const HabitTrackerApp = {
    elements: {
        habitGrid: null,
        addHabitForm: null,
        addHabbitButton: null
    },

    init: function() {
        this.loadElements();
        this.render();
    },

    setupEventListeners: function() {
        this.elements.addHabbitButton.addEventListener('click', () => {
            this.elements.addHabitForm.style.display = 'block';
        });
    },

    loadElements: function() {
        this.elements.habitGrid = document.getElementById('habits-grid');
        this.elements.addHabitForm = document.getElementById('add-habit-form');
        this.elements.addHabbitButton = document.getElementById('add-habbit-button');
    },

    render: function() {
        const habitsHTML = HabitManager.habits.map(habit => {
            const cardClass = `habit-card ${habit.isCompleted ? 'habit-card--completed' : ''}`;
            const progress = (habit.currentCount / habit.targetCount) * 100;

            return `<div class="${cardClass}" data-habit-id="${habit.id}">
                        <div class="habit-card__header">
                            <div class="habit-card__icon">💧</div>
                            <h3 class="habit-card__title">${habit.name}</h3>
                        </div>

                        <p class="habit-card__description">${habit.description}</p>

                        <div class="habit-card__progress">
                            <div class="habit-card__progress-info">
                                <span>Прогресс</span>
                                <span>${progress}%</span>
                            </div>
                            <div class="habit-card__progress-bar">
                                <div class="habit-card__progress-fill" style="width: ${progress}%"></div>
                            </div>
                        </div>

                        <div class="habit-card__actions">
                            <button class="button button--primary">${habit.isCompleted ? 'Выполнено' : 'Отметить выполнение'}</button>
                            <button class="button button--secondary">Подробнее</button>
                        </div>
                </div>
                `
        }).join('');

        this.elements.habitGrid.innerHTML = habitsHTML;
    }
}

HabitTrackerApp.loadFromLocalStorage = function() {
    HabitManager.loadFromLocalStorage();

    if (HabitManager.habits.length == 0) {
        HabitManager.createHabit('Учить js', 'Писать не менее 1000000000 строк кода в день', 8);
    } 
}

document.addEventListener('DOMContentLoaded', () => {
    HabitTrackerApp.loadFromLocalStorage();
    HabitTrackerApp.init();
});