processor_count) #create thread pool that is bounded by processors avaialable, however play with the number to see what works best
-
-      while current_post_batch < current_post_batch_max
-        post_id = parent_post_ids[current_post_batch]
-        pool.post do
-          topic_import_job(post_id)
-        end
-        current_post_batch += 1
-        break if current_post_batch >= parent_post_count
-      end
-      
-      pool.shutdown
-      pool.wait_for_termination
-
-      if current_post_batch >= parent_post_count
-        is_complete = true
-      end
+    # Define the connection pool inside the method
+    mariadb_pool = ConnectionPool.new(size: 14, timeout: 100) do
+      Mysql2::Client.new(
+        host: "slowtwitch.northend.network",
+        username: "admin",
+        password: "yxnh93Ybbz2Nm8#mp28zCVv",
+        database: "slowtwitch"
+      )
     end
+
+    # The query selects post_ids from gforum_Post where post_root_id is 0, meaning these posts are the topic starters (OPs).
+    # Execute the query and fetch the result
+    # result = execute_query("SELECT post_id FROM gforum_Post WHERE post_root_id = 0 ORDER BY post_id ASC")
+    result = execute_query("SELECT post_id FROM gforum_Post WHERE post_root_id = 0 ORDER BY post_id ASC")
+
+    # Convert the result set to an array of post_ids
+    parent_post_ids = result.map { |row| row['post_id'] }
+
+#    parent_post_count = parent_post_ids.count
+    batch_size = 10 # Set our batch size for number of posts to import in a single batch
+
+####    current_post_batch = 0 # Set our current batch number. This tracks the current batch of posts being processed.
+
+    is_complete = false # Flag to indicate whether the import process is complete.
+
+    # Mutex to control access to shared resources
+    ###   mutex = Mutex.new      # Mutex for MySQL2 operations  --  disabled as this may not in fact be necessary - TBD.
+    sqlite_mutex = Mutex.new  # Mutex for SQLite opreations
+
+    # Run until all posts have been processed.
+    until is_complete
+
+#    puts "QQ 11 --  GETTING NEXT BATCH ****************************************"
+####       # Query in batches, create pool, wait for termination, do it again
+####      current_post_batch_max = current_post_batch + batch_size
+
+      # Get the next batch of posts
+      current_post_batch = parent_post_ids.shift(batch_size)
+
+      break if current_post_batch.empty?
+
+      # Process each post in the current batch
+      current_post_batch.each do |post_id|
+#    puts "QQ 22 --  #{post_id}"
+
+
+#######    # Static pool size based on number of CPUs
+#      # pool = Concurrent::FixedThreadPool.new(Concurrent.processor_count) # Create a thread pool that is bounded by processors avaialable
+#      # pool = Concurrent::FixedThreadPool.new(8)                          # Create a thread pool of 8 pool members
+
+####      # Dynamically calculate the pool size based on system load to optimise performance
+####      pool_size = calculate_dynamic_pool_size            # Dynamically calculate what the pool size "ought" to be.
+####      pool = Concurrent::FixedThreadPool.new(pool_size)  # Create a thread pool with the calculated size
+
+####      # Process each post in the current batch
+####      while current_post_batch < current_post_batch_max
+####        post_id = parent_post_ids[current_post_batch]  # Fetch the post_id for the current post
+
+####        # Check if the post has already been processed or is incomplete
+####        post_status = post_status(post_id)
+  
+      # Submit the import job for the current post_id to the thread pool
+        pool.post do
+          # Initialise a new MariaDB / Mysql2 client inside of each thread
+####          mysql_client = Mysql2::Client.new(
+####            host: "slowtwitch.northend.network",
+####            username: "admin",
+####            password: "yxnh93Ybbz2Nm8#mp28zCVv",
+####            database: "slowtwitch"
+####          )
+####    puts "PP 22 --  #{post_id}"
+
+          mariadb_pool.with do |mysql_client|
+            begin
+
+              # Ensure the connection is active, otherwise reconnect
+              puts "PP 11 --  #{post_id} -- Checking MySQL connections status.."
+              mysql_client.ping || mysql_client = Mysql2::Client.new(
+                host: "slowtwitch.northend.network",
+                username: "admin",
+                password: "yxnh93Ybbz2Nm8#mp28zCVv",
+                database: "slowtwitch"
+              )
+####    puts "    FIRST Checking MySQL connection status..."
+####    if mysql_client.query('SELECT 1').nil?
+####      puts "    MySQL connection is not valid"
+####    else
+####      puts "    MySQL connection is valid"
+####    end
+
+              # Use connection pooling for PostgreSQL and synchronize access to shared resources
+              ActiveRecord::Base.connection_pool.with_connection do
+                post_status = post_status(post_id)
+                if post_status.nil? || post_status == 0
+                  puts "Starting import for post_id #{post_id}"
+                  topic_import_job(post_id, sqlite_mutex, mysql_client)  # Import topic and its replies
+                  sqlite_mutex.synchronize do
+                    mark_post_as_complete(post_id)  # Mark as complete in SQLite table
+                  end
+                else
+                  puts "Skipping post_id #{post_id}, already processed."
+                end
+              end
+            rescue => e
+              puts "Error processing post ID #{post_id}: #{e.message}"
+              puts e.backtrace.join("\n")  # Print the full stack trace
+              sqlite_mutex.synchronize do
+                mark_post_as_failed(post_id)
+              end
+              if e.message =~ /MySQL client is not connected/
+                puts "Reconnecting to MySQL for post ID #{post_id} due to connection loss..."
+                retry
+              end
+####            ensure
+####            # Ensure the MariaDB connection is closed after processing
+####            mysql_client.close if mysql_client
+####            puts "** CLOSED MariaDB client"
+####    puts "PP 22 --  #{post_id}"
+####    puts "    FINAL Checking MySQL connection status..."
