Replace toml config with a javascript file

README.md

@@ -14,7 +14,7 @@ Or build a native image with GraalVM
 ```bash
 ./gradlew installShadowDist
 cd app/build/install/app-shadow/lib
-native-image --no-fallback -R:MaxNewSize=32 -jar scaffold.jar
+native-image --no-fallback -R:MaxNewSize=32 --language:js -jar scaffold.jar
 ```
 
 ## Usage
@@ -28,7 +28,7 @@ cd generator-directory
 
 You can then add [Pebble templates](https://pebbletemplates.io/) and files in the tree directory
 
-An example is present in this repo
+An kotlin example is present [here](https://git.simplenotes.be/hubert/Kotlin-scaffold)
 
 ### List generators
 

app/build.gradle.kts

@@ -8,7 +8,7 @@ dependencies {
     runtimeOnly("org.slf4j:slf4j-simple:2.0.0-alpha1")
     implementation("io.pebbletemplates:pebble:3.1.5")
     implementation("com.github.ajalt.clikt:clikt:3.1.0")
-    implementation("com.electronwill.night-config:toml:3.6.3")
+    implementation("org.graalvm.js:js:21.0.0.2")
 }
 
 application {

app/resources/META-INF/native-image/reflect-config.json

@@ -1,7 +1,4 @@
 [
-{
-  "name":"com.electronwill.nightconfig.toml.TomlFormat"
-},
 {
   "name":"java.util.Map$Entry",
   "allPublicMethods":true

app/resources/META-INF/native-image/resource-config.json

@@ -1,5 +1,11 @@
 {
-  "resources":{
-  "includes":[{"pattern":"\\QMETA-INF/services/org.slf4j.spi.SLF4JServiceProvider\\E"}]},
-  "bundles":[]
+  "resources": {
+    "includes": [
+      {"pattern": "\\QMETA-INF/services/org.slf4j.spi.SLF4JServiceProvider\\E"},
+      {"pattern": "\\Qinit/index.d.ts\\E"},
+      {"pattern": "\\Qinit/index.js\\E"},
+      {"pattern": "\\Qinit/README.md\\E"}
+    ]
+  },
+  "bundles": []
 }

app/resources/init/README.md

@@ -0,0 +1 @@
+# {{ name }}

app/resources/init/index.d.ts

@@ -0,0 +1,46 @@
+/**
+ * Print a message to the console
+ *
+ * @param message
+ */
+declare function echo(message: string): void
+
+/**
+ * Prompt a user for text input
+ *
+ * @param text - The text to display for the prompt
+ * @param def - A default value
+ */
+declare function prompt(text: string, def?: string): string
+
+/**
+ * Prompt a user for text input
+ *
+ * @param text - The text to display for the prompt
+ * @param def - A default value
+ */
+declare function promptBoolean(text: string, def?: boolean): boolean
+
+/**
+ * Renders a template
+ *
+ * @param name - The template name
+ * @param context - The template context
+ */
+declare function render(name: string, context: any): string
+
+/**
+ * Write a string to a file
+ *
+ * @param input - The content of the file
+ * @param output - The output path
+ */
+declare function write(input: string, output: string): void
+
+/**
+ * Copy a file
+ *
+ * @param input - The input path
+ * @param output - The output path
+ */
+declare function copy(input: string, output: string): void

app/resources/init/index.js

@@ -0,0 +1,7 @@
+echo("Example")
+
+const name = prompt("Project name")
+
+const ctx = {name: name}
+
+write(render("README.md", ctx), "README.md")

