diff --git a/.gitignore b/.gitignore new file mode 100644 index 00000000..daad2436 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +target +.idea/ +out/ +toll-calculator.iml diff --git a/C#/Car.cs b/C#/Car.cs deleted file mode 100644 index 6015da69..00000000 --- a/C#/Car.cs +++ /dev/null @@ -1,16 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Linq; -using System.Text; -using System.Threading.Tasks; - -namespace TollFeeCalculator -{ - public class Car : Vehicle - { - public String GetVehicleType() - { - return "Car"; - } - } -} \ No newline at end of file diff --git a/C#/LICENSE b/C#/LICENSE deleted file mode 100644 index 9cecc1d4..00000000 --- a/C#/LICENSE +++ /dev/null @@ -1,674 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -. diff --git a/C#/Motorbike.cs b/C#/Motorbike.cs deleted file mode 100644 index 8258109f..00000000 --- a/C#/Motorbike.cs +++ /dev/null @@ -1,16 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Linq; -using System.Text; -using System.Threading.Tasks; - -namespace TollFeeCalculator -{ - public class Motorbike : Vehicle - { - public string GetVehicleType() - { - return "Motorbike"; - } - } -} diff --git a/C#/TollCalculator.cs b/C#/TollCalculator.cs deleted file mode 100644 index b24c794d..00000000 --- a/C#/TollCalculator.cs +++ /dev/null @@ -1,108 +0,0 @@ -using System; -using System.Globalization; -using TollFeeCalculator; - -public class TollCalculator -{ - - /** - * Calculate the total toll fee for one day - * - * @param vehicle - the vehicle - * @param dates - date and time of all passes on one day - * @return - the total toll fee for that day - */ - - public int GetTollFee(Vehicle vehicle, DateTime[] dates) - { - DateTime intervalStart = dates[0]; - int totalFee = 0; - foreach (DateTime date in dates) - { - int nextFee = GetTollFee(date, vehicle); - int tempFee = GetTollFee(intervalStart, vehicle); - - long diffInMillies = date.Millisecond - intervalStart.Millisecond; - long minutes = diffInMillies/1000/60; - - if (minutes <= 60) - { - if (totalFee > 0) totalFee -= tempFee; - if (nextFee >= tempFee) tempFee = nextFee; - totalFee += tempFee; - } - else - { - totalFee += nextFee; - } - } - if (totalFee > 60) totalFee = 60; - return totalFee; - } - - private bool IsTollFreeVehicle(Vehicle vehicle) - { - if (vehicle == null) return false; - String vehicleType = vehicle.GetVehicleType(); - return vehicleType.Equals(TollFreeVehicles.Motorbike.ToString()) || - vehicleType.Equals(TollFreeVehicles.Tractor.ToString()) || - vehicleType.Equals(TollFreeVehicles.Emergency.ToString()) || - vehicleType.Equals(TollFreeVehicles.Diplomat.ToString()) || - vehicleType.Equals(TollFreeVehicles.Foreign.ToString()) || - vehicleType.Equals(TollFreeVehicles.Military.ToString()); - } - - public int GetTollFee(DateTime date, Vehicle vehicle) - { - if (IsTollFreeDate(date) || IsTollFreeVehicle(vehicle)) return 0; - - int hour = date.Hour; - int minute = date.Minute; - - if (hour == 6 && minute >= 0 && minute <= 29) return 8; - else if (hour == 6 && minute >= 30 && minute <= 59) return 13; - else if (hour == 7 && minute >= 0 && minute <= 59) return 18; - else if (hour == 8 && minute >= 0 && minute <= 29) return 13; - else if (hour >= 8 && hour <= 14 && minute >= 30 && minute <= 59) return 8; - else if (hour == 15 && minute >= 0 && minute <= 29) return 13; - else if (hour == 15 && minute >= 0 || hour == 16 && minute <= 59) return 18; - else if (hour == 17 && minute >= 0 && minute <= 59) return 13; - else if (hour == 18 && minute >= 0 && minute <= 29) return 8; - else return 0; - } - - private Boolean IsTollFreeDate(DateTime date) - { - int year = date.Year; - int month = date.Month; - int day = date.Day; - - if (date.DayOfWeek == DayOfWeek.Saturday || date.DayOfWeek == DayOfWeek.Sunday) return true; - - if (year == 2013) - { - if (month == 1 && day == 1 || - month == 3 && (day == 28 || day == 29) || - month == 4 && (day == 1 || day == 30) || - month == 5 && (day == 1 || day == 8 || day == 9) || - month == 6 && (day == 5 || day == 6 || day == 21) || - month == 7 || - month == 11 && day == 1 || - month == 12 && (day == 24 || day == 25 || day == 26 || day == 31)) - { - return true; - } - } - return false; - } - - private enum TollFreeVehicles - { - Motorbike = 0, - Tractor = 1, - Emergency = 2, - Diplomat = 3, - Foreign = 4, - Military = 5 - } -} \ No newline at end of file diff --git a/C#/Vehicle.cs b/C#/Vehicle.cs deleted file mode 100644 index 19fe04e4..00000000 --- a/C#/Vehicle.cs +++ /dev/null @@ -1,13 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Linq; -using System.Text; -using System.Threading.Tasks; - -namespace TollFeeCalculator -{ - public interface Vehicle - { - String GetVehicleType(); - } -} \ No newline at end of file diff --git a/Java/Car.java b/Java/Car.java deleted file mode 100644 index e0ec832c..00000000 --- a/Java/Car.java +++ /dev/null @@ -1,7 +0,0 @@ - -public class Car implements Vehicle { - @Override - public String getType() { - return "Car"; - } -} diff --git a/Java/Motorbike.java b/Java/Motorbike.java deleted file mode 100644 index 14056ff9..00000000 --- a/Java/Motorbike.java +++ /dev/null @@ -1,7 +0,0 @@ - -public class Motorbike implements Vehicle { - @Override - public String getType() { - return "Motorbike"; - } -} diff --git a/Java/TollCalculator.java b/Java/TollCalculator.java deleted file mode 100644 index d239f327..00000000 --- a/Java/TollCalculator.java +++ /dev/null @@ -1,110 +0,0 @@ - -import java.util.