+####    if mysql_client.query('SELECT 1').nil?
+####      puts "    MySQL connection is not valid"
+####    else
+####      puts "    MySQL connection is valid"
+####    end
+            end
+          end
+        end
+      end
+
+####        current_post_batch += 1  # Increment, moving to next post in the batch
+####        break if current_post_batch >= parent_post_count
+
+      # Check if all posts have been processed
+####      is_complete = true if current_post_batch >= parent_post_count
+      is_complete = parent_post_ids.empty?
+    end
+
+    # Wait for all jobs in the current batch to finish before proceeding
+    puts "PP 33 --  Ready for shutdown"
+    pool.shutdown  # Initiate thread pool shutdown after all jobs submitted
+    puts "PP 44 --  Now wait for termination"
+    pool.wait_for_termination  # Wait for all threads to finish exec
+
   end
 
-  def topic_import_job(post_id)
-    #Here is where you can import the entire topic
-    #Get post -- SELECT post_id, user_id_fk, forum_id_fk, post_root_id, post_subject, post_time, post_message, post_father_id, post_replies FROM gforum_Post WHERE post_id = post_id
-    #check if exists, create if not
-    #get children, create -- SELECT post_id, user_id_fk, forum_id_fk, post_root_id, post_subject, post_time, post_message, post_father_id, post_replies FROM gforum_Post WHERE post_root_id = post_id
-    #this parts needs to be synchronously to avoid race conditions
+#  # Method to ensure thread-safe updates to highest_processed_post_id
+#  def update_highest_processed_post_id_thread_safe(post_id)
+#    @highest_processed_mutex ||= Mutex.new
+#    @highest_processed_mutex.synchronize do
+#      if post_id > fetch_highest_processed_post_id
+#        update_highest_processed_post_id(post_id)
+#      end
+#    end
+#  end
+
+  # Method to import an entire topic, including its first post and all subsequent replies
+  def topic_import_job(post_id, sqlite_mutex, mysql_client)
+#####  def topic_import_job(post_id, sqlite_mutex)
+    puts "TIJ ZZ post_id #{post_id}"
+#####    mysql_client = Mysql2::Client.new(
+#####      host: "slowtwitch.northend.network",
+#####      username: "admin",
+#####      password: "yxnh93Ybbz2Nm8#mp28zCVv",
+#####      database: "slowtwitch"
+#####    )
+    puts "    FIRST Checking MySQL connection status..."
+    if mysql_client.query('SELECT 1').nil?
+      puts "    MySQL connection is not valid, TRY TO RECONNECT II"
+      mysql_client.ping || mysql_client = Mysql2::Client.new(
+        host: "slowtwitch.northend.network",
+        username: "admin",
+        password: "yxnh93Ybbz2Nm8#mp28zCVv",
+        database: "slowtwitch"
+      )
+    else
+      puts "    MySQL connection is valid"
+    end
+    puts "TIJ AA post_id #{post_id}"
+    # Fetch the post data for the given post_id (this is the first post in the topic)
+    row = execute_query_concurrent("SELECT post_id, user_id_fk, forum_id_fk, post_root_id, post_subject, post_time, post_message, post_father_id, post_replies FROM gforum_Post WHERE post_id = #{post_id}", mysql_client).first
+  
+    puts "TIJ BB post_id #{post_id}"
+    # Early return if the post data is not found
+    return unless row
+  
+    puts "TIJ CC post_id #{post_id}"
+    # Extract key values from the fetched row
+    post_id = row['post_id'].to_i
+    puts "Processing post_id #{row['post_id']} post_root_id #{row['post_root_id']} post_subject/title #{row['post_subject']} forum_id_fk/category_id #{row['forum_id_fk']}"
+  
+    # Fetch the mapped Discourse user and category ID based on Gossamer data
+    discourse_user_id = fetch_user_id_mapping(row['user_id_fk'])
+    discourse_category_id = fetch_category_id_mapping(row['forum_id_fk'])
+    puts "discourse_user_id #{discourse_user_id} discourse_category_id #{discourse_category_id}"
+    return unless discourse_user_id && discourse_category_id
+  
+    puts "TIJ DD post_id #{post_id}"
+    # Ensure the topic title is valid and generate a unique title if needed
+    title = ensure_valid_title(row['post_subject'])
+    unique_title = title
+  
+    # Fetch the number of views the post has had
+    post_views = fetch_post_views(row['post_id'])
+  
+    # Check if the topic has already been imported using the custom field 'original_gossamer_id'
+    unless TopicCustomField.exists?(name: 'original_gossamer_id', value: row['post_id'])
+      puts "TIJ EE post_id #{post_id}"
+      ActiveRecord::Base.transaction do
+        # Create the new topic in Discourse
+        begin
+          suffix = 1
+          topic_created = false
+    
+          while !topic_created
+            begin
+    puts "TIJ FF post_id #{post_id}"
+              puts "CREATE TOPIC unique_title #{unique_title} title #{title} discourse_user_id #{discourse_user_id} category_id #{discourse_category_id}"
+              topic = Topic.create!(
+                title: unique_title,
+                user_id: discourse_user_id,
+                created_at: Time.at(row['post_time']),
+                updated_at: Time.at(row['post_time']),
+                category_id: discourse_category_id,
+                views: post_views || 0,
+                posts_count: 0
+              )
+              topic.custom_fields['original_gossamer_id'] = row['post_id']
+              topic.save!
