import React, { useState, useEffect } from 'react';
import axios from 'axios';
import { toast } from 'sonner';
import { useTranslation } from 'react-i18next';
import { Plus, RefreshCw, Search, X, Filter } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { ItemCard } from '@/components/dashboard/ItemCard';
import { ItemModal } from '@/components/dashboard/ItemModal';
import { DeleteConfirmationModal } from '@/components/dashboard/DeleteConfirmationModal';
import { PriceHistoryModal } from '@/components/dashboard/PriceHistoryModal';

const API_URL = '/api';

export default function Dashboard() {
    const { t } = useTranslation();
    const [items, setItems] = useState([]);
    const [searchTerm, setSearchTerm] = useState('');
    const [selectedCategory, setSelectedCategory] = useState('all');
    const [categories, setCategories] = useState([]);
    const [showAddModal, setShowAddModal] = useState(false);
    const [editingItem, setEditingItem] = useState(null);
    const [itemToDelete, setItemToDelete] = useState(null);
    const [historyItem, setHistoryItem] = useState(null);
    const [zoomedImage, setZoomedImage] = useState(null);

    const refreshItems = async () => {
        try {
            const response = await axios.get(`${API_URL}/items`);
            const sortedItems = response.data.sort((a, b) => a.id - b.id);
            setItems(sortedItems);
        } catch (error) {
            console.error('Error fetching items:', error);
            toast.error(t('toast.fetchError'));
        }
    };

    const loadCategories = async () => {
        try {
            const response = await axios.get(`${API_URL}/items/categories/list`);
            setCategories(response.data);
        } catch (error) {
            console.error('Error fetching categories:', error);
        }
    };

    useEffect(() => {
        refreshItems();
        loadCategories();
        const interval = setInterval(refreshItems, 10000);
        return () => clearInterval(interval);
    }, []);

    const handleCheck = async (id) => {
        try {
            toast.info(t('toast.refreshStarted'));
            await axios.post(`${API_URL}/items/${id}/check`);
            toast.success(t('toast.refreshComplete'));
            refreshItems();
        } catch (error) {
            console.error('Error triggering check:', error);
            toast.error(t('toast.refreshError'));
        }
    };

    const handleRefreshAll = async () => {
        try {
            toast.info(t('toast.refreshStarted'));
            setItems(prevItems => prevItems.map(item => ({ ...item, is_refreshing: true })));
            await axios.post(`${API_URL}/jobs/refresh-all`);
            toast.success(t('toast.refreshComplete'));
        } catch (error) {
            console.error('Error triggering refresh all:', error);
            toast.error(t('toast.refreshError'));
            refreshItems();
        }
    };

    const handleDelete = async () => {
        if (!itemToDelete) return;
        try {
            await axios.delete(`${API_URL}/items/${itemToDelete.id}`);
            toast.success(t('toast.itemDeleted'));
            refreshItems();
            setItemToDelete(null);
        } catch (error) {
            console.error('Error deleting item:', error);
            toast.error(t('toast.itemError'));
        }
    };

    const handleCategoryUpdate = async (itemId, category) => {
        try {
            await axios.patch(`${API_URL}/items/${itemId}/category?category=${encodeURIComponent(category || '')}`);
            toast.success('Catégorie mise à jour');
            refreshItems();
            loadCategories();
        } catch (error) {
            console.error('Error updating category:', error);
            toast.error('Erreur lors de la mise à jour');
        }
    };

    const filteredItems = items.filter(item => {
        const term = searchTerm.toLowerCase();
        const matchesSearch = (
            item.name.toLowerCase().includes(term) ||
            item.url.toLowerCase().includes(term) ||
            (item.tags && item.tags.toLowerCase().includes(term)) ||
            (item.description && item.description.toLowerCase().includes(term))
        );

        const matchesCategory = selectedCategory === 'all' ||
            (selectedCategory === 'uncategorized' && !item.category) ||
            item.category === selectedCategory;

        return matchesSearch && matchesCategory;
    });

    return (
        <div className="space-y-6 animate-in fade-in duration-500">
            <div className="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
                <div>
                    <h2 className="text-2xl font-bold tracking-tight">{t('dashboard.title')}</h2>
                    <p className="text-muted-foreground">{t('dashboard.description')}</p>
                </div>
                <div className="flex flex-wrap items-center gap-2">
                    <div className="relative w-full md:w-64">
                        <Search className="absolute left-2 top-2.5 h-4 w-4 text-muted-foreground" />
                        <Input
                            placeholder={t('dashboard.search')}
                            className="pl-8"
                            value={searchTerm}
                            onChange={(e) => setSearchTerm(e.target.value)}
                        />
                    </div>
                    <Select value={selectedCategory} onValueChange={setSelectedCategory}>
                        <SelectTrigger className="w-full md:w-[180px]">
                            <Filter className="mr-2 h-4 w-4" />
                            <SelectValue placeholder="Catégorie" />
                        </SelectTrigger>
                        <SelectContent>
                            <SelectItem value="all">Toutes</SelectItem>
                            <SelectItem value="uncategorized">Sans catégorie</SelectItem>
                            {categories.map(cat => (
                                <SelectItem key={cat} value={cat}>{cat}</SelectItem>
                            ))}
                        </SelectContent>
                    </Select>
                    <Button variant="outline" onClick={handleRefreshAll}>
                        <RefreshCw className="mr-2 h-4 w-4" />
                        {t('dashboard.refreshAll')}
                    </Button>
                    <Button onClick={() => setShowAddModal(true)}>
                        <Plus className="mr-2 h-4 w-4" />
                        {t('dashboard.addItem')}
                    </Button>
                </div>
            </div>

            <div className="grid gap-6 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4">
                {filteredItems.map(item => (
                    <ItemCard
                        key={item.id}
                        item={item}
                        onEdit={setEditingItem}
                        onDelete={setItemToDelete}
                        onCheck={handleCheck}
                        onZoom={setZoomedImage}
                        onCategoryUpdate={handleCategoryUpdate}
                        onViewHistory={setHistoryItem}
                        categories={categories}
                    />
                ))}
            </div>

            <ItemModal
                open={showAddModal}
                onClose={() => setShowAddModal(false)}
                onSaved={refreshItems}
            />

            <ItemModal
                open={!!editingItem}
                item={editingItem}
                onClose={() => setEditingItem(null)}
                onSaved={refreshItems}
            />

            <DeleteConfirmationModal
                open={!!itemToDelete}
                item={itemToDelete}
                onClose={() => setItemToDelete(null)}
                onConfirm={handleDelete}
            />

            <PriceHistoryModal
                open={!!historyItem}
                item={historyItem}
                onClose={() => setHistoryItem(null)}
            />

            {/* Image Zoom Modal */}
            {zoomedImage && (
                <div
                    className="fixed inset-0 z-50 flex items-center justify-center bg-black/80 backdrop-blur-sm p-4 animate-in fade-in duration-200"
                    onClick={() => setZoomedImage(null)}
                >
                    <div className="relative max-h-full max-w-full">
                        <img
                            src={zoomedImage}
                            alt="Zoomed screenshot"
                            className="max-h-[90vh] max-w-[90vw] rounded-lg shadow-2xl"
                        />
                        <Button
                            size="icon"
                            variant="secondary"
                            className="absolute -right-4 -top-4 rounded-full shadow-lg"
                            onClick={() => setZoomedImage(null)}
                        >
                            <X className="h-4 w-4" />
                        </Button>
                    </div>
                </div>
            )}
        </div>
    );
}