*; -import java.util.concurrent.*; - -public class TollCalculator { - - /** - * Calculate the total toll fee for one day - * - * @param vehicle - the vehicle - * @param dates - date and time of all passes on one day - * @return - the total toll fee for that day - */ - public int getTollFee(Vehicle vehicle, Date... dates) { - Date intervalStart = dates[0]; - int totalFee = 0; - for (Date date : dates) { - int nextFee = getTollFee(date, vehicle); - int tempFee = getTollFee(intervalStart, vehicle); - - TimeUnit timeUnit = TimeUnit.MINUTES; - long diffInMillies = date.getTime() - intervalStart.getTime(); - long minutes = timeUnit.convert(diffInMillies, TimeUnit.MILLISECONDS); - - if (minutes <= 60) { - if (totalFee > 0) totalFee -= tempFee; - if (nextFee >= tempFee) tempFee = nextFee; - totalFee += tempFee; - } else { - totalFee += nextFee; - } - } - if (totalFee > 60) totalFee = 60; - return totalFee; - } - - private boolean isTollFreeVehicle(Vehicle vehicle) { - if(vehicle == null) return false; - String vehicleType = vehicle.getType(); - return vehicleType.equals(TollFreeVehicles.MOTORBIKE.getType()) || - vehicleType.equals(TollFreeVehicles.TRACTOR.getType()) || - vehicleType.equals(TollFreeVehicles.EMERGENCY.getType()) || - vehicleType.equals(TollFreeVehicles.DIPLOMAT.getType()) || - vehicleType.equals(TollFreeVehicles.FOREIGN.getType()) || - vehicleType.equals(TollFreeVehicles.MILITARY.getType()); - } - - public int getTollFee(final Date date, Vehicle vehicle) { - if(isTollFreeDate(date) || isTollFreeVehicle(vehicle)) return 0; - Calendar calendar = GregorianCalendar.getInstance(); - calendar.setTime(date); - int hour = calendar.get(Calendar.HOUR_OF_DAY); - int minute = calendar.get(Calendar.MINUTE); - - if (hour == 6 && minute >= 0 && minute <= 29) return 8; - else if (hour == 6 && minute >= 30 && minute <= 59) return 13; - else if (hour == 7 && minute >= 0 && minute <= 59) return 18; - else if (hour == 8 && minute >= 0 && minute <= 29) return 13; - else if (hour >= 8 && hour <= 14 && minute >= 30 && minute <= 59) return 8; - else if (hour == 15 && minute >= 0 && minute <= 29) return 13; - else if (hour == 15 && minute >= 0 || hour == 16 && minute <= 59) return 18; - else if (hour == 17 && minute >= 0 && minute <= 59) return 13; - else if (hour == 18 && minute >= 0 && minute <= 29) return 8; - else return 0; - } - - private Boolean isTollFreeDate(Date date) { - Calendar calendar = GregorianCalendar.getInstance(); - calendar.setTime(date); - int year = calendar.get(Calendar.YEAR); - int month = calendar.get(Calendar.MONTH); - int day = calendar.get(Calendar.DAY_OF_MONTH); - - int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK); - if (dayOfWeek == Calendar.SATURDAY || dayOfWeek == Calendar.SUNDAY) return true; - - if (year == 2013) { - if (month == Calendar.JANUARY && day == 1 || - month == Calendar.MARCH && (day == 28 || day == 29) || - month == Calendar.APRIL && (day == 1 || day == 30) || - month == Calendar.MAY && (day == 1 || day == 8 || day == 9) || - month == Calendar.JUNE && (day == 5 || day == 6 || day == 21) || - month == Calendar.JULY || - month == Calendar.NOVEMBER && day == 1 || - month == Calendar.DECEMBER && (day == 24 || day == 25 || day == 26 || day == 31)) { - return true; - } - } - return false; - } - - private enum TollFreeVehicles { - MOTORBIKE("Motorbike"), - TRACTOR("Tractor"), - EMERGENCY("Emergency"), - DIPLOMAT("Diplomat"), - FOREIGN("Foreign"), - MILITARY("Military"); - private final String type; - - TollFreeVehicles(String type) { - this.type = type; - } - - public String getType() { - return type; - } - } -} - diff --git a/Java/Vehicle.java b/Java/Vehicle.java deleted file mode 100644 index 289ec7df..00000000 --- a/Java/Vehicle.java +++ /dev/null @@ -1,5 +0,0 @@ - -public interface Vehicle { - - public String getType(); -} diff --git a/pom.xml b/pom.xml new file mode 100644 index 00000000..3ea755f8 --- /dev/null +++ b/pom.xml @@ -0,0 +1,51 @@ + + + 4.0.0 + + evolve + toll-calculator + 1.0-SNAPSHOT + + + 2.14.1 + + + + junit + junit + 4.12 + test + + + org.apache.logging.log4j + log4j-api + ${log4j2.version} + + + org.apache.logging.log4j + log4j-core + ${log4j2.version} + + + org.yaml + snakeyaml + 1.21 + + + + + + + org.apache.maven.plugins + maven-compiler-plugin + 3.8.1 + + 8 + 8 + + + + + diff --git a/src/main/java/com/evolve/data/TollPeriod.java b/src/main/java/com/evolve/data/TollPeriod.java new file mode 100644 index 00000000..be8cccf6 --- /dev/null +++ b/src/main/java/com/evolve/data/TollPeriod.java @@ -0,0 +1,51 @@ +package com.evolve.data; + +import java.time.LocalTime; + +public class TollPeriod { + private LocalTime start; + private