### reports_helper.rb
module ReportsHelper
  module Large
    font_size = 12
    cols = 3
    labels_per_page = 30
    labels_per_col = 10

    marg_x = 72 * 0.19
    marg_y = 72 * 0.5

    cell_x = 72 * 2.63
    cell_y = 72 * 1

    col_pad_x = 72 * 0.19

    col1_x = marg_x
    col2_x = col1_x + cell_x + col_pad_x
    col3_x = col2_x + cell_x + col_pad_x

    cell_pad_x = 72 * 0.13
    cell_pad_y = 72 * 0.25
    cell_line_y = font_size + 2

    def cell_x(col)
    	[col1_x, col2_x, col3_x][col] + cell_pad_x
    end

    def cell_y(row, line)
    	marg_y + ((labels_per_col - row) * cell_y) - cell_pad_y - (line * cell_line_y)
    end

    def add_label(row, col, user, pdf)
    	pdf.text "Name: #{user.full_name}"
    	user.addresses.each do |a|
    		pdf.text a.addr1
    		pdf.text a.addr2 unless a.addr2.blank?
    		if (a.country == "United States" || a.country.blank?)
    			pdf.text "#{a.city}, #{a.state}, #{a.postal_code}"
    		else
    			pdf.text "#{a.city} #{a.state}"
    			pdf.text a.postal_code
    			pdf.text a.country
    		end
    		pdf.text ""
    	end
    end
  end
end

### mailing_labels.pdf.prawn
pdf.font "Helvetica"
pdf.font.size = Large::font_size

pages = @users.length / Large::labels_per_page
pages += 1 if (@users.length % Large::labels_per_page) > 0

0.upto(pages - 1) do |page|
	start = page * Large::labels_per_page
	users_page = @users[start..start + Large::labels_per_page]

	0.upto(Large::LABELS_PER_COL - 1) do |row|
		Large::add_label(row, 0, user_page[row * Large::cols    ], pdf)
		Large::add_label(row, 1, user_page[row * Large::cols + 1], pdf)
		Large::add_label(row, 2, user_page[row * Large::cols + 2], pdf)
	end
	pdf.new_page unless page + 1 == pages
end