Merged PR 5171: First version of Guest Product Payments

# Description

First model for Guest Product Payments. It only contains CIH from Verification Payments (so, the "old" CIH).

Some notes:
* It does not handle taxes computation.
* It converts guest product name to upper case, as the guest product tables are in upper case. I also apply it for payment status, as well as an UNKNOWN status for whenever it's null - we'd need to consider this for the rest of the refactor.
* Computation is placed within a CTE. This is intended since at some point this will include also Guest Product Payments that come from Guest Product related tables.
* Enhanced documentation with respect to Verification Payments V2.

Audit performed:

```
-- THIS GOES INTO AN AUDIT FILE
{% set old_query %}
  select
    *
  from dwh_hybrid.intermediate.int_core__guest_product_payments
{% endset %}

{% set new_query %}
  select
    id_verification_to_payment,
    id_payment,
    is_refundable,
    created_at_utc,
    updated_at_utc,
    payment_due_at_utc,
    payment_due_date_utc,
    payment_paid_at_utc,
    payment_paid_date_utc,
    payment_reference,
    refund_due_at_utc,
    refund_due_date_utc,
    payment_refunded_at_utc,
    payment_refunded_date_utc,
    refund_payment_reference,
    id_user_host,
    id_guest_user as id_user_guest,
    id_verification,
    id_verification_request,
    upper(verification_payment_type) as guest_product_name,
    currency,
    total_amount_in_txn_currency,
    total_amount_in_gbp,
    coalesce(upper(payment_status),'UNKNOWN') as payment_status,
    notes
  from dwh_hybrid.intermediate.int_core__verification_payments_v2
  where verification_payment_type = 'CheckInCover'
{% endset %}

{{
    audit_helper.compare_and_classify_query_results(
        old_query,
        new_query,
        primary_key_columns=["id_verification_to_payment"],
        columns=[
            "id_verification_to_payment",
            "id_payment",
            "is_refundable",
            "created_at_utc",
            "updated_at_utc",
            "payment_due_at_utc",
            "payment_due_date_utc",
            "payment_paid_at_utc",
            "payment_paid_date_utc",
            "payment_reference",
            "refund_due_at_utc",
            "refund_due_date_utc",
            "payment_refunded_at_utc",
            "payment_refunded_date_utc",
            "refund_payment_reference",
            "id_user_host",
            "id_user_guest",
            "id_verification",
            "id_verification_request",
            "guest_product_name",
            "currency",
            "total_amount_in_txn_currency",
            "total_amount_in_gbp",
            "payment_status",
            "notes",
        ],
        sample_limit=10000000,
    )
}}
```

# Checklist

- [X] The edited models and dependants run properly with production data.
- [X] The edited models are sufficiently documented.
- [X] The edited models contain PK tests, and I've ran and passed them.
- [X] I have checked for DRY opportunities with other models ...

