Add swift-scheduling practice exercise

config.json

@@ -854,6 +854,18 @@
         ],
         "difficulty": 4
       },
+      {
+        "slug": "swift-scheduling",
+        "name": "Swift Scheduling",
+        "uuid": "7f5388dc-ce0e-40d4-98d1-7a00aeae018d",
+        "practices": [],
+        "prerequisites": [
+          "if-else-statements",
+          "datetime",
+          "strings"
+        ],
+        "difficulty": 4
+      },
       {
         "slug": "triangle",
         "name": "Triangle",

exercises/practice/swift-scheduling/.docs/instructions.md

@@ -0,0 +1,50 @@
+# Instructions
+
+Your task is to convert delivery date descriptions to _actual_ delivery dates, based on when the meeting started.
+
+There are two types of delivery date descriptions:
+
+1. Fixed: a predefined set of words.
+2. Variable: words that have a variable component, but follow a predefined set of patterns.
+
+## Fixed delivery date descriptions
+
+There are three fixed delivery date descriptions:
+
+- `"NOW"`
+- `"ASAP"` (As Soon As Possible)
+- `"EOW"` (End Of Week)
+
+The following table shows how to translate them:
+
+| Description | Meeting start                 | Delivery date                       |
+| ----------- | ----------------------------- | ----------------------------------- |
+| `"NOW"`     | -                             | Two hours after the meeting started |
+| `"ASAP"`    | Before 13:00                  | Today at 17:00                      |
+| `"ASAP"`    | After or at 13:00             | Tomorrow at 13:00                   |
+| `"EOW"`     | Monday, Tuesday, or Wednesday | Friday at 17:00                     |
+| `"EOW"`     | Thursday or Friday            | Sunday at 20:00                     |
+
+## Variable delivery date descriptions
+
+There are two variable delivery date description patterns:
+
+- `"<N>M"` (N-th month)
+- `"Q<N>"` (N-th quarter)
+
+| Description | Meeting start             | Delivery date                                             |
+| ----------- | ------------------------- | --------------------------------------------------------- |
+| `"<N>M"`    | Before N-th month         | At 8:00 on the _first_ workday of this year's N-th month  |
+| `"<N>M"`    | After or in N-th month    | At 8:00 on the _first_ workday of next year's N-th month  |
+| `"Q<N>"`    | Before or in N-th quarter | At 8:00 on the _last_ workday of this year's N-th quarter |
+| `"Q<N>"`    | After N-th quarter        | At 8:00 on the _last_ workday of next year's N-th quarter |
+
+~~~~exercism/note
+A workday is a Monday, Tuesday, Wednesday, Thursday, or Friday.
+
+A year has four quarters, each with three months:
+1. January/February/March
+2. April/May/June
+3. July/August/September
+4. October/November/December.
+~~~~

exercises/practice/swift-scheduling/.docs/introduction.md

@@ -0,0 +1,6 @@
+# Introduction
+
+This week, it is your turn to take notes in the department's planning meeting.
+In this meeting, your boss will set delivery dates for all open work items.
+Annoyingly, instead of specifying the _actual_ delivery dates, your boss will only _describe them_ in an abbreviated format.
+As many of your colleagues won't be familiar with this corporate lingo, you'll need to convert these delivery date descriptions to actual delivery dates.

exercises/practice/swift-scheduling/.meta/config.json

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+{
+  "authors": [
+    "zamora-carlos"
+  ],
+  "files": {
+    "solution": [
+      "src/main/java/SwiftScheduling.java"
+    ],
+    "test": [
+      "src/test/java/SwiftSchedulingTest.java"
+    ],
+    "example": [
+      ".meta/src/reference/java/SwiftScheduling.java"
+    ]
+  },
+  "blurb": "Convert delivery date descriptions to actual delivery dates.",
+  "source": "Erik Schierboom",
+  "source_url": "https://github.com/exercism/problem-specifications/pull/2536"
+}

exercises/practice/swift-scheduling/.meta/src/reference/java/SwiftScheduling.java

