add mailer relevant files, add pdf relevant files and confgurations for invoice generation and sending

app/controllers/concerns/send_group_order_invoice_pdf.rb

@@ -0,0 +1,12 @@
+module Concerns::SendGroupOrderInvoicePdf
+  extend ActiveSupport::Concern
+
+  protected
+
+  def send_group_order_invoice_pdf group_order_invoice
+    invoice_data = group_order_invoice.load_data_for_invoice
+    invoice_data[:title] = "Rechnung für " + invoice_data[:supplier] # TODO Internationalise und load_data rausschmeißen
+    pdf = GroupOrderInvoicePdf.new group_order_invoice.load_data_for_invoice
+    send_data pdf.to_pdf, filename: pdf.filename, type: 'application/pdf'
+  end
+end

app/documents/group_order_invoice_pdf.rb

@@ -0,0 +1,142 @@
+class GroupOrderInvoicePdf < RenderPDF
+  def filename
+    I18n.t('documents.group_order_invoice_pdf.filename', :number => @options[:invoice_number]) + '.pdf'
+  end
+
+  def title
+    I18n.t('documents.group_order_invoice_pdf.title', :supplier => @options[:supplier])
+  end
+
+  def body
+    contact = FoodsoftConfig[:contact].symbolize_keys
+    ordergroup = @options[:ordergroup]
+
+    # From paragraph
+    bounding_box [margin_box.right - 200, margin_box.top-20], width: 200 do
+      text  I18n.t('documents.group_order_invoice_pdf.invoicer')
+      move_down 7
+      text FoodsoftConfig[:name], size: fontsize(9), align: :left
+      move_down 5
+      text contact[:street], size: fontsize(9), align: :left
+      move_down 5
+      text "#{contact[:zip_code]} #{contact[:city]}", size: fontsize(9), align: :left
+      move_down 5
+      unless contact[:phone].blank?
+        text "#{Supplier.human_attribute_name :phone}: #{contact[:phone]}", size: fontsize(9), align: :left
+        move_down 5
+      end
+      unless contact[:email].blank?
+        text "#{Supplier.human_attribute_name :email}: #{contact[:email]}", size: fontsize(9), align: :left
+      end
+      move_down 5
+      text I18n.t('documents.group_order_invoice_pdf.tax_number', :number => @options[:tax_number]), size: fontsize(9), align: :left
+    end
+
+
+    # Receiving Ordergroup
+    bounding_box [margin_box.left, margin_box.top - 20], width: 200 do
+      text  I18n.t('documents.group_order_invoice_pdf.invoicee')
+      move_down 7
+      text I18n.t('documents.group_order_invoice_pdf.ordergroup.name', ordergroup: ordergroup.name.to_s ), size: fontsize(9)
+      move_down 5
+      if ordergroup.contact_address
+        text I18n.t('documents.group_order_invoice_pdf.ordergroup.contact_address', contact_address: ordergroup.contact_address.to_s ), size: fontsize(9)
+        move_down 5
+      end
+      if ordergroup.contact_phone
+        text I18n.t('documents.group_order_invoice_pdf.ordergroup.contact_phone', contact_phone: ordergroup.contact_phone.to_s ), size: fontsize(9)
+        move_down 5
+      end
+    end
+
+    #invoice Date and nnvoice number
+    bounding_box [margin_box.right - 200, margin_box.top - 150], width: 200 do
+      text I18n.t('documents.group_order_invoice_pdf.invoice_date', invoice_date: @options[:invoice_date].strftime(I18n.t('date.formats.default'))), align: :left
+      move_down 5
+      text I18n.t('documents.group_order_invoice_pdf.invoice_number', invoice_number: @options[:invoice_number]), align: :left
+    end
+
+    move_down 15
+
+    # kind of the "body" of the invoice
+    text I18n.t('documents.group_order_invoice_pdf.payment_method', payment_method: @options[:payment_method])
+    move_down 15
+    text I18n.t('documents.group_order_invoice_pdf.table_headline')
+    move_down 5
+
+    #------------- Table Data -----------------------
+    total_gross = 0
+    total_net = 0
+    # Articles
+
+    tax_hash_net = Hash.new(0) #for summing up article net prices grouped into vat percentage
+    tax_hash_gross = Hash.new(0) #same here with gross prices
+
+    group_order = GroupOrder.find(@options[:group_order].id)
+    marge = FoodsoftConfig[:price_markup]
+
+    # data table looks different when price_markup > 0
+    if marge == 0
+      data = [I18n.t('documents.group_order_invoice_pdf.no_price_markup_rows')]
+    else
+      data = [I18n.t('documents.group_order_invoice_pdf.price_markup_rows', marge: marge)]
+    end
+    goa_tax_hash = GroupOrderArticle.where(group_order_id: group_order.id).find_each.group_by {|oat| oat.order_article.price.tax}
+    goa_tax_hash.each do |tax, group_order_articles|
+      group_order_articles.each do |goa|
+        # if no unit is received, nothing is to be charged
+        next if goa.result.to_i == 0
+        order_article = goa.order_article
+        goa_total_net = goa.result * order_article.price.price
+        goa_total_gross = goa.result * order_article.price.gross_price
+        data << [order_article.article.name,
+          goa.result.to_i,
+          number_to_currency(order_article.price.price),
+          number_to_currency(goa_total_net),
+          tax.to_s + '%',
+          number_to_currency(goa.total_price)]
+          tax_hash_net[tax.to_i] += goa_total_net
+          tax_hash_gross[tax.to_i] += goa_total_gross
+          total_net += goa_total_net
+          total_gross += goa_total_gross
+      end
+    end
+
+    # Two separate tables for sum and individual data
+    # article information + data
+    table data, cell_style: { size: fontsize(8), overflow: :shrink_to_fit } do |table|
+      table.header = true
+      table.position= :center
+      table.cells.border_width = 1
+      table.cells.border_color = '666666'
+
+      table.row(0).column(1).width = 40
+      table.row(0).border_bottom_width = 2
+      table.columns(1).align = :right
+      table.columns(1..6).align = :right
+    end
+
+    sum = []
+    sum << [nil, nil, nil, nil, I18n.t('documents.group_order_invoice_pdf.sum_to_pay_net'), number_to_currency(total_net)]
+    tax_hash_net.keys.each do |tax|
+      sum << [nil,nil,nil,nil, I18n.t('documents.group_order_invoice_pdf.tax_included', tax: tax), number_to_currency(tax_hash_gross[tax] - tax_hash_net[tax])]
+    end
+    unless marge == 0
+      sum << [nil, nil, nil, nil, I18n.t('documents.group_order_invoice_pdf.markup_included', marge: marge), number_to_currency(total_gross * marge/100.0)]
+    end
+    end_sum = total_gross * (1 + marge/100.0)
+    sum << [nil, nil, nil, nil, I18n.t('documents.group_order_invoice_pdf.sum_to_pay_gross'), number_to_currency(end_sum)]
+    # table for sum
+      table sum, position: :right, cell_style: { size: fontsize(8), overflow: :shrink_to_fit } do |table|
+      sum.length.times do |count|
+        table.row(count).columns(0..5).borders = []
+      end
+      table.row(sum.length-1).columns(0..4).borders = []
+      table.row(sum.length-1).border_bottom_width = 2
+      table.row(sum.length-1).columns(5).borders = [:bottom]
+
+    end
+
+    move_down 15
+  end
+end

