// Function to show an element
function showElement(selector) {
    const element = document.querySelector(selector);
    if (element) {
        element.style.display = 'block';
    }
}

// Function to randomly select a customer
function showRandomCustomer() {
    const customers = ['#customer1 img', '#customer2 img', '#customer3 img'];
    const randomIndex = Math.floor(Math.random() * customers.length);
    showElement(customers[randomIndex]);
}

var questions = [
        "如何建立统一的度量衡体系以加强中央集权？",
        "如何制定合理的税收政策来增强国库？",
        "如何组织和动员资源建造长城以防御外敌？",
        "如何执行禁止私人持有武器的政策？",
        "如何推广统一的书写系统来加强文化统一？",
        "如何合理征召士兵并保持军队的高效运作？",
        "如何处理与儒家思想相关的政治异见？",
        "如何加强皇帝的集权制度？",
        "如何建立和维护一个有效的道路交通网络？",
        "如何处理与周边国家的外交关系？"
    ];
document.addEventListener("DOMContentLoaded", function() {
    

    // Show dialogue box
    showElement("#dialogueBox img");

    // Show all dishes
    showElement('#mapo-tofu img');
    showElement('#roast-duck img');
    showElement('#yangzhou-fried-rice img');
    showElement('#braised-prawns img');
    showElement('#kung-pao-chicken img');

    // Show a random customer
    showRandomCustomer();

    // Show normal Qin Shi Huang
    showElement('#qinshihuang img');

    // Show random question
    var randomQuestion = questions[Math.floor(Math.random() * questions.length)];
    document.getElementById("dialogueText").innerHTML = randomQuestion;
});