LocalTime end; + private int fee; + + public TollPeriod() { + } + + public TollPeriod(LocalTime start, LocalTime end, int fee) { + this.start = start; + this.end = end; + this.fee = fee; + } + + public LocalTime getStart() { + return start; + } + + public void setStart(LocalTime start) { + this.start = start; + } + + public LocalTime getEnd() { + return end; + } + + public void setEnd(LocalTime end) { + this.end = end; + } + + public int getFee() { + return fee; + } + + public void setFee(int fee) { + this.fee = fee; + } + + @Override + public String toString() { + return "TollPeriod{" + + "start=" + start + + ", end=" + end + + ", fee=" + fee + + '}'; + } +} diff --git a/src/main/java/com/evolve/data/TollPeriodConfig.java b/src/main/java/com/evolve/data/TollPeriodConfig.java new file mode 100644 index 00000000..64af02b5 --- /dev/null +++ b/src/main/java/com/evolve/data/TollPeriodConfig.java @@ -0,0 +1,27 @@ +package com.evolve.data; + +import java.util.ArrayList; +import java.util.List; + +public class TollPeriodConfig { + private List tollPeriods; + + public TollPeriodConfig() { + tollPeriods = new ArrayList<>(); + } + + public List getTollPeriods() { + return tollPeriods; + } + + public void setTollPeriods(List tollPeriods) { + this.tollPeriods = tollPeriods; + } + + @Override + public String toString() { + return "TollPeriodConfig{" + + "tollPeriods=" + tollPeriods + + '}'; + } +} diff --git a/src/main/java/com/evolve/data/TollPeriodString.java b/src/main/java/com/evolve/data/TollPeriodString.java new file mode 100644 index 00000000..9c211800 --- /dev/null +++ b/src/main/java/com/evolve/data/TollPeriodString.java @@ -0,0 +1,49 @@ +package com.evolve.data; + +public class TollPeriodString { + private String start; + private String end; + private int fee; + + public TollPeriodString() { + } + + public TollPeriodString(String start, String end, int fee) { + this.start = start; + this.end = end; + this.fee = fee; + } + + public String getStart() { + return start; + } + + public void setStart(String start) { + this.start = start; + } + + public String getEnd() { + return end; + } + + public void setEnd(String end) { + this.end = end; + } + + public int getFee() { + return fee; + } + + public void setFee(int fee) { + this.fee = fee; + } + + @Override + public String toString() { + return "TollPeriodString{" + + "start='" + start + '\'' + + ", end='" + end + '\'' + + ", fee=" + fee + + '}'; + } +} diff --git a/src/main/java/com/evolve/services/HolidayService.java b/src/main/java/com/evolve/services/HolidayService.java new file mode 100644 index 00000000..cf8ca13b --- /dev/null +++ b/src/main/java/com/evolve/services/HolidayService.java @@ -0,0 +1,26 @@ +package com.evolve.services; + +import java.time.LocalDate; + +public interface HolidayService { + /** + * Check if a date is holiday or not. + * @param date the date + * @return true if the date is a holiday, false otherwise + */ + boolean isHoliday(LocalDate date); + + /** + * Add a date as a holiday + * @param date the date + * @return true if the date was not a holiday, false otherwise + */ + boolean addHoliday(LocalDate date); + + /** + * Remove a date from the holidays. + * @param date the date + * @return true if the date was a holiday, false otherwise + */ + boolean removeHoliday(LocalDate date); +} diff --git a/src/main/java/com/evolve/services/HolidayServiceImpl.java b/src/main/java/com/evolve/services/HolidayServiceImpl.java new file mode 100644 index 00000000..8bde1176 --- /dev/null +++ b/src/main/java/com/evolve/services/HolidayServiceImpl.java @@ -0,0 +1,180 @@ +package com.evolve.services; + +import java.time.DayOfWeek; +import java.time.LocalDate; +import java.util.*; +import java.util.concurrent.ConcurrentHashMap; + +/** + * The holidays are: + * New Year's Day Jan. 1st + * Epiphany Jan. 6th + * Walpurgis Night Apr. 30th + * May 1st May 1st + * National Day Jun. 6th + * Christmas Eve Dec. 24th + * Christmas Day Dec. 25th + * Boxing Day Dec. 26th + * New Year's Eve Dec. 31st + * Good Friday + * Easter's Eve + * Easter Sunday + * Easter Monday + * Ascension Day + * Midsummer's Eve + * Midsummer Day + * All Saints' Eve + * All Saints Day + */ +public class HolidayServiceImpl implements HolidayService { + private static Map holidays; + + @Override + public boolean isHoliday(LocalDate date) { + return holidays.containsKey(date); + } + + @Override + public boolean addHoliday(LocalDate date) { + return holidays.put(date, true) == null ; + } + + @Override + public boolean removeHoliday(LocalDate date) { + return holidays.remove(date) != null; + } + + static { + holidays = new ConcurrentHashMap<>(); + for (int year = 2020; year < 2022; ++year) { + holidays.putAll(getFixedHolidays(year)); + // add Midsummer's Eve and Midsummer's Day + LocalDate d = getMidsummerDay(year); + holidays.put(d.minusDays(1), true); + holidays.put(d, true); + // add All Saints' Eve and All Saints' Day + d = getAllSaintsDay(year); + holidays.put(d.minusDays(1), true); + holidays.put(d, true); + // add Easter-related holidays + LocalDate