app/src/Config.kt

@@ -1,51 +0,0 @@
-package scaffold
-
-import com.electronwill.nightconfig.core.Config
-import com.electronwill.nightconfig.core.UnmodifiableConfig
-import com.electronwill.nightconfig.core.file.FileConfig
-import java.nio.file.Files
-import java.nio.file.Files.isRegularFile
-import java.nio.file.Path
-import kotlin.streams.toList
-
-data class GeneratorConfig(
-    val templates: List<Path>,
-    val files: List<Path>,
-    val prompts: Map<String, List<PromptValue>>
-)
-
-fun Generator.loadConfig(): GeneratorConfig {
-    val config: UnmodifiableConfig = FileConfig.of(rootPath.resolve("config.toml")).apply { load() }
-
-    val allFiles = Files.walk(treeRoot).filter { isRegularFile(it) }.toList()
-
-    fun List<String>.expandGlobs() = flatMap { Globs.matches(allFiles, treeRoot, it) }
-
-    val files = config.get<List<String>>("files").expandGlobs()
-    val templates = config.get<List<String>>("templates").expandGlobs()
-
-    val prompts = mutableMapOf<String, MutableList<PromptValue>>()
-    val section = config.get<Any?>("prompt") ?: error("Missing prompt section")
-    if (section !is Config) error("Prompt section is not an object")
-
-    for ((subsectionName, subsection) in section.valueMap()) {
-        check(subsection is List<*>) { "prompts.$subsectionName is not a list of prompts" }
-
-        for (prompt in subsection) {
-            check(prompt is Config)
-
-            val promptValue = PromptValue(
-                name = prompt.get("name") ?: error("Missing name"),
-                info = prompt.get("info"),
-                default = prompt.get("default"),
-                type = prompt.getEnum("type", PromptType::class.java) ?: PromptType.String
-            )
-
-            val current = prompts.computeIfAbsent(subsectionName) { ArrayList() }
-            current += promptValue
-        }
-
-    }
-
-    return GeneratorConfig(templates, files, prompts)
-}

app/src/Generators.kt

@@ -5,13 +5,12 @@ import java.nio.file.Path
 import kotlin.streams.toList
 
 class Generators(val configDirectory: Path) {
-    fun isValid(name: String): Boolean {
-        val generatorRoot = configDirectory.resolve(name)
-        return Files.isDirectory(generatorRoot) && Files.isRegularFile(generatorRoot.resolve("config.toml"))
-    }
+    fun isValid(name: String) = isValid(configDirectory.resolve(name))
+
+    private fun isValid(path: Path) = Files.isDirectory(path) && Files.isRegularFile(path.resolve("index.js"))
 
     fun findAll(): List<Path> = Files
         .list(configDirectory)
-        .filter { Files.exists(it.resolve("config.toml")) }
+        .filter(::isValid)
         .toList()
 }

app/src/Globs.kt

@@ -1,11 +0,0 @@
-package scaffold
-
-import java.nio.file.FileSystems
-import java.nio.file.Path
-
-object Globs {
-    fun matches(allFiles: List<Path>, root: Path, glob: String): List<Path> {
-        val matcher = FileSystems.getDefault().getPathMatcher("glob:$root/$glob")
-        return allFiles.filter(matcher::matches)
-    }
-}

app/src/PromptValue.kt

@@ -1,10 +0,0 @@
-package scaffold
-
-enum class PromptType { String }
-
-data class PromptValue(
-    val name: String,
-    val info: String?,
-    val default: String?,
-    val type: PromptType,
-)

app/src/Scaffold.kt

@@ -24,6 +24,6 @@ fun main(args: Array<String>) {
     Scaffold().subcommands(
         ListCommand(generators),
         GenerateCommand(generators),
-        NewCommand(generators)
+        NewCommand(generators),
     ).main(args)
 }

app/src/commands/GenerateCommand.kt

@@ -2,6 +2,8 @@ package scaffold.commands
 
 import com.github.ajalt.clikt.core.CliktCommand
 import com.github.ajalt.clikt.core.ProgramResult
+import com.github.ajalt.clikt.core.UsageError
+import com.github.ajalt.clikt.output.TermUi
 import com.github.ajalt.clikt.parameters.arguments.argument
 import com.github.ajalt.clikt.parameters.options.convert
 import com.github.ajalt.clikt.parameters.options.option
@@ -11,37 +13,20 @@ import com.mitchellbosecke.pebble.loader.FileLoader
 import com.mitchellbosecke.pebble.template.PebbleTemplate
 import scaffold.Generator
 import scaffold.Generators
-import scaffold.PromptType
-import scaffold.loadConfig
+import scaffold.scripting.ScriptContext
+import scaffold.scripting.ScriptEngine
 import java.io.StringWriter
 import java.nio.file.Files
 import java.nio.file.Path
 
