From c2480a70c466e8be2d701fce3ebe7c6aac3a48ef Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@flowpex.dev>
Date: Mon, 22 Jul 2024 17:59:34 -0700
Subject: [PATCH] Add System.Datetime.parse()

---
 .../Datetime/parse/System_Datetime_parse.cls  | 38 ++++++++++
 .../parse/System_Datetime_parse.cls-meta.xml  |  9 +++
 .../parse/System_Datetime_parse_TEST.cls      | 72 +++++++++++++++++++
 .../System_Datetime_parse_TEST.cls-meta.xml   |  9 +++
 4 files changed, 128 insertions(+)
 create mode 100644 src/System/Datetime/parse/System_Datetime_parse.cls
 create mode 100644 src/System/Datetime/parse/System_Datetime_parse.cls-meta.xml
 create mode 100644 src/System/Datetime/parse/System_Datetime_parse_TEST.cls
 create mode 100644 src/System/Datetime/parse/System_Datetime_parse_TEST.cls-meta.xml

diff --git a/src/System/Datetime/parse/System_Datetime_parse.cls b/src/System/Datetime/parse/System_Datetime_parse.cls
new file mode 100644
index 0000000..e418fc9
--- /dev/null
+++ b/src/System/Datetime/parse/System_Datetime_parse.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_parse {
+
+    @InvocableMethod(label='System.Datetime.parse()' category='Flowpex' iconName='slds:standard:event' description='Constructs a Datetime from the given String in the local time zone and in the format of the user locale.')
+
+    global static List<Response> System_Datetime_parse (List<Request> requests) {
+        List<Response> responses = new List<Response>();
+        for (Request req : requests) {
+            Response res = new Response();
+            try {
+                res.datetimeFromString = Datetime.parse(req.stringToDatetime);
+            } catch (Exception e) {
+                System.debug(e);
+            }
+            responses.add(res);
+        }
+        return responses;
+    }
+
+    global class Request {
+        @InvocableVariable(required='true' label='String' description='Locale-formatted string to convert to a Datetime.')
+        global String stringToDatetime;
+
+        global Request () {}
+        global Request (String s) {
+            this.stringToDatetime = s;
+        }
+    }
+
+    global class Response {
+        @InvocableVariable(label='Datetime' description='Datetime constructed from locale-formatted string.')
+        global Datetime datetimeFromString;
+    }
+}
\ No newline at end of file
diff --git a/src/System/Datetime/parse/System_Datetime_parse.cls-meta.xml b/src/System/Datetime/parse/System_Datetime_parse.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Datetime/parse/System_Datetime_parse.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/parse/System_Datetime_parse_TEST.cls b/src/System/Datetime/parse/System_Datetime_parse_TEST.cls
new file mode 100644
index 0000000..ad6bde1
--- /dev/null
+++ b/src/System/Datetime/parse/System_Datetime_parse_TEST.cls
@@ -0,0 +1,72 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Chris Duncan <chris@flowpex.dev>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+@isTest
+private class System_Datetime_parse_TEST {
+
+    @isTest
+    static void testNoArgs () {
+        List<System_Datetime_parse.Request> requests = new List<System_Datetime_parse.Request>();
+
+        Test.startTest();
+        List<System_Datetime_parse.Response> responses = System_Datetime_parse.System_Datetime_parse(requests);
+        Test.stopTest();
+
+        Assert.areEqual(0, responses.size());
+    }
+
+    @isTest
+    static void testEmptyRequest () {
+        List<System_Datetime_parse.Request> requests = new List<System_Datetime_parse.Request>();
+        System_Datetime_parse.Request req = new System_Datetime_parse.Request();
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Datetime_parse.Response> responses = System_Datetime_parse.System_Datetime_parse(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].datetimeFromString);
+    }
+
+    @isTest
+    static void testBlankArgs () {
+        List<System_Datetime_parse.Request> requests = new List<System_Datetime_parse.Request>();
+        System_Datetime_parse.Request req = new System_Datetime_parse.Request(null);
+        requests.add(req);
+
+        Test.startTest();
+        List<System_Datetime_parse.Response> responses = System_Datetime_parse.System_Datetime_parse(requests);
+        Test.stopTest();
+
+        Assert.areEqual(1, responses.size());
+        Assert.isNull(responses[0].datetimeFromString);
+    }
+
+    @isTest
+    static void testManyArgs () {
+        String epoch = '1/1/';
+        List<String> strings = new List<String>();
+        for (Integer i = 0; i < 200; i++) {
+            Integer year = 1970 + i;
+            strings.add(epoch + year.toString() + ', 12:34 AM');
+        }
+
+        Test.startTest();
+        List<System_Datetime_parse.Request> requests = new List<System_Datetime_parse.Request>();
+        for (String s : strings) {
+            System_Datetime_parse.Request req = new System_Datetime_parse.Request(s);
+            requests.add(req);
+        }
+        List<System_Datetime_parse.Response> responses = System_Datetime_parse.System_Datetime_parse(requests);
+        Test.stopTest();
+
+        Assert.areEqual(200, responses.size());
+        for (System_Datetime_parse.Response res : responses) {
+            Assert.isNotNull(res.datetimeFromString);
+            Assert.isInstanceOfType(res.datetimeFromString, Datetime.class);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/System/Datetime/parse/System_Datetime_parse_TEST.cls-meta.xml b/src/System/Datetime/parse/System_Datetime_parse_TEST.cls-meta.xml
new file mode 100644
index 0000000..7d03d55
--- /dev/null
+++ b/src/System/Datetime/parse/System_Datetime_parse_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