// 1. ZDJĘCIA Z DATASETU
const hardcodedMeals = [
    { name: "Stek z warzywami", image: "/test_images/stek_z_warzywami.jpg", macros: { kcal: 525, p: 48, f: 35, c: 6 } },
    { name: "Mini pizza salami", image: "/test_images/mini_pizza_salami.jpg", macros: { kcal: 132, p: 6, f: 6, c: 15 } },
    { name: "Jajecznica z brokułem", image: "/test_images/jajecznica_z_brokulem.jpg", macros: { kcal: 296, p: 19, f: 21, c: 7 } },
    { name: "Mix sałat", image: "/test_images/miska_salaty.jpg", macros: { kcal: 20, p: 1, f: 0, c: 4 } },
    { name: "Bekon", image: "/test_images/bekon.jpg", macros: { kcal: 470, p: 32, f: 36, c: 1 } },
    { name: "Owsianka z owocami", image: "/test_images/owsianka_z_owocami.jpg", macros: { kcal: 155, p: 5, f: 3, c: 29 } }
];

// 2. ZDJĘCIA SPOZA DATASETU
const externalMeals = [
    { name: "Burger drwala", image: "/test_images/burger_drwala.png", macros: { kcal: 915, p: 39, f: 52, c: 70 } },
    { name: "Kotelty drobiowe z ziemniakami i sałatą", image: "/test_images/kotelty_z_ziemniakami.jpeg", macros: { kcal: 590, p: 61, f: 11, c: 63 } },
    { name: "Spaghetti bolognese", image: "/test_images/spaghetti-bolognese.jpg", macros: { kcal: 405, p: 21, f: 17, c: 43 } },
    { name: "SUPER bowl", image: "/test_images/super_bowl.png", macros: { kcal: 716, p: 33, f: 42, c: 60 } }
];

// 3. POSIŁKI UŻYTKOWNIKÓW
let userMeals = JSON.parse(localStorage.getItem('savedUserMeals')) || [];

let currentFile = null; 
let currentTruth = null; 
let activeTab = null;

// Słownik do przywracania oryginalnych nazw przycisków
const btnOriginalText = {
    test: "🗂️ Dataset",
    external: "🌍 Spoza Datasetu",
    user: "👤 Użytkownik"
};

window.onload = () => {};

function openSidebar(tab) {
    const sidebar = document.getElementById('sidebar');
    const btns = {
        test: document.getElementById('btnTest'),
        external: document.getElementById('btnExternal'),
        user: document.getElementById('btnUser')
    };

    // Resetujemy wszystkie przyciski do stanu domyślnego
    for (let key in btns) {
        btns[key].classList.remove('open');
        btns[key].classList.remove('shifted'); // Usuwamy przesunięcie
        btns[key].style.backgroundColor = "#333";
        btns[key].style.color = "white";
        btns[key].innerText = btnOriginalText[key]; 
    }

    // Jeśli kliknięto aktywny panel -> zamknij i przerwij (wszystko wraca na prawo)
    if (activeTab === tab && sidebar.classList.contains('open')) {
        sidebar.classList.remove('open');
        activeTab = null;
        return;
    }

    // Otwarcie nowego panelu
    sidebar.classList.add('open');
    activeTab = tab;

    // Otwarcie nowego panelu
    sidebar.classList.add('open');
    activeTab = tab;

    // JEŚLI TO TELEFON - ZAMKNIJ PRZYCISKI PO WYBORZE
    if (window.innerWidth <= 800) {
        document.getElementById('menuContainer').classList.remove('show');
    }

    // Przesuwamy WSZYSTKIE przyciski na lewo (do krawędzi panelu)
    for (let key in btns) {
        btns[key].classList.add('shifted');
    }

    // Stylizacja TYLKO aktywnego przycisku i zmiana tekstu na emotkę
    btns[tab].classList.add('open');
    btns[tab].style.backgroundColor = "#00ff88";
    btns[tab].style.color = "#121212";
    btns[tab].innerText = "▶︎▶︎▶︎"; // Emotka zastępująca ">>> Zamknij"

    // Wybór odpowiedniej zawartości do wyświetlenia
    if (tab === 'test') {
        renderList(hardcodedMeals, 'test');
    } else if (tab === 'external') {
        renderList(externalMeals, 'external');
    } else {
        renderList(userMeals, 'user');
    }
}

function renderList(mealsArray, type) {
    const list = document.getElementById('mealsList');
    const form = document.getElementById('addMealForm');
    const title = document.getElementById('sidebarTitle');
    const desc = document.getElementById('sidebarDesc');

    list.innerHTML = "";

    if (type === 'test') {
        title.innerText = "Baza Datasetu";
        desc.innerText = "Oryginalne posiłki wycięte ze zbioru testowego.";
        form.style.display = 'none'; 
        if(mealsArray.length === 0) list.innerHTML = "<p style='color:#555;'>Brak zdjęć w skrypcie.</p>";
    } else if (type === 'external') {
        title.innerText = "Spoza Datasetu";
        desc.innerText = "Testy na zdjęciach spoza zbioru.";
        form.style.display = 'none'; 
        if(mealsArray.length === 0) list.innerHTML = "<p style='color:#555;'>Brak zewnętrznych zdjęć.</p>";
    } else {
        title.innerText = "Posiłki Użytkownika";
        desc.innerText = "Zapisywane lokalnie w przeglądarce.";
        form.style.display = 'block';
        if(mealsArray.length === 0) list.innerHTML = "<p style='color:#555; text-align:center;'>Dodaj pierwszy posiłek poniżej!</p>";
    }

