package gg.malloc.defense.engine;

import org.bukkit.entity.Player;
import org.bukkit.Bukkit;
import org.bukkit.GameMode;
import org.bukkit.attribute.Attribute;
import org.bukkit.event.player.PlayerTeleportEvent;
import org.bukkit.scoreboard.ScoreboardManager;

import gg.malloc.defense.ui.Sidebar;
import gg.malloc.defense.model.Progress;

import java.util.HashMap;
import java.util.Collection;

public class PlayerManager {
  HashMap<Player, State> m_playerStates = new HashMap<>();
  HashMap<Player, Boolean> m_playerReadyStates = new HashMap<>();
  HashMap<Player, Integer> m_playerExpenses = new HashMap<>();
  HashMap<Player, Integer> m_respawnCounters = new HashMap<>();

  public enum State {
    Idle,
    Playing,
    Dead
  }

  public boolean requestTransitionForAll(State toState) {
    boolean allSuccess = true;
    for (Player p : getPlayers()) {
      allSuccess = allSuccess && requestTransition(p, toState);
    }
    return allSuccess;
  }

  public boolean contains(Player player) {
    return m_playerStates.containsKey(player);
  }

  public boolean requestTransition(Player player, State toState) {
    State currentState = m_playerStates.get(player);
    if (currentState == toState) {
      return false;
    }
    boolean ret = false;
    switch(toState) {
      case Idle:
        ret = enterIdle(player);break;
      case Playing:
        ret = enterPlaying(player);break;
      case Dead:
        ret = enterDead(player);break;
    }
    if (ret) {
      m_playerStates.put(player, toState);
    }
    return ret;
  }

  public boolean enterIdle(Player player) {
    // Reset player to non-game state, return control back to Minecraft
    player.setGameMode(Bukkit.getDefaultGameMode());
    return true;
  }

  public void healPlayer(Player player) {
    player.setHealth(player.getAttribute(Attribute.GENERIC_MAX_HEALTH).getValue());
    player.setFoodLevel(40);
  }

  // Respawn player
  public boolean enterPlaying(Player player) {
    player.setGameMode(Bukkit.getDefaultGameMode());
    healPlayer(player);
    return true;
  }

  public boolean enterDead(Player player) {
    player.setGameMode(GameMode.SPECTATOR);
    m_respawnCounters.put(player, 15);
    return true;
  }

  public void addPlayer(Player player) {
    m_playerStates.put(player, State.Idle);
    m_playerReadyStates.put(player, false);
    m_playerExpenses.put(player, 0);
    m_respawnCounters.put(player, 0);
  }

  public boolean isReady(Player player) {
    return m_playerReadyStates.get(player);
  }

  public void setReady(Player player, boolean ready) {
    m_playerReadyStates.put(player, ready);
  }

  public Progress readyProgress() {
    int readyNum = 0;
    for(boolean b : m_playerReadyStates.values()) {
      if (b) {
        readyNum += 1;
      }
    }
    return new StaticProgress(readyNum, m_playerReadyStates.size());
  }

  public boolean isEveryoneReady() {
    for(boolean b : m_playerReadyStates.values()) {
      if (!b) {
        return false;
      }
    }
    return true;
  
  }

  public Progress getRespawnProgress(Player player) {
    return new StaticProgress(m_respawnCounters.get(player), 15);
  }

  public int getRespawnCounter(Player player) {
    if (m_respawnCounters.containsKey(player)) {
      return m_respawnCounters.get(player);
    } else {
      return 0;
    }
  }

  public void tickRespawnCounters() {
    for(Player p : m_respawnCounters.keySet()) {
      if (m_respawnCounters.get(p) > 0) {
        m_respawnCounters.put(p, m_respawnCounters.get(p) - 1);
      }
    }
  }

  public boolean readyToRespawn(Player player) {
    return m_respawnCounters.get(player) == 0 && m_playerStates.get(player) == State.Dead;
  }

  public void addPlayerExpenses(Player player, int amount) {
    if (m_playerExpenses.containsKey(player)) {
      m_playerExpenses.put(player, m_playerExpenses.get(player) + amount);
    }
  }

  public int getPlayerExpenses(Player player) {
    if (m_playerExpenses.containsKey(player)) {
      return m_playerExpenses.get(player);
    }
    return 0;
  }

  public boolean removePlayer(Player player) {
    healPlayer(player);
    requestTransition(player, State.Idle);
    m_playerStates.remove(player);
    m_playerReadyStates.remove(player);
    m_playerExpenses.remove(player);
    m_respawnCounters.remove(player);
    return true;
  }

  public boolean isEmpty() {
    return m_playerStates.size() == 0;
  }

  public boolean isAlive(Player player) {
    return m_playerStates.get(player) == State.Playing;
  }

  public boolean isAnyoneAlive() {
    for(Player p : m_playerStates.keySet()) {
      if (m_playerStates.get(p) == State.Playing) {
        return true;
      }
    }
    return false;
  }

  public int remainingPlayers() {
    int aliveCount = 0;
    for(State s : m_playerStates.values()) {
      if (s == State.Playing) {
        aliveCount += 1;
      }
    }
    return aliveCount;
  }

  Collection<Player> getPlayers() {
    return m_playerStates.keySet();
  }
}