#!/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/somefile.xxx>"
  exit 1
end

filename = ARGV[0]

require 'base64'
require 'json'

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" )
  update = false

  data['resources'].each do |resource|
    ext                = File.extname(resource['path'])
    filenameWithoutExt = File.basename(resource['path'], ext)
    if ! XRForge::MODEL_EXT.any?( ext )
      next # skip unknown 3d files
    end
    if ! resource['path'].match(/^[a-zA-Z0-9]/) 
      next # skip filenames like '_generated.glb' e.g. (produced by hooks)
    end

    XRForge.log("✅ compiling textures", logfile)
    gltf_path        = ".xrforge/#{filenameWithoutExt}.gltf"

    # Read and parse the GLTF JSON
    gltf = JSON.parse(File.read(gltf_path))

    # Ensure images section exists
    unless gltf['images'] && gltf['images'].is_a?(Array)
      XRForge.log("✅ No 'images' array found in #{gltf_path}",logfile)
      next
    end

    # Iterate through the images array
    gltf['images'].each_with_index do |img, i|
      new_filename = ""
      new_filename = "#{dir}/#{filenameWithoutExt}_img#{i}.png"

      # move file to modeldirectory (but dont overwrite if user overwrite it)
      XRForge.log("🤔 checking #{new_filename}",logfile)
      if File.exist?(new_filename)
        XRForge.log("✅ importing #{new_filename} -> #{resource['path']}",logfile)
        img['uri'] = new_filename # NOTE: editing uri will cause assimp to drop image['name'] when exporting :/
        update = true
      end
    end
    if update
      File.write( gltf_path, JSON.pretty_generate(gltf) )
      XRForge.log("✅ writing #{resource['path']}",logfile)
      system("assimp export #{gltf_path} #{resource['path']} --embed-textures")
    end
  end

  XRForge.log(" ", logfile)

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