feat(abg): support different binding versions on different server routes

.github/workflows/bindings-server.main.kts

@@ -97,6 +97,16 @@ workflow(
 
         cleanMavenLocal()
 
+        run(
+            name = "Execute the script using the bindings from the server with v1 route",
+            command = """
+                mv .github/workflows/test-script-consuming-jit-bindings-v1.main.do-not-compile.kts .github/workflows/test-script-consuming-jit-bindings-v1.main.kts
+                .github/workflows/test-script-consuming-jit-bindings-v1.main.kts
+            """.trimIndent(),
+        )
+
+        cleanMavenLocal()
+
         run(
             name = "Execute the script using bindings but without dependency on library",
             command = """

.github/workflows/bindings-server.yaml

@@ -74,46 +74,54 @@ jobs:
       name: 'Clean Maven Local to fetch required POMs again'
       run: 'rm -rf ~/.m2/repository/'
     - id: 'step-7'
+      name: 'Execute the script using the bindings from the server with v1 route'
+      run: |-
+        mv .github/workflows/test-script-consuming-jit-bindings-v1.main.do-not-compile.kts .github/workflows/test-script-consuming-jit-bindings-v1.main.kts
+        .github/workflows/test-script-consuming-jit-bindings-v1.main.kts
+    - id: 'step-8'
+      name: 'Clean Maven Local to fetch required POMs again'
+      run: 'rm -rf ~/.m2/repository/'
+    - id: 'step-9'
       name: 'Execute the script using bindings but without dependency on library'
       run: |-
         mv .github/workflows/test-served-bindings-depend-on-library.main.do-not-compile.kts .github/workflows/test-served-bindings-depend-on-library.main.kts
         .github/workflows/test-served-bindings-depend-on-library.main.kts
-    - id: 'step-8'
+    - id: 'step-10'
       name: 'Install Kotlin 1.9.0'
       uses: 'fwilhe2/setup-kotlin@v1'
       with:
         version: '1.9.0'
-    - id: 'step-9'
+    - id: 'step-11'
       name: 'Clean Maven Local to fetch required POMs again'
       run: 'rm -rf ~/.m2/repository/'
-    - id: 'step-10'
+    - id: 'step-12'
       name: 'Execute the script using the bindings from the server, using older Kotlin (1.9.0) as consumer'
       run: |2-
                         cp .github/workflows/test-script-consuming-jit-bindings.main.kts .github/workflows/test-script-consuming-jit-bindings-too-old-kotlin.main.kts
                         (.github/workflows/test-script-consuming-jit-bindings-too-old-kotlin.main.kts || true) >> output.txt 2>&1
         grep "was compiled with an incompatible version of Kotlin" output.txt
-    - id: 'step-11'
+    - id: 'step-13'
       name: 'Install Kotlin 2.0.0'
       uses: 'fwilhe2/setup-kotlin@v1'
       with:
         version: '2.0.0'
-    - id: 'step-12'
+    - id: 'step-14'
       name: 'Clean Maven Local to fetch required POMs again'
       run: 'rm -rf ~/.m2/repository/'
-    - id: 'step-13'
+    - id: 'step-15'
       name: 'Execute the script using the bindings from the server, using older Kotlin (2.0.0) as consumer'
       run: |-
         cp .github/workflows/test-script-consuming-jit-bindings.main.kts .github/workflows/test-script-consuming-jit-bindings-older-kotlin.main.kts
         .github/workflows/test-script-consuming-jit-bindings-older-kotlin.main.kts
-    - id: 'step-14'
+    - id: 'step-16'
       name: 'Compile a Gradle project using the bindings from the server'
       run: |-
         cd .github/workflows/test-gradle-project-using-bindings-server
         ./gradlew build
-    - id: 'step-15'
+    - id: 'step-17'
       name: 'Fetch maven-metadata.xml for top-level action'
       run: 'curl --fail http://localhost:8080/actions/checkout/maven-metadata.xml | grep ''<version>v4</version>'''
-    - id: 'step-16'
+    - id: 'step-18'
       name: 'Fetch maven-metadata.xml for nested action'
       run: 'curl --fail http://localhost:8080/actions/cache__save/maven-metadata.xml | grep ''<version>v4</version>'''
   deploy:

