start adding events generator

tgbotapi.webapps/.templates/events/EventType{{$event_name_uppercase}}.kt

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+data object {{$event_name_uppercase}} : EventType("{{$event_name}}")

tgbotapi.webapps/.templates/events/WebApp{{$event_name_uppercase}}.kt

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+@JsName("onEvent")
+internal fun on{{$event_name_uppercase}}(type: String, callback: ({{$callback_args}}) -> Unit)

tgbotapi.webapps/.templates/events/{{$event_name_uppercase}}.kt

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+// Part for callback typealias
+
+typealias {{$callback_typealias_name}} = WebApp.({{$callback_args}}) -> Unit
+
+// Part for outside of WebApp
+
+/**
+ * @return The callback which should be used in case you want to turn off events handling
+ */
+fun WebApp.onEvent(type: EventType.{{$event_name_uppercase}}, eventHandler: {{$callback_typealias_name}}) = { it: {{$callback_typealias_name}} ->
+    eventHandler(js("this").unsafeCast<WebApp>(), it)
+}.also {
+    on{{$event_name_uppercase}}(
+        type.typeName,
+        callback = it
+    )
+}
+
+/**
+ * @return The callback which should be used in case you want to turn off events handling
+ */
+fun WebApp.on{{$event_name_uppercase}}(eventHandler: {{$callback_typealias_name}}) = onEvent(EventType.{{$event_name_uppercase}}, eventHandler)

