data-dwh-dbt-project/models/intermediate/xero/int_xero__invoice_line_items.sql

with int_xero__invoices as (select * from {{ ref("int_xero__invoices") }})

select
    i.id_invoice,
    j.id_line_item,
    j.id_item,
    j.item_code,
    j.quantity::numeric,
    j.unit_amount::numeric,
    j.line_amount_local_curr::numeric,
    (j.line_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(
        18, 4
    ) as line_amount_in_gbp,
    case
        when i.line_amount_tax_inclusiveness = 'Inclusive'
        then j.line_amount_local_curr::numeric - j.tax_amount_local_curr::numeric
        when i.line_amount_tax_inclusiveness = 'Exclusive'
        then j.line_amount_local_curr::numeric
        when i.line_amount_tax_inclusiveness = 'NoTax'
        then j.line_amount_local_curr::numeric
        else null
    end as line_amount_wo_taxes_local_curr,
    case
        when i.line_amount_tax_inclusiveness = 'Inclusive'
        then
            (j.line_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(18, 4)
            - (j.tax_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(
                18, 4
            )
        when i.line_amount_tax_inclusiveness = 'Exclusive'
        then
            (j.line_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(18, 4)
        when i.line_amount_tax_inclusiveness = 'NoTax'
        then
            (j.line_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(18, 4)
        else null
    end as line_amount_wo_taxes_in_gbp,
    j.tax_amount_local_curr::numeric,
    (j.tax_amount_local_curr::numeric * i.exchange_rate_to_gbp)::numeric(
        18, 4
    ) as tax_amount_in_gbp,
    j.tax_type,
    i.invoice_currency_iso_4217,
    j.line_description
from int_xero__invoices i
cross join
    lateral(
        select
            (jsonb_array_elements(i.line_items) ->> 'LineItemID') as id_line_item,
            (jsonb_array_elements(i.line_items) -> 'Item') ->> 'ItemID' as id_item,
            (jsonb_array_elements(i.line_items) -> 'Item') ->> 'Code' as item_code,
            (jsonb_array_elements(i.line_items) -> 'Item') ->> 'Name' as item_name,
            (jsonb_array_elements(i.line_items) ->> 'Quantity') as quantity,
            (jsonb_array_elements(i.line_items) ->> 'UnitAmount') as unit_amount,
            (
                jsonb_array_elements(i.line_items) ->> 'LineAmount'
            ) as line_amount_local_curr,
            (
                jsonb_array_elements(i.line_items) ->> 'TaxAmount'
            ) as tax_amount_local_curr,
            (jsonb_array_elements(i.line_items) ->> 'TaxType') as tax_type,
            (jsonb_array_elements(i.line_items) ->> 'Description') as line_description
    ) j