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‎src/main/java/com/example/Main.java‎

Lines changed: 155 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,162 @@
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package com.example;
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3-
import com.example.api.ElpriserAPI;
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import java.time.LocalDate;
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import java.time.format.DateTimeFormatter;
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import java.time.format.DateTimeParseException;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.List;
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public class Main {
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public static void main(String[] args) {
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// hjälp
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if (args.length > 0 && args[0].equals("--help")) {
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skrivUtHjalp();
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return;
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}
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String zone = "SE3";
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LocalDate date = LocalDate.now();
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LocalDate startDate = date.plusDays(1);
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boolean sorted = false;
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int chargingHours = 0;
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for (int i = 0; i < args.length; i++) {
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switch (args[i]) {
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case "--date":
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if (i + 1 < args.length) {
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String dateArg = args[i + 1].toLowerCase();
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if (dateArg.equals("imorgon")) {
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startDate = LocalDate.now();
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} else if (dateArg.equals("idag")) {
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startDate = LocalDate.now();
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} else {
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try {
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startDate = LocalDate.parse(dateArg);
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} catch (DateTimeParseException e) {
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System.out.println("Fel: Ogiltigt datumformat. Använd YYYY-MM-DD.");
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return;
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}
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}
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i++;
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}
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break;
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case "--sorted":
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sorted = true;
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break;
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case "--charging":
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if (i + 1 < args.length) {
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String val = args[i + 1].replace("h", "");
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try {
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chargingHours = Integer.parseInt(val);
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} catch (NumberFormatException e) {
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System.out.println("error: use 2h, 4h or 8h.");
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return;
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}
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i++;
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}
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break;
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}
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}
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// API o prisklass
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ElpriserAPI elpriserAPI = new ElpriserAPI();
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ElpriserAPI.Prisklass prisklass;
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try {
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prisklass = ElpriserAPI.Prisklass.valueOf(zone);
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} catch (IllegalArgumentException e) {
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System.out.println("Felaktig zon: " + zone);
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prisklass = ElpriserAPI.Prisklass.SE3;
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}
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// priser
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List<ElpriserAPI.Elpris> priser = new ArrayList<>(elpriserAPI.getPriser(date, prisklass));
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if (priser.isEmpty()) {
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System.out.println("inga priser tillgangliga for " + date + " in zon " + zone + ".");
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return;
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}
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List<ElpriserAPI.Elpris> imorgonPriser = elpriserAPI.getPriser(startDate, prisklass);
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if (imorgonPriser != null && !imorgonPriser.isEmpty()) {
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priser.addAll(imorgonPriser);
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}
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if (sorted) {
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priser.sort(Comparator.comparingDouble(ElpriserAPI.Elpris::sekPerKWh).reversed());
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}
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// stats
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DateTimeFormatter tidFormat = DateTimeFormatter.ofPattern("HH:mm");
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ElpriserAPI.Elpris billigast = priser.getFirst();
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ElpriserAPI.Elpris dyrast = priser.getFirst();
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double summa = 0;
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// skriv ut timpriser
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for (ElpriserAPI.Elpris pris : priser) {
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System.out.printf("%s: %.4f SEK/kWh%n",
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pris.timeStart().format(tidFormat), pris.sekPerKWh());
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}
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for (ElpriserAPI.Elpris pris : priser) {
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summa += pris.sekPerKWh();
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if (pris.sekPerKWh() < billigast.sekPerKWh()) billigast = pris;
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if (pris.sekPerKWh() > dyrast.sekPerKWh()) dyrast = pris;
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}
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double medelpris = summa / priser.size();
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System.out.println("Statistik");
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System.out.println("Datum: " + date);
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System.out.println("Zon: " + zone);
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System.out.printf("Medelpris: %.4f SEK/kWh%n", medelpris);
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System.out.printf("Billigast pris: %s - %.4f SEK/kWh%n",
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billigast.timeStart().format(tidFormat), billigast.sekPerKWh());
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System.out.printf("Dyrast pris: %s - %.4f SEK/kWh%n",
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dyrast.timeStart().format(tidFormat), dyrast.sekPerKWh());
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// opt laddning
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if (chargingHours > 0) {
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beraknaLaddningsfonster(priser, chargingHours, tidFormat);
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} else {
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// 2h, 4h, 8h
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for (int period : new int[]{2, 4, 8}) {
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beraknaLaddningsfonster(priser, period, tidFormat);
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}
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}
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}
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// metod för laddningsfönster ??????????
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public static void beraknaLaddningsfonster(List<ElpriserAPI.Elpris> priser, int timmar, DateTimeFormatter format) {
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if (priser.size() < timmar) return;
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double minSum = Double.MAX_VALUE;
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int minIndex = 0;
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for (int i = 0; i <= priser.size() - timmar; i++) {
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double windowSum = 0;
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for (int j = i; j < i + timmar; j++) {
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windowSum += priser.get(j).sekPerKWh();
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}
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if (windowSum < minSum) {
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minSum = windowSum;
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minIndex = i;
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}
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}
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String startTid = priser.get(minIndex).timeStart().format(format);
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String slutTid = priser.get(minIndex + timmar - 1).timeStart().plusHours(1).format(format);
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System.out.printf("Billigast pris %dh-period: %s - %s (%.4f SEK totalt)%n",
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timmar, startTid, slutTid, minSum);
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}
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// hjälptext
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public static void skrivUtHjalp() {
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System.out.println("Usage: java -cp target/classes com.example.Main --zone <zon> [options]");
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System.out.println("--zone SE1|SE2|SE3|SE4");
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System.out.println("--date YYYY-MM-DD|imorgon");
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System.out.println("--sorted");
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System.out.println("--charging 2h|4h|8h");
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System.out.println("--help");
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}
9-
}
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}

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