+    
+              topic_created = true
+#            rescue ActiveRecord::RecordInvalid => e
+              rescue => e
+              if e.message.include?("Title has already been used")
+                unique_title = "#{title} (#{suffix})"
+                suffix += 1
+              else
+                raise e
+              end
+              # puts e.backtrace.join("\n")  # Print the full stack trace
+            end
+          end
+
+          # Workaround... take a copy of topic.id 
+          current_topic_id = topic.id
+
+          sqlite_mutex.synchronize do
+            # Update the database with the last post time and user for the topic
+            update_db_topic_last_post_time(current_topic_id, Time.at(row['post_time']).to_i)
+            update_db_topic_last_post_user(current_topic_id, discourse_user_id)
+    
+            # Increment the topic count for the user
+            update_db_user_topic_count(discourse_user_id, fetch_db_user_topic_count(discourse_user_id).to_i + 1)
+          end
+    
+          # Sanitize and prepare the post message for Discourse
+          sanitized_post_message = sanitize_post_message(row['post_message'])
+    
+          puts "CREATE TOPIC POST for current_topic_id #{current_topic_id} discourse_user_id #{discourse_user_id}"
+
+          post_number = 0
+          # Increment the post count for the topic
+          post_number = fetch_db_topic_post_numbers(current_topic_id).to_i + 1
+          sqlite_mutex.synchronize do
+            update_db_topic_post_numbers(current_topic_id, post_number)
+          end
+
+     puts "TIJ GG post_id #{post_id}"
+ 
+            # Create the initial post in the new topic
+            post = Post.create!(
+              topic_id: current_topic_id,
+              user_id: discourse_user_id,
+              raw: sanitized_post_message,
+              created_at: Time.at(row['post_time']),
+              updated_at: Time.at(row['post_time']),
+              reads: post_views || 0,
+              post_number: post_number
+            )
+            post.custom_fields['original_gossamer_id'] = row['post_id']
+            post.save!
+    
+          sqlite_mutex.synchronize do
+            # Increment the post count for the topic and user
+            update_db_topic_post_count(current_topic_id, fetch_db_topic_post_count(current_topic_id).to_i + 1)
+            update_db_user_post_count(discourse_user_id, fetch_db_user_post_count(discourse_user_id).to_i + 1)
+          end
+  
+      puts "TIJ HH post_id #{post_id}"
+          # Handle any attachments associated with the post
+          handle_post_attachments(row['post_id'], post, discourse_user_id, mysql_client)
+    
+          # Create URL mappings for the new topic
+          new_url = "https://new/t/#{topic.slug}/#{current_topic_id}"
+          sqlite_mutex.synchronize do
+            insert_url_mapping(row['post_id'], new_url, unique_title)
+          end
+    
+          # Fetch and import all replies to this topic
+          replies = execute_query_concurrent("SELECT post_id, user_id_fk, post_message, post_time FROM gforum_Post WHERE post_root_id = #{post_id} ORDER BY post_time ASC", mysql_client)
+    
+          # Import each reply sequentially
+          replies.each do |reply_row|
+##            begin
+              # Fetch the discourse user ID for the reply
+              reply_user_id = fetch_user_id_mapping(reply_row['user_id_fk'])
+              if reply_user_id = 0
+                former_user = User.find_by(username: 'Former_User')
+                reply_user_id = former_user.id
+              end
+    
+      puts "TIJ II post_id #{post_id}"
+              # Sanitize and prepare the reply message for Discourse
+              sanitized_reply_message = sanitize_post_message(reply_row['post_message'])
+    
+              puts "CREATE REPLY in current_topic_id #{current_topic_id} for reply post_id #{reply_row['post_id']}"
+   
+###              def get_topic_id
+###                return topic.id
+###              end
+              # Increment the post count for the topic
+              post_number = fetch_db_topic_post_numbers(current_topic_id).to_i + 1
+              sqlite_mutex.synchronize do
+                update_db_topic_post_numbers(current_topic_id, post_number)
+###                update_db_topic_post_numbers(get_topic_id, post_number)
+              end
+    
+              # Fetch the number of views the post has had
+              reply_post_views = fetch_post_views(reply_row['post_id'])
+ 
+              # crazy sanity check
+              if topic.nil?
+                puts "ERROR: Topic is nil for reply post_id #{reply_row['post_id']}, attempting to BYPASS anyway"
+              end
+              puts "TIJ JJ post_id #{post_id}  reply post_id #{reply_row['post_id']}  reply_post_views #{reply_post_views || 0}  post_number #{post_number}  current_topic_id #{current_topic_id}  reply_post_views #{reply_post_views || 0}"
+                
+              # Create the reply post in the existing topic
+              post = Post.create!(
+                topic_id: current_topic_id,
+                user_id: reply_user_id,
+                raw: sanitized_reply_message,
+                created_at: Time.at(reply_row['post_time']),
+                updated_at: Time.at(reply_row['post_time']),
+                reads: reply_post_views || 0,
+                post_number: post_number
+              )
+              post.custom_fields['original_gossamer_id'] = reply_row['post_id']
+              post.save!
