README

Invoices module is an extension to Payments module to provide invoices for confirmed payments. You can customize the layout of invoices based on the section below.

For invoice to be generated, user needs to provide an invoice address. This is requested on the success page of the payment and can be changed in the customer zone any time.

Invoices are always generated on the fly - system doesn't store generated PDFs for later use. If the template changes, template of older invoices might change too. Invoice data used for generation are stored at the time of first generation and never change. Therefore the template can change, but data won't.

Due to the EU legislation, users are allowed to request invoice generation (if it wasn't generated automatically) only within 15-day period after the payment was made. Other cases need to be handled manually by you and your accounting team.

Installing module

We recommend using Composer for installation and update management.

composer require remp/crm-invoices-module

Enabling module

Add installed extension to your app/config/config.neon file.

extensions:
	- Crm\InvoicesModule\DI\InvoicesModuleExtension

Scheduled commands

Module doesn't provide any commands, that should be scheduled for execution periodically.

Service commands

Module might provide service commands to be run in the deployed environment. Mostly to handle internal changes and to prevent direct manipulation with the database. You can display required and optional arguments by using --help switch when running the command.

Invoice module provides:

invoice:send: To manually send an invoice based on payment's variable symbol.

Invoice numbering

By default CRM generates invoice numbers with monthly sequences (each month within year has its own sequence) and based on the service delivery date (effectively payment date).

You can override the way how invoice number sequence is generated by adding your own implementation of InvoiceNumberInterface and overriding the default implementation in your config.neon:

services:
	# ...
	invoiceNumber: Crm\FooModule\Repository\InvoiceNumber

Invoice templates

Invoice generator uses .latte template to generate an invoice PDF. By default the module uses simple and generic layout that we prepared. You can see the source of the layout.

In the example you can see that presenter provides you with $invoice variable. Invoice is generated based on payment and reference to invoice is stored as invoice_id attribute of payment. Invoice's reference back to payment is variable_symbol, though it's only indirect and not guaranteed (no foreign keys are present).

Each invoice has a reference to invoice number which is a list of unique generated string identifiers guaranteed to maintain order based on delivery_date for the purposes of accounting. You can read the number by accessing $invoice->invoice_number->number.

Here's the list of attributes invoice provides:

Name	Value	Nullable	Description
id	Integer	no	Internal invoice identifier.
invoice_number_id	Integer	no	Reference to invoice number.
variable_symbol	String	no	Public payment identifier.
buyer_name	String	yes	Name of buyer. Populated from buyer's invoice address.
buyer_address	String	yes	Street of buyer. Populated from buyer's invoice address.
buyer_zip	String	yes	ZIP code of buyer. Populated from buyer's invoice address.
buyer_city	String	yes	City of buyer. Populated from buyer's invoice address.
buyer_country_id	Integer	no	Reference to system country. Populated from buyer's invoice address.
buyer_id	String	yes	Identifier of buyer's company (usually number provided by IRS). Populated from buyer's invoice address.
buyer_tax_id	String	yes	Company's tax identification (usually number provided by IRS). Populated from buyer's invoice address.
buyer_vat_id	String	yes	Company's VAT identification (usually number provided by IRS). Populated from buyer's invoice address.
supplier_name	String	yes	Name of supplier. Populated from application configuration (see `/admin/config-admin`).
supplier_address	String	yes	Street of supplier. Populated from application configuration (see `/admin/config-admin`).
supplier_zip	String	yes	ZIP code of supplier. Populated from application configuration (see `/admin/config-admin`).
supplier_city	String	yes	City of supplier. Populated from application configuration (see `/admin/config-admin`).
supplier_country_id	Integer	no	Reference to system country. Populated from application configuration (see `/admin/config-admin`).
supplier_id	String	yes	Identifier of supplier's company (usually number provided by IRS). Populated from application configuration (see `/admin/config-admin`).
supplier_tax_id	String	yes	Company's tax identification (usually number provided by IRS). Populated from application configuration (see `/admin/config-admin`).
supplier_vat_id	String	yes	Company's VAT identification (usually number provided by IRS). Populated from application configuration (see `/admin/config-admin`).
created_date	DateTime	no	Date when invoice was generated.
delivery_date	DateTime	no	Date when product was delivered to customer.
payment_date	DateTime	no	Date when payment was confirmed.

On top of these, application configuration allows you to set some extra values that can be used in invoice template. You can always create your own config fields within one of your module seeders - see Config seeder of Invoice module as an example.

This configuration values are system wide and can be fetched with $config->get('foo') - replace foo with one of the following options:

Name	Value	Description
supplier_bank_account_number	String	Your bank number.
supplier_bank_name	String	Your bank name.
supplier_iban	String	Your IBAN.
supplier_swift	String	Your Swift/BIC.
contact_email	String	Public contact to your company in case of issues.
business_register_detail	String	Business registration details (i.e. registration file reference)

Invoice items are fetchable with $invoice->related('invoice_items'). Items are generated based on payment items present at the time of invoice first generation. From that point, items are saved separately. Here's the list of attributes each invoice item provides:

Name	Value	Nullable	Description
id	Integer	no	Internal invoice item identifier.
invoice_id	Integer	no	Reference to invoice.
text	String	no	Item text. Populated from payment item name, might have been extended by extra information (e.g. subscription start/end date).
count	Integer	no	Number of items sold.
price	Decimal	no	Unit price of item.
vat	Integer	no	VAT rate used for sell.
currency	String	no	Text-based currency (e.g. EUR).

If you want to use your own layout, prepare your own template with the use of variables described above. Once it's ready, add following snippet to your app/config/config.local.neon file (alter as needed):

invoiceGenerator:
	setup:
		- setTemplateFile('%appDir%/modules/FooModule/templates/invoices/foo.latte')

The snippet tells to invoice generator to use template provided at given path instead of default template.

Attaching invoices to email notifications

PDF invoice is attached by default to each email notification containing reference to a payment (as a parameter in NotificationEvent). In addition, this notification has to be emitted as a result of processing of a specific trigger (Hermes message) by the application. Typically, this happens when a Hermes message triggers a scenario (see ScenariosModule for details) that emits a NotificationEvent (this is done by Email node).

To limit which Hermes messages shall be accepted when attaching an invoice (see PreNotificationEventHandler for implementation details), add the following configuration to your config.local.neon file, listing allowed Hermes message types:

invoicesPreNotificationEventHandler:
    setup:
        - enableForNotificationHermesTypes('new-subscription', 'payment-status-change', 'some-other-hermes-message')