.github/workflows/test-script-consuming-jit-bindings-v1.main.do-not-compile.kts

@@ -0,0 +1,33 @@
+#!/usr/bin/env kotlin
+@file:Repository("https://repo.maven.apache.org/maven2/")
+@file:DependsOn("io.github.typesafegithub:github-workflows-kt:1.13.0")
+
+@file:Repository("http://localhost:8080/v1")
+
+// Regular, top-level action.
+@file:DependsOn("actions:checkout:v4")
+
+// Nested action.
+@file:DependsOn("gradle:actions__setup-gradle:v3")
+
+// Using specific version.
+@file:DependsOn("actions:cache:v3.3.3")
+
+// Always untyped action.
+@file:DependsOn("typesafegithub:always-untyped-action-for-tests:v1")
+
+import io.github.typesafegithub.workflows.actions.actions.Cache
+import io.github.typesafegithub.workflows.actions.actions.Checkout
+import io.github.typesafegithub.workflows.actions.actions.Checkout_Untyped
+import io.github.typesafegithub.workflows.actions.gradle.ActionsSetupGradle
+import io.github.typesafegithub.workflows.actions.typesafegithub.AlwaysUntypedActionForTests_Untyped
+
+println(Checkout_Untyped(fetchTags_Untyped = "false"))
+println(Checkout(fetchTags = false))
+println(Checkout(fetchTags_Untyped = "false"))
+println(AlwaysUntypedActionForTests_Untyped(foobar_Untyped = "baz"))
+println(ActionsSetupGradle())
+println(Cache(path = listOf("some-path"), key = "some-key"))
+
+// Ensure that 'copy(...)' method is exposed.
+Checkout(fetchTags = false).copy(fetchTags = true)

action-binding-generator/api/action-binding-generator.api

@@ -72,8 +72,8 @@ public final class io/github/typesafegithub/workflows/actionbindinggenerator/gen
 }
 
 public final class io/github/typesafegithub/workflows/actionbindinggenerator/generation/GenerationKt {
-	public static final fun generateBinding (Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/ActionCoords;Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/MetadataRevision;Lio/github/typesafegithub/workflows/actionbindinggenerator/metadata/Metadata;Lkotlin/Pair;)Ljava/util/List;
-	public static synthetic fun generateBinding$default (Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/ActionCoords;Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/MetadataRevision;Lio/github/typesafegithub/workflows/actionbindinggenerator/metadata/Metadata;Lkotlin/Pair;ILjava/lang/Object;)Ljava/util/List;
+	public static final fun generateBinding (Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/ActionCoords;Lio/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion;Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/MetadataRevision;Lio/github/typesafegithub/workflows/actionbindinggenerator/metadata/Metadata;Lkotlin/Pair;)Ljava/util/List;
+	public static synthetic fun generateBinding$default (Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/ActionCoords;Lio/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion;Lio/github/typesafegithub/workflows/actionbindinggenerator/domain/MetadataRevision;Lio/github/typesafegithub/workflows/actionbindinggenerator/metadata/Metadata;Lkotlin/Pair;ILjava/lang/Object;)Ljava/util/List;
 }
 
 public final class io/github/typesafegithub/workflows/actionbindinggenerator/metadata/Input {
@@ -182,3 +182,14 @@ public final class io/github/typesafegithub/workflows/actionbindinggenerator/met
 public abstract interface class io/github/typesafegithub/workflows/actionbindinggenerator/typing/Typing {
 }
 
+public final class io/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion : java/lang/Enum {
+	public static final field V1 Lio/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public final fun getLibraryVersion ()Ljava/lang/String;
+	public final fun isDeprecated ()Z
+	public final fun isExperimental ()Z
+	public fun toString ()Ljava/lang/String;
+	public static fun valueOf (Ljava/lang/String;)Lio/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion;
+	public static fun values ()[Lio/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion;
+}
+

action-binding-generator/src/main/kotlin/io/github/typesafegithub/workflows/actionbindinggenerator/generation/Generation.kt

