diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/fftcg/card.py b/fftcg/card.py
index 94f327a..e289eb1 100644
--- a/fftcg/card.py
+++ b/fftcg/card.py
@@ -5,19 +5,28 @@ class Card:
     def __init__(self, data):
         code_match = re.match(r'([0-9]+)-([0-9]+)([CRHLSB])', data["Code"])
         if code_match:
-            self._opus, self._serial, self._rarity = code_match.groups()
+            self.__opus, self.__serial, self.__rarity = code_match.groups()
 
         else:
-            self._opus = "PR"
-            self._serial = re.match(r'PR-([0-9]+)', data["Code"]).group(1)
-            self._rarity = "P"
+            code_match = re.match(r'PR-([0-9]+)', data["Code"])
+            if code_match:
+                self.__opus = "PR"
+                self.__serial = code_match.group(1)
+                self.__rarity = "P"
 
-        self._name = data["Name_EN"]
-        self._element = data["Element"]
+            else:
+                code_match = re.match(r'B-([0-9]+)', data["Code"])
+                if code_match:
+                    self.__opus = "B"
+                    self.__serial = code_match.group(1)
+                    self.__rarity = "B"
+
+        self.__name = data["Name_EN"]
+        self.__element = data["Element"]
 
     def __str__(self):
-        return f"'{self._name}' ({self._element}, {self.get_id()})"
+        return f"'{self.__name}' ({self.__element}, {self.get_id()})"
 
     # 6-048C
     def get_id(self):
-        return f"{self._opus}-{self._serial}{self._rarity}"
+        return f"{self.__opus}-{self.__serial}{self.__rarity}"
diff --git a/fftcg/opus.py b/fftcg/opus.py
new file mode 100644
index 0000000..5daf601
--- /dev/null
+++ b/fftcg/opus.py
@@ -0,0 +1,9 @@
+from .card import Card
+
+
+class Opus:
+    def __init__(self, data):
+        self.__cards = [Card(card_data) for card_data in data]
+
+    def __str__(self):
+        return "\n".join(str(card) for card in self.__cards)
diff --git a/main.py b/main.py
old mode 100755
new mode 100644
index 086c779..578b45e
--- a/main.py
+++ b/main.py
@@ -1,96 +1,26 @@
-#!/usr/bin/env python3
-
-import argparse
-import json
-import logging
-import os
 import requests
 
-from opus import Opus
-
-# constants
-GRID = 7, 10    # default in TTsim: 7 rows, 10 columns
-RESO = 429, 600 # default in TTsim: 480x670 pixels per card
-FURL = "https://ffdecks.com/api/cards/basic" # FFDecks API URL
-
-def main():
-    # Setup CLI
-    parser = argparse.ArgumentParser(
-        description='Imports FFTCG cards for TT-Sim.')
-
-    parser.add_argument(
-        'opusid',
-        default="7",
-        metavar="OpusID",
-        nargs="?",
-        help='the Opus to import')
-
-    parser.add_argument(
-        '-n', '--num_threads',
-        type=int,
-        default=20,
-        metavar="COUNT",
-        help='maximum number of concurrent requests')
-
-    args = parser.parse_args()
-
-    # Setup logging
-    logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(threadName)s %(message)s')
-
-    # Fetch and parse card database from ffdecks API
-    ffdecks_raw = requests.get(FURL)
-    ffdecks = json.loads(ffdecks_raw.content.decode("utf-8"))
-
-    # Load an Opus
-    opus_data = (card_data for card_data in ffdecks["cards"] if card_data["serial_number"].startswith(args.opusid))
-    myOpus = Opus(opus_data)
-
-    # output directory
-    if not os.path.exists("out"):
-        os.mkdir("out")
-    os.chdir("out")
-
-    # compose custom deck images
-    faceurls = []
-    for i, image in enumerate(myOpus.get_images(GRID, RESO, args.num_threads)):
-        filename = "opus_{}_{}.jpg".format(args.opusid, i)
-        image.save(filename)
-        # ask for upload
-        iurl = input("Upload '{}' and paste URL: ".format(filename))
-        if not iurl:
-            # add local file (maybe upload to steam cloud in cloud manager)
-            logging.warn("Using local file for '{}'.".format(filename))
-            iurl = "file://" + os.path.abspath(filename)
-        faceurls.append(iurl)
-
-    # Build json for element decks
-    elementaldecks = [
-        ["Fire"],
-        ["Water"],
-        ["Lightning"],
-        ["Ice"],
-        ["Wind"],
-        ["Earth"],
-        ["Light", "Dark"],
-        ["Multi"]
-    ]
-    for i, elements in enumerate(elementaldecks):
-        json_filename = "opus_{}_{}.json".format(args.opusid, "_".join(elements))
-        with open(json_filename, "w") as json_file:
-            cardfilter = lambda card: card._element in elements
-            json_data = myOpus.get_json(args.opusid, "/".join(elements), GRID, cardfilter, faceurls)
-            json_file.write(json_data)
-
-    json_filename = "fullopus_{}.json".format(args.opusid)
-    with open(json_filename, "w") as json_file:
-        cardfilter = lambda card: True
-        json_data = myOpus.get_json(args.opusid, "full", GRID, cardfilter, faceurls)
-        json_file.write(json_data)
-
-    # Bye
-    logging.info("Done. Put the generated JSON files in your 'Saved Objects' Folder.")
-    logging.info("Thanks for using fftcgtool!")
+from fftcg.opus import Opus
 
 
-if __name__ == "__main__":
-   main()
+def print_hi(name):
+    # supported params:
+    #  [str] language, text,
+    #  [array] type, element, cost, rarity, power, category_1, set
+    #  [str] multicard="○"|"", ex_burst="○"|"", code, special="《S》"|""
+    #  [int] exactmatch=0|1
+    params = {
+        "language": "de",
+        "text": "",
+        "element": ["fire"],
+        # "set": ["Opus XIV"],
+    }
+
+    opus_json = requests.post(url="https://fftcg.square-enix-games.com/de/get-cards", json=params).json()
+
+    opus = Opus(opus_json["cards"])
+    print(opus)
+
+
+if __name__ == '__main__':
+    print_hi('PyCharm')