macro logic, need to clean a bit

macros/fee_model_macro.sql

@@ -0,0 +1,60 @@
+{% macro generate_xero_net_fees_model(item_codes_to_include) %}
+
+    {% set relevant_document_statuses = "('PAID', 'AUTHORISED')" %}
+
+    with
+        xero__invoice_line_items as (
+            select * from {{ ref("xero__invoice_line_items") }}
+        ),
+        xero__invoices as (select * from {{ ref("xero__invoices") }}),
+        xero__credit_note_line_items as (
+            select * from {{ ref("xero__credit_note_line_items") }}
+        ),
+        xero__credit_notes as (select * from {{ ref("xero__credit_notes") }}),
+        booking_fees_invoiced as (
+            select
+                extract(year from i.invoice_issued_date_utc) as invoice_issued_year,
+                extract(month from i.invoice_issued_date_utc) as invoice_issued_month,
+                sum(ili.line_amount_wo_taxes_in_gbp) as fees_invoiced
+            from xero__invoice_line_items ili
+            left join xero__invoices i on i.id_invoice = ili.id_invoice
+            where
+                i.invoice_status in {{ relevant_document_statuses }}
+                and ili.item_code in {{ item_codes_to_include }}
+            group by
+                extract(year from i.invoice_issued_date_utc),
+                extract(month from i.invoice_issued_date_utc)
+        ),
+        booking_fees_credited as (
+            select
+                extract(
+                    year from cn.credit_note_issued_date_utc
+                ) as credit_note_issued_year,
+                extract(
+                    month from cn.credit_note_issued_date_utc
+                ) as credit_note_issued_month,
+                sum(cnli.line_amount_wo_taxes_in_gbp) as fees_credited
+            from reporting.xero__credit_note_line_items cnli
+            left join
+                reporting.xero__credit_notes cn
+                on cn.id_credit_note = cnli.id_credit_note
+            where
+                cn.credit_note_status in {{ relevant_document_statuses }}
+                and cnli.item_code in {{ item_codes_to_include }}
+            group by
+                extract(year from cn.credit_note_issued_date_utc),
+                extract(month from cn.credit_note_issued_date_utc)
+        )
+    select
+        i.invoice_issued_year as issued_year,
+        i.invoice_issued_month as issued_month,
+        coalesce(i.fees_invoiced, 0) as fees_invoiced,
+        coalesce(c.fees_credited, 0) as fees_credited,
+        (coalesce(i.fees_invoiced, 0) - coalesce(c.fees_credited, 0)) as net_fees
+    from booking_fees_invoiced i
+    left join
+        booking_fees_credited c
+        on i.invoice_issued_year = c.credit_note_issued_year
+        and i.invoice_issued_month = c.credit_note_issued_month
+
+{% endmacro %}