models/intermediate/core/int_core__guest_product_payments.sql

@@ -0,0 +1,85 @@
+{% set check_in_cover_as_id_verification_payment = "5" %}
+{% set cut_off_date_check_in_cover_as_id_verification_payment = "'2025-06-08'" %}
+
+with
+    stg_core__verification_to_payment as (
+        select * from {{ ref("stg_core__verification_to_payment") }}
+    ),
+    stg_core__verification_payment_type as (
+        select * from {{ ref("stg_core__verification_payment_type") }}
+    ),
+    stg_core__verification as (select * from {{ ref("stg_core__verification") }}),
+    stg_core__verification_request as (
+        select * from {{ ref("stg_core__verification_request") }}
+    ),
+    stg_core__payment as (select * from {{ ref("stg_core__payment") }}),
+    stg_core__payment_status as (select * from {{ ref("stg_core__payment_status") }}),
+    int_simple_exchange_rates as (select * from {{ ref("int_simple_exchange_rates") }}),
+    guest_product_payments_from_verification_payments as (
+        select
+            vtp.id_verification_to_payment as id_guest_product_payment,
+            vtp.id_payment,
+            vtp.id_verification_to_payment,
+            vtp.is_refundable,
+            vtp.created_at_utc,
+            vtp.updated_at_utc,
+            vtp.payment_due_at_utc,
+            vtp.payment_due_date_utc,
+            p.paid_at_utc as payment_paid_at_utc,
+            p.paid_date_utc as payment_paid_date_utc,
+            p.payment_reference,
+            vtp.refund_due_at_utc,
+            vtp.refund_due_date_utc,
+            p.refunded_at_utc as payment_refunded_at_utc,
+            p.refunded_date_utc as payment_refunded_date_utc,
+            p.refund_payment_reference,
+            vr.id_user_host,
+            vtp.id_guest_user as id_user_guest,
+            vtp.id_verification,
+            v.id_verification_request,
+            upper(vpt.verification_payment_type) as guest_product_name,
+            'VERIFICATION_PAYMENT' as guest_product_payment_source,
+            p.currency,
+            p.amount as total_amount_in_txn_currency,
+            (p.amount * r.rate)::decimal(19, 4) as total_amount_in_gbp,
+            upper(coalesce(ps.payment_status, 'UNKNOWN')) as payment_status,
+            p.notes
+        from stg_core__verification_to_payment vtp
+        inner join
+            stg_core__verification_payment_type vpt
+            on vtp.id_verification_payment_type = vpt.id_verification_payment_type
+        left join stg_core__payment p on vtp.id_payment = p.id_payment
+        inner join
+            stg_core__payment_status ps on p.id_payment_status = ps.id_payment_status
+        inner join
+            int_simple_exchange_rates r
+            on vtp.payment_due_date_utc = r.rate_date_utc
+            and p.currency = r.from_currency
+            and r.to_currency = 'GBP'
+        left join stg_core__verification v on vtp.id_verification = v.id_verification
+        left join
+            stg_core__verification_request vr
+            on v.id_verification_request = vr.id_verification_request
+        where
+            vtp.id_verification_payment_type
+            = {{ check_in_cover_as_id_verification_payment }}
+            -- Following is to enhance the performance of the query once Guest Product
+            -- payment data follows exclusively the dedicated Guest Product models
+            and v.created_date_utc
+            <= date({{ cut_off_date_check_in_cover_as_id_verification_payment }})
+            and vtp.created_date_utc
+            <= date({{ cut_off_date_check_in_cover_as_id_verification_payment }})
+            and p.created_date_utc
+            <= date({{ cut_off_date_check_in_cover_as_id_verification_payment }})
+            and vr.created_date_utc
+            <= date({{ cut_off_date_check_in_cover_as_id_verification_payment }})
+    )
+select *
+from
+    guest_product_payments_from_verification_payments
+    -- This model is expecting to have provide Guest Product Payment data for 
+    -- both old Check-in Cover and new Guest Product models. At the moment,
+    -- the data is only provided for the "old" Check-in Cover. Once the Guest Product
+    -- models are in place, we expect to have here a new CTE that is unioned with the
+    -- one above.
+    

