From c9889dc62753ec1b33c3e0fd6050dd4d66fc6690 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Wed, 1 Dec 2021 10:21:40 -0500
Subject: [PATCH] Do not charge for voicemail

---
 deploy/cdr_with_charge.sql |  3 ++-
 verify/cdr_with_charge.sql | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/deploy/cdr_with_charge.sql b/deploy/cdr_with_charge.sql
index 464f4ce..3a029c4 100644
--- a/deploy/cdr_with_charge.sql
+++ b/deploy/cdr_with_charge.sql
@@ -9,7 +9,8 @@ CREATE VIEW cdr_with_charge AS
 	SELECT DISTINCT ON (cdr_id)
 		cdr.*,
 		rate,
-		rate * ceiling(billsec / 60.0) AS charge
+		(CASE WHEN cdr.disposition = 'VOICEMAIL' THEN 0
+		ELSE rate * ceiling(billsec / 60.0) END) AS charge
 	FROM
 		cdr
 		INNER JOIN customer_plans USING (customer_id)
diff --git a/verify/cdr_with_charge.sql b/verify/cdr_with_charge.sql
index 606bbd9..b0b5b53 100644
--- a/verify/cdr_with_charge.sql
+++ b/verify/cdr_with_charge.sql
@@ -4,4 +4,24 @@ BEGIN;
 
 SELECT rate, charge FROM cdr_with_charge;
 
+INSERT INTO plan_log
+	(customer_id, plan_name, date_range)
+	VALUES
+	('test', 'test_plan', tsrange(LOCALTIMESTAMP, LOCALTIMESTAMP + '10 seconds'));
+
+INSERT INTO cdr
+	(cdr_id, customer_id, start, billsec, disposition, tel)
+	VALUES
+	('test1', 'test', LOCALTIMESTAMP, 10000, 'VOICEMAIL', '+15551234567');
+
+DO $$
+DECLARE
+	c numeric;
+BEGIN
+	SELECT charge INTO c FROM cdr_with_charge WHERE cdr_id='test1';
+	IF c IS NULL or c <> 0 THEN
+		RAISE EXCEPTION 'Expected VOICEMAIL to charge 0, but got: %', c;
+	END IF;
+END $$;
+
 ROLLBACK;
-- 
2.34.2