package org.example;

import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import org.example.models.Club;
import org.example.models.TeamStanding;
import org.jsoup.Connection;
import org.jsoup.Jsoup;

import java.io.FileInputStream;
import java.util.*;

public class StandingsScraper {
    public static void main(String[] args) {

        String caminhoChave = "service-account.json";
        String urlDatabase = "https://vdcscore-default-rtdb.firebaseio.com/";

        try {
            System.out.println("--- A CONECTAR AO FIREBASE ---");
            if (FirebaseApp.getApps().isEmpty()) {
                FileInputStream serviceAccount = new FileInputStream(caminhoChave);
                FirebaseOptions options = FirebaseOptions.builder()
                        .setCredentials(GoogleCredentials.fromStream(serviceAccount))
                        .setDatabaseUrl(urlDatabase)
                        .build();
                FirebaseApp.initializeApp(options);
            }
        } catch (Exception e) {
            System.err.println("ERRO FIREBASE: Verifica o service-account.json!");
            e.printStackTrace();
            return;
        }

        Gson gson = new Gson();
        Map<Integer, Club> clubesMap = new HashMap<>();

        // 1. Obter todos os Clubes e seus meta-dados
        System.out.println("\n--- A EXTRAIR DADOS DOS CLUBES ---");
        try {
            String urlTodosClubes = "https://api.afavcd.pt/teams";
            String jsonTodosClubes = Jsoup.connect(urlTodosClubes)
                    .ignoreContentType(true)
                    .userAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64)")
                    .header("Referer", "https://www.afavcd.pt/")
                    .header("Origin", "https://www.afavcd.pt")
                    .method(Connection.Method.GET)
                    .execute()
                    .body();

            List<Map<String, Object>> dadosClubes = gson.fromJson(jsonTodosClubes,
                    new TypeToken<List<Map<String, Object>>>() {
                    }.getType());

            for (Map<String, Object> c : dadosClubes) {
                if (c.get("teamID") != null) {
                    int clubId = (int) Double.parseDouble(c.get("teamID").toString());
                    Club club = new Club();
                    club.setId(clubId);
                    if (c.get("name") != null)
                        club.setName(c.get("name").toString());
                    if (c.get("logoURL") != null)
                        club.setImageUrl(c.get("logoURL").toString());

                    clubesMap.put(clubId, club);
                }
            }
            System.out.println("Encontrados " + clubesMap.size() + " clubes.");
        } catch (Exception e) {
            System.err.println("Erro ao obter lista de clubes.");
            e.printStackTrace();
            return;
        }

        int[] modalidades = { 3, 1 };
        String[] nomesEscaloes = { "juniores", "seniores" };

        for (int i = 0; i < modalidades.length; i++) {
            int modalidade = modalidades[i];
            String escalao = nomesEscaloes[i];

            System.out.println("\n========================================");
            System.out.println("A CALCULAR CLASSIFICAÇÃO PARA: " + escalao.toUpperCase());
            System.out.println("========================================");

            String urlJornadas = "https://api.afavcd.pt/seasons/33/teams/modality/" + modalidade + "/jorneys";
            try {
                String jsonJornadas = Jsoup.connect(urlJornadas)
                        .ignoreContentType(true)
                        .userAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64)")
                        .header("Referer", "https://www.afavcd.pt/")
                        .header("Origin", "https://www.afavcd.pt")
                        .method(Connection.Method.GET)
                        .execute()
                        .body();

                Map<String, List<Map<String, Object>>> matchdays = gson.fromJson(jsonJornadas,
                        new TypeToken<Map<String, List<Map<String, Object>>>>() {
                        }.getType());

                Map<Integer, TeamStanding> standingsMap = new HashMap<>();

                for (List<Map<String, Object>> matchday : matchdays.values()) {
                    for (Map<String, Object> match : matchday) {
                        try {
                            int homeTeamId = parseId(match.get("Home"));
                            int awayTeamId = parseId(match.get("Away"));

                            // Ignorar jogos com equipas placeholder / de descanso
                            if (homeTeamId < 0 || awayTeamId < 0)
                                continue;

                            String homeGoalsStr = String.valueOf(match.get("homeGoals"));
                            String awayGoalsStr = String.valueOf(match.get("awayGoals"));

                            if (homeGoalsStr != null && !homeGoalsStr.trim().isEmpty()
                                    && !homeGoalsStr.equals("null")) {
                                int homeGoals = (int) Double.parseDouble(homeGoalsStr);
                                int awayGoals = (int) Double.parseDouble(awayGoalsStr);

                                // Inicializar as equipas caso não existam no standingsMap
                                standingsMap.putIfAbsent(homeTeamId, createInitialStanding(homeTeamId, clubesMap));
                                standingsMap.putIfAbsent(awayTeamId, createInitialStanding(awayTeamId, clubesMap));

                                standingsMap.get(homeTeamId).addMatchResult(homeGoals, awayGoals);
                                standingsMap.get(awayTeamId).addMatchResult(awayGoals, homeGoals);
                            }
                        } catch (Exception ex) {
                            // Ignorar erro em um jogo específico (dados incorretos, etc)
                        }
                    }
                }

                // Transformar em lista e ordenar
                List<TeamStanding> sortedStandings = new ArrayList<>(standingsMap.values());
                Collections.sort(sortedStandings);

                System.out.println("Classificação Final " + escalao.toUpperCase() + ":");
                int posicao = 1;
                for (TeamStanding ts : sortedStandings) {
                    ts.setPosition(posicao);
                    System.out.printf("%d. %s - %d pts (J:%d, V:%d, E:%d, D:%d, GM:%d, GS:%d)\n",
                            posicao, ts.getName(), ts.getPoints(), ts.getMatchesPlayed(), ts.getWins(), ts.getDraws(),
                            ts.getLosses(), ts.getGoalsFor(), ts.getGoalsAgainst());
                    posicao++;
                }

                // Enviar para Firebase
                DatabaseReference refClassificacoes = FirebaseDatabase.getInstance()
                        .getReference("classificacoes").child(escalao);

                refClassificacoes.setValueAsync(sortedStandings);
                System.out.println("-> Classificação de " + escalao + " enviada para o Firebase.");

            } catch (Exception e) {
                System.err.println("Erro a processar " + escalao);
                e.printStackTrace();
            }
        }

        try {
            System.out.println("\nAguardando confirmação do servidor (5s)...");
            Thread.sleep(5000);
            System.out.println("Processo concluído!");
            System.exit(0);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    private static int parseId(Object value) {
        if (value == null)
            return -1;
        try {
            return (int) Double.parseDouble(value.toString());
        } catch (NumberFormatException e) {
            return -1;
        }
    }

    private static TeamStanding createInitialStanding(int teamId, Map<Integer, Club> clubesMap) {
        Club club = clubesMap.get(teamId);
        if (club != null) {
            return new TeamStanding(teamId, club.getName(), club.getImageUrl());
        }
        return new TeamStanding(teamId, "Equipa " + teamId, "");
    }
}