java-online-course · Ibragimov18Timur · Sep 26, 2021
diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java
@@ -1,5 +1,8 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.*;
+import java.nio.file.Files;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,9 +13,23 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        long c = 0;
+        File dir = new File("src/main/resources/" + path);
+        File[] dirs = dir.listFiles();
+        if (dirs != null) {
+            for (File file : dirs) {
+                if (file.isFile()) {
+                    c++;
+                }
+                if (file.isDirectory()) {
+                    c += countFilesInDirectory(path + "/" + file.getName());
+                }
+            }
+        }
+        return c;
     }
 
+
     /**
      * Метод рекурсивно подсчитывает количество папок в директории, считая корень
      *
@@ -21,7 +38,21 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+
+        long c = 1;
+        File dir = new File("src/main/resources/" + path);
+        File[] dirs = dir.listFiles();
+        if (dirs != null) {
+            for (File file : dirs) {
+                if (file.isDirectory()) {
+                    c++;
+                }
+                if (file.isDirectory()) {
+                    c += countDirsInDirectory(path + "/" + file.getName()) - 1;
+                }
+            }
+        }
+        return c;
     }
 
     /**
@@ -32,7 +63,16 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        File dirFrom = new File(from);
+        File dirTo = new File(to);
+        if (!dirTo.getParentFile().exists()) {
+            dirTo.getParentFile().mkdirs();
+        }
+        try {
+            Files.copy(dirFrom.getAbsoluteFile().toPath(), dirTo.getAbsoluteFile().toPath());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     /**
@@ -44,9 +84,19 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
+        String targetFolder = "target/classes/";
+        File dir = new File(targetFolder + path);
+        dir.mkdir();
+        File file = new File(dir.getPath() + File.separator + name);
+        try {
+            return file.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return false;
     }
 
+
     /**
      * Метод считывает тело файла .txt из папки src/main/resources
      *
@@ -55,6 +105,17 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        String textFromFile = "";
+        try (BufferedReader reader = new BufferedReader(
+                new FileReader("src/main/resources" + File.separator + fileName))) {
+            while (reader.ready()) {
+                textFromFile += reader.readLine();
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return textFromFile;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java
@@ -2,6 +2,7 @@
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 
 public class SimpleBigNumbersService implements BigNumbersService {
 
@@ -13,7 +14,9 @@ public class SimpleBigNumbersService implements BigNumbersService {
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        BigDecimal aBig = new BigDecimal(a);
+        BigDecimal bBig = new BigDecimal(b);
+        return aBig.divide(bBig, range, RoundingMode.HALF_UP);
     }
 
     /**
@@ -24,6 +27,10 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger simpleNum = new BigInteger("2");
+        for(int i = 0; i < range; i++){
+            simpleNum = simpleNum.nextProbablePrime();
+        }
+        return simpleNum;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java
@@ -2,6 +2,7 @@
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.Year;
 import java.time.format.DateTimeFormatter;
 
 public class SimpleDateService implements DateService {
@@ -14,7 +15,7 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        return localDate.format(DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
     /**
@@ -25,7 +26,8 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+
+        return LocalDateTime.parse(string, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
     }
 
     /**
@@ -37,7 +39,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,18 +49,28 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        long year = Year.now().getValue();
+        do {
+            year++;
+        } while (!Year.isLeap(year));
+
+        return year;
     }
 
+
     /**
      * Метод считает число секунд в заданном году
      *
      * @return число секунд
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
-    }
 
+        int daysInYear = 365;
+        if (Year.isLeap(year)) {
+            daysInYear = 366;
+        }
+        return daysInYear * 24 * 3600;
 
+    }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java
@@ -1,5 +1,14 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,6 +20,24 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
+        File file = new File("src/main/resources", "sensitive_data.txt");
+        Pattern pattern = Pattern.compile("\\d{4}\\s(\\d{4}?)\\s(\\d{4}?)\\s\\d{4}");
+        Matcher matcher;
+        int counter = 0;
+        try {
+            List<String> result = Files.readAllLines(file.toPath());
+            while (counter < result.size()){
+                matcher = pattern.matcher(result.get(counter));
+                while (matcher.find()) {
+                    String[] parts = matcher.group().split(" ");
+                    result.set(counter, result.get(counter).replaceFirst(String.valueOf(pattern), parts[0] + " **** **** " + parts[parts.length - 1]));
+                }
+                counter++;
+            }
+            return result.get(0);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return null;
     }
 
@@ -22,6 +49,21 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        String text = "";
+        try (BufferedReader reader = new BufferedReader(new FileReader("src/main/resources/sensitive_data.txt"))) {
+            text = reader.readLine();
+            Pattern pattern = Pattern.compile("\\$\\{.*?}");
+            Matcher matcher = pattern.matcher(text);
+            while (matcher.find()) {
+                if (matcher.group().equals("${payment_amount}")) {
+                    text = text.replaceAll("\\$\\{payment_amount}", String.valueOf((int)paymentAmount));
+                } else if (matcher.group().equals("${balance}")) {
+                    text = text.replaceAll("\\$\\{balance}", String.valueOf((int)balance));
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return text;
     }
-}
+}
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java
@@ -1,5 +1,9 @@
 package com.epam.izh.rd.online.service;
 
+import java.util.Locale;
+
+import static java.awt.SystemColor.text;
+
 public class SimpleTextService implements TextService {
 
     /**
@@ -12,8 +16,8 @@ public class SimpleTextService implements TextService {
      * @param remove - строка которую необходимо удалить
      */
     @Override
-    public String removeString(String base, String remove) {
-        return null; //TODO
+    public String removeString(String base, String remove)
+    {      return base.replaceAll(remove, "");
     }
 
     /**
@@ -23,9 +27,9 @@ public String removeString(String base, String remove) {
      * Например для строки "Hello, hello, hello!" метод вернет false
      */
     @Override
-    public boolean isQuestionString(String text) {
-        return false; //TODO
-    }
+    public boolean isQuestionString(String text){
+         return text.endsWith("?");
+}
 
     /**
      * Реализовать функционал соединения переданных строк.
@@ -35,7 +39,11 @@ public boolean isQuestionString(String text) {
      */
     @Override
     public String concatenate(String... elements) {
-        return null; //TODO
+        StringBuilder aBuilder = new StringBuilder();
+        for (int i = 0; i < elements.length; i++) {
+            aBuilder.append(elements[i]);
+        }
+        return aBuilder.toString();
     }
 
     /**
@@ -47,7 +55,11 @@ public String concatenate(String... elements) {
      */
     @Override
     public String toJumpCase(String text) {
-        return null; //TODO
+        char[] chars = text.toLowerCase().toCharArray();
+        for (int i = 1; i < chars.length; i += 2) {
+            chars[i] = Character.toUpperCase(chars[i]);
+        }
+        return new String(chars);
     }
 
     /**
@@ -59,6 +71,11 @@ public String toJumpCase(String text) {
      */
     @Override
     public boolean isPalindrome(String string) {
-       return false; //TODO
+        String raw = string.toLowerCase(Locale.ROOT).replace(" ", "").replace(",", "");
+        String palindrome = new StringBuilder(raw).reverse().toString();
+        if (raw.isEmpty()) {
+            return false;
+        }
+        return palindrome.equals(raw);
     }
 }