require "prawn"
require "prawn/measurement_extensions"
require "util.rb"
require "text.rb"

class NSFCnP
	@@box_heights = [ 8.66.in, 7.085.in, 5.52.in, 3.97.in, 2.42.in ]
	@@debug = false

	def initialize(me, grants)
		@me = me
		@grants = grants.symbolize_json
	end

	def NSFCnP::commitment_string(record, category)
		# pick out the first commitment field.
		commitment = 
			record
				.fetch(:commitment)
				.fetch(category, 0)
				.to_s
				
		commitment = 
			case commitment
				when String then 
					commitment
						.gsub(/\u00BC/, ".25") # 1/4 symbol
						.gsub(/\u00BD/, ".5")  # 1/2 symbol
						.gsub(/\u00BE/, ".75") # 3/4 symbol
						.split(/, */)
				when Number then ["#{commitment}"]
				when Array then commitment
				else raise "Invalid #{category} commitment for #{record[:title]}: '#{commitment}'"
			end

		(commitment.map { |x| x if x.to_f > 0 }.compact + [0]).first.to_s
	end

	def print
		grants = @grants
		pi_name = @me
		grants.each do |record|
			status = record.fetch(:status, record.fetch("status", :pending))

			puts("Project/Proposal Title: #{record.fetch(:title)}")
			puts("Status of Support: #{status}")
			puts("Proposal/Award Number (if available): #{record.fetch(:agency_id, "n/a")}")
			puts("Source of Support: #{record.fetch(:agency)}")
			puts("Primary Place of Performance: University at Buffalo")
			puts("Project/Proposal Start Date (MM/YYYY) (if available): #{record.fetch(:start)}")
			puts("Project/Proposal End Date (MM/YYYY) (if available): #{record.fetch(:end)}")
			puts("Total Award Amount (including Indirect Costs): $#{record.fetch(:amount)}")
			puts("Person-Month(s) (or Partial Person-Months) Per Year Committed to the Project:")
			record.fetch(:commitment)
					  .fetch(:by_year)
					  .to_a
					  .sort { |a, b| a[0] <=> b[0] }
					  .each do |year, amount|
					  	puts("    #{year} : #{amount}")
					  end
			puts("Overall Objectives: \n#{record.fetch(:summary)}\n\n")



			# puts " * #{record.fetch(:title)} (#{status})"
			# puts "   #{record.fetch(:start)} -- #{record.fetch(:end)}; Calendar: #{NSFCnP::commitment_string(record, :calendar)} mo, School: #{NSFCnP::commitment_string(record, :schoolyear)} mo, Summer: #{NSFCnP::commitment_string(record, :summer)} mo"
			# puts("   Submitted to #{record.fetch(:agency)}"+( then " (#{record.fetch(:agency_id)})" else "" end))

		end
	end

	def render(target)
		grants = @grants
		pi_name = @me
		Prawn::Font::AFM.hide_m17n_warning = true
		Prawn::Document.generate(target,
			background: "lib/NSFCP.png",
			background_scale: 0.5
		) do
			stroke_color 'ff0000' if @@debug
			grants.take_groups(@@box_heights.length)
				   .each.with_index do |page_records, page|
				puts "Rendering Page #{page}"
				start_new_page unless page == 0;

				bounding_box([0.8.in, 8.85.in], width: 2.5.in, height: 0.2.in) do
					text pi_name
					stroke_bounds if @@debug
				end

				page_records.zip(@@box_heights.take(page_records.length)).
					 each do |record, height|
					 	bounding_box([-0.17.in, height], width: 7.85.in, height: 1.59.in) do
					 		stroke_bounds if @@debug

			 				######## Support Type ########
							offset = 
								case record.fetch(:status, record.fetch("status", :pending))
								when :pending, "submitted"  then 2.21.in
								when :current, "accepted"   then 1.16.in
								when :planned, "planned"    then 3.32.in
								when :transfer              then 6.07.in
								else raise "Unknown status: #{record[:support]}"
								end
							# puts "Offset: #{record.fetch(:title)} -> #{offset}; #{record[:status]} -- #{record["status"]}"
							### Make the checkbox ###
							bounding_box([offset,1.57.in], width: 0.2.in, height: 0.2.in) do
								text "X"
							end

							######## Title ########
							bounding_box([0.1.in, 1.20.in], width: 7.6.in, height: 0.38.in) do
								stroke_bounds if @@debug
								text record.fetch(:title)
							end

							######## Agency ########
							bounding_box([1.23.in, 0.8.in], width: 6.47.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text record.fetch(:agency)
							end

							######## Amount ########
							bounding_box([1.5.in, 0.6.in], width: 1.4.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text TextUtils.format_money(record.fetch(:amount), currency: "")
							end

							######## Period ########
							bounding_box([4.7.in, 0.6.in], width: 3.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text "#{record.fetch(:start)} -- #{record.fetch(:end)}"
							end

							######## Location ########
							bounding_box([1.23.in, 0.4.in], width: 6.47.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text record.fetch(:location, "University at Buffalo, Buffalo, NY")
							end

							######## Commitment ########
							commitment = record.fetch(:commitment)
							bounding_box([4.4.in, 0.2.in], width: 0.6.in, height: 0.19.in) do
								stroke_bounds if @@debug

								text NSFCnP::commitment_string(record, :calendar), align: :center
							end
							bounding_box([5.45.in, 0.2.in], width: 0.55.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text NSFCnP::commitment_string(record, :schoolyear), align: :center
							end
							bounding_box([6.4.in, 0.2.in], width: 1.in, height: 0.19.in) do
								stroke_bounds if @@debug
								text NSFCnP::commitment_string(record, :summer), align: :center
							end
					 	end
					 end
			end
		end
	end
end