Add invoices

.gitignore

@@ -12,3 +12,4 @@
 *.o
 *.a
 mkmf.log
+.DS_Store

CHANGELOG.md

@@ -0,0 +1,3 @@
+### 1.0.0
+
+* [NEW] Invoices!

README.md

@@ -4,7 +4,7 @@
 
 Receipts for your Rails application that works with any payment provider.
 
-Check out an [example PDF receipt](https://github.com/excid3/receipts/blob/master/examples/receipt.pdf?raw=true)
+Check out the [example receipt](https://github.com/excid3/receipts/blob/master/examples/receipt.pdf?raw=true) and [example invoice](https://github.com/excid3/receipts/blob/master/examples/invoice.pdf?raw=true) PDFs.
 
 ## Installation
 
@@ -170,6 +170,49 @@ resources :charges
 <%= link_to "Download Receipt", charge_path(@charge, format: :pdf) %>
 ```
 
+## Invoices
+
+Invoices follow the exact same set of steps as above, with a few minor changes and have a few extra arguments you can use:
+
+* `issue_date` - Date the invoice was issued
+
+* `due_date` - Date the invoice payment is due
+
+* `status` - A status for the invoice (Pending, Paid, etc)
+
+* `bill_to` - A string or Array of lines with billing details
+
+You can also use line_items to flexibly generate and display the table with items in it, including subtotal, taxes, and total amount. 
+
+```ruby
+  Receipts::Invoice.new(
+    id: "123",
+    issue_date: Date.today,
+    due_date: Date.today + 30,
+    status: "<b><color rgb='#5eba7d'>PAID</color></b>",
+    bill_to: [
+      "GoRails, LLC",
+      "Address",
+      "City, State Zipcode",
+      nil,
+      "[email protected]",
+    ],
+    company: {
+      name: "GoRails, LLC",
+      address: "123 Fake Street\nNew York City, NY 10012",
+      email: "[email protected]",
+      logo: File.expand_path("./examples/gorails.png")
+    },
+    line_items: [
+      ["<b>Item</b>", "<b>Unit Cost</b>", "<b>Quantity</b>", "<b>Amount</b>"],
+      ["GoRails Subscription", "$19.00", "1", "$19.00"],
+      [nil, nil, "Subtotal", "$19.00"],
+      [nil, nil, "Tax Rate", "0%"],
+      [nil, nil, "Total", "$19.00"],
+    ],
+  )
+```
+
 ## Contributing
 
 1. Fork it ( https://github.com/[my-github-username]/receipts/fork )

Rakefile

@@ -10,3 +10,58 @@ task :test => :spec
 task :console do
   exec "irb -r receipts -I ./lib"
 end
+
+task :receipt do
+  require "./lib/receipts"
+
+  Receipts::Receipt.new(
+    id: "123",
+    subheading: "RECEIPT FOR CHARGE #1",
+    product: "GoRails",
+    company: {
+      name: "GoRails, LLC",
+      address: "123 Fake Street\nNew York City, NY 10012",
+      email: "[email protected]",
+      logo: File.expand_path("./examples/gorails.png")
+    },
+    line_items: [
+      ["Date",           Time.now.to_s],
+      ["Account Billed", "Example User ([email protected])"],
+      ["Product",        "GoRails"],
+      ["Amount",         "$19.00"],
+      ["Charged to",     "Visa (**** **** **** 1234)"],
+      ["Transaction ID", "123456"]
+    ],
+  ).render_file "examples/receipt.pdf"
+end
+
+task :invoice do
+  require "./lib/receipts"
+
+  Receipts::Invoice.new(
+    id: "123",
+    issue_date: Date.today,
+    due_date: Date.today + 30,
+    status: "<b><color rgb='#5eba7d'>PAID</color></b>",
+    bill_to: [
+      "GoRails, LLC",
+      "Address",
+      "City, State Zipcode",
+      nil,
+      "[email protected]",
+    ],
+    company: {
+      name: "GoRails, LLC",
+      address: "123 Fake Street\nNew York City, NY 10012",
+      email: "[email protected]",
+      logo: File.expand_path("./examples/gorails.png")
+    },
+    line_items: [
+      ["<b>Item</b>", "<b>Unit Cost</b>", "<b>Quantity</b>", "<b>Amount</b>"],
+      ["GoRails Subscription", "$19.00", "1", "$19.00"],
+      [nil, nil, "Subtotal", "$19.00"],
+      [nil, nil, "Tax Rate", "0%"],
+      [nil, nil, "Amount Due", "$19.00"],
+    ],
+  ).render_file "examples/invoice.pdf"
+end

lib/receipts.rb

@@ -1,2 +1,3 @@
 require "receipts/version"
 require "receipts/receipt"
+require "receipts/invoice"

lib/receipts/invoice.rb

@@ -0,0 +1,123 @@
+require 'prawn'
