For a given TXT file with Omeka item IDs, generate HTML for a text-only version of a Neatline Timeline.

text_timeline.rb

# Using the same query used for your Neatline Timeline, generate a list of Omeka IDs with https://gist.github.com/sheepeeh/10415207
# When script is finished, you will have an HTML file with the same name as your TXT file. It will be ugly, you should probably pretty-print it.

require 'nokogiri'
require 'open-uri'

Item = Struct.new(:id, :title, :date, :link, :year, :flag)

def get_metadata(from_file)
items = []
years = []

# Read lines from target file
	File.readlines(from_file).each do |line|
		begin
			flag = false
			id = line.gsub("\n","")
			
		# NOTE: Subsitute appropriate address for YOUR_OMEKA_URL
			doc = Nokogiri::HTML(open("YOUR_OMEKA_URL/items/show/#{id}"))

			title = doc.css('#show-item-title').text
			date = doc.css('#dublin-core-date .element-text').text
			date = date.gsub("\n","").gsub(" ","")
			year, month, day = date.split('-')
			flag = true if day.nil?
			
			# Convert date strings to date objects for sorting
			day = "01" if day.nil?
			date = [year, month, day].join('-')
			date = DateTime.parse(date)
			date = date.to_date
			datei = date.strftime("%s").to_i
			link = "/items/show/#{id}"
			year = date.strftime('%Y').to_s

			time_item = Item.new(id, title, date, link, year, flag)

			items << time_item
			years << year
		rescue => e
			puts "#{e}: Skipping item #{line}"
			next
		end
	end

	years = years.compact
	years = years.uniq
	years.sort!

	items.sort_by! { |e| e[:date] }

	puts "Items created. Now generating HTML..."

	html = "<div id='text-only'>"
	years.each do |y|
		begin
			html += "<h3>#{y}</h3>"
			html += "<ul>"
			itemy = items.select {|e| e[:year] =~ /#{y}/ }
			itemy.each  do |e|
			    # Revert flagged dates to year + month only.
				if e[:flag] == true
					e[:date] = e[:date].to_s
					year, month, day = e[:date].split ('-')
					e[:date] = [year, month].join('-')
				end
				html += "<li>#{e[:date]}: <a href='#{e[:link]}'>#{e[:title]}</a></li>"
			end
			html += "</ul>"
		rescue => e
			puts "#{e}: Moving to next item."
			next
		end
	end

	html += "</div>"
	
	# Print HTML to file
	fseed = File.basename(from_file,'txt')
	hf = File.open("#{fseed}.html",'a')
	hf.puts html

	puts "Done."
end

# Change to desired file
get_metadata('omeka_ids.txt')