@@ -20,6 +20,7 @@ import io.github.typesafegithub.workflows.actionbindinggenerator.domain.Metadata
 import io.github.typesafegithub.workflows.actionbindinggenerator.domain.TypingActualSource
 import io.github.typesafegithub.workflows.actionbindinggenerator.domain.fullName
 import io.github.typesafegithub.workflows.actionbindinggenerator.domain.isTopLevel
+import io.github.typesafegithub.workflows.actionbindinggenerator.domain.prettyPrint
 import io.github.typesafegithub.workflows.actionbindinggenerator.domain.subName
 import io.github.typesafegithub.workflows.actionbindinggenerator.generation.Properties.CUSTOM_INPUTS
 import io.github.typesafegithub.workflows.actionbindinggenerator.generation.Properties.CUSTOM_VERSION
@@ -36,6 +37,8 @@ import io.github.typesafegithub.workflows.actionbindinggenerator.typing.provideT
 import io.github.typesafegithub.workflows.actionbindinggenerator.utils.removeTrailingWhitespacesForEachLine
 import io.github.typesafegithub.workflows.actionbindinggenerator.utils.toCamelCase
 import io.github.typesafegithub.workflows.actionbindinggenerator.utils.toKotlinPackageName
+import io.github.typesafegithub.workflows.actionbindinggenerator.versioning.BindingVersion
+import io.github.typesafegithub.workflows.actionbindinggenerator.versioning.BindingVersion.V1
 
 public data class ActionBinding(
     val kotlinCode: String,
@@ -58,6 +61,7 @@ private object Properties {
 }
 
 public fun ActionCoords.generateBinding(
+    bindingVersion: BindingVersion = V1,
     metadataRevision: MetadataRevision,
     metadata: Metadata? = null,
     inputTypings: Pair<Map<String, Typing>, TypingActualSource?>? = null,
@@ -73,10 +77,11 @@ public fun ActionCoords.generateBinding(
 
     val actionBindingSourceCodeUntyped =
         generateActionBindingSourceCode(
-            metadataProcessed,
-            this,
-            emptyMap(),
-            classNameUntyped,
+            metadata = metadataProcessed,
+            coords = this,
+            bindingVersion = bindingVersion,
+            inputTypings = emptyMap(),
+            className = classNameUntyped,
             untypedClass = true,
             replaceWith = inputTypingsResolved.second?.let { CodeBlock.of("ReplaceWith(%S)", className) },
         )
@@ -94,6 +99,7 @@ public fun ActionCoords.generateBinding(
                 generateActionBindingSourceCode(
                     metadata = metadataProcessed,
                     coords = this,
+                    bindingVersion = bindingVersion,
                     inputTypings = inputTypingsResolved.first,
                     className = className,
                 )
@@ -124,6 +130,7 @@ private fun Metadata.removeDeprecatedInputsIfNameClash(): Metadata {
 private fun generateActionBindingSourceCode(
     metadata: Metadata,
     coords: ActionCoords,
+    bindingVersion: BindingVersion,
     inputTypings: Map<String, Typing>,
     className: String,
     untypedClass: Boolean = false,
@@ -140,7 +147,7 @@ private fun generateActionBindingSourceCode(
                 changes will be overwritten with the next binding code regeneration.
                 See https://github.com/typesafegithub/github-workflows-kt for more info.
                 """.trimIndent(),
-            ).addType(generateActionClass(metadata, coords, inputTypings, className, untypedClass, replaceWith))
+            ).addType(generateActionClass(metadata, coords, bindingVersion, inputTypings, className, untypedClass, replaceWith))
             .addSuppressAnnotation(metadata)
             .indent("    ")
             .build()
@@ -169,6 +176,7 @@ private fun FileSpec.Builder.addSuppressAnnotation(metadata: Metadata) =
 private fun generateActionClass(
     metadata: Metadata,
     coords: ActionCoords,
+    bindingVersion: BindingVersion,
     inputTypings: Map<String, Typing>,
     className: String,
     untypedClass: Boolean,
@@ -178,12 +186,13 @@ private fun generateActionClass(
         .classBuilder(className)
         .addModifiers(KModifier.DATA)
         .addKdocIfNotEmpty(actionKdoc(metadata, coords, untypedClass))
-        .replaceWith(replaceWith)
+        .deprecateBindingVersion(bindingVersion)
+        .replaceWith(bindingVersion, replaceWith)
         .addClassConstructorAnnotation()
         .inheritsFromRegularAction(coords, metadata, className)
         .primaryConstructor(metadata.primaryConstructor(inputTypings, coords, className, untypedClass))
         .properties(metadata, coords, inputTypings, className, untypedClass)
-        .addInitializerBlockIfNecessary(metadata, inputTypings, untypedClass)
+        .addInitializerBlock(metadata, bindingVersion, coords, inputTypings, untypedClass)
         .addFunction(metadata.secondaryConstructor(inputTypings, coords, className, untypedClass))
         .addFunction(metadata.buildToYamlArgumentsFunction(inputTypings, untypedClass))
         .addCustomTypes(inputTypings, coords, className)
@@ -371,8 +380,23 @@ private fun Metadata.linkedMapOfInputs(
     }
 }
 