+require 'prawn/table'
+
+module Receipts
+  class Invoice < Prawn::Document
+    attr_reader :attributes, :id, :company, :custom_font, :line_items, :logo, :message, :product, :subheading, :bill_to, :issue_date, :due_date, :status
+
+    def initialize(attributes)
+      @attributes  = attributes
+      @id          = attributes.fetch(:id)
+      @company     = attributes.fetch(:company)
+      @line_items  = attributes.fetch(:line_items)
+      @custom_font = attributes.fetch(:font, {})
+      @message     = attributes.fetch(:message) { default_message }
+      @subheading  = attributes.fetch(:subheading) { default_subheading }
+      @bill_to     = Array(attributes.fetch(:bill_to)).join("\n")
+      @issue_date  = attributes.fetch(:issue_date)
+      @due_date    = attributes.fetch(:due_date)
+      @status      = attributes.fetch(:status)
+
+      super(margin: 0)
+
+      setup_fonts if custom_font.any?
+      generate
+    end
+
+    private
+
+      def default_message
+        "For questions, contact us anytime at <color rgb='326d92'><link href='mailto:#{company.fetch(:email)}?subject=Charge ##{id}'><b>#{company.fetch(:email)}</b></link></color>."
+      end
+
+      def default_subheading
+        "INVOICE #%{id}"
+      end
+
+      def setup_fonts
+        font_families.update "Primary" => custom_font
+        font "Primary"
+      end
+
+      def generate
+        bounding_box [0, 792], width: 612, height: 792 do
+          bounding_box [85, 792], width: 442, height: 792 do
+            header
+            charge_details
+            footer
+          end
+        end
+      end
+
+      def header
+        move_down 60
+
+        logo_path = company.fetch(:logo, '')
+
+        if logo_path.empty?
+          move_down 32
+        else
+          image open(logo_path), height: 32
+        end
+
+        move_down 8
+        label (subheading % {id: id})
+
+        move_down 10
+
+        # Cache the Y value so we can have both boxes at the same height
+        top = y
+        bounding_box([0, y], width: 200) do
+          label "BILL TO"
+
+          move_down 5
+          text_box bill_to, at: [0, cursor], width: 200, height: 75, inline_format: true, size: 10, leading: 4, overflow: :shrink_to_fit
+
+        end
+
+        bounding_box([250, top], width: 200) do
+          label "INVOICE DATE"
+
+          move_down 5
+          text issue_date.to_s, inline_format: true, size: 12, leading: 4
+
+          move_down 10
+          label "DUE DATE"
+
+          move_down 5
+          text due_date.to_s, inline_format: true, size: 12, leading: 4
+
+          move_down 10
+          label "STATUS"
+
+          move_down 5
+          text status, inline_format: true, size: 12, leading: 4
+        end
+      end
+
+      def charge_details
+        move_down 30
+
+        borders = line_items.length - 2
+
+        table(line_items, cell_style: { border_color: 'cccccc', inline_format: true }) do
+          cells.padding = 12
+          cells.borders = []
+          row(0..borders).borders = [:bottom]
+        end
+      end
+
+      def footer
+        move_down 30
+        text message, inline_format: true, size: 12, leading: 4
+
+        move_down 30
+        text company.fetch(:name), inline_format: true
+        text "<color rgb='888888'>#{company.fetch(:address)}</color>", inline_format: true
+      end
+
+      def label(text)
+        text "<color rgb='a6a6a6'>#{text}</color>", inline_format: true, size: 8
+      end
+  end
+end

lib/receipts/receipt.rb

@@ -68,7 +68,7 @@ def charge_details
 
         borders = line_items.length - 2
 
-        table(line_items, cell_style: { border_color: 'cccccc' }) do
+        table(line_items, cell_style: { border_color: 'cccccc', inline_format: true }) do
           cells.padding = 12
           cells.borders = []
           row(0..borders).borders = [:bottom]

lib/receipts/version.rb

@@ -1,3 +1,3 @@
 module Receipts
-  VERSION = "0.2.3"
+  VERSION = "1.0.0"
 end