@@ -0,0 +1,97 @@
+import java.time.DayOfWeek;
+import java.time.LocalDateTime;
+
+import static java.time.DayOfWeek.*;
+
+public class SwiftScheduling {
+    public static LocalDateTime convertToDeliveryDate(LocalDateTime meetingStart, String description) {
+        if ("NOW".equals(description)) {
+            return meetingStart.plusHours(2);
+        }
+
+        if ("ASAP".equals(description)) {
+            LocalDateTime sameDayAt1pm = toStartOfDay(meetingStart).withHour(13);
+
+            if (meetingStart.isBefore(sameDayAt1pm)) {
+                return toStartOfDay(meetingStart).withHour(17);
+            } else {
+                return toStartOfDay(meetingStart).plusDays(1).withHour(13);
+            }
+        }
+
+        if ("EOW".equals(description)) {
+            DayOfWeek day = meetingStart.getDayOfWeek();
+            LocalDateTime deliveryDate = toStartOfDay(meetingStart);
+
+            if (day == MONDAY || day == TUESDAY || day == WEDNESDAY) {
+                deliveryDate = deliveryDate.withHour(17);
+                while (deliveryDate.getDayOfWeek() != FRIDAY) {
+                    deliveryDate = deliveryDate.plusDays(1);
+                }
+            } else if (day == THURSDAY || day == FRIDAY) {
+                deliveryDate = deliveryDate.withHour(20);
+                while (deliveryDate.getDayOfWeek() != SUNDAY) {
+                    deliveryDate = deliveryDate.plusDays(1);
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid day of week");
+            }
+
+            return deliveryDate;
+        }
+
+        if (description.matches("\\d+M")) {
+            int month = Integer.parseInt(description.substring(0, description.length() - 1));
+            LocalDateTime targetMonth = toStartOfDay(meetingStart)
+                    .withMonth(month)
+                    .withDayOfMonth(1);
+
+            if (!meetingStart.isBefore(targetMonth)) {
+                targetMonth = targetMonth.plusYears(1);
+            }
+
+            LocalDateTime deliveryDate = targetMonth.withHour(8);
+            while (isWeekend(deliveryDate)) {
+                deliveryDate = deliveryDate.plusDays(1);
+            }
+
+            return deliveryDate;
+        }
+
+        if (description.matches("Q\\d")) {
+            int quarter = Integer.parseInt(description.substring(1));
+            LocalDateTime lastDayOfQuarter = getLastDayOfQuarter(meetingStart, quarter);
+
+            if (!meetingStart.isBefore(lastDayOfQuarter.plusDays(1))) {
+                lastDayOfQuarter = lastDayOfQuarter.plusYears(1);
+            }
+
+            LocalDateTime deliveryDate = lastDayOfQuarter.withHour(8);
+            while (isWeekend(deliveryDate)) {
+                deliveryDate = deliveryDate.minusDays(1);
+            }
+
+            return deliveryDate;
+        }
+
+        throw new IllegalArgumentException("Invalid description");
+    }
+
+    private static LocalDateTime toStartOfDay(LocalDateTime dateTime) {
+        return dateTime.toLocalDate().atStartOfDay();
+    }
+
+    private static LocalDateTime getLastDayOfQuarter(LocalDateTime dateTime, int quarter) {
+        int lastMonthOfQuarter = quarter * 3;
+        return toStartOfDay(dateTime)
+                .withMonth(lastMonthOfQuarter)
+                .withDayOfMonth(1)
+                .plusMonths(1)
+                .minusDays(1);
+    }
+
+    private static boolean isWeekend(LocalDateTime date) {
+        DayOfWeek dayOfWeek = date.getDayOfWeek();
+        return dayOfWeek == SATURDAY || dayOfWeek == SUNDAY;
+    }
+}

exercises/practice/swift-scheduling/.meta/tests.toml

@@ -0,0 +1,58 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[1d0e6e72-f370-408c-bc64-5dafa9c6da73]
+description = "NOW translates to two hours later"
+
+[93325e7b-677d-4d96-b017-2582af879dc2]
+description = "ASAP before one in the afternoon translates to today at five in the afternoon"
+
+[cb4252a3-c4c1-41f6-8b8c-e7269733cef8]
+description = "ASAP at one in the afternoon translates to tomorrow at one in the afternoon"
+
+[6fddc1ea-2fe9-4c60-81f7-9220d2f45537]
+description = "ASAP after one in the afternoon translates to tomorrow at one in the afternoon"
+
+[25f46bf9-6d2a-4e95-8edd-f62dd6bc8a6e]
+description = "EOW on Monday translates to Friday at five in the afternoon"
+
+[0b375df5-d198-489e-acee-fd538a768616]
+description = "EOW on Tuesday translates to Friday at five in the afternoon"
+
+[4afbb881-0b5c-46be-94e1-992cdc2a8ca4]
+description = "EOW on Wednesday translates to Friday at five in the afternoon"
+
+[e1341c2b-5e1b-4702-a95c-a01e8e96e510]
+description = "EOW on Thursday translates to Sunday at eight in the evening"
+
+[bbffccf7-97f7-4244-888d-bdd64348fa2e]
+description = "EOW on Friday translates to Sunday at eight in the evening"
+
+[d651fcf4-290e-407c-8107-36b9076f39b2]
+description = "EOW translates to leap day"
+
+[439bf09f-3a0e-44e7-bad5-b7b6d0c4505a]
+description = "2M before the second month of this year translates to the first workday of the second month of this year"
+
+[86d82e83-c481-4fb4-9264-625de7521340]
+description = "11M in the eleventh month translates to the first workday of the eleventh month of next year"
+
+[0d0b8f6a-1915-46f5-a630-1ff06af9da08]
+description = "4M in the ninth month translates to the first workday of the fourth month of next year"
+
+[06d401e3-8461-438f-afae-8d26aa0289e0]
+description = "Q1 in the first quarter translates to the last workday of the first quarter of this year"
+
+[eebd5f32-b16d-4ecd-91a0-584b0364b7ed]
+description = "Q4 in the second quarter translates to the last workday of the fourth quarter of this year"
+
+[c920886c-44ad-4d34-a156-dc4176186581]
+description = "Q3 in the fourth quarter translates to the last workday of the third quarter of next year"

exercises/practice/swift-scheduling/build.gradle

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+plugins {
+  id "java"
+}
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  testImplementation platform("org.junit:junit-bom:5.10.0")
+  testImplementation "org.junit.jupiter:junit-jupiter"
+  testImplementation "org.assertj:assertj-core:3.25.1"
+
+  testRuntimeOnly "org.junit.platform:junit-platform-launcher"
+}
+
+test {
+  useJUnitPlatform()
+
+  testLogging {
+    exceptionFormat = "full"
+    showStandardStreams = true
+    events = ["passed", "failed", "skipped"]
+  }
+}

exercises/practice/swift-scheduling/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists