complete project

.idea/.gitignore

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+# Default ignored files
+/workspace.xml

.idea/compiler.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="projekt1" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

README.md

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+projekt nr 1

peopleData.txt

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+asdd, a s 90081900834

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>projekt1</groupId>
+    <artifactId>projekt1</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.8.5</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/company/DataSaver.java

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+package company;
+
+import java.io.*;
+
+public class DataSaver {
+
+    public DataSaver(String fileName) {
+        _fileName = fileName;
+    }
+
+    public void deleteFileIfExists() {
+        File fileToDelete = new File(_fileName);
+
+        if (fileToDelete.exists())
+            fileToDelete.delete();
+    }
+
+    public void deleteRowIfPeselExists(String pesel) throws IOException {
+        File file = new File(_fileName);
+        if (!file.exists())
+            return;
+
+        FileReader fileReader = new FileReader(file);
+        BufferedReader bufferedReader = new BufferedReader(fileReader);
+        int lineNumber = 0;
+        int lineToDelete = -1;
+        String line = null;
+        String lines = "";
+        boolean containsPesel = false;
+
+        while (true) {
+            lineNumber++;
+            line = bufferedReader.readLine();
+            if (line == null)
+                break;
+
+            if (line.contains(pesel)) {
+                containsPesel = true;
+                continue;
+            }
+
+            lines += line + "\n";
+        }
+
+        if (!containsPesel)
+            return;
+
+        fileReader.close();
+        bufferedReader.close();
+
+        FileWriter fileWriter = new FileWriter(file, false);
+        BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
+        bufferedWriter.write(lines);
+
+        bufferedWriter.close();
+        fileWriter.close();
+    }
+
+    public void savePersonalDataToFile(String city, String personalData) throws IOException {
+        File file = new File(_fileName);
+        FileWriter fileWriter = new FileWriter(file, true);
+        BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
+
+        bufferedWriter.write(city + ", " + personalData + "\n");
+
+        bufferedWriter.close();
+        fileWriter.close();
+    }
+
+    private int getLineNumberWithText(File file, String stringToSearch) throws IOException {
+        FileReader fileReader = new FileReader(file);
+        BufferedReader bufferedReader = new BufferedReader(fileReader);
+        String line = null;
+        int lineNumber = 0;
+        int lineToDelete = -1;
+
+        while (true) {
+            lineNumber++;
+            line = bufferedReader.readLine();
+            if (line == null)
+                break;
+
+            if (line.contains(stringToSearch)) {
+                lineToDelete = lineNumber;
+                break;
+            }
+        }
+
+        fileReader.close();
+        bufferedReader.close();
+
+        return lineToDelete;
+    }
+
+    private String _fileName;
+}

src/main/java/company/Main.java

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+package company;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+import static company.PeselValidator.validate;
+
+public class Main {
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
+        DataSaver dataSaver = new DataSaver("peopleData.txt");
+
+        String city;
+        String personalData;
+
+        System.out.println("Aby zakończyć wpisz STOP");
+        dataSaver.deleteFileIfExists();
+
+        while (true) {
+
+            System.out.println("PODAJ MIEJSCOWOWSC:");
+            city = readData(reader);
+            if(checkBreak(city)) return;
+
+            System.out.println("PODAJ IMIE I NAZWISKO ORAZ PESEL ODDZIELONE SPACJĄ:");
+            personalData = readData(reader);
+            if (checkBreak(personalData)) return;
+
+            var splitedData = personalData.split(" ");
+            var pesel = splitedData[splitedData.length - 1];
+
+            if (!validate(pesel)) {
+                System.out.println("Błąd - niepoprawny numer PESEL. Dane nie zostaną zapisane.");
+                continue;
+            }
+
+            dataSaver.deleteRowIfPeselExists(pesel);
+            dataSaver.savePersonalDataToFile(city, personalData);
+
+        }
+
+    }
+
+    private static boolean checkBreak(String word) {
+        if (word.equalsIgnoreCase("stop")) {
+            return true;
+        }
+        return false;
+    }
+
+    private static String readData(BufferedReader reader) throws IOException {
+        return reader.readLine();
+    }
+}

src/main/java/company/PeselValidator.java

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+package company;
+
+public class PeselValidator {
+
+    public static boolean validate(String pesel) {
+        if (pesel == null || pesel.length() != 11)
+            return false;
+
+        return validateControlSum(pesel);
+    }
+
+    private static boolean validateControlSum(String pesel) {
+        int controlSum = 0;
+        var weightings = new int[] { 1, 3, 7, 9, 1, 3, 7, 9, 1, 3 };
+        var peselArray = pesel.toCharArray();
+
+        for (int i = 0; i < 10; i++)
+        {
+            controlSum += Character.getNumericValue(peselArray[i]) * weightings[i];
+        }
+
+        controlSum = controlSum % 10;
+        controlSum = 10 - controlSum;
+        controlSum = controlSum % 10;
+
+        if (controlSum == Character.getNumericValue(peselArray[10]))
+            return true;
+
+        return false;
+    }
+}

