Sprint7 project2

src/main/kotlin/Main.kt

@@ -1,3 +1,7 @@
-fun main(args: Array<String>) {
-    println("Hello World!")
-}
+import java.util.Scanner
+
+fun main() {
+    val scanner = Scanner(System.`in`)
+    val app = NotesApp(scanner)
+    app.start()
+}

src/main/kotlin/Models.kt

@@ -0,0 +1,8 @@
+class MenuItem(val title: String, val action: () -> Unit)
+
+data class Note(val title: String, val text: String)
+
+class Archive(val name: String) {
+    val notes: MutableList<Note> = mutableListOf()
+    fun getNote(index: Int): Note? = notes.getOrNull(index)
+}

src/main/kotlin/NotesApp.kt

@@ -0,0 +1,69 @@
+import java.util.Scanner
+
+class NotesApp(private val scanner: Scanner) {
+    private val storage = Storage()
+    private val ui = UI(scanner)
+
+    fun start() {
+        var flag = true
+        while (flag) {
+            val archives = storage.getArchiveNames()
+            val menu = mutableListOf<MenuItem>()
+            menu.add(MenuItem("Создать архив") { createArchive() })
+            archives.forEachIndexed { idx, name ->
+                menu.add(MenuItem("${name}") { selectArchive(idx) })
+            }
+            menu.add(MenuItem("Выход") { flag = false })
+            ui.showMenu("Список архивов:", menu)
+        }
+    }
+
+    private fun createArchive() {
+        ui.printLine("Введите название архива:")
+        val name = scanner.nextLine()
+        if (name.isBlank()) return
+        storage.addArchive(Archive(name))
+    }
+
+    private fun selectArchive(index: Int) {
+        val archive = storage.getArchive(index) ?: return
+        var flag = true
+
+        while (flag) {
+            val menu = mutableListOf<MenuItem>()
+            menu.add(MenuItem("Создать заметку") { createNote(archive) })
+            archive.notes.forEachIndexed { idx, note ->
+                menu.add(MenuItem(note.title) { selectNote(archive, idx) })
+            }
+            menu.add(MenuItem("Назад") { flag = false })
+            ui.showMenu("Архив: ${archive.name}", menu)
+        }
+    }
+
+    private fun createNote(archive: Archive) {
+        ui.printLine("Введите заголовок заметки:")
+        val title = scanner.nextLine()
+        if (title.isBlank()) return
+        ui.printLine("Введите текст заметки:")
+        val text = scanner.nextLine()
+        if (text.isBlank()) return
+
+        archive.notes.add(Note(title, text))
+    }
+
+    private fun selectNote(archive: Archive, index: Int) {
+        val note = archive.getNote(index) ?: return
+        var flag = true
+
+        while (flag) {
+            val menu = mutableListOf<MenuItem>()
+            menu.add(MenuItem("Показать текст") {
+                ui.printLine("-----")
+                ui.printLine(note.text)
+                ui.printLine("-----")
+            })
+            menu.add(MenuItem("Назад") { flag = false })
+            ui.showMenu("Заметка: ${note.title}", menu)
+        }
+    }
+}

src/main/kotlin/Storage.kt

@@ -0,0 +1,6 @@
+class Storage {
+    private val archives: MutableList<Archive> = mutableListOf()
+    fun addArchive(a: Archive) { archives.add(a) }
+    fun getArchive(index: Int): Archive? = archives.getOrNull(index)
+    fun getArchiveNames(): List<String> = archives.map { it.name }
+}

src/main/kotlin/UI.kt

@@ -0,0 +1,31 @@
+import java.util.Scanner
+
+class UI(private val scanner: Scanner) {
+    fun showMenu(title: String, items: List<MenuItem>) {
+        while (true) {
+            println()
+            println(title)
+            items.forEachIndexed { i, it -> println("${i}. ${it.title}") }
+            val input = readLineSafe()
+            val idx = input.toIntOrNull()
+            if (idx == null || idx !in items.indices) {
+                println("Некорректный ввод")
+                continue
+            }
+            items[idx].action()
+            break
+        }
+    }
+
+    fun printLine(s: String) {
+        println(s)
+    }
+
+    private fun readLineSafe(): String {
+        return try {
+            scanner.nextLine()
+        } catch (e: Exception) {
+            ""
+        }
+    }
+}