#!/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'

## Updates the 'uri' of an image in a GLTF hash when a matching PNG filename is found.
##
## gltf: a parsed JSON hash from a .gltf file
## png_path: path to the PNG file to embed
##
## returns: true if updated successfully, false if not found
#def update_gltf_image(gltf, png_path)
#  # Get base name (without extension)
#  name = File.basename(png_path, '.png')
#
#  # Find image entry with the same name
#  image_entry = gltf['images']&.find { |img| img['name'] == name }
#
#  unless image_entry
#    warn "No image named '#{name}' found in GLTF"
#    return false
#  end
#
#  # Read and base64-encode the PNG file
#  data = File.binread(png_path)
#  encoded = Base64.strict_encode64(data)
#
#  # Update the URI field with the base64-encoded PNG data URI
#  image_entry['uri'] = "data:image/png;base64,#{encoded}"
#
#  puts "Updated image '#{name}' in GLTF"
#  true
#end


begin

  # Change the directory
  dir = File.dirname(filename)
  Dir.chdir( File.dirname(filename) )
  # Read and parse the JSON file
  data = JSON.parse( File.read( "datapackage.json" ) )

  ext                = File.extname(filename)
  filenameWithoutExt = File.basename(filename, ext)

  if ! XRForge::MODEL_EXT.any?( ext )
    exit(0) # not a 3d file
  end

  logfile = File.join( File.dirname(filename), ".xrforge/log.txt" )
  XRForge.log("✅ generating gltf", logfile)
  gltf_path = ".xrforge/#{filenameWithoutExt}.gltf"
  system("assimp export #{filename} #{gltf_path}")
  system("assimp extract #{filename} | sed 's|/.*/||g'")

  # 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)
    abort("No 'images' array found in #{gltf_path}")
  end

  # Iterate through the images array
  gltf['images'].each_with_index do |img, i|
    name = img['name']
    next unless name && !name.empty?

    old_filename = "website_img#{i}.png"
    new_filename = "#{name}.png"

    if File.exist?(old_filename)
      XRForge.log("✅ Renaming #{old_filename} -> #{new_filename}", logfile)
      File.rename(old_filename, new_filename)
    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