 class GenerateCommand(private val generators: Generators) : CliktCommand("generate") {
     private val name by argument(help = "generator name")
-    private val output by option().convert { Path.of(it) }.required()
+    private val outputPathRoot by option("-o", "--output").convert { Path.of(it) }.required()
 
     override fun run() {
         checkPreconditions()
 
         val generator = Generator(generators.configDirectory, name)
-        val config = generator.loadConfig()
-
-        val templateContext = mutableMapOf<String, Any?>()
-
-        for ((path, prompts) in config.prompts) {
-            val map = mutableMapOf<String, Any>()
-            templateContext[path] = map
-            for ((name, info, default, type) in prompts) {
-                if (type != PromptType.String) TODO()
-
-                val value = prompt(
-                    text = info ?: "$path.$name",
-                    default = default
-                )!!
-                map[name] = value
-            }
-        }
 
         val pebble = PebbleEngine.Builder()
             .autoEscaping(false)
@@ -49,29 +34,57 @@ class GenerateCommand(private val generators: Generators) : CliktCommand("genera
             .loader(FileLoader().apply { prefix = generator.treeRoot.toString() })
             .build()!!
 
-        for (template in config.templates) {
-            val templatePath = generator.treeRoot.relativize(template).toString()
-            val renderedTemplate = pebble.getTemplate(templatePath)(templateContext)
-            val outputPath = output.resolve(templatePath)
-            Files.createDirectories(outputPath.parent)
-            Files.writeString(outputPath, renderedTemplate)
+        val scriptContext = object : ScriptContext {
+            override fun echo(message: String) = this@GenerateCommand.echo(message)
+
+            override fun prompt(text: String, default: String?) = this@GenerateCommand.prompt(text, default)!!
+
+            override fun promptBoolean(text: String, default: Boolean?): Boolean {
+                val suffix = when (default) {
+                    true -> "[Y/n]"
+                    false -> "[y/N]"
+                    null -> "[y/n]"
+                }
+
+                return this@GenerateCommand.prompt("$text $suffix", default = "$default", showDefault = false) {
+                    when (it.toLowerCase()) {
+                        "y" -> true
+                        "n" -> false
+                        else -> throw UsageError("Can only be [y/n]")
+                    }
+                }!!
+            }
+
+            override fun promptInt(text: String, default: Int?): Int {
+                TODO("Not yet implemented")
+            }
+
+            override fun render(name: String, ctx: Map<String, Any?>) = pebble.getTemplate(name)(ctx)
+
+            override fun write(content: String, output: String) {
+                val outputPath = outputPathRoot.resolve(output)
+                Files.createDirectories(outputPath.parent)
+                Files.writeString(outputPath, content)
+            }
+
+            override fun copy(input: String, output: String) {
+                val inputPath = generator.treeRoot.resolve(input)
+                val outputPath = outputPathRoot.resolve(output)
+                Files.createDirectories(outputPath.parent)
+                Files.copy(inputPath, outputPath)
+            }
         }
 
-        for (inputFile in config.files) {
-            val relativeFile = generator.treeRoot.relativize(inputFile)
-            val outputFile = output.resolve(relativeFile)
+        val engine = ScriptEngine(scriptContext)
+        val script = Files.readString(generator.rootPath.resolve("index.js"))
 
