pdf.info.author   = @company_name
pdf.info.title    = 'Invoice (%s) - %s %s' % [@invoice_number, @client.name, @issued_on.strftime('%m/%d/%Y')]
pdf.info.subject  = @company_name

# This is all presentation stuff that will not be in the database (For now, I suppose)
pdf.margins_in 0.8, 0.5, 0.5, 0.5

text_color = Color::RGB.from_html("#444")
header_color = Color::RGB.from_html("#FFFFFF")
header_shade_color = Color::RGB.from_html('#AAA')
zebra_shade_color = Color::RGB.from_html('#C5DBF7')

table_outer_line_style = PDF::Writer::StrokeStyle.new(0.25, :cap => :butt, :join => :bevel)

# Not crazy about this, but for now it'll do cause it'll work well enough...
pdf.on_start_new_page 1, SerializableProc.new( %q{ |page|
  background_image_data = open(RAILS_ROOT+'/public/images/invoice-background.jpg', "rb") { |file| file.read }
  background_image_info = PDF::Writer::Graphics::ImageInfo.new background_image_data

  page.add_image(
    background_image_data, 
    0, 0, 
    page.page_width, background_image_info.height.to_f, 
    background_image_info
  )
})

pdf.start_page_numbering(
  pdf.left_margin+(pdf.page_width-pdf.left_margin-pdf.right_margin)/2,
  pdf.bottom_margin-pdf.in2pts(0.25), 
  10,
  :center, 
  "Page <PAGENUM> of <TOTALPAGENUM>"
)

pdf.text_render_style 0
pdf.fill_color text_color

# Upper-Right Header
logo_fudge_x = -1*pdf.in2pts(0.24)
logo_fudge_y = pdf.in2pts(0.24)

logo_image_data = open(@company_logo_path, "rb") { |file| file.read }
logo_image_info = PDF::Writer::Graphics::ImageInfo.new logo_image_data

logo_x = pdf.page_width-pdf.right_margin-logo_image_info.width+logo_fudge_x
logo_y = pdf.page_height-pdf.top_margin-logo_image_info.height+logo_fudge_y

pdf.add_image(
  logo_image_data, 
  logo_x, 
  logo_y,
  logo_image_info.width,logo_image_info.height,
  logo_image_info,
  {:type => :external, :target => @company_url}
)

pdf.select_font "Helvetica"
pdf.font_size = 10

company_lines = [
  @company_address1,
  @company_address2,
  "%s, %s %s" % [@company_city,@company_state,@company_zip],
  "",
  "Phone: #{@company_phone}",
  "Fax: #{@company_fax}"
]

company_lines_y = logo_y-pdf.font_height/2
0.upto(company_lines.size) do |i|
  pdf.add_text logo_x, company_lines_y-pdf.font_height*(i+1), company_lines[i]
end

# Upper-Left Header/Content
pdf.select_font "Helvetica-Bold"
pdf.font_size = 22
pdf.text "Invoice", :leading => 0

pdf.select_font "Helvetica"
pdf.font_size = 10
 
header_indent_x_offset = pdf.in2pts(1.15)

pdf.text "\nDate:"
pdf.add_text header_indent_x_offset, pdf.y, @issued_on.strftime('%m/%d/%Y')

pdf.text "\nInvoice:"
pdf.add_text header_indent_x_offset, pdf.y, @invoice_number.to_s

pdf.text "\n"

# Customer Table
PDF::SimpleTable.new do |tab|
  tab.column_order = ['Customer']

  tab.shade_heading_color = header_shade_color
  tab.text_color          = text_color
  tab.heading_color       = header_color
  tab.outer_line_style    = table_outer_line_style
  tab.show_lines          = :outer
  tab.show_headings       = true
  tab.shade_rows          = :none
  tab.orientation         = :right
  tab.position            = :left
  tab.shade_headings      = true
  tab.heading_font_size   = 10
  tab.width               = 250
  tab.row_gap             = 0

  customer_lines = @client.mailing_address
  customer_lines += Array.new(5-customer_lines.size," ") # There's a five-line minimum in the design

  tab.data.replace customer_lines.collect{|line| {'Customer' => line }}
  tab.render_on pdf
end

pdf.text "\n"

