import json
import os
import random
from flask import Flask, jsonify, render_template, request

BASE_DIR = os.path.dirname(os.path.abspath(__file__))
SCHEMA_PATH = os.path.normpath(os.path.join(BASE_DIR, '..', 'schema.json'))
print(SCHEMA_PATH)

app = Flask(__name__)

@app.route("/")
def index():
    return render_template("home.html")

@app.route("/health")
def health():
    return "Health check passed!"

def load_questions():
    with open(SCHEMA_PATH, 'r', encoding='utf-8') as file:
        return json.load(file)

@app.route('/api/questions', methods=['GET'])
def get_questions():
    count_param = request.args.get('count', default=3)
    try:
        count = int(count_param)
    except ValueError:
        return jsonify({"error": "Parametr 'count' musí být platné číslo."}), 400
    if count < 0:
        return jsonify({"error": "Počet otázek nemůže být záporný."}), 400

    try:
        all_questions = load_questions()
    except Exception as e:
        print(e)
        return jsonify({"error": "Soubor schema.json nebyl nalezen nebo je prázdný."}), 500

    if count > len(all_questions):
        count = len(all_questions)

    random_questions = random.sample(all_questions, count)
    return random_questions


if __name__ == "__main__":
    app.run(port=5000)