From c7dec0b8dcda4913096cfe9b69a591daf9245240 Mon Sep 17 00:00:00 2001
From: "voronkov.konstantin" <voronkov.konstantin@rt.ru>
Date: Mon, 16 May 2022 18:29:11 +0300
Subject: [PATCH] Voronkov.K. hw-2

---
 .../iam/thevoid/epic/timeapp/MainActivity.kt  | 143 ++++++++++++++++--
 1 file changed, 134 insertions(+), 9 deletions(-)

diff --git a/app/src/main/java/iam/thevoid/epic/timeapp/MainActivity.kt b/app/src/main/java/iam/thevoid/epic/timeapp/MainActivity.kt
index d08be6e..474b887 100644
--- a/app/src/main/java/iam/thevoid/epic/timeapp/MainActivity.kt
+++ b/app/src/main/java/iam/thevoid/epic/timeapp/MainActivity.kt
@@ -1,10 +1,22 @@
 package iam.thevoid.epic.timeapp
 
-import androidx.appcompat.app.AppCompatActivity
+import android.annotation.SuppressLint
+import android.graphics.Color
 import android.os.Bundle
+import android.text.format.DateUtils
 import android.widget.Button
 import android.widget.EditText
 import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.core.Observable
+import io.reactivex.rxjava3.disposables.Disposable
+import io.reactivex.rxjava3.schedulers.Schedulers
+import java.text.SimpleDateFormat
+import java.time.LocalTime
+import java.time.format.DateTimeFormatter
+import java.util.*
+import java.util.concurrent.TimeUnit
 
 // Дан экран с готовой разметкой
 // Реализовать при помощи RxJava
@@ -27,34 +39,147 @@ import android.widget.TextView
 //       состояния паузы
 
 class MainActivity : AppCompatActivity() {
-
     // Часы:
     private lateinit var clockText: TextView
-
     // Обратный отсчёт
     private lateinit var countdownText: TextView
     private lateinit var countdownSecondsEditText: EditText
     private lateinit var countdownStartButton: Button
-
     // Секундомер
     private lateinit var stopwatchText: TextView
     private lateinit var stopwatchMillisText: TextView
-    private lateinit var stopwatchStartButton: EditText
-    private lateinit var stopwatchEndButton: EditText
+    private lateinit var stopwatchStartButton: Button
+    private lateinit var stopwatchEndButton: Button
+
+    enum class StopwatchState { RUN, STOP, PAUSE }
+
+    private var disposableTimer: Disposable? = null
+    private var disposableStopwatch: Disposable? = null
+
+    private fun disposeTimer() {
+        disposableTimer?.dispose()
+        disposableTimer = null
+    }
+
+    private fun disposeStopwatch() {
+        disposableStopwatch?.dispose()
+        disposableStopwatch = null
+    }
+
+
+    @SuppressLint("pop")
+    override fun onStart() {
+        super.onStart()
+
+        /**
+         * Таймер
+         */
+        countdownStartButton.setOnClickListener {
+            disposeTimer()
+            val input = countdownSecondsEditText.text.toString()
+                .toLongOrNull() ?: 0L
+            disposableTimer = Observable.interval(1, TimeUnit.SECONDS, Schedulers.io())
+                .takeUntil { it >= input }
+                .map { s ->
+                    DateUtils
+                        .formatElapsedTime(input - s)
+                }
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(
+                    { i ->
+                        countdownText.text = i
+                        countdownText.setTextColor(Color.BLACK)
+                    },
+                    {}
+                )
+                {
+                    disposeTimer()
+                    countdownText.setTextColor(Color.RED)
+                    countdownSecondsEditText.text = null
+                }
+        }
+
+        /**
+         * Секундомер
+         */
+        var stopwatchState = StopwatchState.STOP
+        var milliseconds = 0L
+        stopwatchStartButton.setOnClickListener {
+            when (stopwatchState) {
+                StopwatchState.PAUSE, StopwatchState.STOP -> {
+                    stopwatchState = StopwatchState.RUN
+                    stopwatchStartButton.text = "START"
+                    stopwatchEndButton.text = "PAUSE"
+                }
+                StopwatchState.RUN -> {
+                    milliseconds = 0L
+                    disposeStopwatch()
+                }
+            }
+            //disposeStopwatch()
+            disposableStopwatch = Observable.interval(1, TimeUnit.MILLISECONDS, Schedulers.io())
+                .takeWhile { stopwatchState == StopwatchState.RUN }
+                .map { milliseconds + it }
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe {
+                    stopwatchText.text = LocalTime.ofSecondOfDay(it / 1000)
+                        .format(DateTimeFormatter.ofPattern("HH:mm:ss"))
+                    stopwatchMillisText.text = (it % 1000).toString()
+                }
+        }
+
+        stopwatchEndButton.setOnClickListener {
+            disposeStopwatch()
+            when (stopwatchState) {
+                StopwatchState.RUN -> {
+                    stopwatchState = StopwatchState.PAUSE
+                    stopwatchStartButton.text = "RUN"
+                    stopwatchEndButton.text = "STOP"
+                    milliseconds = LocalTime.parse(
+                        stopwatchText.text,
+                        DateTimeFormatter.ofPattern("HH:mm:ss")
+                    ).toSecondOfDay() * 1000L
+                }
+                StopwatchState.PAUSE -> {
+                    stopwatchState = StopwatchState.STOP
+                    milliseconds = 0L
+                    stopwatchText.setText("00:00:00")
+                    stopwatchMillisText.setText("00")
+                    stopwatchStartButton.text = "START"
+                    stopwatchEndButton.text = "PAUSE"
+                    disposeStopwatch()
+                }
+            }
+        }
+    }
+
+    override fun onStop() {
+        super.onStop()
+        disposeTimer()
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
-
         clockText = findViewById(R.id.clockText)
-
         countdownText = findViewById(R.id.countdownText)
         countdownSecondsEditText = findViewById(R.id.countdownEditText)
         countdownStartButton = findViewById(R.id.countdownStartButton)
-
         stopwatchText = findViewById(R.id.stopwatchText)
         stopwatchMillisText = findViewById(R.id.stopwatchMillisText)
         stopwatchStartButton = findViewById(R.id.stopwatchStartButton)
         stopwatchEndButton = findViewById(R.id.stopwatchEndButton)
+
+        /**
+         * Часы
+         */
+        Observable.interval(1, TimeUnit.SECONDS)
+            .map {
+                SimpleDateFormat.getTimeInstance()
+                    .format(Calendar.getInstance().time)
+            }
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe { i -> clockText.text = i }
     }
 }
\ No newline at end of file