import json
from dusk.event import Event
from PyQt5.QtWidgets import QFileDialog, QMessageBox
from PyQt5.QtCore import QTimer
import os
from editortool.map.chunk import Chunk
from editortool.map.mapdefs import MAP_WIDTH, MAP_HEIGHT, MAP_DEPTH
import traceback

MAP_DEFAULT_PATH = os.path.join(os.path.dirname(__file__), '../../../assets/map/')
EDITOR_CONFIG_PATH = os.path.join(os.path.dirname(__file__), '.editor')

class Map:
  def __init__(self, parent):
    self.parent = parent
    self.data = {}
    self.dataOriginal = {}
    self.position = [0, 0, 0]  # x, y, z
    self.chunks = {}
    self.onMapData = Event()
    self.onPositionChange = Event()
    self.mapFileName = None
    self.lastFile = None

    index = 0
    for x in range(MAP_WIDTH):
      for y in range(MAP_HEIGHT):
        for z in range(MAP_DEPTH):
          self.chunks[index] = Chunk(self, x, y, z)
          index += 1
    QTimer.singleShot(16, self.loadLastFile)

  def loadLastFile(self):
    if not os.path.exists(EDITOR_CONFIG_PATH):
      return
    try:
      with open(EDITOR_CONFIG_PATH, 'r') as f:
        config = json.load(f)
      lastFile = config.get('lastFile')
      lastPosition = config.get('lastPosition')
      if lastFile and os.path.exists(lastFile):
        self.load(lastFile)
      if lastPosition and isinstance(lastPosition, list) and len(lastPosition) == 3:
        self.moveTo(*lastPosition)
    except Exception:
      traceback.print_exc()

  def updateEditorConfig(self):
    print("Updating editor config...")
    try:
      mapFileName = self.getMapFilename()
      config = {
        'lastFile': mapFileName if mapFileName else "",
        'lastPosition': self.position
      }
      config_dir = os.path.dirname(EDITOR_CONFIG_PATH)
      if not os.path.exists(config_dir):
        os.makedirs(config_dir, exist_ok=True)
      with open(EDITOR_CONFIG_PATH, 'w') as f:
        json.dump(config, f, indent=2)
    except Exception:
      traceback.print_exc()

  def newFile(self):
    self.data = {}
    self.dataOriginal = {}
    self.mapFileName = None
    self.lastFile = None
    for chunk in self.chunks.values():
      chunk.new()
    self.moveTo(0, 0, 0)
    self.onMapData.invoke(self.data)
    self.updateEditorConfig()
  
  def save(self, fname=None):
    if not self.getMapFilename() and fname is None:
      filePath, _ = QFileDialog.getSaveFileName(None, "Save Map File", MAP_DEFAULT_PATH, "Map Files (*.json)")
      if not filePath:
        return
      self.mapFileName = filePath
    if fname:
      self.mapFileName = fname
    try:
      with open(self.getMapFilename(), 'w') as f:
        json.dump(self.data, f, indent=2)
      self.dataOriginal = json.loads(json.dumps(self.data))  # Deep copy
      for chunk in self.chunks.values():
        chunk.save()
      self.updateEditorConfig()
    except Exception as e:
      traceback.print_exc()
      QMessageBox.critical(None, "Save Error", f"Failed to save map file:\n{e}")

  def load(self, fileName):
    try:
      with open(fileName, 'r') as f:
        self.data = json.load(f)
      self.mapFileName = fileName
      self.dataOriginal = json.loads(json.dumps(self.data))  # Deep copy
      for chunk in self.chunks.values():
        chunk.load()
      self.onMapData.invoke(self.data)
      self.updateEditorConfig()
    except Exception as e:
      traceback.print_exc()
      QMessageBox.critical(None, "Load Error", f"Failed to load map file:\n{e}")

  def isMapFileDirty(self):
    return json.dumps(self.data, sort_keys=True) != json.dumps(self.dataOriginal, sort_keys=True)

  def isDirty(self):
    return self.isMapFileDirty() or self.anyChunksDirty()

  def getMapFilename(self):
    return self.mapFileName if self.mapFileName and os.path.exists(self.mapFileName) else None

  def getMapDirectory(self):
    fname = self.getMapFilename()
    if not fname or not fname.endswith('.json'):
      return None
    return fname[:-5]  # Remove '.json' extension

  def anyChunksDirty(self):
    for chunk in self.chunks.values():
      if chunk.isDirty():
        return True
    return False

  def moveTo(self, x, y, z):
    self.position = [x, y, z]
    self.onPositionChange.invoke(self.position)
    self.updateEditorConfig()

  def moveRelative(self, x, y, z):
    self.moveTo(
      self.position[0] + x,
      self.position[1] + y,
      self.position[2] + z
    )