src/test/java/company/DataSaverTests.java

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+package company;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+
+import java.io.*;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+public class DataSaverTests {
+    private DataSaver dataSaver;
+    private String testFileName = "test.txt";
+
+    @BeforeEach
+    public void initTests() throws IOException {
+        dataSaver = new DataSaver(testFileName);
+
+        addToTestFileInitialValues();
+    }
+
+    @Test
+    public void savePersonalDataToFile_ShouldSaveData() throws IOException {
+        var city = "Warszawa";
+        var personalData = "Jan Nowak 11223300456";
+        dataSaver.savePersonalDataToFile(city, personalData);
+
+        var textToFind = city + ", " + personalData;
+
+        assertTrue(checkFileContainsText(textToFind));
+    }
+
+    @Test
+    public void deleteRowIfPeselExists_ShouldDeleteRowWithPesel() throws IOException {
+        assertTrue(checkFileContainsText("Szczecin, Robert Kowalski 11223344567"));
+
+        dataSaver.deleteRowIfPeselExists("11223344567");
+
+        assertFalse(checkFileContainsText("Szczecin, Robert Kowalski 11223344567"));
+    }
+
+    private void addToTestFileInitialValues() throws IOException {
+        File file = new File(testFileName);
+        FileWriter fileWriter = new FileWriter(file, true);
+        BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
+
+        bufferedWriter.write("Szczecin, Robert Kowalski 11223344567\n");
+        bufferedWriter.write("Sopot, Witold Barman 99887766543\n");
+
+        bufferedWriter.close();
+        fileWriter.close();
+    }
+
+    private boolean checkFileContainsText(String textToCheck) throws IOException {
+        File file = new File(testFileName);
+        if (!file.exists())
+            return false;
+
+        FileReader fileReader = new FileReader(file);
+        BufferedReader bufferedReader = new BufferedReader(fileReader);
+
+        while (true) {
+            String line = bufferedReader.readLine();
+            if (line == null)
+                return false;
+
+            if (line.contains(textToCheck))
+                return true;
+        }
+    }
+}

src/test/java/company/PeselValidatorTests.java

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+package company;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+
+import static company.PeselValidator.validate;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+public class PeselValidatorTests {
+
+    @Test
+    public void validate_ShouldFail_IfLengthIsDifferentThan11() {
+        String invalidPesels[] = { "777", "123456789000" };
+
+        for (var pesel: invalidPesels) {
+            var result = validate(pesel);
+            assertFalse(result);
+        }
+    }
+
+    @Test
+    public void validate_ShouldFail_IfControlSumIsInvalid() {
+        String invalidPesels[] = { "12345678911", "84475900006", "33333210000" };
+
+        for (var pesel: invalidPesels) {
+            var result = validate(pesel);
+            assertFalse(result);
+        }
+    }
+
+    @Test
+    public void validate_ShouldFail_IfNull() {
+        var result = validate(null);
+        assertFalse(result);
+    }
+
+    @Test
+    public void validate_ShouldSuccess() {
+        String invalidPesels[] = { "92021585321", "86041014912", "04292933532" };
+
+        for (var pesel: invalidPesels) {
+            var result = validate(pesel);
+            assertTrue(result);
+        }
+    }
+}

target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst

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+company\DataSaver.class
+company\Main.class
+company\PeselValidator.class

target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

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+J:\IdeaProjects\projekt1\src\main\java\company\PeselValidator.java
+J:\IdeaProjects\projekt1\src\main\java\company\DataSaver.java
+J:\IdeaProjects\projekt1\src\main\java\company\Main.java

target/maven-status/maven-compiler-plugin/testCompile/default-testCompile/createdFiles.lst

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+company\PeselValidatorTests.class
+company\DataSaverTests.class

target/maven-status/maven-compiler-plugin/testCompile/default-testCompile/inputFiles.lst

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+J:\IdeaProjects\projekt1\src\test\java\company\PeselValidatorTests.java
+J:\IdeaProjects\projekt1\src\test\java\company\DataSaverTests.java

test.txt

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+Poznan, Adam Nowacki 84112293464
+Warszawa, Arnold Szwarceneger 77070847486
+Sopot, Witold Barman 99887766543