import json

from typing import Dict, List, Any



class GameState:

    def __init__(self):

        self.map_tiles = []

        self.resources = {}

        self.entities = []

        self.camera = {'x': 0, 'y': 0, 'zoom': 1.0}

        self.player_data = {}



class StateLoader:

    def __init__(self):

        pass



    def load_level(self, path: str) -> GameState:

        try:

            with open(path, 'r') as file:

                data = json.load(file)

        except FileNotFoundError:

            raise FileNotFoundError(f"Level file not found: {path}")

        except json.JSONDecodeError:

            raise ValueError(f"Invalid JSON in level file: {path}")

        

        game_state = GameState()

        game_state.map_tiles = self.parse_map(data.get('map', {}))

        game_state.resources = data.get('resources', {})

        game_state.entities = data.get('entities', [])

        game_state.player_data = data.get('player', {})

        game_state.camera = data.get('camera', {'x': 0, 'y': 0, 'zoom': 1.0})

        

        return game_state



    def parse_map(self, data: Dict[str, Any]) -> List[List[Dict]]:

        map_data = data.get('tiles', [])

        map_width = data.get('width', 0)

        map_height = data.get('height', 0)

        

        if not map_data or map_width == 0 or map_height == 0:

            return []

        

        tiles = []

        for y in range(map_height):

            row = []

            for x in range(map_width):

                index = y * map_width + x

                if index < len(map_data):

                    tile_data = map_data[index]

                    row.append({

                        'type': tile_data.get('type', 'grass'),

                        'walkable': tile_data.get('walkable', True),

                        'buildable': tile_data.get('buildable', True),

                        'resources': tile_data.get('resources', {})

                    })

                else:

                    row.append({'type': 'grass', 'walkable': True, 'buildable': True, 'resources': {}})

            tiles.append(row)

            

        return tiles