easterDay = calculateEaster(year); + holidays.put(easterDay.minusDays(2), true); + holidays.put(easterDay.minusDays(1), true); + holidays.put(easterDay, true); + holidays.put(easterDay.plusDays(1), true); + // add Ascension Day + holidays.put(easterDay.plusDays(39), true); + } + } + + /** + * Get the Midsummer's Day of a given year. + * @param year the specified year + * @return the Midsummer's Day + */ + private static LocalDate getMidsummerDay(int year) { + // Earliest possible date of Midsumer's Day is Jun. 20th + return getFirstSaturDay(LocalDate.of(year, 6, 20)); + } + + /** + * Get the All Saints' Day of a given year. + * @param year the specified year + * @return the All Saints' Day + */ + private static LocalDate getAllSaintsDay(int year) { + // Earliest possible date of All Saints' Day is Oct. 31th + return getFirstSaturDay(LocalDate.of(year, 10, 31)); + } + + /** + * Get the first Saturday after a certain date (inclusive). + * + * @param date the specified date + * @return the first Saturday + */ + private static LocalDate getFirstSaturDay(LocalDate date) { + List candidates = new ArrayList<>(7); + for (int i = 0; i < 7; ++i) { + candidates.add(date.plusDays(i)); + } + return candidates.stream().filter(d -> d.getDayOfWeek() == DayOfWeek.SATURDAY).findFirst().get(); + } + + /** + * Calculate the Easter Sunday of the specified year. + * The algorithm used is the Lilius and Clavius algorithm. The naming of the variables follows + * http://www.mathcs.duq.edu/simon/Fall11/easter.html and the comments are mainly from + * http://www.henk-reints.nl/easter/index.htm?frame=easteralg1.htm. + * + * @param year the year + * @return the Easter Sunday of the specified year + */ + private static LocalDate calculateEaster(int year) { + // g: the golden number, a sequence number in the 19-year Metonic cycle + int g = (year % 19) + 1; + // c: the number of the century + int c = (year/100) + 1; + // x: account for the difference between the Gregorian and the Julian calendar (3 leap years less every 4 centuries) + int x = (3*c)/4 - 12; + // z: correction for the inaccuracy of the Metonic cycle, which is about 8 days in 25 (Gregorian) centuries. + int z = (8*c + 5)/25 - 5; + /* + * d: account for the weekday of 21 March. + * Since a year is 1 day longer than 52 weeks, it comes 1 weekday later every year plus a leap day every 4 years, + * resulting in 5 days every 4 years. x is used to correct d for the Gregorian non-leap centuries + */ + int d = (5*year)/4 - x - 10; + /* + * e: epacta, the age of the moon at the start of the year. + * Since a tropical year is 11 days longer than 12 synodic moons (a so called moon year), the full moon + * comes 11 days sooner each year. In the same time the corrections by the z and x components are applied. + * The second (correcting) step in the calculation of e results from the fact that a synodic moon is not + * exactly 30 days but a bit less (29.53059), and the 11 days difference between the just mentioned moon year + * and the tropical year is also not exact (10.89). + */ + int e = (11*g + 20 + z - x) % 30; + if (e == 24 || (e == 25 && g > 11)) + e += 1; + /* + * n: either the first full moon since the vernal equinox on March 21st or the last one before. + * If it is before then a synodic month of 30 days is added. + */ + int n = 44 - e; + if (n < 21) + n += 30; + // n: first Sunday after the full moon + n = n + 7 - ((d+n) % 7); + int month = 3; + if (n > 31) { + // change the date to April + n -= 31; + month = 4; + } + return LocalDate.of(year, month, n); + } + + /** + * Get the set of fixed holidays in a year. + * @param year the year + * @return the set of fixed holidays + */ + private static Map getFixedHolidays(int year) { + Map fixedHolidays = new HashMap<>(); + // New Year's Eve and New Year's Day + fixedHolidays.put(LocalDate.of(year, 1, 1), true); + fixedHolidays.put(LocalDate.of(year, 12, 31), true); + // Epiphany + fixedHolidays.put(LocalDate.of(year, 1, 6), true); + // Walpurgis Night and May 1st + fixedHolidays.put(LocalDate.of(year, 4, 30), true); + fixedHolidays.put(LocalDate.of(year, 5, 1), true); + // National Day + fixedHolidays.put(LocalDate.of(year, 6, 6), true); + // Christmas Eve, Christmas Day and Boxing Day + fixedHolidays.put(LocalDate.of(year, 12, 24), true); + fixedHolidays.put(LocalDate.of(year, 12, 25), true); + fixedHolidays.put(LocalDate.of(year, 12, 26), true); + return fixedHolidays; + } +} diff --git a/src/main/java/com/evolve/services/TollFeeService.java b/src/main/java/com/evolve/services/TollFeeService.java new file mode 100644 index 00000000..6ee177ec --- /dev/null +++ b/src/main/java/com/evolve/services/TollFeeService.java @@ -0,0 +1,27 @@ +package com.evolve.services; + +import com.evolve.data.TollPeriod; + +import java.time.LocalTime; +import java.util.List; + +public interface TollFeeService { + /** + * Get the toll fee for the specified time + * @param time the specified time + * @return the toll fee + */ + int getTollFee(LocalTime time); + + /** + * Add/update the given toll fee periods. + * @param