app/jobs/notify_group_order_invoice_job.rb

@@ -0,0 +1,10 @@
+class NotifyGroupOrderInvoiceJob < ApplicationJob
+  def perform(group_order_invoice)
+    ordergroup = group_order_invoice.group_order.ordergroup
+    ordergroup.users.each do |user|
+      Mailer.deliver_now_with_user_locale user do
+        Mailer.group_order_invoice(group_order_invoice, user)
+      end
+    end
+  end
+end

app/mailers/mailer.rb

@@ -51,6 +51,19 @@ class Mailer < ActionMailer::Base
          subject: I18n.t('mailer.welcome.subject')
   end
 
+  # Sends automatically generated invoicesfor group orders to ordergroup members
+  def group_order_invoice(group_order_invoice, user)
+    @user = user
+    @group_order_invoice = group_order_invoice
+    @group_order = group_order_invoice.group_order
+    @supplier = @group_order.order.supplier.name
+    @group = @group_order.ordergroup
+    add_group_order_invoice_attachments(group_order_invoice)
+    mail to: user,
+         subject: I18n.t('mailer.group_order_invoice.subject', group: @group.name, supplier: @supplier)
+  end
+
+
   # Sends order result for specific Ordergroup
   def order_result(user, group_order)
     @order        = group_order.order
@@ -168,6 +181,11 @@ class Mailer < ActionMailer::Base
     attachments['order.csv'] = OrderCsv.new(order, options).to_csv
   end
 
+  def add_group_order_invoice_attachments(group_order_invoice)
+    attachment_name = group_order_invoice.name + '.pdf'
+    attachments[attachment_name] = GroupOrderInvoicePdf.new(group_order_invoice.load_data_for_invoice).to_pdf
+  end
+
   # separate method to allow plugins to mess with the text
   def additonal_welcome_text(user)
   end

app/views/mailer/group_order_invoice.text.haml

@@ -0,0 +1 @@
+= raw t '.text', group: @group.name, supplier: @supplier , foodcoop: FoodsoftConfig[:name]