import json
import uuid

with open('deck.json', 'r', encoding='utf-8') as f:
    data = json.load(f)

original_notes = data['notes']
new_notes = []
existing_signatures = set()

def signature(front0, front1, back):
    return f"{front0}||{front1}||{back}"

for note in original_notes:
    fields = note['fields']
    if len(fields) < 3:
        continue

    original_front = fields[0]   # "ich"
    original_back = fields[1]    # "jag"
    original_audio = fields[2]   # "[sound:Jag-4718d0.mp3]"

    sig = signature(original_front, original_audio, original_back)
    reversed_sig = signature(original_back, original_audio, original_front)

    if note['guid'].startswith('rev-') or reversed_sig in existing_signatures:
        continue

    new_note = {
        "__type__": "Note",
        "fields": [
            original_back,      # Feld 0: Frage Text (Antwort aus Original)
            original_audio,     # Feld 1: Frage Audio (MP3 aus Original)
            original_front      # Feld 2: Antwort Text (Frage aus Original)
        ],
        "guid": f"rev-{uuid.uuid4()}",
        "note_model_uuid": note["note_model_uuid"],
        "tags": note.get("tags", []) + ["reversed"]
    }

    new_notes.append(new_note)
    existing_signatures.add(sig)
    existing_signatures.add(reversed_sig)

data['notes'].extend(new_notes)

with open('crowdanki_export_dupliziert.json', 'w', encoding='utf-8') as f:
    json.dump(data, f, ensure_ascii=False, indent=2)