#!/usr/bin/env ruby

require 'json'
require_relative './../../xrforge.rb'

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

filename = ARGV[0]
JMLHeuristic = /<fireboxroom>.*?<\/fireboxroom>/im

begin

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

  # Change the directory
  dir       = File.dirname(filename)
  dirPublic = dir.gsub("/mnt/","").gsub("#","%23")
  Dir.chdir( File.dirname(filename) )
  # Read and parse the JSON file
  data = JSON.parse( File.read( "datapackage.json" ) )

  #if data['keywords'].empty? || data['keywords'].include?('janusxr')

  logfile = File.join( File.dirname(filename), ".xrforge/log.txt" )

  XRForge.log("✅ starting build janusXR XR scene", logfile)

  model_file = XRForge.getExperienceFile(data,dir,logfile)
  
  # Check if a model file was found after the loop
  if ! model_file
    XRForge.log("❌ No suitable 3D file found for JanusXR-compatible experience", logfile)
    exit 0
  end

  # Get the value of the environment variable FEDERATE_DRIVE_HOST
  federate_drive_host = ENV['FEDERATE_DRIVE_HOST']

  autogenerate = true

  if data['description'] && data['description'].match(JMLHeuristic)
    if data['description'].match(/autogenerate=["']false["']/i)
      XRForge.log("✅ autogenerate='false' found in JML..keeping this JML",logfile)
      autogenerate = false
      jmlMatch = data['description'].match(JMLHeuristic)
      jml = jmlMatch[0] 
    end
  end
  if autogenerate
    assets  = "<assetobject id=\"experience\" src=\"#{federate_drive_host}/#{dirPublic}/#{model_file.gsub("#","%23")}\"/>\n"
    objects = ""

    # detect audio track sidecarfile as per XR Fragment spec: https://xrfragment.org/#%F0%9F%93%9C%20level0%3A%20File
    xrf_ext = File.extname(model_file)
    xrf_base = File.basename(model_file, xrf_ext)
    data['resources'].each do |resource|
      ext = File.extname(resource['path'])
      if ext.match(/mp3/i)
        base = File.basename(resource['path'], ext)
        if base == xrf_base 
          XRForge.log("✅ XR Fragments side-car file found: #{resource['path']}",logfile)
          assets  = assets  + "    <assetsound id=\"soundtrack\" src=\"#{federate_drive_host}/#{dirPublic}/#{resource["path"]}\"/>\n"
          objects = objects + "<sound id=\"soundtrack\" loop=\"true\"/>\n"
        end
      end
    end

    private = data['keywords'].include?('singleuser') ? "private='true'" : ""

    # tags to JML rooms *REFACTOR PLEASE*
    use_local_asset = ""
    use_local_asset = data['keywords'].include?('room1') ? "use_local_asset=\"room1\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room2') ? "use_local_asset=\"room2\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room3') ? "use_local_asset=\"room3\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room4') ? "use_local_asset=\"room4\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room5') ? "use_local_asset=\"room5\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room6') ? "use_local_asset=\"room5\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room1_pedestal') ? "use_local_asset=\"room1_pedestal\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room2_pedestal') ? "use_local_asset=\"room2_pedestal\"" : use_local_asset
    use_local_asset = data['keywords'].include?('room2_narrow') ? "use_local_asset=\"room3_narrow\"" : use_local_asset

    objects = objects + "    <object pos=\"0 0 5\" rotation=\"-180 0 180\" lighting=\"false\" collision_id=\"experience\" id=\"experience\" />"

    jml = <<~JML
<FireBoxRoom>
  <Assets>
    #{assets}
  </Assets>
  <Room autogenerate="true" #{use_local_asset} #{private}>
    #{objects}
  </Room>
</FireBoxRoom>
<!-- archive.org hints -->
<a href="#{federate_drive_host}/#{dirPublic}/#{model_file.gsub("#","%23")}"></a> 
    JML
   
    data['description'] = data['description'] ? data['description'] : "your description here\n"
    data['description'] = <<~DESCRIPTION#{data['description']}
<!-- Hi there! Below is autogenerated JanusXR Markup (JML).             -->
<!-- If you want to tweak it, then first disable autogeneration         -->
<!-- How? make sure to set autogenerate to "false" (see room-tag below) -->
<!--                                                                    -->
<!-- JML info:                                                          -->
<!-- https://coderofsalvation.github.io/janus-guide/#/examples/markup   -->
<!-- https://janusxr.org/docs/build/introtojml/index.html               -->

#{jml}
    DESCRIPTION
    File.write("datapackage.json", JSON.pretty_generate(data) )
  end

  html = <<~HTML
    <!DOCTYPE html>
    <html>
    <head>
      <title>janusxr room</title>
    </head>
    <body>
      <script src="https://web.janusvr.com/janusweb.js"></script>
      <janus-viewer>
      #{jml}
      </janus-viewer>

      <!-- map query args as attributes -->
      <script>
      args = new URLSearchParams(document.location.search)
      for( const [k,v] of args.entries()) document.querySelector("Room").setAttribute(k,v)
      </script>

      <!-- archive.org hints -->
      <a href="#{federate_drive_host}/#{model_file.gsub("#","%23")}"></a> 
    </body>
    </html>
  HTML

  File.write('.xrforge/janusxr.html', html)
  File.write('.xrforge/scene.jml', jml)

  XRForge.log("✅ generated scene.jml", logfile)
  XRForge.log("✅ generated janusxr.html", logfile)
  XRForge.log(" ", logfile)

  # tag it!
  if ! data['keywords'].include?('janusxr')
    data['keywords'].push('janusxr')
    File.write("datapackage.json", JSON.pretty_generate(data) )
  end

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