extends Node

const HOST = "https://mcg.zyg.ovh/"
const IMGURL = HOST + "images/cards/"

func res_file_name(url: String) -> String:
	return "user://" + url.trim_prefix(HOST).replace("/","_")

func fetch(url: String, cbObj: Object, cbFn: String):
	# Check for cached resource
	var file := File.new()
	var fname := res_file_name(url)
	# Return cached resource if available
	if file.file_exists(fname):
		file.open(fname, File.READ)
		var flen := file.get_len()
		var buf := file.get_buffer(flen)
		cbObj.call(cbFn, HTTPRequest.RESULT_SUCCESS, 200, [], buf)
		return
	var req := HTTPRequest.new()
	add_child(req)
	req.connect("request_completed", self, "_request_completed", [url, cbObj, cbFn])
	req.request(url)

func _request_completed(result: int, response_code: int, headers: PoolStringArray, body: PoolByteArray, url: String, cbObj: Object, cbFn: String):
	# Cache result for later
	if result == HTTPRequest.RESULT_SUCCESS:
		# Get file name by trimming the host
		var file := File.new()
		file.open(res_file_name(url), File.WRITE)
		file.store_buffer(body)
		file.close()
	# Call callback
	cbObj.call(cbFn, result, response_code, headers, body)