tollPeriods the toll fee periods + */ + void updateTollPeriods(TollPeriod... tollPeriods); + + /** + * Remove the toll fee periods + * @param tollPeriods the toll fee periods. + */ + void removeTollPeriods(TollPeriod... tollPeriods); +} diff --git a/src/main/java/com/evolve/services/TollFeeServiceImpl.java b/src/main/java/com/evolve/services/TollFeeServiceImpl.java new file mode 100644 index 00000000..b4afecbc --- /dev/null +++ b/src/main/java/com/evolve/services/TollFeeServiceImpl.java @@ -0,0 +1,86 @@ +package com.evolve.services; + +import com.evolve.data.TollPeriod; +import com.evolve.data.TollPeriodConfig; +import com.evolve.data.TollPeriodString; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; +import org.yaml.snakeyaml.Yaml; +import org.yaml.snakeyaml.constructor.Constructor; + +import java.io.*; +import java.time.LocalTime; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; + +public class TollFeeServiceImpl implements TollFeeService { + // the toll fees for every minute in a day + private static Map tollFees; + private static final Logger logger = LogManager.getLogger(TollFeeServiceImpl.class); + private static final String CONFIG_FILENAME = "toll_fee.yaml"; + + @Override + public int getTollFee(LocalTime time) { + Integer fee = tollFees.get(LocalTime.of(time.getHour(), time.getMinute())); + // non-exist periods are free + return fee == null ? 0 : fee; + } + + @Override + public void updateTollPeriods(TollPeriod... tollPeriods) { + putTollPeriods(Arrays.asList(tollPeriods)); + } + + @Override + public void removeTollPeriods(TollPeriod... tollPeriods) { + for(TollPeriod tp : tollPeriods) { + LocalTime start = LocalTime.of(tp.getStart().getHour(), tp.getStart().getMinute()); + LocalTime end = LocalTime.of(tp.getEnd().getHour(), tp.getEnd().getMinute(), 1); + while(start.isBefore(end)) { + tollFees.remove(start); + start = start.plusMinutes(1); + } + } + } + + static { + tollFees = new ConcurrentHashMap<>(); + putTollPeriods(readTollPeriodConfig()); + } + + private static void putTollPeriods(List tollPeriods) { + for (TollPeriod tp : tollPeriods) { + int fee = tp.getFee(); + LocalTime start = LocalTime.of(tp.getStart().getHour(), tp.getStart().getMinute()); + LocalTime end = LocalTime.of(tp.getEnd().getHour(), tp.getEnd().getMinute(), 1); + // Put the toll-fee for every minute into the map + while (start.isBefore(end)) { + tollFees.put(start, fee); + start = start.plusMinutes(1); + } + } + } + + private static List readTollPeriodConfig() { + // read config file (YAML format) + Yaml yaml = new Yaml(new Constructor(TollPeriodConfig.class)); + List tollPeriods = new ArrayList<>(); + try (InputStream in = new FileInputStream(new File(TollFeeServiceImpl.CONFIG_FILENAME))) { + TollPeriodConfig tollConfig = yaml.load(in); + for (TollPeriodString tps : tollConfig.getTollPeriods()) { + TollPeriod tollPeriod = new TollPeriod(); + tollPeriod.setStart(LocalTime.parse(tps.getStart())); + tollPeriod.setEnd(LocalTime.parse(tps.getEnd())); + tollPeriod.setFee(tps.getFee()); + tollPeriods.add(tollPeriod); + } + } catch (IOException e) { + logger.error(e); + } + + return tollPeriods; + } +} diff --git a/src/main/java/com/evolve/tollcalculator/TollCalculator.java b/src/main/java/com/evolve/tollcalculator/TollCalculator.java new file mode 100644 index 00000000..af132ba8 --- /dev/null +++ b/src/main/java/com/evolve/tollcalculator/TollCalculator.java @@ -0,0 +1,117 @@ +package com.evolve.tollcalculator; + +import java.time.LocalTime; +import java.time.LocalDate; +import java.time.ZoneId; +import java.time.DayOfWeek; +import java.util.*; + +import java.util.stream.Collectors; + +import com.evolve.services.HolidayService; +import com.evolve.services.TollFeeService; +import com.evolve.vehicles.Vehicle; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; + +public class TollCalculator { + private HolidayService holidayService; + private TollFeeService tollFeeService; + private static final Logger logger = LogManager.getLogger(TollCalculator.class); + public static final int MAX_FEE_IN_ONE_DAY = 60; + + public TollCalculator(HolidayService holidayService, TollFeeService tollFeeService) { + this.holidayService = holidayService; + this.tollFeeService = tollFeeService; + } + + /** + * Calculate the total toll fee for one day + * + * @param vehicle - the vehicle + * @param dates - date and time of all passes on one day + * @return - the total toll fee for that day + */ + public int getTollFee(Vehicle vehicle, Date... dates) { + if (vehicle == null) + throw new IllegalArgumentException("Vehicle can't be null."); + if (dates == null || dates.length == 0) + return 0; + if (Arrays.stream(dates).anyMatch(Objects::isNull)) { + logger.error("The input dates contain null: " + Arrays.toString(dates)); + throw new IllegalArgumentException("The input dates has null entry."); + } + + // check if all dates are of the same day + List temp = Arrays.stream(dates).map(d -> d.toInstant().atZone(ZoneId.systemDefault()).toLocalDate()).collect(Collectors.toList()); + LocalDate entry1 = temp.get(0); + if (temp.stream().anyMatch(d -> !d.equals(entry1))) { + logger.error("The input dates are not of the same date: " + Arrays.toString(dates)); + throw new IllegalArgumentException("All dates shall be on the same date."); + } + if (vehicle.isTollFree() || isTollFreeDate(entry1)) + return 0; + + /* + * Drop the toll-free entries. + * Consider the following case: + * Tim fee comment + * 05:10 0 start of 1st interval if toll-free entries are not dropped + * 06:05 8 start of 1st interval if toll-free entries are dropped + * 06:20 8 start of 2nd interval if toll-free entries are not dropped + * + * If the toll-free entries are not dropped, the total fees are 8 + 8 = 16. + * Otherwise it is 8. + * Thus we should drop toll-free entries so that free is free. + */ + List localTimes = Arrays.stream(dates).map(d -> d.toInstant().atZone(ZoneId.systemDefault()) + .toLocalTime()).filter(d -> getTollFee(d) > 0).collect(Collectors.toList()); + if (localTimes.isEmpty()) + return 0; + + // end of one-hour interval + LocalTime intervalEnd = localTimes.get(0).plusHours(1); + int totalFee = 0; + int maxFee = 0; + for (LocalTime time : localTimes) { + int tollFee = getTollFee(time); + if (time.isAfter(intervalEnd)) { + // passed one-hour period, add highest toll in this hour to total fee. + totalFee += maxFee; + intervalEnd = time.plusHours(1); + maxFee = tollFee; + } else { + if (maxFee < tollFee) + maxFee = tollFee; + } + } + // add the last entry to total. Note: this entry is not counted within the loop. + totalFee += maxFee; + + return (Math.min(totalFee, MAX_FEE_IN_ONE_DAY)); + } + + /** + * Get the toll fee at a specified time. + * + * @param time the specified time + * @return the toll fee should be charged at the specified time + */ + private int getTollFee(LocalTime time) { + // discard the seconds part + LocalTime t = LocalTime.of(time.getHour(), time.getMinute()); + return tollFeeService.getTollFee(t); + } + + /** + * Check if the given date is a toll-free date. + * @param date the specified date + * @return true if it is toll-free, false otherwise + */ + private Boolean isTollFreeDate(LocalDate date) { + DayOfWeek dayOfWeek = date.getDayOfWeek(); + if (dayOfWeek == DayOfWeek.SATURDAY || dayOfWeek == DayOfWeek.SUNDAY) + return true; + return holidayService.isHoliday(date); + } +} diff --git a/src/main/java/com/evolve/vehicles/Car.java b/src/main/java/com/evolve/vehicles/Car.java new file mode 100644 index 00000000..4a37e7a5 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Car.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Car implements Vehicle { + @Override + public Boolean isTollFree() { + return false; + } +} diff --git a/src/main/java/com/evolve/vehicles/Diplomat.java b/src/main/java/com/evolve/vehicles/Diplomat.java new file mode 100644 index 00000000..56ab42c4 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Diplomat.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Diplomat implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Emergency.java b/src/main/java/com/evolve/vehicles/Emergency.java new file mode 100644 index 00000000..7dceb1d9 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Emergency.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Emergency implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Foreign.java b/src/main/java/com/evolve/vehicles/Foreign.java new file mode 100644 index 00000000..a84ce1c5 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Foreign.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Foreign implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Military.java b/src/main/java/com/evolve/vehicles/Military.java new file mode 100644 index 00000000..e5da0ab9 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Military.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Military implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Motorbike.java b/src/main/java/com/evolve/vehicles/Motorbike.java new file mode 100644 index 00000000..293e523f --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Motorbike.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Motorbike implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Tractor.java b/src/main/java/com/evolve/vehicles/Tractor.java new file mode 100644 index 00000000..7e87606a --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Tractor.java @@ -0,0 +1,8 @@ +package com.evolve.vehicles; + +public class Tractor implements Vehicle { + @Override + public Boolean isTollFree() { + return true; + } +} diff --git a/src/main/java/com/evolve/vehicles/Vehicle.java b/src/main/java/com/evolve/vehicles/Vehicle.java new file mode 100644 index 00000000..07d50090 --- /dev/null +++ b/src/main/java/com/evolve/vehicles/Vehicle.java @@ -0,0 +1,5 @@ +package com.evolve.vehicles; + +public interface Vehicle { + public Boolean isTollFree(); +} diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml new file mode 100644 index 00000000..79ccf674 --- /dev/null +++ b/src/main/resources/log4j2.xml @@ -0,0 +1,13 @@ + + + + + + + + + + + + + diff --git