    mealsArray.forEach((meal, index) => {
        list.innerHTML += `
            <div class="meal-card" onclick="loadMealIntoAnalyzer(${index}, '${type}')">
                <img src="${meal.image}" alt="Zdjęcie">
                <div class="meal-card-title">${meal.name}</div>
                <div class="meal-card-macro">
                    🔥 ${meal.macros.kcal} kcal | 🍗 ${meal.macros.p}g | 🥑 ${meal.macros.f}g | 🍞 ${meal.macros.c}g
                </div>
            </div>
        `;
    });
}

function previewNewImage(event) {
    if(event.target.files.length === 0) return;
    currentFile = event.target.files[0];
    currentTruth = null; 
    setupPreview(URL.createObjectURL(currentFile), "Tryb: Nieznane zdjęcie (Z dysku)");
}

async function loadMealIntoAnalyzer(index, type) {
    let meal;
    if (type === 'test') meal = hardcodedMeals[index];
    else if (type === 'external') meal = externalMeals[index];
    else meal = userMeals[index];

    currentTruth = meal.macros;
    
    try {
        const res = await fetch(meal.image);
        const blob = await res.blob();
        currentFile = new File([blob], "test_image.jpg", { type: "image/jpeg" });
        setupPreview(meal.image, `Tryb: Ground Truth (${meal.name})`);
        
        if(window.innerWidth < 800) openSidebar(activeTab); 
    } catch (err) {
        alert("Błąd ładowania! Upewnij się, że zdjęcie jest fizycznie w folderze.");
    }
}

function setupPreview(imageSrc, modeText) {
    const preview = document.getElementById('preview');
    const modeInd = document.getElementById('modeIndicator');
    
    preview.src = imageSrc;
    preview.style.display = 'block';
    document.getElementById('analyzeBtn').disabled = false;
    document.getElementById('resultsPanel').style.display = 'none';
    
    modeInd.innerText = modeText;
    modeInd.style.color = currentTruth ? "#ffaa00" : "#aaa";
}

async function analyzeImage() {
    if (!currentFile) return;

    const btn = document.getElementById('analyzeBtn');
    btn.disabled = true;
    btn.innerText = "⏳ ONNX analizuje...";

    const formData = new FormData();
    formData.append("file", currentFile);

    try {
        const response = await fetch('/predict-macro', {
            method: 'POST',
            body: formData
        });
        const data = await response.json();
        displayResults(data.predictions);
    } catch (error) {
        alert("Błąd serwera! Upewnij się, że FastAPI działa.");
        console.error(error);
    } finally {
        btn.disabled = false;
        btn.innerText = "Analizuj Makro";
    }
}

function displayResults(preds) {
    document.getElementById('res-kcal').innerText = preds.kcal + " kcal";
    document.getElementById('res-protein').innerText = preds.protein_g + " g";
    document.getElementById('res-fat').innerText = preds.fat_g + " g";
    document.getElementById('res-carb').innerText = preds.carb_g + " g";

    const truthCols = document.querySelectorAll('.truth-col');

    if (currentTruth) {
        truthCols.forEach(col => col.style.display = 'table-cell');
        
        document.getElementById('truth-kcal').innerText = currentTruth.kcal + " kcal";
        document.getElementById('truth-protein').innerText = currentTruth.p + " g";
        document.getElementById('truth-fat').innerText = currentTruth.f + " g";
        document.getElementById('truth-carb').innerText = currentTruth.c + " g";

        document.getElementById('diff-kcal').innerText = Math.abs((preds.kcal - currentTruth.kcal).toFixed(1)) + " kcal";
        document.getElementById('diff-protein').innerText = Math.abs((preds.protein_g - currentTruth.p).toFixed(1)) + " g";
        document.getElementById('diff-fat').innerText = Math.abs((preds.fat_g - currentTruth.f).toFixed(1)) + " g";
        document.getElementById('diff-carb').innerText = Math.abs((preds.carb_g - currentTruth.c).toFixed(1)) + " g";
    } else {
        truthCols.forEach(col => col.style.display = 'none');
    }

    document.getElementById('resultsPanel').style.display = 'block';
}

function addUserMeal() {
    const fileInput = document.getElementById('newMealImage');
    const name = document.getElementById('newMealName').value;
    const kcal = document.getElementById('newMealKcal').value;
    const p = document.getElementById('newMealP').value;
    const f = document.getElementById('newMealF').value;
    const c = document.getElementById('newMealC').value;

    if(!fileInput.files[0] || !name || !kcal) {
        alert("Wypełnij nazwę, zdjęcie i chociaż kalorie!");
        return;
    }

    const reader = new FileReader();
    reader.onload = function(e) {
        const newMeal = {
            name: name,
            image: e.target.result,
            macros: { kcal: kcal, p: p||0, f: f||0, c: c||0 }
        };
        
        userMeals.push(newMeal);
        localStorage.setItem('savedUserMeals', JSON.stringify(userMeals));
        
        document.getElementById('newMealName').value = "";
        fileInput.value = "";
        renderList(userMeals, 'user');
    };
    reader.readAsDataURL(fileInput.files[0]);
}

// Obsługa menu na telefonach
function toggleMobileMenu() {
    document.getElementById('menuContainer').classList.toggle('show');
}