#!/usr/bin/env ruby

require 'rss'
require 'json'
require 'open-uri'
require 'cgi'
require_relative './../../xrforge.rb'

# Check if a filename is provided
if ARGV.length != 1
  puts "Usage: #{$0} <path/to/experience/somefile.xxx>"
  exit 1
end

filename = ARGV[0]
  
# dont run for each file-update
if ! filename.end_with?("datapackage.json")
  exit 0 
end

def generate(aphandle,filename,dir,data,logfile)

  XRForge.log("✅ starting mastodon-post for #{aphandle}", logfile)

  parts  = aphandle.split("@")
  server = parts[2].sub(/@/,"")
  rssUrl = "https://#{server}/@#{parts[1]}.rss"
  XRForge.log("✅ checking #{rssUrl}", logfile)

  feed = RSS::Parser.parse(URI.open(rssUrl, 'User-Agent' => 'Ruby-RSS-Client'))

  puts feed.channel.title 
  puts feed.channel.link

  first_item = feed.items.first
  if first_item
    description = CGI.unescapeHTML(first_item.description.to_s)
                  .split("\n")[0,4].join("\n")  # max 5 lines
                  .gsub(/<[^>]*>/, '')        # remove other tags
                  #.gsub(/<br\s*\/?>/i, "\n") # preserve linebreaks
                  #.gsub(/<\/p>/i, "\n")      # preserve linebreaks
    description = description.length > 130 ? description = description[0,130] + " (..)" : description
  else
    XRForge.log("❌ did not find post", logfile)
    exit 0 
  end
  
  puts description

  # look for first image 
  media_regex = /<media:content url=['"]([^'"]+)['"]/
  img = feed.to_s.match(media_regex)
  if img and img[1] and img[1].match(/(png|jpg)/)
    imgurl = img[1]
  end

  # generate the final .glb
  system("/root/templates/mastodon-post/mastodon-post.sh", description, feed.channel.title, feed.channel.link, aphandle, "#{dir}/#{aphandle}.glb")
end

begin
  # Change the directory
  dir = File.dirname(filename)
  Dir.chdir( dir )
  # Read and parse the JSON file
  data     = JSON.parse( File.read( "datapackage.json" ) )
  logfile = File.join( File.dirname(filename), ".xrforge/log.txt" )

  data['keywords'].each do |tag|
    if tag.match?(/^@.*@.*\./)  # scan for activitypub handle (@foo@mastodon.online e.g.) 
      generate(tag,filename,dir,data,logfile)
    end
  end

  XRForge.log(" ", logfile)

rescue OpenURI::HTTPError => e
  # Handle HTTP errors (e.g., 404 not found, 403 forbidden)
  puts "Error fetching feed: #{e.message}"
  exit
rescue => e
  # Handle other parsing or connection errors
  puts "An error occurred: #{e.message}"
rescue Errno::ENOENT
  puts "File #{filename} not found"
rescue JSON::ParserError
  puts "Error parsing JSON from #{filename}"
rescue => e
  puts "An error occurred: #{e.message}"
end