tgbotapi.webapps/.templates/generator.kts

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+#!/usr/bin/env kotlin
+/**
+ * Generates files and folders as they have been put in the folder. Envs uses common syntax, but
+ * values may contains {{${'$'}sampleVariable}} parts, where {{${'$'}sampleVariable}} will be replaced with variable value.
+ * Example:
+ *
+ * .env:
+ * sampleVariable=${'$'}prompt # require request from command line
+ *         sampleVariable2=just some value
+ * sampleVariable3=${'$'}{sampleVariable}.${'$'}{sampleVariable2}
+ *
+ * Result variables:
+ * sampleVariable=your input in console # lets imagine you typed it
+ * sampleVariable2=just some value
+ * sampleVariable3=your input in console.just some value
+ *
+ * To use these variables in template, you will need to write {{${'$'}sampleVariable}}.
+ * You may use it in text of files as well as in files/folders names.
+ *
+ * Usage: kotlin generator.kts [args] folders...
+ * Args:
+ * -e, --env: Path to file with args for generation; Use "${'$'}prompt" as values to read variable value from console
+ * -o, --outputFolder: Folder where templates should be used. Folder of calling by default
+ *         folders: Folders-templates
+ * -s, --skip: Skip variables setup
+ * -a, --args: Pass several for several args. Use with syntax `--args a=b` or `-a a=b` to set variable with key `a` to value `b`
+ */
+import java.io.File
+
+val console = System.console()
+
+var envFile: File? = null
+var outputFolder: File = File("./") // current folder by default
+val templatesFolders = mutableListOf<File>()
+var extensions: List<String>? = null
+var skipPrompts: Boolean = false
+val commandLineArgs = mutableMapOf<String, String>()
+val globalEnvs = System.getenv()
+
+fun String.replaceWithVariables(envs: Map<String, String>): String {
+    var currentString = this
+    var changed = false
+
+    do {
+        changed = false
+        envs.forEach { (k, v) ->
+            val previousString = currentString
+            currentString = currentString.replace("{{$${k}}}", v)
+            changed = changed || currentString != previousString
+        }
+    } while (changed)
+
+    return currentString
+}
+
+fun requestVariable(variableName: String, defaultValue: String?): String {
+    console.printf("Enter value for variable $variableName${defaultValue ?.let { " [$it]" } ?: ""}: ")
+    return console.readLine().ifEmpty { defaultValue } ?: ""
+}
+
+fun readEnvs(content: String, presets: Map<String, String>?): Map<String, String> {
+    val initialEnvs = mutableMapOf<String, String>()
+    val contentAsMap = mutableMapOf<String, String>()
+    content.split("\n").forEach {
+        val withoutComment = it.replace(Regex("\\#.*"), "")
+
+        runCatching {
+            val (key, value) = withoutComment.split("=")
+
+            contentAsMap[key] = value
+        }
+    }
+
+    if (skipPrompts) {
+        initialEnvs.putAll(
+            contentAsMap + (presets ?: emptyMap()) + globalEnvs + commandLineArgs
+        )
+    } else {
+        contentAsMap.forEach { (key, value) ->
+            val existsValue = presets ?.get(key) ?: commandLineArgs[key] ?: globalEnvs[key]
+            initialEnvs[key] = when {
+                value == "\$prompt" -> requestVariable(key, existsValue)
+                else -> requestVariable(key, value.replaceWithVariables(initialEnvs))
+            }
+        }
+    }
+    var i = 0
+    val readEnvs = initialEnvs.toMutableMap()
+    while (i < readEnvs.size) {
+        val key = readEnvs.keys.elementAt(i)
+        val currentValue = readEnvs.getValue(key)
+        val withReplaced = currentValue.replaceWithVariables(readEnvs)
+        var changed = false
+        if (withReplaced != currentValue) {
+            i = 0
+            readEnvs[key] = withReplaced
+        } else {
+            i++
+        }
+    }
+    return (presets ?: emptyMap()) + readEnvs
+}
+
+fun readParameters() {
+    var i = 0
+    while (i < args.size) {
+        val arg = args[i]
+        when (arg) {
+            "--env",
+            "-e" -> {
+                i++
+                envFile = File(args[i])
+            }
+            "--skip",
+            "-s" -> {
+                skipPrompts = true
+            }
+            "--extensions",
+            "-ex" -> {
+                i++
+                extensions = args[i].split(",")
+            }
+            "--outputFolder",
+            "-o" -> {
+                i++
+                outputFolder = File(args[i])
+            }
+            "--args",
+            "-a" -> {
+                i++
+                val subarg = args[i]
+                val key = subarg.takeWhile { it != '=' }
+                val value = subarg.dropWhile { it != '=' }.removePrefix("=")
+                commandLineArgs[key] = value
+            }
+            "--help",
+            "-h" -> {
+                println("""
+                    Generates files and folders as the have been put in the folder. Envs uses common syntax, but
+                    values may contains {{${'$'}sampleVariable}} parts, where {{${'$'}sampleVariable}} will be replaced with variable value.
+                    Example:
+                    
+                    .env:
+                    sampleVariable=${'$'}prompt # require request from command line
+                    sampleVariable2=just some value
+                    sampleVariable3=${'$'}{sampleVariable}.${'$'}{sampleVariable2}
+                    
+                    Result variables:
+                    sampleVariable=your input in console # lets imagine you typed it
+                    sampleVariable2=just some value
+                    sampleVariable3=your input in console.just some value
+                    
+                    To use these variables in template, you will need to write {{${'$'}sampleVariable}}.
+                    You may use it in text of files as well as in files/folders names.
+                    
+                    Usage: kotlin generator.kts [args] folders...
+                    Args:
+                        -e, --env: Path to file with args for generation; Use "${'$'}prompt" as values to read variable value from console
+                        -o, --outputFolder: Folder where templates should be used. Folder of calling by default
+                        folders: Folders-templates
+                        -s, --skip: Skip variables setup
+                        -a, --args: Pass several for several args. Use with syntax `--args a=b` or `-a a=b` to set variable with key `a` to value `b`
+                """.trimIndent())
+                Runtime.getRuntime().exit(0)
+            }
+            else -> {
+                val potentialFile = File(arg)
+                println("Potential file/folder as template: ${potentialFile.absolutePath}")
+                runCatching {
+                    if (potentialFile.exists()) {
+                        println("Adding file/folder as template: ${potentialFile.absolutePath}")
+                        templatesFolders.add(potentialFile)
+                    }
+                }.onFailure { e ->
+                    println("Unable to use folder $arg as template folder")
+                    e.printStackTrace()
+                }
+            }
+        }
+        i++
+    }
+}
+
+readParameters()
+
+val envs: MutableMap<String, String> = envFile ?.let { readEnvs(it.readText(), null) } ?.toMutableMap() ?: mutableMapOf()
+
+println(
+    """
+    Result environments:
+        ${envs.toList().joinToString("\n        ") { (k, v) -> "$k=$v" }}
+    Result extensions:
+        ${extensions ?.joinToString()}
+    Input folders:
+        ${templatesFolders.joinToString("\n        ") { it.absolutePath }}
+    Output folder:
+        ${outputFolder.absolutePath}
+    """.trimIndent()
+)
+
+fun File.handleTemplate(targetFolder: File, envs: Map<String, String>) {
+    println("Handling $absolutePath")
+    val localEnvs = File(absolutePath, ".env").takeIf { it.exists() } ?.let {
+        println("Reading .env in ${absolutePath}")
+        readEnvs(it.readText(), envs)
+    } ?: envs
+    println(
+        """
+    Local environments:
+        ${localEnvs.toList().joinToString("\n        ") { (k, v) -> "$k=$v" }}
+    """.trimIndent()
+    )
+    val newName = name.replaceWithVariables(localEnvs)
+    println("New name $newName")
+    when {
+        !exists() -> return
+        isFile -> {
+            val content = useLines {
+                it.map { it.replaceWithVariables(localEnvs) }.toList()
+            }.joinToString("\n")
+            val targetFile = File(targetFolder, newName)
+            targetFile.writeText(content)
+            println("Target file: ${targetFile.absolutePath}")
+        }
+        else -> {
+            val folder = File(targetFolder, newName)
+            println("Target folder: ${folder.absolutePath}")
+            folder.mkdirs()
+            listFiles() ?.forEach { fileOrFolder ->
+                fileOrFolder.handleTemplate(folder, localEnvs)
+            }
+        }
+    }
+}
+
+templatesFolders.forEach { folderOrFile ->
+    folderOrFile.handleTemplate(outputFolder, envs)
+}

tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/events/EventsList.json

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+[
+  {
+    "event_name": "activated",
+    "callback_args": ""
+  }
+]

tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/events/events_generator.main.kts

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+#!/usr/bin/env kotlin
+@file:DependsOn("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
+
+import kotlinx.serialization.json.*
+import java.io.File
+import java.lang.Runtime
+
+val rootFolder = File("../../../../../../../../")
+val rfAbsolutePath = rootFolder.absolutePath
+
+fun generateEvent(eventName: String, callbacks: String) {
+    val uppercaseEventName = eventName.take(1).uppercase() + eventName.drop(1)
+    val command = "${rfAbsolutePath}/.templates/generator.kts -s -a \"event_name=$eventName\" -a \"event_name_uppercase=$uppercaseEventName\" -a \"callback_args=$callbacks\" --env \"${rfAbsolutePath}/.templates/events/.env\" -o \"./\" -ex \"kt\" \"${rfAbsolutePath}/.templates/events/\""
+
+    Runtime.getRuntime().exec(command).waitFor()
+}
+
+val eventsList: JsonArray = Json.parseToJsonElement(File("EventsList.json").readText()).jsonArray
+
+eventsList.forEach {
+    generateEvent(
+        it.jsonObject["event_name"]!!.jsonPrimitive.content,
+        it.jsonObject["callback"] ?.jsonPrimitive ?.content ?: ""
+    )
+}
+
+println(eventsList.toString())