# Charges Table:
PDF::SimpleTable.new do |tab|
  tab.column_order = ['item', 'date','description','qty','rate','amount']

  tab.column_order.each do |col| 
    tab.columns[col] = PDF::SimpleTable::Column.new col.capitalize
    tab.columns[col].heading = PDF::SimpleTable::Column::Heading.new { |head| head.justification = :center }
  end

  tab.columns['item'].justification = :center

  tab.columns['date'].width = pdf.in2pts(0.7)
  tab.columns['date'].justification = :center

  tab.columns['amount'].width = pdf.in2pts(0.7)
  tab.columns['amount'].justification = :right

  tab.columns['rate'].width = pdf.in2pts(0.7)
  tab.columns['rate'].justification = :right

  tab.columns['qty'].width = pdf.in2pts(0.6)
  tab.columns['qty'].justification = :right

  tab.shade_heading_color = header_shade_color
  tab.shade_color         = Color::RGB.from_html("#fff")
  tab.shade_color2        = zebra_shade_color
  tab.heading_color       = header_color
  tab.text_color          = text_color
  tab.outer_line_style    = table_outer_line_style
  tab.inner_line_style    = table_outer_line_style
  tab.show_lines        = :outer
  tab.show_headings     = true
  tab.shade_rows        = :striped
  tab.orientation       = :center
  tab.position          = :center
  tab.shade_headings    = true
  tab.heading_font_size = 10
  tab.font_size         = 9
  tab.width             = pdf.page_width - pdf.left_margin - pdf.right_margin

    
  tab.data = @invoice_rows.collect { |line| 
    { 
    'item'        => line[3], 
    'date'        => line[4], 
    'description' => line[5], 
    'qty'         => line[0],
    'rate'        => ('%.2f' % line[1].to_f),
    'amount'    => ('%.2f' % line[2].to_f)
    }
  }

  tab.render_on pdf
end if @invoice_rows.length > 0

# Now we'll add the totals:

pdf.font_size = 10
pdf.text "\n"

totals = [ ['Sub-Total', @invoice.sub_total], ['Tax', @invoice.taxes_total], ['Total', @invoice.grand_total] ].collect do |total|
	# NOTE: This DRY-ly formats the above into nicer-looking/final output strings:
	[ 
		total[0], 
		(' %s$%.2f' % [(total[1].to_f < 0.0 ? '-' : ''), total[1]]).gsub(/(\d)(?=\d{3}+(\.\d*)?$)/, '\1,') 
	]
end

pdf.select_font "Helvetica-Bold"
max_values_width = pdf.text_line_width(totals.find{|total| total[0] == 'Total'}[1], 12)

totals.each do |total|
	total_label, total_value = total

	if total_label == 'Total'
		pdf.select_font "Helvetica-Bold"
		pdf.font_size = 12
	else
		pdf.select_font "Helvetica"
		pdf.font_size = 11
	end

	total_label += ' : '

	total_margin_fudge = pdf.in2pts(0.1)

	# Calc the offsets:
	right_content_edge_x = pdf.page_width - pdf.right_margin - total_margin_fudge
	
	total_value_x = right_content_edge_x - pdf.text_line_width(total_value, pdf.font_size)
	total_label_x = right_content_edge_x - max_values_width - pdf.text_line_width(total_label, pdf.font_size)

	# Write some values:
	pdf.text total_label, :absolute_left => total_label_x

	pdf.add_text total_value_x, pdf.y, total_value
end

# Thank-you Text:
pdf.font_size = 10
pdf.text "\n\n"

pdf.select_font "Helvetica-Bold"

pdf.text @footer_text, :justification => :center