class WeatherWidget extends HTMLElement {
    constructor() {
        super();
        this.state = window.WeatherState;
        this.attachShadow({ mode: 'open' });
    }

    connectedCallback() {
        this.render();
        this.state.addListener(() => this.render());
        this.setupEventListeners();
    }

    setupEventListeners() {
        this.shadowRoot.addEventListener('click', (e) => {
            if (e.target.closest('[data-action="search"]')) {
                this.handleSearch();
            }
            if (e.target.closest('[data-action="refresh"]')) {
                window.loadCurrentLocationWeather();
            }
            if (e.target.closest('[data-action="location"]')) {
                this.toggleLocationSearch();
            }
        });

        this.shadowRoot.addEventListener('input', (e) => {
            if (e.target.name === 'location-search') {
                this.handleSearchInput(e.target.value);
            }
        });

        this.shadowRoot.addEventListener('keypress', (e) => {
            if (e.key === 'Enter' && e.target.name === 'location-search') {
                this.handleSearch();
            }
        });
    }

    handleSearchInput(value) {
        const searchBtn = this.shadowRoot.querySelector('[data-action="search"]');
        searchBtn.disabled = !value.trim();
    }

    handleSearch() {
        const input = this.shadowRoot.querySelector('[name="location-search"]');
        if (input.value.trim()) {
            window.searchLocation(input.value.trim());
            input.value = '';
            this.toggleLocationSearch();
        }
    }

    toggleLocationSearch() {
        const searchContainer = this.shadowRoot.querySelector('.location-search-container');
        searchContainer.classList.toggle('hidden');
        
        if (!searchContainer.classList.contains('hidden')) {
            const input = this.shadowRoot.querySelector('[name="location-search"]');
            input.focus();
        }
    }

    render() {
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    font-family: 'Inter', sans-serif;
                }

                .weather-card {
                    backdrop-filter: blur(10px);
                    background: rgba(255, 255, 255, 0.85);
                    border: 1px solid rgba(255, 255, 255, 0.2);
                    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
                }

                .weather-gradient {
                    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
                }

                .animate-pulse-soft {
                    animation: pulse-soft 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
                }

                .weather-icon {
                    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
                }

                .loading-dots {
                    display: inline-block;
                    position: relative;
                    width: 80px;
                    height: 80px;
                }

                .loading-dots div {
                    position: absolute;
                    top: 33px;
                    width: 13px;
                    height: 13px;
                    border-radius: 50%;
                    background: #0ea5e9;
                    animation-timing-function: cubic-bezier(0, 1, 1, 0);
                }

                .loading-dots div:nth-child(1) {
                    left: 8px;
                    animation: loading-dots1 0.6s infinite;
                }

                .loading-dots div:nth-child(2) {
                    left: 8px;
                    animation: loading-dots2 0.6s infinite;
                }

                .loading-dots div:nth-child(3) {
                    left: 32px;
                    animation: loading-dots2 0.6s infinite;
                }

                .loading-dots div:nth-child(4) {
                    left: 56px;
                    animation: loading-dots3 0.6s infinite;
                }

                @keyframes loading-dots1 {
                    0% { transform: scale(0); }
                    100% { transform: scale(1); }
                }

                @keyframes loading-dots3 {
                    0% { transform: scale(1); }
                    100% { transform: scale(0); }
                }

                @keyframes loading-dots2 {
                    0% { transform: translate(0, 0); }
                    100% { transform: translate(24px, 0); }
                }

                .slide-up {
                    animation: slideUp 0.3s ease-out;
                }

                @keyframes slideUp {
                    from {
                        opacity: 0;
                        transform: translateY(20px);
                    }
                    to {
                        opacity: 1;
                        transform: translateY(0);
                    }
                }

                @keyframes pulse-soft {
                    0%, 100% {
                        opacity: 1;
                    }
                    50% {
                        opacity: 0.8;
                    }
                }

                .glass-effect {
                    background: rgba(255, 255, 255, 0.25);
                    backdrop-filter: blur(10px);
                    border: 1px solid rgba(255, 255, 255, 0.18);
                }
            </style>

            <div class="min-h-screen flex items-center justify-center p-4">
                <div class="weather-card rounded-3xl p-6 max-w-md w-full mx-auto slide-up">
                    ${this.renderHeader()}
                    ${this.renderContent()}
                    ${this.renderForecast()}
                    ${this.renderDetails()}
                </div>
            </div>
        `;
        
        // Re-initialize feather icons
        if (window.feather) {
            setTimeout(() => window.feather.replace(), 0);
        }
    }

    renderHeader() {
        return `
            <div class="flex items-center justify-between mb-6">
                <div class="flex items-center space-x-3">
                    <button class="p-2 rounded-full glass-effect hover:bg-white/30 transition-all duration-200"
                    data-action="refresh"
                    ${this.state.loading ? 'disabled' : ''}>
                    <i data-feather="refresh-cw" class="w-4 h-4 text-primary-600"></i>
                </button>
                <div>
                    <h1 class="text-2xl font-bold text-gray-900">Weather</h1>
                    <p class="text-sm text-gray-600">${this.state.currentLocation}</p>
                </div>
                </div>
                <div class="flex items-center space-x-2">
                    <div class="location-search-container hidden absolute top-20 left-1/2 transform -translate-x-1/2 z-10 bg-white rounded-2xl shadow-xl p-4 w-80">
                        <div class="flex items-center space-x-2">
                            <input type="text" 
                                   name="location-search" 
                                   placeholder="Search location..." 
                                   class="flex-1 px-4 py-2 rounded-full border border-gray-200 focus:outline-none focus:ring-2 focus:ring-primary-500"
                                   autocomplete="off">
                        <button class="p-2 rounded-full bg-primary-500 text-white hover:bg-primary-600 transition-colors duration-200"
                                   data-action="search"
                                   disabled>
                            <i data-feather="search" class="w-4 h-4"></i>
                        </button>
                    </div>
                </div>
                <button class="p-2 rounded-full glass-effect hover:bg-white/30 transition-all duration-200"
                        data-action="location">
                    <i data-feather="map-pin" class="w-4 h-4 text-primary-600"></i>
                </button>
                </div>
            </div>
        `;
    }