+    
+      puts "TIJ KK post_id #{post_id}"
+              # Increment the post count for the topic and user
+              update_db_topic_post_count(current_topic_id, fetch_db_topic_post_count(current_topic_id).to_i + 1)
+              update_db_user_post_count(reply_user_id, fetch_db_user_post_count(reply_user_id).to_i + 1)
+    
+              # Update last post time and user for the topic
+              if fetch_db_topic_last_post_time(current_topic_id).nil? || Time.at(reply_row['post_time']).to_i > fetch_db_topic_last_post_time(current_topic_id).to_i
+                update_db_topic_last_post_time(current_topic_id, Time.at(reply_row['post_time']).to_i)
+                update_db_topic_last_post_user(current_topic_id, reply_user_id)
+              end
+    
+              # Handle any attachments associated with the reply
+              handle_post_attachments(reply_row['post_id'], post, reply_user_id, mysql_client)
+    
+#             # Update the highest processed post_id in the database (thread-safe)
+#             update_highest_processed_post_id_thread_safe(reply_row['post_id'])
+    
+#            rescue ActiveRecord::RecordInvalid => e
+##            rescue => e
+##              puts "Error importing reply with post_id #{reply_row['post_id']}: #{e.message}"
+##              puts e.backtrace.join("\n")  # Print the full stack trace
+##            end
+          end
+  
+#          # After processing the entire topic, update the highest_processed_post_id to the current topic's post_id (thread-safe)
+#          update_highest_processed_post_id_thread_safe(post_id)
+    
+        rescue ActiveRecord::RecordInvalid => e
+          puts "Error importing topic with post_id #{row['post_id']}: #{e.message}"
+          raise ActiveRecord::Rollback
+        end
+      end
+    else
+      puts "Topic for post_id #{row['post_id']} already exists, skipping creation."
+    end
+
+    puts "   LAST Removing MySQL connection"
+#####    mysql_client.close  # if mysql_client
   end
 
-  #-------------------------------------------------------------------
+
+########## THREADING END --------------------------------------------
+
 
   # Import topics and posts from Gossamer Forums to Discourse
   def import_topics_and_posts_with_attachments
@@ -993,7 +1492,7 @@ class GossamerForumsImporter < ImportScripts::Base
 #   Attachment example:  highest_processed_post_id = 1359862 
 
     # Execute the query to get all posts ordered by post_id
-    execute_query("SELECT post_id, user_id_fk, forum_id_fk, post_root_id, post_subject, post_time, post_message, post_father_id, post_replies FROM gforum_Post ORDER BY post_id").each do |row|
+    execute_query("SELECT post_id, user_id_fk, forum_id_fk, post_root_id, post_subject, post_time, post_message, post_father_id, post_likes, post_replies FROM gforum_Post ORDER BY post_id").each do |row|
       post_id = row['post_id'].to_i
 
      # Skip posts that have already been processed
@@ -1429,15 +1928,21 @@ class GossamerForumsImporter < ImportScripts::Base
 
 #    add_former_user
 #    import_users
-#    export_username_mapping_to_csv("gossamer-migration-username-mapping#{timestamp}")
-#
+
+#    generate_user_id_mapping
+#    export_username_mapping_to_csv("/bitnami/discourse/sqlite/gossamer-migration-username-mapping#{timestamp}")
+
+##    set_user_bio_images
+
 #    import_categories
-#
-    import_topics_and_posts_with_attachments
+
+#######    import_topics_and_posts_with_attachments
+    threaded_topic_import
+
     update_topic_stats
     update_user_stats
-    export_url_mapping_to_csv("gossamer-migration-url-mapping#{timestamp}")
-    create_nginx_rewrite_rules("gossamer-redirects#{timestamp}.conf")
+    export_url_mapping_to_csv("/bitnami/discourse/sqlite/gossamer-migration-url-mapping#{timestamp}")
+    create_nginx_rewrite_rules("/bitnami/discourse/sqlite/gossamer-redirects#{timestamp}.conf")
 
     import_personal_messages
 

gosss.rb

@@ -0,0 +1,658 @@
+# gossamer threads migration-import code
+# v0.12
+
+require 'mysql2'
+require 'open-uri'
+require 'net/http'
+require 'tempfile'
+require 'sqlite3'
+
+require 'digest'
+require 'fileutils'
+require 'csv'
+require 'time'
+
+require File.expand_path("../../../config/environment", __FILE__)
+require_relative 'base'
+
+class GossamerForumsImporter < ImportScripts::Base
+  def initialize
+    super
+      begin
+        # Initialize MySQL client to connect to Gossamer Forums database
+        @mysql_client = Mysql2::Client.new(
+          host: "slot.northend.network",
+          username: "admin",
+          password: "yxnh93Ybbz2Nm8#mp28zCVv",
+          database: "slot"
+        )
+      rescue Mysql2::Error => e
+        puts "Error connecting to MySQL: #{e.message}"
+        exit 1
+      end
+
+#    # Create a mapping of old Gossamer user IDs to new Discourse user IDs
+#    @user_id_map = {}
+      initialize_sqlite_id_name_url_db
+  end
+
+  def initialize_sqlite_id_name_url_db
+    @db = SQLite3::Database.new 'id_name_url_map.db'
+    @db.execute <<-SQL
+      CREATE TABLE IF NOT EXISTS user_id_map (
+        old_user_id INTEGER PRIMARY KEY,
+        new_user_id INTEGER
+      );
+    SQL
+    @db.execute <<-SQL
+      CREATE TABLE IF NOT EXISTS category_id_map (
+        old_category_id INTEGER PRIMARY KEY,
+        new_category_id INTEGER
+      );
+    SQL
+    @db.execute <<-SQL
+      CREATE TABLE IF NOT EXISTS username_map (
+        id INTEGER PRIMARY KEY,
+        old_username TEXT,
+        new_username TEXT,
+        email TEXT,
+        real_name TEXT
+      );
+    SQL
+    @db.execute <<-SQL
+      CREATE TABLE IF NOT EXISTS url_map (
+        old_post_id INTEGER PRIMARY KEY,
+        new_url TEXT,
+        title TEXT
+#         created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    SQL
+  end
+
+  def insert_user_id_mapping(old_user_id, new_user_id)
+    @db.execute "INSERT OR REPLACE INTO user_id_map (old_user_id, new_user_id) VALUES (?, ?)", old_user_id, new_user_id
