Watcher list page numbers were changed from 1-indexed to 0-indexed. F…

…or backwards compatibility, let's just subtract one when making the request. (I know, it seems a little horrible, but this application is full of horrible things done for backwards compatibility)

lib/faexport/scraper.rb

@@ -563,6 +563,7 @@
 
   def budlist(name, page, is_watchers)
     mode = is_watchers ? "to" : "by"
+    page = page - 1 # FA changed watchers list pages from being 1-indexed, to 0-indexed. So we have to convert to ensure backward compatibility.
     url = "watchlist/#{mode}/#{escape(name)}/#{page}/"
     html = fetch(url)
 
@@ -1318,7 +1319,7 @@
       rescue OpenURI::HTTPError => e
         $http_errors.increment(labels: { page_type: page_type })
         # Detect and handle known errors
         if e.io.status[0] == "403" || e.io.status[0] == "503" || e.io.status[0] == "400"
           raw = e.io.read
           html = Nokogiri::HTML(raw.encode("UTF-8", invalid: :replace, undef: :replace).delete("\000"))
 
@@ -1338,7 +1339,7 @@
           # Handle user not found errors
           if e.io.status[0] == "400"
             head = html.xpath("//head//title").first
             if head.content == "System Error"
               error_msg = html.at_css("table.maintable td.alt1 font").content
               # Handle user profile not found, and user not found on journal listing
               if error_msg.include?("This user cannot be found") || error_msg.include?("User not found!")

lib/faexport/views/docs.md

@@ -354,6 +354,9 @@ Accounts that are watching or watched by the specified user.
 By default, the first 200 users are returned.
 You can pass a parameter `?page=2` to load more.
 
+**Note:** The first page, and the default page, is page 1. Furaffinity has changed their site to zero-index pages, but
+for backwards compatibility, FAExport continues to 1-index them.
+
 *Formats:* `json`, `xml`
 
 ~~~json