-            Files.createDirectories(outputFile.parent)
-            Files.copy(inputFile, outputFile)
-        }
-
-        echo("Generated project in $output")
+        engine.eval(script)
     }
 
     private fun checkPreconditions() {
-        if (Files.exists(output)) {
-            if (Files.list(output).findAny().isPresent) {
-                echo("Output path `$output` is not empty")
+        if (Files.exists(outputPathRoot)) {
+            if (Files.list(outputPathRoot).findAny().isPresent) {
+                echo("Output path `$outputPathRoot` is not empty")
                 throw ProgramResult(1)
             }
         }

app/src/commands/NewCommand.kt

@@ -19,29 +19,15 @@ class NewCommand(private val generators: Generators) : CliktCommand("new") {
 
         Files.createDirectories(root)
 
-        val configFile = """
-            templates = [
-                "README.md"
-            ]
+        fun resource(path: String) = javaClass.getResource("/$path").readText()
 
-            files = [
-                ".gitignore"
-            ]
+        Files.writeString(root.resolve("index.js"), resource("init/index.js"))
+        Files.writeString(root.resolve("index.d.ts"), resource("init/index.d.ts"))
 
-            [prompt]
-
-            [[prompt.project]]
-            type = "String"
-            name = "name"
-            info = "Project name"
-        """.trimIndent()
-
-        Files.writeString(root.resolve("config.toml"), configFile)
         val tree = root.resolve("tree")
         Files.createDirectory(tree)
 
-        Files.writeString(tree.resolve("README.md"), "# {{ project.name }}")
-        Files.writeString(tree.resolve(".gitignore"), "# https://git-scm.com/docs/gitignore")
+        Files.writeString(tree.resolve("README.md"), resource("init/README.md"))
 
         echo("Generator created in $root")
     }

app/src/scripting/ScriptContext.kt

@@ -0,0 +1,14 @@
+package scaffold.scripting
+
+interface ScriptContext {
+    fun echo(message: String)
+
+    fun prompt(text: String, default: String?): String
+    fun promptBoolean(text: String, default: Boolean?): Boolean
+    fun promptInt(text: String, default: Int?): Int
+
+    fun render(name: String, ctx: Map<String, Any?>): String
+
+    fun write(content: String, output: String)
+    fun copy(input: String, output: String)
+}

app/src/scripting/ScriptEngine.kt

@@ -0,0 +1,52 @@
+package scaffold.scripting
+
+import org.graalvm.polyglot.Context
+import org.graalvm.polyglot.proxy.ProxyExecutable
+import org.intellij.lang.annotations.Language
+
+class ScriptEngine(private val scriptContext: ScriptContext) {
+
+    private val context = Context
+        .newBuilder("js")
+        .allowIO(true)
+        .build()
+
+    init {
+        with(context.getBindings("js")) {
+            putMember("echo", ProxyExecutable { args ->
+                scriptContext.echo(args[0].asString())
+                null
+            })
+
+            putMember("prompt", ProxyExecutable { args ->
+                scriptContext.prompt(args[0].asString(), args.getOrNull(1)?.asString())
+            })
+
+            putMember("promptBoolean", ProxyExecutable { args ->
+                scriptContext.promptBoolean(args[0].asString(), args.getOrNull(1)?.asBoolean())
+            })
+
+            putMember("promptInt", ProxyExecutable { args ->
+                scriptContext.promptInt(args[0].asString(), args.getOrNull(1)?.asInt())
+            })
+
+            putMember("render", ProxyExecutable { args ->
+                @Suppress("UNCHECKED_CAST")
+                scriptContext.render(args[0].asString(), args[1].`as`(Map::class.java) as Map<String, Any?>)
+            })
+
+            putMember("write", ProxyExecutable { (input, output) ->
+                scriptContext.write(input.asString(), output.asString())
+            })
+
+            putMember("copy", ProxyExecutable { (input, output) ->
+                scriptContext.copy(input.asString(), output.asString())
+            })
+        }
+    }
+
+    fun eval(@Language("js") script: CharSequence) {
+        context.eval("js", script)
+    }
+
+}

