with
    int_xero__invoice_line_items as (
        select * from {{ ref("int_xero__invoice_line_items") }}
    ),
    int_xero__invoices as (select * from {{ ref("int_xero__invoices") }}),
    int_xero__credit_note_line_items as (
        select * from {{ ref("int_xero__credit_note_line_items") }}
    ),
    int_xero__credit_notes as (select * from {{ ref("int_xero__credit_notes") }}),
    int_xero__contacts as (select * from {{ ref("int_xero__contacts") }})
select
    ili.id_line_item as id_line_item,
    ili.id_item as id_item,
    'invoice' as document_class,
    ili.id_account,
    ili.account_code,
    ili.account_name,
    ili.item_code as item_code,
    ili.quantity as quantity,
    ili.unit_amount as unit_amount,
    ili.line_amount_local_curr as line_amount_local_curr,
    ili.line_amount_in_gbp as line_amount_in_gbp,
    ili.line_amount_wo_taxes_local_curr,
    ili.line_amount_wo_taxes_in_gbp,
    ili.tax_amount_local_curr as tax_amount_local_curr,
    ili.tax_amount_in_gbp as tax_amount_in_gbp,
    ili.tax_type as tax_type,
    ili.line_description as line_description,

    i.id_invoice as id_document,
    i.reference as reference,
    i.invoice_number as document_number,
    i.invoice_issued_at_utc as document_issued_at_utc,
    i.invoice_issued_date_utc as document_issued_date_utc,
    i.invoice_type as document_type,
    i.invoice_currency_iso_4217 as document_currency_iso_4217,
    i.exchange_rate_to_gbp as exchange_rate_to_gbp,
    i.invoice_status as document_status,
    i.line_amount_tax_inclusiveness as line_amount_tax_inclusiveness,
    i.total_amount_local_curr as header_total_amount_local_curr,
    i.total_amount_in_gbp as header_total_amount_in_gbp,
    i.total_amount_wo_tax_local_curr as header_total_amount_wo_tax_local_curr,
    i.total_amount_wo_tax_in_gbp as header_total_amount_wo_tax_in_gbp,
    i.total_tax_local_curr as header_total_tax_local_curr,
    i.total_tax_in_gbp as header_total_tax_in_gbp,
    i.total_due_local_curr as header_total_due_local_curr,
    i.total_due_in_gbp as header_total_due_in_gbp,

    c.id_contact as id_contact,
    c.id_deal as id_deal,
    c.contact_name as contact_name

from int_xero__invoice_line_items ili
left join int_xero__invoices i on i.id_invoice = ili.id_invoice
left join int_xero__contacts c on c.id_contact = i.id_contact

union all

select

    cnli.id_line_item,
    cnli.id_item,
    'credit note' as document_class,
    cnli.id_account,
    cnli.account_code,
    cnli.account_name,
    cnli.item_code,
    cnli.quantity,
    cnli.unit_amount,
    -- We multiply all credit amounts by -1 so aggregations with
    -- invoicing side work the way you would expect them to
    cnli.line_amount_local_curr * -1,
    cnli.line_amount_in_gbp * -1,
    cnli.line_amount_wo_taxes_local_curr * -1,
    cnli.line_amount_wo_taxes_in_gbp * -1,
    cnli.tax_amount_local_curr * -1,
    cnli.tax_amount_in_gbp * -1,
    cnli.tax_type,
    cnli.line_description,

    cn.id_credit_note,
    cn.reference,
    cn.credit_note_number,
    cn.credit_note_issued_at_utc,
    cn.credit_note_issued_date_utc,
    cn.credit_note_type,
    cn.credit_note_currency_iso_4217,
    cn.exchange_rate_to_gbp,
    cn.credit_note_status,
    cn.line_amount_tax_inclusiveness,
    cn.total_amount_local_curr * -1,
    cn.total_amount_in_gbp * -1,
    cn.subtotal_local_curr * -1,
    cn.subtotal_in_gbp * -1,
    cn.total_tax_local_curr * -1,
    cn.total_tax_in_gbp * -1,
    cn.remaining_credit_local_curr * -1,
    cn.remaining_credit_in_gbp * -1,

    c.id_contact,
    c.id_deal,
    c.contact_name

from int_xero__credit_note_line_items cnli
left join int_xero__credit_notes cn on cn.id_credit_note = cnli.id_credit_note
left join int_xero__contacts c on c.id_contact = cn.id_contact