+  end
+
+  def fetch_user_id_mapping(old_user_id)
+    @db.get_first_value "SELECT new_user_id FROM user_id_map WHERE old_user_id = ?", old_user_id
+  end
+
+  def insert_category_id_mapping(old_category_id, new_category_id)
+    @db.execute "INSERT OR REPLACE INTO category_id_map (old_category_id, new_category_id) VALUES (?, ?)", old_category_id, new_category_id
+  end
+
+  def fetch_category_id_mapping(old_category_id)
+    @db.get_first_value "SELECT new_category_id FROM category_id_map WHERE old_category_id = ?", old_category_id
+  end
+
+  def insert_username_mapping(old_username, new_username, email, real_name)
+    @db.execute "INSERT INTO username_map (old_username, new_username, email, real_name) VALUES (?, ?, ?, ?)", old_username, new_username, email, real_name
+  end
+
+  # Define a method to export the username mapping table to a CSV file
+  def export_username_mapping_to_csv(filename)
+    CSV.open(filename, 'w') do |csv|
+      # Add headers
+      csv << ['Old Username', 'New Username', 'Email', 'Full Name']
+      
+      # Fetch data from the database
+      @db.execute("SELECT old_username, new_username, email, real_name FROM username_map") do |row|
+        csv << row
+      end
+    end
+    puts "Exported changed username mappings to #{filename}"
+  end
+
+  # Insert a URL mapping into the SQLite database
+  def insert_url_mapping(old_post_id, new_url, title)
+    @db.execute "INSERT INTO url_map (old_post_id, new_url, title) VALUES (?, ?, ?)", [old_post_id, new_url, title]
+  end
+  
+  # Export the URL mappings to a CSV file
+  def export_url_mapping_to_csv(filename)
+    CSV.open(filename, "w") do |csv|
+      # Add headers
+      csv << ["Old Post ID", "New URL", "Title"]
+      @db.execute("SELECT old_post_id, new_url, title FROM url_map") do |row|
+        csv << row
+      end
+    end
+    puts "Exported URL mappings to #{filename}"
+  end
+
+  # Method to create Nginx rewrite rules file
+  def create_nginx_rewrite_rules(filename)
+    File.open(filename, "w") do |file|
+      @db.execute("SELECT old_post_id, new_url FROM url_map") do |row|
+        old_post_id, new_url = row
+        file.puts "rewrite ^/forum/.*P#{old_post_id}/$ #{new_url} permanent;"
+      end
+    end
+  end
+
+  # Execute an SQL query on the Gossamer Forums database
+  def execute_query(query)
+    @mysql_client.query(query, as: :hash)
+  end
+
+  # Sanitize the username to meet Discourse's requirements
+  def sanitize_username(original_username, email, real_name)
+#     original_username = username
+    sanitized_username = username.gsub(/[^a-zA-Z0-9._-]/, '_')
+    sanitized_username = "#{sanitized_username}." if sanitized_username.length < 2 # Allow two-character usernames
+    sanitized_username = sanitized_username[0, 20] if sanitized_username.length > 20
+    firststep_sanitized = sanitized_username
+
+    existing_user = User.find_by(username: sanitized_username)
+    
+    if existing_user
+      if existing_user.email.downcase == email.downcase && existing_user.name == name
+        return sanitized_username
+      else
+        counter = 1
+        while User.exists?(username: sanitized_username)
+          sanitized_username = "#{firststep_sanitized}_#{counter}"
+          sanitized_username = sanitized_username[0, 20] if sanitized_username.length > 20
+          counter += 1
+        end
+      end
+    end
+
+    if original_username != sanitized_username
+      # The Discourse username is not the same as the Gossamer Forums username
+      puts "Sanitized username: '#{original_username}' --> '#{sanitized_username}'"
+      insert_username_mapping(original_username, sanitized_username, email, real_name)
+#    else
+#      puts "UNsanitized username:  '#{original_username}' --> '#{sanitized_username}'"
+    end
+
+    sanitized_username
+  end
+
+  # Sanitize email to replace restricted domains
+  def sanitize_email(email)
+    restricted_domains = ['mailinator.com', 'example.com'] # Add more restricted domains as needed
+    domain = email.split('@').last
+
+    if restricted_domains.include?(domain)
+      sanitized_email = email.gsub(domain, 'example.org') # Change to a permissible domain
+      puts "Sanitized email: '#{email}' --> '#{sanitized_email}'"
+      return sanitized_email
+    end
+
+    email
+  end
+
+  # Helper method to download an image from a URL
+  def download_image(url)
+    begin
+      URI.open(url).read
+    rescue OpenURI::HTTPError => e
+      puts "Failed to download image from #{url}: #{e.message}"
+      nil
+    rescue URI::InvalidURIError => e
+      puts "Failed to handle invalid URL/URI for #{url}: #{e.message}"
+      nil
+    end
+  end
+
+  def upload_image(user, file, filename, gossamer_url)
+    begin
+      upload = Upload.create!(
+        user_id: user.id,
+        original_filename: filename,
+        filesize: file.size,
+#        filesize: File.size(file.path),
+#        content_type: `file --brief --mime-type #{file.path}`.strip,
+#        sha1: Digest::SHA1.file(file.path).hexdigest,
+#        origin: 'user_avatar',
+#        retain_hours: nil,
+        url: gossamer_url
+      )
+#        Error -- non-existent method    upload.ensure_consistency!
+    
+      # Move the file to the correct location
+#      FileUtils.mv(file.path, upload.path)
+      upload.save!
+    
+      upload
+    rescue => e
+      puts "Failed to upload image #{filename} for user #{user.username}: #{e.message}"
+      nil
+    end
+  end
+
+
+#  def download_file(url)
+#    require 'open-uri'
+#    begin
+#      file = Tempfile.new
+#      file.binmode
+#      file.write(URI.open(url).read)
+#      file.rewind
+#      file
+#    rescue => e
+#      puts "Failed to download file from #{url}: #{e.message}"
+#      nil
+#    end
+#  end
+
+  # Helper method to upload an image to Discourse
+#  def upload_image(user, image_data, filename)
+#    return if image_data.nil?
