extends Node
## The card class [br][br]
##
##
## Contains helper text for the text, the cards ID, and the image path.
## The goal of this class is to make card management easier.

# we want to use this to convert the mana cost into text 
# in the helper text box, but thats for the future
const ManaCosts = preload("res://data/mana.gd")

var cached = false

var card_id = "placedholder_id"
var card_name = "placeholder_name"
var card_type = "placeholder_card_type"
var oracle_text = "placeholder_oracle_text"
var image_path = "placeholder_image_path"

func _ready() -> void:
	load_card("d3f10f07-7cfe-4a6f-8de6-373e367a731b")
	pass	

## _check_cache
## id - String containing the card's ID [br]
## Checks if the card has already been cached
func _check_cache(id) -> bool:
	if (FileAccess.file_exists("user://card_cache/" + id + "/card.json")):
		return true
	return false

## _do_scryfall_get
## id - String containing the card's ID [br]
## Using the scryfall API, fetches JSON information about the card
## caches this data to the disk at user://card_cache/[id].json, and 
## the image of the card at user://card_cache/[id].png
func _scryfall_response(_result, response_code, _headers, body):
	if (response_code != 200):
		push_error("Failed to fetch card data from Scryfall")
	
	var unprocessed_body = body.get_string_from_utf8()
	var card_content = JSON.parse_string(unprocessed_body)
	if (card_content == null):
		push_error("Failed to parse the Scryfall card results.")
		
	var dir = DirAccess.open("user://")
	dir.make_dir_recursive("user://card_cache/" + card_content["id"] + "/") # lets ensure the path is there
	dir = null
	
	var card_cache = FileAccess.open("user://card_cache/" + card_content["id"] + "/card.json", FileAccess.WRITE)
	card_cache.store_string(unprocessed_body) # cache the json response
	card_cache = null # closes the file
	
	var image_uris = card_content["image_uris"]
	print(image_uris["png"])
	
	load_card(card_content["id"]) # call again, since we have filled the cache
	# TODO store image at the same spot ("user://card_cache/id.png")

func _do_http_request(id) -> void:
	var httpr = HTTPRequest.new()
	add_child(httpr)
	httpr.request_completed.connect(_scryfall_response)
	var headers = PackedStringArray(["User-Agent: MTGUntapClone/0.1", "Accept: */*"])
	
	var error = httpr.request("https://api.scryfall.com/cards/" + id, headers)
	if error != OK:
		push_error("An error occurred in the Scryfall request.")

func load_card(id) -> void:
	if !(_check_cache(id)):
		_do_http_request(id)
		return
	
	var ondisk_card = FileAccess.open("user://card_cache/" + id + "/card.json", FileAccess.READ)
	var card_json = JSON.parse_string(ondisk_card.get_as_text())
	# parse json here to get card content
	card_id = card_json["id"]
	card_name = card_json["name"]
	card_type = card_json["type_line"]
	oracle_text = card_json["oracle_text"]
	var image_uris = card_json["image_uris"]
	image_path = image_uris["png"] #TODO: change this to file path of the image
	

	ondisk_card = null

## these variables above will be used for the helper boxes we draw
## on hover, to make cards easier to read