import logging
import os

from util import json_path

logger = logging.getLogger(__name__)


def download_board(board_id, instance_config_id, sequence_id, source):
	local_file = "static/progress/images/{config_id}/{sequence_id}/{board_id}".format(
		config_id=instance_config_id,
		sequence_id=sequence_id,
		board_id=board_id)
	if os.path.exists(local_file):
		return local_file
	url = "/game2/editor/config/{config_id}/sequence/{sequence_id}/board/{board_id}/".format(
		config_id=instance_config_id,
		sequence_id=sequence_id,
		board_id=board_id
	)
	board = source._get(url)
	if not board.ok:
		raise ConnectionError()
	data = board.json()
	preview_url = json_path(data, "preview_url.medium")
	logger.debug(preview_url)
	os.makedirs(local_file[:-len(board_id)], exist_ok=True)
	source.download_file(preview_url, local_file)
	return local_file


def get_config(source, instance_id):
	url = "/game2/editor/config/{config_id}/".format(config_id=instance_id)
	instance_data = get_json(source, url)
	caches = url + "cache/"
	cache_data = get_json(source, caches)

	result = {
		"name": instance_data["name"],
		"id": instance_data["@id"],
		"caches": cache_data
	}
	return result


def get_board_data(source, instance_id, sequence_id, board_id):
	url = "/game2/editor/config/{config_id}/sequence/{sequence_id}/board/{board_id}/".format(
		config_id=instance_id,
		sequence_id=sequence_id,
		board_id=board_id
	)
	instance_data = get_json(source, url)
	if instance_data is None:
		return {"class": "error"}
	result = {
		"class": instance_data["@class"],
	}
	for i in ["image", "audio", "video"]:
		key = i + "_file"
		result["has_" + i] = bool(key in instance_data and instance_data[key])
	return result


cache = {}


def get_json(source, url):
	if url in cache:
		return cache[url]
	try:
		data = source.get_json(url)

	except Exception as e:
		print("exception", e, e.args)  # TODO: logging
		data = None
	cache[url] = data
	return data