untap/caching.gd

153 lines
4.7 KiB
GDScript

extends Node
signal cache_done
var _req_headers
var _consts = preload("res://data/consts.gd")
func _init() -> void:
_req_headers = PackedStringArray(["User-Agent: " + _consts.APP_NAME + "/" + _consts.APP_VERSION, "Accept: */*"])
func _cache_error(err: String) -> String:
return "CACHE::ERROR::" + err + "\n"
func _get_dict_from_file(filepath: String) -> Dictionary:
var file = FileAccess.open(filepath, FileAccess.READ)
var data = JSON.parse_string(file.get_as_text())
return data
## get_card_data_from_name
##
## _name: String [br]
## A wrapper for searching for a card by name. Use **get_card_data_from_id** where possible, as it avoids an expensive search for the new card, if the card has been cached already.
func get_card_data_from_name(_name: String) -> Dictionary:
return _get_card_data_from_bulk("name", _name)
## get_card_data_from_id
##
## id: String [br]
## This is the preferred wrapper to use when fetching card data, it checks the cache for preexisting data and uses that if it's available. Otherwise, it will search the bulk json for the data.
func get_card_data_from_id(id: String) -> Dictionary:
if FileAccess.file_exists("user://card_cache/" + id + "/card.json"):
return _get_dict_from_file("user://card_cache/" + id + "/card.json")
return _get_card_data_from_bulk("id", id)
func _get_card_data_from_bulk(field: String, search_query: String) -> Dictionary:
var file = FileAccess.open("user://card_cache/bulk.json", FileAccess.READ)
var bulk_json = JSON.parse_string(file.get_as_text())
var selected_entry = null
for entry in bulk_json:
if entry[field] == search_query:
selected_entry = entry
break
continue
file = null
if selected_entry == null:
return {}
if selected_entry["image_status"] != "missing":
_fetch_card_img(selected_entry)
var dir = DirAccess.open("user://")
dir.make_dir_recursive("user://card_cache/" + selected_entry["id"] + "/")
dir = null
file = FileAccess.open("user://card_cache/" + selected_entry["id"] + "/card.json", FileAccess.WRITE)
file.store_line(JSON.stringify(selected_entry, "\t"))
file = null
return selected_entry
func _fetch_card_img(data: Dictionary) -> Error:
if FileAccess.file_exists("user://card_cache/" + data["id"] + "card.png"):
return OK
var httpr = HTTPRequest.new()
add_child(httpr)
var err = httpr.request((data["image_uris"])["png"], _req_headers)
if err != OK:
push_error(_cache_error("GET_REQUEST") + "An error occured in the Scryfall request.")
return FAILED
var resp = await httpr.request_completed
var img = Image.new()
err = img.load_png_from_buffer(resp[3])
if err != OK:
push_error(_cache_error("IMG_LOADING") + "Couldn't load the image.")
return FAILED
var dir = DirAccess.open("user://")
dir.make_dir_recursive("user://card_cache/" + data["id"] + "/")
dir = null
img.save_png("user://card_cache/" + data["id"] + "/card.png")
img = null
return OK
func get_bulk_data(force: bool) -> Error:
if FileAccess.file_exists("user://card_cache/bulk.json"):
if force:
DirAccess.remove_absolute("user://card_cahce/bulk.json")
else:
return OK
var httpr = HTTPRequest.new()
add_child(httpr)
var error = httpr.request("https://api.scryfall.com/bulk-data/unique-artwork", _req_headers)
if error != OK:
push_error(_cache_error("GET_REQUEST") + "An error occurred in the Scryfall request.")
return FAILED
var response = await httpr.request_completed
if response[0] != HTTPRequest.RESULT_SUCCESS:
push_error(_cache_error("GET_REQUEST") + "Failed to fetch card data from Scryfall")
return FAILED
var unprocessed_body = response[3].get_string_from_utf8()
var card_content = JSON.parse_string(unprocessed_body)
if card_content == null:
push_error(_cache_error("PARSING") + "Failed to parse the Scryfall card results.")
return FAILED
error = httpr.request(card_content["download_uri"], _req_headers)
if error != OK:
push_error(_cache_error("GET_REQUEST") + "An error occurred in the Scryfall request.")
return FAILED
response = await httpr.request_completed
if response[0] != HTTPRequest.RESULT_SUCCESS:
push_error(_cache_error("GET_REQUEST") + "Failed to fetch card data from Scryfall")
return FAILED
unprocessed_body = response[3].get_string_from_utf8()
card_content = JSON.parse_string(unprocessed_body)
if card_content == null:
push_error(_cache_error("PARSING") + "Failed to parse the Scryfall card results.")
return FAILED
var dir = DirAccess.open("user://")
dir.make_dir_recursive("user://card_cache/") # lets ensure the path is there
dir = null
var data_cache = FileAccess.open("user://card_cache/bulk.json", FileAccess.WRITE)
data_cache.store_string(unprocessed_body)
data_cache = null
cache_done.emit()
return OK