From bbc25dcb2677830c241d7c02c81e207b5876adf4 Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@flowpex.dev>
Date: Sat, 13 Jul 2024 14:34:37 -0700
Subject: [PATCH] Add System.Date.toStartOfWeek()

---
 .../System_Date_toStartOfWeek.cls             | 38 +++++++++++
 .../System_Date_toStartOfWeek.cls-meta.xml    |  9 +++
 .../System_Date_toStartOfWeek_TEST.cls        | 67 +++++++++++++++++++
 ...ystem_Date_toStartOfWeek_TEST.cls-meta.xml |  9 +++
 4 files changed, 123 insertions(+)
 create mode 100644 src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls
 create mode 100644 src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls-meta.xml
 create mode 100644 src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls
 create mode 100644 src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls-meta.xml

diff --git a/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls
new file mode 100644
index 0000000..cc5297c
--- /dev/null
+++ b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls
@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+global class System_Date_toStartOfWeek {
+
+    @InvocableMethod(label='System.Date.toStartOfWeek()' category='Flowpex' iconName='slds:standard:date_input' description='Returns the start of the week for the Date that called the method, depending on the context user\'s locale.')
+
+    global static List<Response> System_Date_toStartOfWeek (List<Request> requests) {
+        List<Response> responses = new List<Response>();
+        for (Request req : requests) {
+            Response res = new Response();
+            try {
+                res.startOfWeek = req.aDate.toStartOfWeek();
+            } catch (Exception e) {
+                System.debug(e);
+            }
+            responses.add(res);
+        }
+        return responses;
+    }
+
+    global class Request {
+        @InvocableVariable(required='true' label='Date' description='Date to use for getting first day of the week.')
+        global Date aDate;
+
+        global Request () {}
+        global Request (Date d) {
+            this.aDate = d;
+        }
+    }
+
+    global class Response {
+        @InvocableVariable(label='Start of Week' description='First day of the week of the specified date.')
+        global Date startOfWeek;
+    }
+}
\ No newline at end of file
diff --git a/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls-meta.xml b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek.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/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls
new file mode 100644
index 0000000..ef888fb
--- /dev/null
+++ b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls
@@ -0,0 +1,67 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+@isTest
+private class System_Date_toStartOfWeek_TEST {
+
+    @isTest
+    static void testNoArgs () {
+        List<System_Date_toStartOfWeek.Request> requests = new List<System_Date_toStartOfWeek.Request>();
+
+        Test.startTest();
+        List<System_Date_toStartOfWeek.Response> responses = System_Date_toStartOfWeek.System_Date_toStartOfWeek(requests);
+        Test.stopTest();
+
+        Assert.areEqual(0, responses.size());
+    }
+
+    @isTest
+    static void testEmptyRequest () {
+        List<System_Date_toStartOfWeek.Request> requests = new List<System_Date_toStartOfWeek.Request>();
+        System_Date_toStartOfWeek.Request req = new System_Date_toStartOfWeek.Request();
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Date_toStartOfWeek.Response> responses = System_Date_toStartOfWeek.System_Date_toStartOfWeek(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].startOfWeek);
+    }
+
+    @isTest
+    static void testBlankArgs () {
+        List<System_Date_toStartOfWeek.Request> requests = new List<System_Date_toStartOfWeek.Request>();
+        System_Date_toStartOfWeek.Request req = new System_Date_toStartOfWeek.Request(null);
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Date_toStartOfWeek.Response> responses = System_Date_toStartOfWeek.System_Date_toStartOfWeek(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].startOfWeek);
+    }
+
+    @isTest
+    static void testManyArgs () {
+        Date epoch = Date.newInstance(1970, 1, 1);
+
+        Test.startTest();
+        List<System_Date_toStartOfWeek.Request> requests = new List<System_Date_toStartOfWeek.Request>();
+        for (Integer i = 0; i < 200; i++) {
+            System_Date_toStartOfWeek.Request req = new System_Date_toStartOfWeek.Request(epoch.addDays(i));
+            requests.add(req);
+        }
+        List<System_Date_toStartOfWeek.Response> responses = System_Date_toStartOfWeek.System_Date_toStartOfWeek(requests);
+        Test.stopTest();
+
+        Assert.areEqual(200, responses.size());
+        for (System_Date_toStartOfWeek.Response res : responses) {
+            Assert.isNotNull(res.startOfWeek);
+            Assert.isInstanceOfType(res.startOfWeek, Date.class);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls-meta.xml b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_TEST.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Date/toStartOfWeek/System_Date_toStartOfWeek_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