+#
+#    upload = Upload.create_for(user.id, File.open(image_data.path), filename, 'image/jpeg')
+#    if upload.nil? || !upload.persisted?
+#      puts "Failed to upload image for user #{user.username}"
+#      return
+#    end
+#
+#    upload
+#  end
+
+
+  # Import users from Gossamer Forums to Discourse
+  def import_users
+    puts "Importing users..."
+    users = []
+
+    # Fetch all users from Gossamer Forums
+    execute_query("SELECT * FROM gforum_User").each do |row|
+      users << {
+        id: row['user_id'],
+        username: sanitize_username(row['user_username'], row['user_email'], row['user_real_name']),
+        email: row['user_email'],
+        created_at: Time.at(row['user_registered']),
+        updated_at: Time.at(row['user_last_seen']),
+        name: row['user_real_name'],
+        title: row['user_title'],
+        bio_raw: row['user_about'] || "",
+        website: row['user_homepage'],
+        location: row['user_location'],
+        custom_fields: {
+          md5_password: row['user_password'],
+          original_username: row['user_username'],
+          original_gossamer_id: row['user_id']
+        }
+      }
+    end
+
+    # Create or update users in Discourse
+    create_users(users) do |user|
+#      insert_user_id_mapping(user[:id], user.id)
+      user
+    end
+
+    # For each user, add user ID mapping to SQLite now that we know what the Discourse user ID is, ... and append user bio and import user files
+    users.each do |discourse_user|
+      # discourse_username = sanitize_username(user[:username], user[:email], user[:name])
+      # discourse_user = User.find_by(username: discourse_username)
+
+      # if discourse_user.nil?
+      #   puts "User #{user[:username]} --> #{discourse_username} not found in Discourse. Skipping file import."
+      #   next
+      # end
+
+#      # Store the user ID mapping
+#      @user_id_map[user[:id]] = discourse_user.id
+      puts "for insert_user_id_mapping:   user[:id]  #{user[:id]}  discourse_user.id  #{discourse_user.id}"
+      insert_user_id_mapping(user[:id], discourse_user.id)
+
+      # Ensure user profile exists and bio_raw is a string
+      discourse_user.user_profile ||= UserProfile.new(user_id: discourse_user.id)
+      discourse_user.user_profile.bio_raw ||= ""
+
+      # Append bio if it exists, otherwise set it to empty string to avoid nil errors
+      if discourse_user.user_profile.bio_raw.empty?
+        discourse_user.user_profile.bio_raw = user[:bio_raw]
+      else
+        discourse_user.user_profile.bio_raw += "\n\n" + user[:bio_raw]
+      end
+
+      # Ensure the bio does not exceed 3000 characters
+      if discourse_user.user_profile.bio_raw.length > 3000
+        puts "Warning: About Me for user #{discourse_user.username} (ID: #{discourse_user.id}) exceeds 3000 characters. Truncating."
+        discourse_user.user_profile.bio_raw = discourse_user.user_profile.bio_raw[0, 3000]
+      end
+      discourse_user.user_profile.save!
+
+      # Import user files
+      import_user_files(discourse_user)
+    end
+  end
+
+#  # Import user files from Gossamer Forums to Discourse
+#  def import_user_files(user)
+#    print "\rImporting files for user #{user.username}..."
+#
+#    original_gossamer_id = user.custom_fields['original_gossamer_id']
+#    if original_gossamer_id.nil? || original_gossamer_id.empty?
+#      puts "User #{user.username} does not have a valid original_gossamer_id. Skipping file import."
+#      return
+#    end
+#
+# #   puts "Original Gossamer ID for user #{user.username}: #{original_gossamer_id}"
+#
+#    # Fetch and import user files
+#    execute_query("SELECT * FROM gforum_User_Files WHERE ForeignColKey = #{original_gossamer_id}").each do |file|
+#      # Construct the file URL
+#      file_url = "https://forum.slot.com/images/users/images/#{file['ID'] % 10}/#{file['ID']}-#{file['File_Name']}"
+#      puts "User #{user.username}  User ID: #{user.id}  original_gossamer_id: #{original_gossamer_id}  file_url: #{file_url}"
+#      
+#      new_bio = user.user_profile.bio_raw + "\n\n![#{file['File_Name']}](#{file_url})"
+#      if new_bio.length > 3000
+#        puts "Warning: About Me for user #{user.username} (ID: #{user.id}) exceeds 3000 characters after adding file link. Truncating."
+#        new_bio = new_bio[0, 3000]
+#      end
+#      user.user_profile.bio_raw = new_bio
+#      user.user_profile.save!
+#    end
+#    print "Importing files for user #{user.username}... Done.\n"
+#  end
+
+  # Import user files (profile images) from Gossamer Forums to Discourse
+  def import_user_files(user)
+    print "\rImporting files for user #{user.username}..."
+  
+    original_gossamer_id = user.custom_fields['original_gossamer_id']
+    if original_gossamer_id.nil? || original_gossamer_id.empty?
+      puts "User #{user.username} does not have a valid original_gossamer_id. Skipping file import."
+      return
+    end
+  
+    puts "Original Gossamer ID for user #{user.username}: #{original_gossamer_id}"
+  
+    images_imported = 0
+  
+    execute_query("SELECT * FROM gforum_User_Files WHERE ForeignColKey = #{original_gossamer_id}").each do |file|
+      file_url = "https://forum.slot.com/images/users/images/#{file['ID'] % 10}/#{file['ID']}-#{file['File_Name']}"
+      puts "User #{user.username}  User ID: #{user.id}  original_gossamer_id: #{original_gossamer_id}  file_url: #{file_url}"
+  
+      next unless file['ForeignColName'] =~ /^user_image\d+$/
+      puts "#A"
+      next unless ['image/jpeg', 'image/png'].include?(file['File_MimeType'])
+      puts "#B"
+  
+      image_data = download_image(file_url)
+      next if image_data.nil?