app/test/scripting/ScriptEngineTest.kt

@@ -0,0 +1,70 @@
+@file:Suppress("MemberVisibilityCanBePrivate", "PackageDirectoryMismatch")
+
+package scaffold.scripting
+
+import io.mockk.clearMocks
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInstance
+import org.junit.jupiter.api.TestInstance.Lifecycle
+
+@TestInstance(Lifecycle.PER_CLASS)
+class ScriptEngineTest {
+
+    val scriptContext = mockk<ScriptContext>()
+    val scriptEngine = ScriptEngine(scriptContext)
+
+    @BeforeEach
+    fun beforeEach() = clearMocks(scriptContext)
+
+    @Test
+    fun echo() {
+        every { scriptContext.echo("test") } returns Unit
+
+        val script = "echo('test')"
+        scriptEngine.eval(script)
+
+        verify { scriptContext.echo(any()) }
+    }
+
+    @Test
+    fun render() {
+        every { scriptContext.render("test", match { it["something"] == "hello" }) } returns "blah"
+
+        val script = """
+            const ctx = {
+                "something": "hello"
+            }
+            
+            render("test", ctx)
+        """.trimIndent()
+
+        scriptEngine.eval(script)
+
+        verify { scriptContext.render(any(), any()) }
+    }
+
+    @Test
+    fun prompt() {
+        every { scriptContext.prompt("a", null) } returns "a"
+
+        val script = "prompt('a')"
+        scriptEngine.eval(script)
+
+        verify { scriptContext.prompt(any(), null) }
+    }
+
+    @Test
+    fun promptWithDefault(){
+        every { scriptContext.prompt("a", "default") } returns "default"
+
+        val script = "prompt('a', 'default')"
+        scriptEngine.eval(script)
+
+        verify { scriptContext.prompt(any(), any()) }
+    }
+
+}

buildSrc/src/main/kotlin/java-convention.gradle.kts

@@ -4,11 +4,6 @@ plugins {
 
 repositories {
     mavenCentral()
-    maven {
-        url = uri("https://kotlin.bintray.com/kotlinx")
-        // https://github.com/Kotlin/kotlinx.html/issues/173
-        content { includeModule("org.jetbrains.kotlinx", "kotlinx-html-jvm") }
-    }
 }
 
 java {

buildSrc/src/main/kotlin/kotlin-convention.gradle.kts

@@ -8,7 +8,9 @@ plugins {
 dependencies {
     implementation(kotlin("stdlib-jdk8"))
     implementation(platform(kotlin("bom")))
-    testImplementation("io.kotest:kotest-runner-junit5:4.4.1")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.7.1")
+    testImplementation("io.strikt:strikt-core:0.30.0")
+    testImplementation("io.mockk:mockk:1.10.6")
 }
 
 tasks.withType<Test> {
@@ -19,14 +21,10 @@ tasks.withType<KotlinCompile> {
     kotlinOptions {
         jvmTarget = "11"
         javaParameters = true
-        freeCompilerArgs = listOf("-Xopt-in=kotlin.RequiresOptIn")
     }
 }
 
 kotlin {
-    sourceSets.all {
-        languageSettings.enableLanguageFeature("InlineClasses")
-    }
     sourceSets["main"].kotlin.setSrcDirs(listOf("src"))
     sourceSets["test"].kotlin.setSrcDirs(listOf("test"))
 }

examples/basic/config.toml

@@ -1,15 +0,0 @@
-templates = [
-    "README.md"
-]
-
-files = [
-    ".gitignore",
-    ".gitattributes"
-]
-
-[prompt]
-
-[[prompt.project]]
-type = "String"
-name = "name"
-info = "Project name"

examples/basic/tree/.gitattributes

@@ -1,6 +0,0 @@
-#
-# https://help.github.com/articles/dealing-with-line-endings/
-#
-# These are explicitly windows files and should use crlf
-*.bat           text eol=crlf
-

examples/basic/tree/.gitignore

@@ -1,2 +0,0 @@
-.gradle
-build

examples/basic/tree/README.md

@@ -1,7 +0,0 @@
-# {{ project.name }}
-
-## Usage
-
-```bash
-./gradlew run
-```