From 688e73ea536abcf798f71df90b253ddc07e66f13 Mon Sep 17 00:00:00 2001
From: clausherther <claus@calogica.com>
Date: Sun, 25 Oct 2020 18:53:14 -0600
Subject: [PATCH] Update base date logic to allow to dynamic date ranges

---
 macros/get_base_dates.sql | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/macros/get_base_dates.sql b/macros/get_base_dates.sql
index 986d086..2928ae1 100644
--- a/macros/get_base_dates.sql
+++ b/macros/get_base_dates.sql
@@ -1,15 +1,26 @@
-{% macro get_base_dates(start_date, end_date) %}
+{% macro get_base_dates(start_date=None, end_date=None, n_dateparts=None, datepart=None) %}
 with date_spine as
 (
+    {% if start_date and end_date %}
+    {%- set start_date="cast('" ~ start_date ~ "' as datetime)" -%}
+    {%- set end_date="cast('" ~ end_date ~ "' as datetime)"  -%}
+
+    {% elif n_dateparts and datepart %}
+
+    {%- set start_date = dbt_utils.dateadd(datepart, -1 * n_dateparts, dbt_date.today()) -%}
+    {%- set end_date = dbt_date.tomorrow() -%}
+    {% endif %}
+
     {{ dbt_utils.date_spine(
         datepart="day",
-        start_date="cast('" ~ start_date ~ "' as datetime)",
-        end_date="cast('" ~ end_date ~ "' as datetime)",
+        start_date=start_date,
+        end_date=end_date,
        )
     }}
+
 )
 select
-    d.date_day
+    date(d.date_day) as date_day
 from
     date_spine d
 {% endmacro %}
\ No newline at end of file