-private fun TypeSpec.Builder.replaceWith(replaceWith: CodeBlock?): TypeSpec.Builder {
-    if (replaceWith != null) {
+private fun TypeSpec.Builder.deprecateBindingVersion(bindingVersion: BindingVersion): TypeSpec.Builder {
+    if (bindingVersion.isDeprecated) {
+        addAnnotation(
+            AnnotationSpec
+                .builder(Deprecated::class.asClassName())
+                .addMember("%S", "Use a non-deprecated binding version in the repository URL")
+                .build(),
+        )
+    }
+    return this
+}
+
+private fun TypeSpec.Builder.replaceWith(
+    bindingVersion: BindingVersion,
+    replaceWith: CodeBlock?,
+): TypeSpec.Builder {
+    if (!bindingVersion.isDeprecated && replaceWith != null) {
         addAnnotation(
             AnnotationSpec
                 .builder(Deprecated::class.asClassName())
@@ -531,15 +555,63 @@ private fun ParameterSpec.Builder.defaultValueIfNullable(
     return this
 }
 
-private fun TypeSpec.Builder.addInitializerBlockIfNecessary(
+private fun TypeSpec.Builder.addInitializerBlock(
     metadata: Metadata,
+    bindingVersion: BindingVersion,
+    coords: ActionCoords,
     inputTypings: Map<String, Typing>,
     untypedClass: Boolean,
 ): TypeSpec.Builder {
-    if (untypedClass || metadata.inputs.isEmpty() || metadata.inputs.none { inputTypings.containsKey(it.key) }) {
+    if (!bindingVersion.isDeprecated &&
+        !bindingVersion.isExperimental &&
+        (untypedClass || metadata.inputs.isEmpty() || metadata.inputs.none { inputTypings.containsKey(it.key) })
+    ) {
         return this
     }
-    addInitializerBlock(metadata.initializerBlock(inputTypings))
+
+    addInitializerBlock(
+        buildCodeBlock {
+            if (bindingVersion.isDeprecated) {
+                val firstStableVersion = BindingVersion.entries.find { !it.isDeprecated && !it.isExperimental }
+                addStatement(
+                    "println(%S)",
+                    """
+                    WARNING: The used binding version $bindingVersion for ${coords.prettyPrint} is deprecated! First stable version is $firstStableVersion.
+                    """.trimIndent(),
+                )
+                beginControlFlow("""if (System.getenv("GITHUB_ACTIONS").toBoolean())""")
+                addStatement(
+                    "println(%S)",
+                    """
+
+                    ::warning title=Deprecated Binding Version Used::The used binding version $bindingVersion for ${coords.prettyPrint} is deprecated! First stable version is $firstStableVersion.
+                    """.trimIndent(),
+                )
+                endControlFlow()
+                add("\n")
+            }
+            if (bindingVersion.isExperimental) {
+                val lastStableVersion = BindingVersion.entries.findLast { !it.isDeprecated && !it.isExperimental }
+                addStatement(
+                    "println(%S)",
+                    """
+                    WARNING: The used binding version $bindingVersion for ${coords.prettyPrint} is experimental! Last stable version is $lastStableVersion.
+                    """.trimIndent(),
+                )
+                beginControlFlow("""if (System.getenv("GITHUB_ACTIONS").toBoolean())""")
+                addStatement(
+                    "println(%S)",
+                    """
+
+                    ::warning title=Experimental Binding Version Used::The used binding version $bindingVersion for ${coords.prettyPrint} is experimental! Last stable version is $lastStableVersion.
+                    """.trimIndent(),
+                )
+                endControlFlow()
+                add("\n")
+            }
+            add(metadata.initializerBlock(inputTypings))
+        },
+    )
     return this
 }
 

action-binding-generator/src/main/kotlin/io/github/typesafegithub/workflows/actionbindinggenerator/versioning/BindingVersion.kt

@@ -0,0 +1,12 @@
+package io.github.typesafegithub.workflows.actionbindinggenerator.versioning
+
+public enum class BindingVersion(
+    public val isDeprecated: Boolean = false,
+    public val isExperimental: Boolean = true,
+    public val libraryVersion: String,
+) {
+    V1(isExperimental = false, libraryVersion = "3.2.0"),
+    ;
+
+    override fun toString(): String = super.toString().lowercase()
+}