From 65c9cf166faeafa72c6ac81e2bd28c692903ed07 Mon Sep 17 00:00:00 2001
From: Sam Snyder <sam@moderne.io>
Date: Tue, 17 Dec 2024 17:09:26 -0800
Subject: [PATCH] Add a "latest minor" semver selector. We have them for major
 versions and patch versions might as well have minor, too.

---
 .../org/openrewrite/semver/LatestMinor.java   | 60 +++++++++++++++++++
 .../org/openrewrite/semver/LatestRelease.java |  2 +-
 .../java/org/openrewrite/semver/Semver.java   |  1 +
 .../openrewrite/semver/LatestMinorTest.java   | 38 ++++++++++++
 4 files changed, 100 insertions(+), 1 deletion(-)
 create mode 100644 rewrite-core/src/main/java/org/openrewrite/semver/LatestMinor.java
 create mode 100644 rewrite-core/src/test/java/org/openrewrite/semver/LatestMinorTest.java

diff --git a/rewrite-core/src/main/java/org/openrewrite/semver/LatestMinor.java b/rewrite-core/src/main/java/org/openrewrite/semver/LatestMinor.java
new file mode 100644
index 00000000000..17737b52488
--- /dev/null
+++ b/rewrite-core/src/main/java/org/openrewrite/semver/LatestMinor.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 the original author or authors.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openrewrite.semver;
+
+import lombok.Value;
+import org.jspecify.annotations.Nullable;
+import org.openrewrite.Validated;
+
+@Value
+public class LatestMinor implements VersionComparator {
+    @Nullable
+    String metadataPattern;
+
+    @Override
+    public boolean isValid(@Nullable String currentVersion, String version) {
+        Validated<? extends VersionComparator> validated = currentVersion == null ?
+                LatestRelease.buildLatestRelease("latest.release", metadataPattern) :
+                TildeRange.build("~" + Semver.majorVersion(currentVersion), metadataPattern);
+
+        if (validated.isValid()) {
+            VersionComparator comparator = validated.getValue();
+            if (comparator != null) {
+                return comparator.isValid(currentVersion, version);
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public int compare(@Nullable String currentVersion, String v1, String v2) {
+        if(currentVersion == null) {
+            return new LatestRelease(null)
+                    .compare(null, v1, v2);
+        }
+
+        //noinspection ConstantConditions
+        return TildeRange.build("~" + Semver.majorVersion(currentVersion) + "." + Semver.minorVersion(currentVersion), metadataPattern)
+                .getValue()
+                .compare(currentVersion, v1, v2);
+    }
+
+    public static Validated<LatestMinor> build(String toVersion, @Nullable String metadataPattern) {
+        return "latest.minor".equalsIgnoreCase(toVersion) ?
+                Validated.valid("latestMinor", new LatestMinor(metadataPattern)) :
+                Validated.invalid("latestMinor", toVersion, "not latest release");
+    }
+}
diff --git a/rewrite-core/src/main/java/org/openrewrite/semver/LatestRelease.java b/rewrite-core/src/main/java/org/openrewrite/semver/LatestRelease.java
index 18fc5d4b12e..df8fac8951c 100644
--- a/rewrite-core/src/main/java/org/openrewrite/semver/LatestRelease.java
+++ b/rewrite-core/src/main/java/org/openrewrite/semver/LatestRelease.java
@@ -168,7 +168,7 @@ public int compare(@Nullable String currentVersion, String v1, String v2) {
     }
 
     public static Validated<LatestRelease> buildLatestRelease(String toVersion, @Nullable String metadataPattern) {
-        return "latest.release".equalsIgnoreCase(toVersion) ?
+        return "latest.release".equalsIgnoreCase(toVersion) || "latest.major".equalsIgnoreCase(toVersion) ?
                 Validated.valid("latestRelease", new LatestRelease(metadataPattern)) :
                 Validated.invalid("latestRelease", toVersion, "not latest release");
     }
diff --git a/rewrite-core/src/main/java/org/openrewrite/semver/Semver.java b/rewrite-core/src/main/java/org/openrewrite/semver/Semver.java
index d4d6388702a..e47ec996629 100644
--- a/rewrite-core/src/main/java/org/openrewrite/semver/Semver.java
+++ b/rewrite-core/src/main/java/org/openrewrite/semver/Semver.java
@@ -59,6 +59,7 @@ public static Validated<VersionComparator> validate(String toVersion, @Nullable
         ).and(Validated.<VersionComparator>none()
                 .or(LatestRelease.buildLatestRelease(toVersion, metadataPattern))
                 .or(LatestIntegration.build(toVersion, metadataPattern))
+                .or(LatestMinor.build(toVersion, metadataPattern))
                 .or(LatestPatch.build(toVersion, metadataPattern))
                 .or(HyphenRange.build(toVersion, metadataPattern))
                 .or(XRange.build(toVersion, metadataPattern))
diff --git a/rewrite-core/src/test/java/org/openrewrite/semver/LatestMinorTest.java b/rewrite-core/src/test/java/org/openrewrite/semver/LatestMinorTest.java
new file mode 100644
index 00000000000..ef551e1d882
--- /dev/null
+++ b/rewrite-core/src/test/java/org/openrewrite/semver/LatestMinorTest.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2024 the original author or authors.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openrewrite.semver;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class LatestMinorTest {
+    private final LatestMinor latestMinor = new LatestMinor(null);
+
+    @Test
+    void isValidWhenCurrentIsNull() {
+        assertThat(latestMinor.isValid(null, "1.0.0")).isTrue();
+    }
+    @Test
+    void isValid() {
+        assertThat(latestMinor.isValid("1.0.0", "1.0.0")).isTrue();
+        assertThat(latestMinor.isValid("1.0.0", "1.0.0.1")).isTrue();
+        assertThat(latestMinor.isValid("1.0.0", "1.0.1")).isTrue();
+        assertThat(latestMinor.isValid("1.0", "1.0.1")).isTrue();
+        assertThat(latestMinor.isValid("1.0.0", "1.1.0")).isTrue();
+        assertThat(latestMinor.isValid("1.0.0", "2.0.0")).isFalse();
+    }
+}