From 8fc69bd1e2351d1371a92a39b92f9942542f2b40 Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@flowpex.dev>
Date: Sat, 20 Jul 2024 23:51:17 -0700
Subject: [PATCH] Add System.Datetime.month()

---
 .../Datetime/month/System_Datetime_month.cls  | 38 +++++++++++
 .../month/System_Datetime_month.cls-meta.xml  |  9 +++
 .../month/System_Datetime_month_TEST.cls      | 66 +++++++++++++++++++
 .../System_Datetime_month_TEST.cls-meta.xml   |  9 +++
 4 files changed, 122 insertions(+)
 create mode 100644 src/System/Datetime/month/System_Datetime_month.cls
 create mode 100644 src/System/Datetime/month/System_Datetime_month.cls-meta.xml
 create mode 100644 src/System/Datetime/month/System_Datetime_month_TEST.cls
 create mode 100644 src/System/Datetime/month/System_Datetime_month_TEST.cls-meta.xml

diff --git a/src/System/Datetime/month/System_Datetime_month.cls b/src/System/Datetime/month/System_Datetime_month.cls
new file mode 100644
index 0000000..32a37d6
--- /dev/null
+++ b/src/System/Datetime/month/System_Datetime_month.cls
@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+global class System_Datetime_month {
+
+    @InvocableMethod(label='System.Datetime.month()' category='Flowpex' iconName='slds:standard:topic2' description='Returns the month component of a Datetime in the local time zone of the context user (1=Jan).')
+
+    global static List<Response> System_Datetime_month (List<Request> requests) {
+        List<Response> responses = new List<Response>();
+        for (Request req : requests) {
+            Response res = new Response();
+            try {
+                res.month = req.aDatetime.month();
+            } catch (Exception e) {
+                System.debug(e);
+            }
+            responses.add(res);
+        }
+        return responses;
+    }
+
+    global class Request {
+        @InvocableVariable(required='true' label='Datetime' description='Datetime with the desired month component.')
+        global Datetime aDatetime;
+
+        global Request () {}
+        global Request (Datetime d) {
+            this.aDatetime = d;
+        }
+    }
+
+    global class Response {
+        @InvocableVariable(label='Month' description='Month component of the datetime in the local time zone of the context user.')
+        global Integer month;
+    }
+}
\ No newline at end of file
diff --git a/src/System/Datetime/month/System_Datetime_month.cls-meta.xml b/src/System/Datetime/month/System_Datetime_month.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Datetime/month/System_Datetime_month.cls-meta.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+SPDX-License-Identifier: GPL-3.0-or-later
+-->
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>61.0</apiVersion>
+    <status>Active</status>
+</ApexClass>
\ No newline at end of file
diff --git a/src/System/Datetime/month/System_Datetime_month_TEST.cls b/src/System/Datetime/month/System_Datetime_month_TEST.cls
new file mode 100644
index 0000000..76f24d4
--- /dev/null
+++ b/src/System/Datetime/month/System_Datetime_month_TEST.cls
@@ -0,0 +1,66 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+@isTest
+private class System_Datetime_month_TEST {
+
+    @isTest
+    static void testNoArgs () {
+        List<System_Datetime_month.Request> requests = new List<System_Datetime_month.Request>();
+
+        Test.startTest();
+        List<System_Datetime_month.Response> responses = System_Datetime_month.System_Datetime_month(requests);
+        Test.stopTest();
+
+        Assert.areEqual(0, responses.size());
+    }
+
+    @isTest
+    static void testEmptyRequest () {
+        List<System_Datetime_month.Request> requests = new List<System_Datetime_month.Request>();
+        System_Datetime_month.Request req = new System_Datetime_month.Request();
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Datetime_month.Response> responses = System_Datetime_month.System_Datetime_month(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].month);
+    }
+
+    @isTest
+    static void testBlankArgs () {
+        List<System_Datetime_month.Request> requests = new List<System_Datetime_month.Request>();
+        System_Datetime_month.Request req = new System_Datetime_month.Request(null);
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Datetime_month.Response> responses = System_Datetime_month.System_Datetime_month(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].month);
+    }
+
+    @isTest
+    static void testManyArgs () {
+        Datetime epoch = Datetime.newInstance(1970, 1, 1, 0, 0, 0);
+
+        Test.startTest();
+        List<System_Datetime_month.Request> requests = new List<System_Datetime_month.Request>();
+        for (Integer i = 0; i < 12; i++) {
+            System_Datetime_month.Request req = new System_Datetime_month.Request(epoch.addMonths(i));
+            requests.add(req);
+        }
+        List<System_Datetime_month.Response> responses = System_Datetime_month.System_Datetime_month(requests);
+        Test.stopTest();
+
+        Assert.areEqual(12, responses.size());
+        for (Integer i = 0; i < 12; i++) {
+            Assert.areEqual(i + 1, responses[i].month);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/System/Datetime/month/System_Datetime_month_TEST.cls-meta.xml b/src/System/Datetime/month/System_Datetime_month_TEST.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Datetime/month/System_Datetime_month_TEST.cls-meta.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+SPDX-License-Identifier: GPL-3.0-or-later
+-->
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>61.0</apiVersion>
+    <status>Active</status>
+</ApexClass>
\ No newline at end of file
-- 
2.52.0