a/src/test/java/com/evolve/tollcalculator/HolidayServiceImplTest.java b/src/test/java/com/evolve/tollcalculator/HolidayServiceImplTest.java new file mode 100644 index 00000000..e9d0702f --- /dev/null +++ b/src/test/java/com/evolve/tollcalculator/HolidayServiceImplTest.java @@ -0,0 +1,54 @@ +package com.evolve.tollcalculator; + +import com.evolve.services.HolidayService; +import com.evolve.services.HolidayServiceImpl; +import org.junit.Test; +import org.junit.Assert; + +import java.time.LocalDate; + +public class HolidayServiceImplTest { + private final HolidayService holidayService; + private static final int YEAR = 2021; + + public HolidayServiceImplTest() { + holidayService = new HolidayServiceImpl(); + } + + @Test + public void testFixedHolidays() { + Assert.assertTrue("New Year's Day", holidayService.isHoliday(LocalDate.of(YEAR, 1, 1))); + Assert.assertTrue("New Year's Eve", holidayService.isHoliday(LocalDate.of(YEAR, 12, 31))); + Assert.assertTrue("Epiphany", holidayService.isHoliday(LocalDate.of(YEAR, 1, 6))); + Assert.assertTrue("Walpurgis Night", holidayService.isHoliday(LocalDate.of(YEAR, 4, 30))); + Assert.assertTrue("May 1st", holidayService.isHoliday(LocalDate.of(YEAR, 5, 1))); + Assert.assertTrue("National Day", holidayService.isHoliday(LocalDate.of(YEAR, 6, 6))); + Assert.assertTrue("Christmas's Eve", holidayService.isHoliday(LocalDate.of(YEAR, 12, 24))); + Assert.assertTrue("Christmas Day", holidayService.isHoliday(LocalDate.of(YEAR, 12, 25))); + Assert.assertTrue("Boxing Day", holidayService.isHoliday(LocalDate.of(YEAR, 12, 26))); + } + + @Test + public void testMidsummer() { + LocalDate midsummer = LocalDate.of(YEAR, 6, 26); + Assert.assertTrue("Midsummer's Day", holidayService.isHoliday(midsummer)); + Assert.assertTrue("Midsummer's Eve", holidayService.isHoliday(midsummer.minusDays(1))); + } + + @Test + public void testAllSaints() { + LocalDate allSaints = LocalDate.of(YEAR, 11, 6); + Assert.assertTrue("All Saints' Day", holidayService.isHoliday(allSaints)); + Assert.assertTrue("All Saints' Eve", holidayService.isHoliday(allSaints.minusDays(1))); + } + + @Test + public void testEaster() { + LocalDate easterSunday = LocalDate.of(YEAR, 4, 4); + Assert.assertTrue("Easter Sunday", holidayService.isHoliday(easterSunday)); + Assert.assertTrue("Easter's Eve", holidayService.isHoliday(easterSunday.minusDays(1))); + Assert.assertTrue("Good Friday", holidayService.isHoliday(easterSunday.minusDays(2))); + Assert.assertTrue("Easter Monday", holidayService.isHoliday(easterSunday.plusDays(1))); + Assert.assertTrue("Ascension Day", holidayService.isHoliday(easterSunday.plusDays(39))); + } +} diff --git a/src/test/java/com/evolve/tollcalculator/TollCalculatorTest.java b/src/test/java/com/evolve/tollcalculator/TollCalculatorTest.java new file mode 100644 index 00000000..99307395 --- /dev/null +++ b/src/test/java/com/evolve/tollcalculator/TollCalculatorTest.java @@ -0,0 +1,100 @@ +package com.evolve.tollcalculator; + +import com.evolve.services.HolidayServiceImpl; +import com.evolve.services.TollFeeServiceImpl; +import com.evolve.vehicles.Motorbike; +import com.evolve.vehicles.Vehicle; +import org.junit.Test; +import org.junit.Assert; +import com.evolve.vehicles.Car; + +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.LocalTime; +import java.time.ZoneId; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; + +public class TollCalculatorTest { + private final TollCalculator tollCalculator; + + public TollCalculatorTest() { + tollCalculator = new TollCalculator(new HolidayServiceImpl(), new TollFeeServiceImpl()); + } + + @Test + public void testTollFreeVehicle() { + // toll-free vehicle + Vehicle vehicle = new Motorbike(); + // non-weekend, not a holiday + LocalDate date = LocalDate.of(2021, 2, 1); + LocalDateTime time = LocalDateTime.of(date, LocalTime.of(8, 0)); + int fee = tollCalculator.getTollFee(vehicle, Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + Assert.assertEquals(0, fee); + } + + @Test + public void testWeekend() { + // normal vehicle + Vehicle vehicle = new Car(); + // Saturday + LocalDate date = LocalDate.of(2021, 2, 6); + LocalDateTime time = LocalDateTime.of(date, LocalTime.of(8, 0)); + int fee = tollCalculator.getTollFee(vehicle, Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + Assert.assertEquals(time.toString(), 0, fee); + // Sunday + date = date.plusDays(1); + time = LocalDateTime.of(date, LocalTime.of(8, 0)); + fee = tollCalculator.getTollFee(vehicle, Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + Assert.assertEquals(time.toString(), 0, fee); + } + + @Test + public void testTollFreePeriod() { + Vehicle vehicle = new Car(); + List dates = new ArrayList<>(); + // non-weekend, not a holiday + LocalDate date = LocalDate.of(2021, 2, 1); + LocalDateTime time = LocalDateTime.of(date, LocalTime.of(5, 30)); // 05:30 fee: 0 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(30); // 06:00 fee: 8 (not counted) + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 06:40 fee: 13 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + Date[] datesArray = new