+      puts "#C"
+  
+      temp_file = Tempfile.new(['user_image', File.extname(file['File_Name'])])
+      temp_file.binmode
+      temp_file.write(image_data)
+      temp_file.rewind
+  
+      if images_imported == 0
+        puts "#D"
+        upload = upload_image(user, temp_file, file['File_Name'], file_url)
+        next if upload.nil?
+  
+        user.user_avatar = UserAvatar.create!(user_id: user.id, custom_upload_id: upload.id)
+        user.save!
+
+        # Set the Profile Header
+        UserProfile.find_by(user_id: user.id).update!(profile_background_upload_id: upload.id)
+
+        # Set the User Card Background
+        UserProfile.find_by(user_id: user.id).update!(card_background_upload_id: upload.id)
+
+        images_imported += 1
+      end 
+      puts "#E"
+      user.user_profile.bio_raw ||= ""
+      user.user_profile.bio_raw += "\n\n![#{file['File_Name']}](#{file_url})"
+      user.user_profile.save!
+        
+      temp_file.close
+      temp_file.unlink
+    end
+    print "Importing files for user #{user.username}... Done.\n"
+  end
+
+
+  # Import categories from Gossamer Forums to Discourse
+  def import_categories
+    puts "Importing categories (forums)..."
+    execute_query("SELECT * FROM gforum_Forum").each do |row|
+      # Only create category if it does not exist
+      unless CategoryCustomField.exists?(name: 'original_gossamer_id', value: row['forum_id'])
+        category_name = row['forum_name']
+        category_description = row['forum_desc'] || "No description provided"
+        puts "id  #{row['forum_id']}  name  #{category_name}  description  #{category_description}"
+        # Create category in Discourse
+        category = create_category(
+          {
+#            id: row['forum_id'] + 10,
+            name: category_name,
+            description: category_description,
+            created_at: row['forum_last'] ? Time.at(row['forum_last']) : Time.now,
+            updated_at: row['forum_last'] ? Time.at(row['forum_last']) : Time.now
+          },
+          row['forum_id'] # import_id argument
+        )
+
+#        # Map Gossamer forum ID to Discourse category ID for future reference
+#        @forum_id_map[row['forum_id']] = category.id
+
+#        category.custom_fields.create!(name: 'original_gossamer_id', value: row['forum_id'])
+        category.custom_fields['original_gossamer_id'] = row['forum_id']
+        category.save!
+
+        # Store the user ID mapping
+        puts "for insert_category_id_mapping:   category[:id]  #{category[:id]}  row['forum_id']  #{row['forum_id']}"
+        insert_category_id_mapping(row['forum_id'], category[:id])
+      end
+    end
+    puts "Importing categories... Done."
+  end
+
+  # Helper function to ensure title meets the minimum length requirement
+  def ensure_valid_title(title, min_length = 5)
+    if title.length < min_length
+      title += "." * (min_length - title.length) # Append dots to make it longer
+    end
+    title
+  end
+
+# Import topics and posts from Gossamer Forums to Discourse
+def import_topics_and_posts
+  puts "Importing topics and posts..."
+  
+  # Execute the query to get all posts ordered by post_id
+  execute_query("SELECT * FROM gforum_Post ORDER BY post_id").each do |row|
+    puts "post_id  #{row['post_id']}  post_root_id  #{row['post_root_id']}  post_subject/title  #{row['post_subject']}  forum_id_fk/category_id  #{row['forum_id_fk']}"
+#    discourse_user_id = @user_id_map[row['user_id_fk']]
+    discourse_user_id = fetch_user_id_mapping(row['user_id_fk'])
+    discourse_category_id = fetch_category_id_mapping(row['forum_id_fk'])
+
+    puts "discourse_user_id  #{discourse_user_id}  discourse_category_id  #{discourse_category_id}"
+    next unless discourse_user_id && discourse_category_id
+
+    if row['post_root_id'] == 0
+      puts "#1"
+      # Ensure the title is valid
+      title = ensure_valid_title(row['post_subject'])
+
+      # Skip if the topic already exists
+      unless TopicCustomField.exists?(name: 'original_gossamer_id', value: row['post_id'])
+        # Create the topic
+        begin
+          puts "#2"
+          puts "CREATE TOPIC  title #{title}  discourse_user_id #{discourse_user_id}  category_id #{discourse_category_id}"
+          topic = Topic.create!(
+            title: title,
+            user_id: discourse_user_id,
+            created_at: Time.at(row['post_time']),
+            updated_at: Time.at(row['post_latest_reply']),
+            category_id: discourse_category_id
+          )
+          topic.custom_fields['original_gossamer_id'] = row['post_id']
+          topic.save!
+
+          # Create the initial post in the topic
+          puts "CREATE POST  topic.id #{topic.id}  discourse_user_id #{discourse_user_id}"
+          sanitized_post_message = row['post_message']&.tr("\0", '') || ""
+          post = Post.create!(
+            topic_id: topic.id,
+            user_id: discourse_user_id,
+#            raw: import_attachments(row['post_message'], row['post_id']),
+#            raw: row['post_message'] || "",
+            raw: sanitized_post_message,
+            created_at: Time.at(row['post_time']),
+            updated_at: Time.at(row['post_latest_reply'])
+          )
+          post.custom_fields['original_gossamer_id'] = row['post_id']
+          post.save!
