app.py

from flask import Flask, render_template, request, session
import requests
from bs4 import BeautifulSoup
import json

app = Flask(__name__)
app.secret_key = 'your_secret_key'

@app.route('/', methods=['GET', 'POST'])
def index():
    if 'en_cz_translations' not in session:
        session['en_cz_translations'] = []
    if 'cz_en_translations' not in session:
        session['cz_en_translations'] = []

    if request.method == 'POST':
        term = request.form.get('term')
        direction = request.form.get('direction')

        if direction == 'en_cz':
            url = f'https://slovnik.seznam.cz/preklad/anglicky_cesky/{term}'
        elif direction == 'cz_en':
            url = f'https://slovnik.seznam.cz/preklad/cesky_anglicky/{term}'
        else:
            return render_template('index.html', en_cz_translations=session['en_cz_translations'], cz_en_translations=session['cz_en_translations'])

        response = requests.get(url)

        if response.status_code == 200:
            soup = BeautifulSoup(response.content, 'lxml')

            # Najdeme skript obsahující JSON data
            script_tag = soup.find('script', {'id': '__NEXT_DATA__'})

            if script_tag:
                try:
                    json_data = json.loads(script_tag.string)
                    # Extrahujeme relevantní část JSON dat
                    translations = json_data['props']['pageProps']['translations']
                    term_data = []
                    for translation in translations:
                        sens_data = []
                        for sens in translation['sens']:
                            desc = sens.get('desc2', '')
                            note = sens.get('note2', '')
                            morf = sens.get('morf', '')
                            samples = [f"{samp['samp2s']} -> {samp['samp2t']}" for samp in sens.get('samp2', [])]
                            trans = [''.join(t) for t in sens.get('trans', []) if t]
                            coll2 = [f"{c['coll2s']} -> {c['coll2t']}" for c in sens.get('coll2', [])]
                            sens_data.append({'desc': desc, 'note': note, 'morf': morf, 'samples': samples, 'trans': trans, 'coll2': coll2})
                        term_data.append(sens_data)

                    if direction == 'en_cz':
                        session['en_cz_translations'] = [(term, term_data)] + session['en_cz_translations']
                    else:
                        session['cz_en_translations'] = [(term, term_data)] + session['cz_en_translations']

                except json.JSONDecodeError as e:
                    error = f'Error decoding JSON: {str(e)}'
                    return render_template('index.html', error=error, en_cz_translations=session['en_cz_translations'], cz_en_translations=session['cz_en_translations'])
            else:
                error = 'Error: Unable to find the JSON data script tag.'
                return render_template('index.html', error=error, en_cz_translations=session['en_cz_translations'], cz_en_translations=session['cz_en_translations'])
        else:
            error = f'Error: Unable to fetch data for term "{term}".'
            return render_template('index.html', error=error, en_cz_translations=session['en_cz_translations'], cz_en_translations=session['cz_en_translations'])

    return render_template('index.html', en_cz_translations=session['en_cz_translations'], cz_en_translations=session['cz_en_translations'])

if __name__ == '__main__':
    app.run(debug=True)