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#!/usr/bin/env ruby
require 'json'
require 'rest-client'
require 'dimensions'
NYPL_API_TOKEN = ENV["NYPL_API_TOKEN"]
NYPL_AUTH = "Token token=\"#{NYPL_API_TOKEN}\""
NYPL_ENDPOINT = "http://api.repo.nypl.org/api/v1/items"
stereo_metadata = JSON.parse(RestClient.get("http://stereo.nypl.org/view/#{ARGV[0]}.json"))
unless stereo_metadata['external_id'] == 0
abort('Image must be from NYPL collections.')
end
digital_id = stereo_metadata['digitalid'].upcase
image_id = JSON.parse(RestClient.get("#{NYPL_ENDPOINT}/local_image_id/#{digital_id}", :Authorization => NYPL_AUTH))
image_uuid = image_id['nyplAPI']['response']['uuid']
image_captures = JSON.parse(RestClient.get("#{NYPL_ENDPOINT}/#{image_uuid}", :Authorization => NYPL_AUTH))
matching_captures = image_captures['nyplAPI']['response']['capture'].select{|c| c['imageID'].upcase == digital_id}
if matching_captures && matching_captures.length > 0
# capture_uuid = matching_captures[0]['uuid']
# capture_details = JSON.parse(RestClient.get("#{NYPL_ENDPOINT}/item_details/#{capture_uuid}", :Authorization => NYPL_AUTH))
highres_url = matching_captures[0]['highResLink']
lowres_url = stereo_metadata['url']
# download images
$stderr.puts "Downloading images..."
`wget -nc -O #{ARGV[0]}.jpg '#{lowres_url}'`
`wget -nc -O #{ARGV[0]}.tif '#{highres_url}'`
# calculate the crop for the original image using multiscale template matching
$stderr.puts "Calculating crop..."
crop_params = `./template_match_multiscale.py --template #{ARGV[0]}.jpg --image #{ARGV[0]}.tif`.chomp
# apply the crop
`convert #{ARGV[0]}.tif -crop #{crop_params} +repage #{ARGV[0]}_cropped.tif`
# calculate dimensions
lowres_dims = Dimensions.dimensions("#{ARGV[0]}.jpg")
highres_dims = Dimensions.dimensions("#{ARGV[0]}_cropped.tif")
# calculate scaling
x_scale = highres_dims[0].to_f / lowres_dims[0].to_f
y_scale = highres_dims[1].to_f / lowres_dims[1].to_f
# calculate scaled dimensions
cropped_width = stereo_metadata['width'] * x_scale
cropped_height = stereo_metadata['height'] * y_scale
x1 = stereo_metadata['x1'] * x_scale
x2 = stereo_metadata['x2'] * x_scale
y1 = stereo_metadata['y1'] * y_scale
y2 = stereo_metadata['y2'] * y_scale
# use the scaled dimensions to split the cropped original into the component images
$stderr.puts "Cropping image..."
`convert #{ARGV[0]}_cropped.tif -crop #{cropped_width}x#{cropped_height}+#{x1}+#{y1} +repage #{ARGV[0]}_0.png`
`convert #{ARGV[0]}_cropped.tif -crop #{cropped_width}x#{cropped_height}+#{x2}+#{y2} +repage #{ARGV[0]}_1.png`
else
puts image_captures.to_json
abort("No matching captures for #{digital_id}")
end
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