package project.utils;

import project.Besuch;
import project.Main;
import project.Ort;
import project.Person;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Objects;

public class Parser {
    private static db_new_entity new_entity = null;

    public static void parse(String filename) {
        try (BufferedReader bf = new BufferedReader(new InputStreamReader(Objects.requireNonNull(Main.class.getResourceAsStream(filename))))) {
            String line;
            while ((line = bf.readLine()) != null) {
                if (line.toLowerCase().contains("new_entity")) {
                    if (line.toLowerCase().contains("start_date")) new_entity = db_new_entity.BESUCH;
                    else if (line.toLowerCase().contains("location_id")) new_entity = db_new_entity.ORT;
                    else if (line.toLowerCase().contains("person_id")) new_entity = db_new_entity.PERSON;

                    continue;
                }

                if (new_entity == db_new_entity.BESUCH) {
                    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
                    LocalDateTime start = LocalDateTime.parse(line.split(",")[0].replaceAll("\"", ""), formatter);
                    LocalDateTime end = LocalDateTime.parse(line.split(",")[1].replaceAll("\"", ""), formatter);
                    Person p = Main.persons.get(Integer.parseInt(line.split(",")[2].replaceAll("\"", "")));
                    Ort o = Main.orte.get(Integer.parseInt(line.split(",")[3].replaceAll("\"", "")));
                    Main.besuche.add(new Besuch(start, end, p, o));
                } else if (new_entity == db_new_entity.ORT) {
                    int id = Integer.parseInt(line.split(",")[0].replaceAll("\"", ""));
                    String name = line.split(",")[1].replaceAll("\"", "");
                    boolean indoor = line.split(",")[2].replaceAll("\"", "").equals("in_door");
                    Main.orte.put(id, new Ort(id, name, indoor));
                } else if (new_entity == db_new_entity.PERSON) {
                    int id = Integer.parseInt(line.split(",")[0].replaceAll("\"", ""));
                    String name = line.split(",")[1].replaceAll("\"", "");
                    Main.persons.put(id, new Person(id, name));
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}