resolve homework jv-salary-info

src/main/java/core/basesyntax/SalaryInfo.java

@@ -1,7 +1,52 @@
 package core.basesyntax;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+
 public class SalaryInfo {
+    private static final int NAME_OF_PERSON = 1;
+    private static final int DATA = 0;
+    private static final int WORKING_HOUR = 2;
+    private static final int INCOME_PER_HOUR = 3;
+    private static final String SEPARATOR = " - ";
+    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("dd.MM.yyyy");
+
     public String getSalaryInfo(String[] names, String[] data, String dateFrom, String dateTo) {
-        return null;
+        StringBuilder result = new StringBuilder("Report for period ").append(dateFrom)
+                .append(SEPARATOR).append(dateTo);
+        for (String name : names) {
+            int earnedMoneyByPerson = getEarnedMoney(data, name, dateFrom, dateTo);
+            result.append(System.lineSeparator()).append(name).append(SEPARATOR)
+                    .append(earnedMoneyByPerson);
+        }
+        System.out.println(result);
+        return result.toString();
+    }
+
+    private int getEarnedMoney(String[] data, String nameOfPerson, String dateFrom, String dateTo) {
+        int sum = 0;
+        for (String elementOfData : data) {
+            String[] detailsOfElementOfData = elementOfData.split(" ");
+            if (detailsOfElementOfData[NAME_OF_PERSON].equals(nameOfPerson)) {
+                LocalDate particularData = null;
+                LocalDate fromDate = null;
+                LocalDate toDate = null;
+                try {
+                    particularData = LocalDate.parse(detailsOfElementOfData[DATA], FORMATTER);
+                    fromDate = LocalDate.parse(dateFrom, FORMATTER);
+                    toDate = LocalDate.parse(dateTo, FORMATTER);
+                    fromDate = fromDate.minusDays(1);
+                    toDate = toDate.plusDays(1);
+                } catch (DateTimeParseException e) {
+                    throw new RuntimeException("There was an error parsing data");
+                }
+                if (particularData.isAfter(fromDate) && particularData.isBefore(toDate)) {
+                    sum += Integer.parseInt(detailsOfElementOfData[WORKING_HOUR])
+                            * Integer.parseInt(detailsOfElementOfData[INCOME_PER_HOUR]);
+                }
+            }
+        }
+        return sum;
     }
 }