models/intermediate/core/schema.yml

@@ -2666,7 +2666,7 @@ models:
         description: |
           Integer-based flag version of 
           total_active_listings_with_active_product_bundle_with_paid_service.
-      
+
       # To be deleted from here
       - name: total_listings_with_product_bundle_with_paid_service
         data_type: integer
@@ -2690,7 +2690,6 @@ models:
         description: |
           Integer-based flag version of total_listings_with_active_product_bundle_with_paid_service.
       # To be deleted until here
-
       - name: total_bookings_with_product_bundle
         data_type: integer
         description: |
@@ -3131,7 +3130,7 @@ models:
                 - DEPOSIT_MANAGEMENT
                 - GUEST_AGREEMENT
                 - PROTECTION
-                
+
       - name: is_default_service
         data_type: boolean
         description: |
@@ -6047,3 +6046,226 @@ models:
           Date of when this record was last updated.
         data_tests:
           - not_null
+
+  - name: int_core__guest_product_payments
+    description: |
+      A model that holds guest products payments with details around
+      when they happen, what service was being paid, what was the related
+      verification request, etc.
+
+      Currency rates are converted to GBP with our simple exchange rates view.
+      Only amounts with taxes are included in this model. 
+
+      (!) At this moment, this model only includes Check In Cover payments made 
+      as Verification Payments.
+
+    columns:
+      - name: id_guest_product_payment
+        data_type: bigint
+        description: |
+          Unique identifier for the guest product payment.
+        data_tests:
+          - unique
+          - not_null
+
+      - name: id_payment
+        data_type: bigint
+        description: |
+          Unique ID for the payment itself.
+        data_tests:
+          - unique
+          - not_null
+
+      - name: id_verification_to_payment
+        data_type: bigint
+        description: |
+          Identifier for the relation between the payment verification
+          and the payment. It can be null if the payment is not related 
+          to a verification.
+
+      - name: is_refundable
+        data_type: boolean
+        description: |
+          Indicates whether the payment is refundable or not.
+
+      - name: created_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the payment was created. 
+          It cannot be null.
+        data_tests:
+          - not_null
+
+      - name: updated_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the payment was last updated. 
+          It cannot be null.
+        data_tests:
+          - not_null
+
+      - name: payment_due_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the payment is due. 
+          It cannot be null.
+        data_tests:
+          - not_null
+
+      - name: payment_due_date_utc
+        data_type: date
+        description: |
+          Date of when the payment is due. 
+          It cannot be null.
+        data_tests:
+          - not_null
+
+      - name: payment_paid_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the payment was paid. 
+          It can be null if the payment has not been paid yet.
+
+      - name: payment_paid_date_utc
+        data_type: date
+        description: |
+          Date of when the payment was paid. 
+          It can be null if the payment has not been paid yet.
+
+      - name: payment_reference
+        data_type: character varying
+        description: |
+          Reference code associated with the payment.
+          It can be null if the payment has not been paid yet.
+
+      - name: refund_due_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the refund is due. 
+          It can be null if the payment has not been refunded.
+
+      - name: refund_due_date_utc
+        data_type: date
+        description: |
+          Date of when the refund is due. 
+          It can be null if the payment has not been refunded.
+
+      - name: payment_refunded_at_utc
+        data_type: timestamp without time zone
+        description: |
+          Timestamp of when the payment was refunded. 
+          It can be null if the payment has not been refunded.
+
+      - name: payment_refunded_date_utc
+        data_type: date
+        description: |
+          Date of when the payment was refunded. 
+          It can be null if the payment has not been refunded.
+
+      - name: refund_payment_reference
+        data_type: character varying
+        description: |
+          Reference code associated with the refund payment.
+          It can be null if the payment has not been refunded.
+
+      - name: id_user_host
+        data_type: character varying
+        description: |
+          Unique identifier of the Host linked to the Verification 
+          Request that has a payment. 
+          It can be null for same-day payments due to different freshness
+          of the sources used to build this model.
+        data_tests:
+          - not_null:
+              where: "date(created_at_utc) < current_date"
+
+      - name: id_user_guest
+        data_type: character varying
+        description: |
+          Unique identifier of the Guest linked to the Verification 
+          Request that has a payment. 
+          It cannot be null.
+        data_tests:
+          - not_null
+
+      - name: id_verification
+        data_type: bigint
+        description: |
+          Unique identifier of the Verification that has a payment. 
+          It can be null if the payment is not related to a verification.
+
+      - name: id_verification_request
+        data_type: bigint
+        description: |
+          Unique identifier of the Verification Request that has a payment. 
+          It can be null if the payment is not related to a verification.
+
+      - name: guest_product_name
+        data_type: character varying
+        description: |
+          Name of the Guest Product associated with the payment.
+          This corresponds to the internal name, rather than the display name.
+          It cannot be null.
+        data_tests:
+          - not_null
+          - accepted_values:
+              values:
+                - CHECKINCOVER
+
+      - name: guest_product_payment_source
+        data_type: character varying
+        description: |
+          Backend source of the Guest Product payment. 
+          This helps identify the backend tables that are used to track this 
+          payment. 
+          It cannot be null.
+          At this stage, it only includes the source "VERIFICATION_PAYMENT".
+        data_tests:
+          - not_null
+          - accepted_values:
+              values:
+                - VERIFICATION_PAYMENT
+
+      - name: currency
+        data_type: character varying
+        description: |
+          The ISO 4217 currency code (e.g., GBP, USD, EUR) in which the payment 
+          was originally made.
+          It can be null for same-day payments due to different freshness
+          of the sources used to build this model.
+        data_tests:
+          - not_null:
+              where: "date(created_at_utc) < current_date"
+
+      - name: total_amount_in_txn_currency
+        data_type: numeric
+        description: |
+          The total amount of the payment in local currency.
+          This includes taxes if applicable.
+
+      - name: total_amount_in_gbp
+        data_type: numeric
+        description: |
+          The total amount of the payment in GBP.
+          This includes taxes if applicable.
+
+      - name: payment_status
+        data_type: character varying
+        description: |
+          Current status of the payment (e.g., PAID).
+          It cannot be null.
+        data_tests:
+          - accepted_values:
+              values:
+                - PAID
+                - REFUNDED
+                - REFUND FAILED
+                - FAILED WITH RETRY
+                - FAILED
+                - UNKNOWN
+
+      - name: notes
+        data_type: character varying
+        description: |
+          Notes or comments associated with the payment.
+          It can be null if there are no notes.