From dd5f3a9333dd2205b587a9976aa53a70e6d502c5 Mon Sep 17 00:00:00 2001
From: saint <saint@saint.li>
Date: Mon, 1 Jul 2024 16:08:07 +1000
Subject: [PATCH] v0.22 Fix incremental support for post handling

---
 gossamer_forums.rb | 47 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

diff --git a/gossamer_forums.rb b/gossamer_forums.rb
index 95d1ded..3ce201c 100644
--- a/gossamer_forums.rb
+++ b/gossamer_forums.rb
@@ -1,5 +1,5 @@
 # gossamer threads migration-import code
-# v0.21.5
+# v0.22
 
 require 'mysql2'
 require 'open-uri'
@@ -109,6 +109,12 @@ class GossamerForumsImporter < ImportScripts::Base
         post_number INTEGER DEFAULT 0
       );
     SQL
+    @db.execute <<-SQL
+    CREATE TABLE IF NOT EXISTS highest_processed_post_id (
+      id INTEGER PRIMARY KEY CHECK (id = 1),
+      post_id INTEGER
+    );
+    SQL
   end
 
   def insert_user_id_mapping(old_user_id, new_user_id)
@@ -172,6 +178,11 @@ class GossamerForumsImporter < ImportScripts::Base
     end
   end
 
+  # Fetch the highest old_post_id from the url_map table
+  def fetch_highest_old_post_id
+    @db.get_first_value "SELECT MAX(old_post_id) FROM url_map"
+  end
+
   # Helper methods to interact with the SQLite database for persisting topic-post related values
   def fetch_db(table, key)
     @db.get_first_value "SELECT value FROM #{table} WHERE key = ?", key
@@ -229,6 +240,16 @@ class GossamerForumsImporter < ImportScripts::Base
     @db.execute "INSERT OR REPLACE INTO topic_post_numbers (topic_id, post_number) VALUES (?, ?)", topic_id, post_number
   end
 
+  # Fetch the highest processed post_id from the highest_processed_post_id table
+  def fetch_highest_processed_post_id
+    @db.get_first_value "SELECT post_id FROM highest_processed_post_id WHERE id = 1"
+  end
+  
+  # Update the highest processed post_id in the highest_processed_post_id table
+  def update_highest_processed_post_id(post_id)
+    @db.execute "INSERT OR REPLACE INTO highest_processed_post_id (id, post_id) VALUES (1, ?)", post_id
+  end
+
 
   # Execute an SQL query on the Gossamer Forums database
   def execute_query(query)
@@ -762,9 +783,23 @@ class GossamerForumsImporter < ImportScripts::Base
 #    topic_last_post_user = {}
 #    topic_post_numbers = Hash.new { |hash, key| hash[key] = 0 }
 
+    # Fetch the highest old_post_id from the url_map table
+# FIX THIS PROPERLY
+    highest_old_post_id = fetch_highest_old_post_id.to_i
+    puts "Highest (OP) old_post_id in url_map: #{highest_old_post_id}"
+    highest_processed_post_id = fetch_highest_processed_post_id.to_i
+    puts "Highest processed post_id: #{highest_processed_post_id}"
+
     # 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']}"
+      post_id = row['post_id'].to_i
+
+      # Skip posts that have already been processed
+# FIX THIS PROPERLY FOR FUTURE RUNS
+      next if post_id < highest_old_post_id
+#      next if post_id <= highest_processed_post_id
+
+      puts "Processing post_id #{row['post_id']}  post_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']]
 
       # Fetch the Discourse user and category IP mappings
@@ -860,6 +895,10 @@ class GossamerForumsImporter < ImportScripts::Base
 #            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)
+
+            # Update the highest processed post_id
+            puts "Updated highest processed post_id #{post_id}"
+            update_highest_processed_post_id(post_id)
   
           rescue ActiveRecord::RecordInvalid => e
             puts "Error importing topic with post_id #{row['post_id']}: #{e.message}"
@@ -927,6 +966,10 @@ class GossamerForumsImporter < ImportScripts::Base
 
             # Handle attachments for the post
             handle_post_attachments(row['post_id'], post, discourse_user_id)
+        
+            # Update the highest processed post_id
+            puts "Updated highest processed post_id #{post_id}"
+            update_highest_processed_post_id(post_id)
 
           rescue ActiveRecord::RecordInvalid => e
             puts "Error importing post with post_id #{row['post_id']}: #{e.message}"