import ast
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import json
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import os
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import pandas as pd
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import re
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from urllib import request, error
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from config import Config
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"""
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Note: All codes in this file realies on Scryfall API to aggregate card database and their images.
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Scryfall API doc is available at: https://scryfall.com/docs/api
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"""
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def fetch_all_cards_text(url='https://api.scryfall.com/cards/search?q=layout:normal+format:modern+lang:en+frame:2003',
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csv_name=None):
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"""
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Given the query URL using Scryfall API, aggregate all card information and convert them from json to table
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:param url: query URL
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:param csv_name: path of the csv file to save the result
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:return: pandas dataframe of the fetch cards
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"""
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has_more = True
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cards = []
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# get cards dataset as a json from the query
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while has_more:
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res_file_dir, http_message = request.urlretrieve(url)
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with open(res_file_dir, 'r') as res_file:
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res_json = json.loads(res_file.read())
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cards += res_json['data']
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has_more = res_json['has_more']
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if has_more:
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url = res_json['next_page']
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print(len(cards))
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# Convert them into a dataframe, and truncate unnecessary columns
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df = pd.DataFrame.from_dict(cards)
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if csv_name is not None:
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#df = df[['artist', 'border_color', 'collector_number', 'color_identity', 'colors', 'flavor_text', 'image_uris',
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# 'mana_cost', 'legalities', 'name', 'oracle_text', 'rarity', 'type_line', 'set', 'set_name', 'power',
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# 'toughness']]
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df.to_csv(csv_name, sep=';') # Comma seperator doesn't work, since some columns are saved as a dict
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return df
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def load_all_cards_text(csv_name):
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df = pd.read_csv(csv_name, sep=';') # Comma seperator doesn't work, since some columns are saved as a dict
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return df
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def get_valid_filename(s):
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"""
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Return the given string converted to a string that can be used for a clean
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filename. Remove leading and trailing spaces; convert other spaces to
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underscores; and remove anything that is not an alphanumeric, dash,
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underscore, or dot.
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>>> get_valid_filename("john's portrait in 2004.jpg")
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'johns_portrait_in_2004.jpg'
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From: https://github.com/django/django/blob/master/django/utils/text.py
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:param s: input string
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:return: string of valid filename
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"""
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s = str(s).strip().replace(' ', '_')
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return re.sub(r'(?u)[^-\w.]', '', s)
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def fetch_all_cards_image(df, out_dir=None, size='png'):
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"""
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Download card images from Scryfall database
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:param df: pandas dataframe (or series) of cards
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:param out_dir: path of output directory
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:param size: Image format given by Scryfall API - 'png', 'large', 'normal', 'small', 'art_crop', 'border_crop'
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:return:
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"""
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if size != 'png':
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print('Note: this repo has been implemented using only \'png\' size. '
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'Using %s may result in an unexpected behaviour in other parts of this repo.' % size)
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if isinstance(df, pd.Series):
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# df is a single row of card
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fetch_card_image(df, out_dir, size)
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else:
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from concurrent.futures import ThreadPoolExecutor, wait as fwait
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executor = ThreadPoolExecutor(5)
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# df is a dataframe containing list of cards
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arglist = []
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for ind, row in df.iterrows():
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arglist.append(executor.submit(fetch_card_image, row, out_dir, size))
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fwait(arglist)
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# fetch_card_image(row, out_dir, size)
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def fetch_card_image(row, out_dir=None, size='png'):
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"""
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Download a card's image from Scryfall database
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:param row: pandas series including the card's information
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:param out_dir: path of the output directory
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:param size: Image format given by Scryfall API - 'png', 'large', 'normal', 'small', 'art_crop', 'border_crop'
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:return:
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"""
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if out_dir is None:
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s = row['set']
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if s == 'con':
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s = 'con__'
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out_dir = '%s/card_img/%s/%s' % (Config.data_dir, size, s)
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if not os.path.exists(out_dir):
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os.makedirs(out_dir)
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# Extract card's name and URL for image accordingly
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# Double-faced cards have a different format, and results in two separate card images
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png_urls = []
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card_names = []
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if row['layout'] in ['transform', 'double_faced_token']:
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if isinstance(row['card_faces'], str): # For some reason, dict isn't being parsed in the previous step
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card_faces = ast.literal_eval(row['card_faces'])
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else:
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card_faces = row['card_faces']
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for i in range(len(card_faces)):
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png_urls.append(card_faces[i]['image_uris'][size])
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card_names.append(get_valid_filename(card_faces[i]['name']))
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else: #if row['layout'] == 'normal':
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if isinstance(row['image_uris'], str): # For some reason, dict isn't being parsed in the previous step
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png_urls.append(ast.literal_eval(row['image_uris'])[size])
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else:
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png_urls.append(row['image_uris'][size])
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card_names.append(get_valid_filename(row['name']))
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for i in range(len(png_urls)):
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img_name = '%s/%s_%s.png' % (out_dir, row['collector_number'], card_names[i])
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if not os.path.isfile(img_name):
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request.urlretrieve(png_urls[i], filename=img_name)
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print(img_name)
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def main():
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# Query card data by each set, then merge them together
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for set_name in Config.all_set_list:
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set_name_m = set_name
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if set_name_m == 'con':
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set_name_m = 'con__'
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csv_name = '%s/csv/%s.csv' % (Config.data_dir, set_name_m)
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print(csv_name)
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if not os.path.isfile(csv_name):
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df = fetch_all_cards_text(url='https://api.scryfall.com/cards/search?q=set:%s+lang:en' % set_name,
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csv_name=csv_name)
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else:
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df = load_all_cards_text(csv_name)
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df.sort_values('collector_number')
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fetch_all_cards_image(df, out_dir='%s/card_img/png/%s' % (Config.data_dir, set_name))
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#df = fetch_all_cards_text(url='https://api.scryfall.com/cards/search?q=layout:normal+lang:en+frame:2003',
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# csv_name='%s/csv/all.csv' % Config.data_dir)
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return
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if __name__ == '__main__':
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main()
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