/*

We have different tables computing fees for different line items coming.

The only difference between these tables is what Xero Line Items are we looking
into. To avoid copying the same logic multiple times, we created this macro.

*/
{% 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 %}