Date[dates.size()]; + int fee = tollCalculator.getTollFee(vehicle, dates.toArray(datesArray)); + // The toll-free shall be dropped. Thus the total fee should be 13. + Assert.assertEquals(13, fee); + } + + @Test + public void testTollFeeCalculation() { + Vehicle vehicle = new Car(); + List dates = new ArrayList<>(); + // non-weekend, not a holiday + LocalDate date = LocalDate.of(2021, 2, 1); + LocalDateTime time = LocalDateTime.of(date, LocalTime.of(6, 0)); // 06:00 fee: 8 (not counted) + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 06:40 fee: 13 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 07:20 fee: 18 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 08:00 fee: 13 (not counted) + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 08:40 fee: 8 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusHours(6); // 14:40 fee: 8 (not counted) + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + time = time.plusMinutes(40); // 15:20 fee: 13 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + Date[] datesArray = new Date[dates.size()]; + int fee = tollCalculator.getTollFee(vehicle, dates.toArray(datesArray)); + // 13 + 18 + 8 + 13 = 52 + Assert.assertEquals("Till " + time.toString(), 52, fee); + time = time.plusMinutes(40); // 16:00 fee: 18 + dates.add(Date.from(time.atZone(ZoneId.systemDefault()).toInstant())); + fee = tollCalculator.getTollFee(vehicle, dates.toArray(datesArray)); + Assert.assertEquals("Reaches maximum for one day.", TollCalculator.MAX_FEE_IN_ONE_DAY, fee); + } +} diff --git a/src/test/java/com/evolve/tollcalculator/TollFeeServiceImplTest.java b/src/test/java/com/evolve/tollcalculator/TollFeeServiceImplTest.java new file mode 100644 index 00000000..ca3949bc --- /dev/null +++ b/src/test/java/com/evolve/tollcalculator/TollFeeServiceImplTest.java @@ -0,0 +1,67 @@ +package com.evolve.tollcalculator; + +import com.evolve.data.TollPeriod; +import com.evolve.services.TollFeeService; +import com.evolve.services.TollFeeServiceImpl; +import org.junit.Assert; +import org.junit.FixMethodOrder; +import org.junit.Test; + +import java.time.LocalTime; + +@FixMethodOrder() +public class TollFeeServiceImplTest { + private final TollFeeService tollFeeService; + + public TollFeeServiceImplTest() { + tollFeeService = new TollFeeServiceImpl(); + } + + @Test + public void testTollFeePeriod() { + LocalTime time = LocalTime.of(5, 30); // 05:30 + Assert.assertEquals(time.toString(), 0, tollFeeService.getTollFee(time)); + time = time.plusMinutes(30); // 06:00 + Assert.assertEquals(time.toString(), 8, tollFeeService.getTollFee(time)); + time = time.plusMinutes(30); // 06:30 + Assert.assertEquals(time.toString(), 13, tollFeeService.getTollFee(time)); + time = time.plusMinutes(30); // 07:00 + Assert.assertEquals(time.toString(), 18, tollFeeService.getTollFee(time)); + time = time.plusMinutes(60); // 08:00 + Assert.assertEquals(time.toString(), 13, tollFeeService.getTollFee(time)); + time = time.plusMinutes(30); // 08:30 + Assert.assertEquals(time.toString(), 8, tollFeeService.getTollFee(time)); + time = time.plusMinutes(60*6+30); // 15:00 + Assert.assertEquals(time.toString(), 13, tollFeeService.getTollFee(time)); + time = time.plusMinutes(30); // 15:30 + Assert.assertEquals(time.toString(), 18, tollFeeService.getTollFee(time)); + time = time.plusMinutes(90); // 17:00 + Assert.assertEquals(time.toString(), 13, tollFeeService.getTollFee(time)); + time = time.plusMinutes(60); // 18:00 + Assert.assertEquals(time.toString(), 8, tollFeeService.getTollFee(time)); + time = time.plusMinutes(60); // 19:00 + Assert.assertEquals(time.toString(), 0, tollFeeService.getTollFee(time)); + } + + @Test + public void testModifyTollPeriod() { + final int TOLL_FEE = 11; + LocalTime start = LocalTime.of(6, 15); + LocalTime end = LocalTime.of(6, 29); + TollPeriod period = new TollPeriod(start, end, TOLL_FEE); + tollFeeService.updateTollPeriods(period); + Assert.assertEquals(start.toString(), TOLL_FEE, tollFeeService.getTollFee(start)); + Assert.assertEquals(end.toString(), TOLL_FEE, tollFeeService.getTollFee(end)); + } + + @Test + public void testRemoveTollPeriod() { + LocalTime start = LocalTime.of(6, 15); + LocalTime end = LocalTime.of(6, 29); + TollPeriod period = new TollPeriod(start, end, 11); + tollFeeService.removeTollPeriods(period); + // non-exist periods are toll-free + Assert.assertEquals(start.toString(), 0, tollFeeService.getTollFee(start)); + Assert.assertEquals(end.toString(), 0, tollFeeService.getTollFee(end)); + } +} diff --git a/toll_fee.yaml b/toll_fee.yaml new file mode 100644 index 00000000..98ed6a9d --- /dev/null +++ b/toll_fee.yaml @@ -0,0 +1,28 @@ +tollPeriods: + - start: 06:00:00 + end: 06:29:59 + fee: 8 + - start: 06:30:00 + end: 06:59:59 + fee: 13 + - start: 07:00:00 + end: 07:59:59 + fee: 18 + - start: 08:00:00 + end: 08:29:59 + fee: 13 + - start: 08:30:00 + end: 14:59:59 + fee: 8 + - start: 15:00:00 + end: 15:29:59 + fee: 13 + - start: 15:30:00 + end: 16:59:59 + fee: 18 + - start: 17:00:00 + end: 17:59:59 + fee: 13 + - start: 18:00:00 + end: 18:29:59 + fee: 8