import { t, i18n } from '../../i18n.js';
import { router } from '../../router.js';
import '../search-box.js';
import '../listing-card.js';

class PageSearch extends HTMLElement {
    constructor() {
        super();
        this.results = [];
        this.loading = false;
    }

    connectedCallback() {
        this.parseUrlParams();
        this.render();
        this.afterRender();
        this.unsubscribe = i18n.subscribe(() => {
            this.render();
            this.afterRender();
        });
        
        if (this.hasFilters()) {
            this.performSearch();
        }
    }

    disconnectedCallback() {
        if (this.unsubscribe) this.unsubscribe();
    }

    parseUrlParams() {
        const params = new URLSearchParams(window.location.hash.split('?')[1] || '');
        this.query = params.get('q') || '';
        this.category = params.get('category') || '';
        this.subcategory = params.get('sub') || '';
        this.country = params.get('country') || 'ch';
        this.useCurrentLocation = params.get('location') === 'current';
        this.radius = parseInt(params.get('radius')) || 50;
        this.lat = params.get('lat') ? parseFloat(params.get('lat')) : null;
        this.lng = params.get('lng') ? parseFloat(params.get('lng')) : null;
    }

    hasFilters() {
        return this.query || this.category || this.subcategory;
    }

    afterRender() {
        const searchBox = this.querySelector('search-box');
        if (searchBox) {
            searchBox.setFilters({
                query: this.query,
                category: this.category,
                subcategory: this.subcategory,
                country: this.country,
                useCurrentLocation: this.useCurrentLocation,
                radius: this.radius
            });
            
            searchBox.addEventListener('search', (e) => {
                this.handleSearch(e.detail);
            });
        }
    }

    handleSearch(filters) {
        this.query = filters.query;
        this.category = filters.category;
        this.subcategory = filters.subcategory;
        this.country = filters.country;
        this.useCurrentLocation = filters.useCurrentLocation;
        this.radius = filters.radius;
        this.lat = filters.lat;
        this.lng = filters.lng;
        
        this.performSearch();
    }

    render() {
        this.innerHTML = /* html */ `
            <div class="search-page">
                <section class="search-header">
                    <search-box compact no-navigate></search-box>
                </section>
                
                <section class="search-results" id="results">
                    ${this.renderResults()}
                </section>
            </div>
        `;
    }

    async performSearch() {
        this.loading = true;
        this.updateResults();
        
        await new Promise(resolve => setTimeout(resolve, 500));
        
        this.results = this.getMockResults();
        this.loading = false;
        this.updateResults();
    }

    getMockResults() {
        return [
            { id: 1, title: 'iPhone 13 Pro', price: 699, location: 'Berlin' },
            { id: 2, title: 'Vintage Sofa', price: 250, location: 'München' },
            { id: 3, title: 'Mountain Bike', price: 450, location: 'Hamburg' },
            { id: 4, title: 'Gaming PC', price: 1200, location: 'Köln' },
            { id: 5, title: 'Schreibtisch', price: 80, location: 'Zürich' },
            { id: 6, title: 'Winterjacke', price: 45, location: 'Wien' },
        ];
    }

    updateResults() {
        const resultsContainer = this.querySelector('#results');
        if (resultsContainer) {
            resultsContainer.innerHTML = this.renderResults();
        }
    }

    renderResults() {
        if (this.loading) {
            return /* html */ `
                <div class="loading">
                    <div class="spinner"></div>
                    <p>${t('search.loading')}</p>
                </div>
            `;
        }

        if (!this.hasFilters() && this.results.length === 0) {
            return /* html */ `
                <div class="empty-state">
                    <div class="empty-state-icon">🔍</div>
                    <p>${t('search.enterQuery')}</p>
                </div>
            `;
        }

        if (this.results.length === 0) {
            return /* html */ `
                <div class="empty-state">
                    <div class="empty-state-icon">😕</div>
                    <p>${t('search.noResults')}</p>
                </div>
            `;
        }

        return /* html */ `
            <p class="results-count">${t('search.resultsCount', { count: this.results.length })}</p>
            <div class="listings-grid">
                ${this.results.map(item => /* html */ `
                    <listing-card 
                        listing-id="${item.id}"
                        title="${this.escapeHtml(item.title)}"
                        price="${item.price}"
                        location="${this.escapeHtml(item.location)}"
                    ></listing-card>
                `).join('')}
            </div>
        `;
    }

    escapeHtml(text) {
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }
}

customElements.define('page-search', PageSearch);

const style = document.createElement('style');
style.textContent = /* css */ `
    page-search .search-page {
        padding: var(--space-lg) 0;
    }
    
    page-search .search-header {
        margin-bottom: var(--space-xl);
    }
    
    page-search .results-count {
        color: var(--color-text-muted);
        margin-bottom: var(--space-md);
    }
    
    page-search .listings-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    @media (min-width: 768px) {
        page-search .listings-grid {
            grid-template-columns: repeat(4, 1fr);
        }
    }
    
    page-search .loading {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: var(--space-2xl);
        color: var(--color-text-muted);
    }
    
    page-search .spinner {
        width: 40px;
        height: 40px;
        border: 3px solid var(--color-border);
        border-top-color: var(--color-primary);
        border-radius: 50%;
        animation: spin 1s linear infinite;
        margin-bottom: var(--space-md);
    }
    
    @keyframes spin {
        to { transform: rotate(360deg); }
    }
    
    page-search .empty-state {
        text-align: center;
        padding: var(--space-2xl);
        color: var(--color-text-muted);
    }
    
    page-search .empty-state-icon {
        font-size: 3rem;
        margin-bottom: var(--space-md);
    }
`;
document.head.appendChild(style);