+
+          # Create URL mappings
+#          old_url = "https://old/forum/#{row['forum_name']}/topics/#{row['post_id']}"
+          new_url = "https://new/t/#{topic.slug}/#{topic.id}"
+          insert_url_mapping(row['post_id'], new_url, title)
+
+        rescue ActiveRecord::RecordInvalid => e
+          puts "Error importing topic with post_id #{row['post_id']}: #{e.message}"
+        end
+      end
+
+    else
+      puts "#3"
+      # Find the root topic for the post
+      root_topic_field = TopicCustomField.find_by(name: 'original_gossamer_id', value: row['post_root_id'])
+      
+      if root_topic_field
+        topic_id = root_topic_field.topic_id
+        
+        # Find the parent post for the reply
+        parent_post_field = PostCustomField.find_by(name: 'original_gossamer_id', value: row['post_father_id'])
+        reply_to_post_number = parent_post_field ? Post.find(parent_post_field.post_id).post_number : nil
+        
+        # Create the post in the existing topic
+        begin
+          puts "#4"
+          sanitized_post_message = row['post_message']&.tr("\0", '') || ""
+          post = Post.create!(
+            topic_id: topic_id,
+            user_id: discourse_user_id,
+#             raw: import_attachments(row['post_message'], row['post_id']),
+#            raw: row['post_message'] || "",
+            raw: sanitized_post_message,
+            created_at: Time.at(row['post_time']),
+            updated_at: Time.at(row['post_latest_reply']),
+            reply_to_post_number: reply_to_post_number
+          )
+          post.custom_fields['original_gossamer_id'] = row['post_id']
+          post.save!
+        rescue ActiveRecord::RecordInvalid => e
+          puts "Error importing post with post_id #{row['post_id']}: #{e.message}"
+        end
+      else
+        puts "Warning: Root topic not found for post_id #{row['post_id']} with post_root_id #{row['post_root_id']}"
+      end
+    end
+  end
+end
+
+
+# Import personal messages from gforum_Message table (both inbox and sent messages)
+def import_personal_messages
+  puts "Importing personal (inbox and sendmail) messages..."
+  execute_query("SELECT * FROM gforum_Message").each do |row|
+
+  from_user_id = fetch_user_id_mapping(row['from_user_id_fk'])
+  to_user_id = fetch_user_id_mapping(row['to_user_id_fk'])
+
+  next unless from_user_id && to_user_id
+
+    # Skip if the message already exists
+    unless TopicCustomField.exists?(name: 'original_gossamer_msg_id', value: row['msg_id'])
+
+      # Sanitize the message, ensuring we have an empty string or the content without any \0
+      sanitized_message = row['msg_body']&.tr("\0", '') || ""
+
+      # Set default message body if the sanitized message is blank
+      sanitized_message = " " if sanitized_message.strip.empty?
+
+#     # If we do not change the "min personal message post length" to 1, we need this.
+#     sanitized_message = sanitized_message.ljust(10, ' ') if sanitized_message.length < 10
+
+     # Check and set a default title if the original title is nil or empty
+      title = row['msg_subject']&.strip
+      title = "<no subject>" if title.nil? || title.empty?
+
+      puts "IMPORTING   title  #{row['msg_subject']}  user_id  #{from_user_id}  to_user_id  #{to_user_id}"
+
+      # Create a private message topic in Discourse
+      topic = Topic.create!(
+        title: row['msg_subject'],
+        user_id: from_user_id,
+        archetype: Archetype.private_message,
+        created_at: Time.at(row['msg_time']),
+        updated_at: Time.at(row['msg_time'])
+      )
+      topic.custom_fields['original_gossamer_msg_id'] = row['msg_id']
+      topic.save!
+
+      # Create the message as a post in the private topic
+      post = Post.create!(
+        topic_id: topic.id,
+        user_id: from_user_id,
+#        raw: row['msg_body'],
+        raw: sanitized_message,
+        created_at: Time.at(row['msg_time']),
+        updated_at: Time.at(row['msg_time'])
+      )
+      post.custom_fields['original_gossamer_msg_id'] = row['msg_id']
+      post.save!
+
+      # Add recipient user to the private message topic
+      topic.topic_allowed_users.create!(user_id: to_user_id)
+    end
+  end
+end
+
+
+  # Import attachments for a post
+ def import_post_attachments(post_message, post_id)
+    # Fetch attachments related to the post
+    attachments = execute_query("SELECT * FROM gforum_PostAttachment WHERE post_id_fk = #{post_id}")
+    attachments.each do |attachment|
+
+      # Append attachment links to the post message
+      file_url = "https://forum.slot.com/images/posts/attachments/#{attachment['ID'] % 10}/#{attachment['ID']}-#{attachment['File_Name']}"
+      post_message += "\n\n![#{attachment['File_Name']}](#{file_url})"
+    end
+1#    post_message
+  end
+
+
+
+
+
+  # Main method to perform the import
+  def perform_import
+    # Secret trick to disable RateLimiting protection in Discourse
+    RateLimiter.disable
+
+    # Set our unique timestamp for this migration run
+    timestamp = Time.now.strftime("-%y%m%d%H%M%S")
+
+    puts "Starting Gossamer Forums import... #{timestamp}"
+
+    import_users
+    export_username_mapping_to_csv("gossamer-migration-username-mapping#{timestamp}")
+
+    import_categories
+    import_topics_and_posts
+    export_url_mapping_to_csv("gossamer-migration-url-mapping#{timestamp}")
+    create_nginx_rewrite_rules("gossamer-redirects.conf")
+
+    import_personal_messages
+
+    # import_attachments
+
+    puts "Gossamer Forums import complete! #{timestamp}"
+  end
+end
+
+GossamerForumsImporter.new.perform_import
+