Add automatic generation of financial transactions and links

app/controllers/finance/bank_accounts_controller.rb

@@ -5,6 +5,14 @@ class Finance::BankAccountsController < Finance::BaseController
     redirect_to finance_bank_account_transactions_url(@bank_accounts.first) if @bank_accounts.count == 1
   end
 
+  def assign_unlinked_transactions
+    @bank_account = BankAccount.find(params[:id])
+    count = @bank_account.assign_unlinked_transactions
+    redirect_to finance_bank_account_transactions_url(@bank_account), notice: t('finance.bank_accounts.controller.assign.notice', count: count)
+  rescue => error
+    redirect_to finance_bank_account_transactions_url(@bank_account), alert: t('errors.general_msg', msg: error.message)
+  end
+
   def import
     @bank_account = BankAccount.find(params[:id])
     import_method = @bank_account.find_import_method

app/models/bank_account.rb

@@ -12,4 +12,14 @@ class BankAccount < ApplicationRecord
   # @return [Function] Method wich can be called to import transaction from a bank or nil if unsupported
   def find_import_method
   end
+
+  def assign_unlinked_transactions
+    count = 0
+    bank_transactions.without_financial_link.includes(:supplier, :user).each do |t|
+      if t.assign_to_ordergroup || t.assign_to_invoice
+        count += 1
+      end
+    end
+    count
+  end
 end

app/models/bank_transaction.rb

@@ -33,4 +33,48 @@ class BankTransaction < ApplicationRecord
   def image_url
     'data:image/png;base64,' + Base64.encode64(self.image)
   end
+
+  def assign_to_invoice
+    return false unless supplier
+
+    content = text
+    content += "\n" + reference if reference.present?
+    invoices = supplier.invoices.unpaid.select {|i| content.include? i.number}
+    invoices_sum = invoices.map(&:amount).sum
+    return false if amount != -invoices_sum
+
+    transaction do
+      link = FinancialLink.new
+      invoices.each {|i| i.update_attributes! financial_link: link, paid_on: date }
+      update_attribute :financial_link, link
+    end
+
+    return true
+  end
+
+  def assign_to_ordergroup
+    m = BankTransactionReference.parse(reference)
+    return unless m
+
+    return false if m[:parts].values.sum != amount
+    group = Ordergroup.find_by_id(m[:group])
+    return false unless group
+    usr = m[:user] ? User.find_by_id(m[:user]) : group.users.first
+    return false unless usr
+
+    transaction do
+      note = "ID=#{id} (#{amount})"
+      link = FinancialLink.new
+
+      m[:parts].each do |short, value|
+        ftt = FinancialTransactionType.find_by_name_short(short)
+        return false unless ftt
+        group.add_financial_transaction! value, note, usr, ftt, link if value > 0
+      end
+
+      update_attribute :financial_link, link
+    end
+
+    return true
+  end
 end

app/views/finance/bank_transactions/index.html.haml

@@ -1,6 +1,7 @@
 - title t('.title', name: @bank_account.name, balance: number_to_currency(@bank_account.balance))
 
 - content_for :actionbar do
+  = link_to t('.assign_unlinked_transactions'), assign_unlinked_transactions_finance_bank_account_path(@bank_account), class: 'btn'
   = link_to t('.import_transaction'), import_finance_bank_account_path(@bank_account), class: 'btn btn-primary'
 
 .well.well-small