    renderContent() {
        if (this.state.loading) {
            return this.renderLoading();
        }

        if (this.state.error) {
            return this.renderError();
        }

        if (!this.state.weatherData) {
            return this.renderEmpty();
        }

        const { current } = this.state.weatherData;
        const temp = window.WeatherUtils.kelvinToCelsius(current.temp);
        const feelsLike = window.WeatherUtils.kelvinToCelsius(current.feels_like);
        const icon = window.WeatherUtils.getWeatherIcon(current.weather[0].icon);

        return `
            <div class="text-center mb-8 slide-up">
                <div class="weather-gradient rounded-2xl p-8 mb-4">
                    <div class="flex items-center justify-center mb-4">
                        <i data-feather="${icon}" class="weather-icon w-16 h-16 text-white"></i>
                    </div>
                    <div class="text-white">
                        <div class="text-6xl font-bold mb-2">${temp}°</div>
                        <div class="text-lg opacity-90">${current.weather[0].description}</div>
                        <div class="text-sm opacity-80 mt-1">Feels like ${feelsLike}°</div>
                    </div>
                </div>
            </div>
        `;
    }

    renderForecast() {
        if (this.state.loading || this.state.error || !this.state.weatherData) {
            return '';
        }

        const { daily } = this.state.weatherData;
        const forecastDays = daily.slice(1, 6); // Next 5 days

        return `
            <div class="mb-6 slide-up">
                <h3 class="text-lg font-semibold text-gray-900 mb-4">5-Day Forecast</h3>
                <div class="grid grid-cols-5 gap-2">
                    ${forecastDays.map(day => {
                        const date = window.WeatherUtils.formatDate(day.dt);
                        const temp = window.WeatherUtils.kelvinToCelsius(day.temp.day);
                        const icon = window.WeatherUtils.getWeatherIcon(day.weather[0].icon);
                        return `
                            <div class="text-center p-2 rounded-xl hover:bg-gray-50 transition-colors duration-200">
                                <div class="text-sm font-medium text-gray-600 mb-1">${date}</div>
                                <i data-feather="${icon}" class="weather-icon w-6 h-6 text-primary-500 mx-auto mb-1"></i>
                            <div class="text-sm font-semibold text-gray-900">${temp}°</div>
                        </div>
                        `;
                    }).join('')}
                </div>
            </div>
        `;
    }

    renderDetails() {
        if (this.state.loading || this.state.error || !this.state.weatherData) {
            return '';
        }

        const { current } = this.state.weatherData;

        return `
            <div class="slide-up">
                <h3 class="text-lg font-semibold text-gray-900 mb-4">Details</h3>
                <div class="grid grid-cols-2 gap-4">
                    <div class="bg-gray-50 rounded-xl p-4">
                    <div class="flex items-center space-x-2 text-gray-600">
                        <i data-feather="wind" class="w-4 h-4"></i>
                    <span class="text-sm">Wind</span>
                    </div>
                    <div class="text-lg font-semibold text-gray-900">${current.wind_speed} m/s</div>
                </div>
                <div class="bg-gray-50 rounded-xl p-4">
                    <div class="flex items-center space-x-2 text-gray-600">
                        <i data-feather="droplet" class="w-4 h-4"></i>
                    <span class="text-sm">Humidity</span>
                    </div>
                    <div class="text-lg font-semibold text-gray-900">${current.humidity}%</div>
                </div>
                <div class="bg-gray-50 rounded-xl p-4">
                    <div class="flex items-center space-x-2 text-gray-600">
                        <i data-feather="thermometer" class="w-4 h-4"></i>
                    <span class="text-sm">Pressure</span>
                    </div>
                    <div class="text-lg font-semibold text-gray-900">${current.pressure} hPa</div>
                </div>
            </div>
        `;
    }

    renderLoading() {
        return `
            <div class="text-center py-12 slide-up">
                <div class="loading-dots inline-block">
                    <div></div>
                    <div></div>
                    <div></div>
                    <div></div>
                </div>
                <p class="text-gray-600 mt-4">Loading weather data...</p>
            </div>
        `;
    }

    renderError() {
        return `
            <div class="text-center py-12 slide-up">
                <i data-feather="alert-triangle" class="w-12 h-12 text-yellow-500 mx-auto mb-4"></i>
                <p class="text-gray-600">${this.state.error}</p>
                <button class="mt-4 px-6 py-2 bg-primary-500 text-white rounded-full hover:bg-primary-600 transition-colors duration-200"
                    onclick="window.loadCurrentLocationWeather()">
                    Try Again
                </button>
            </div>
        `;
    }

    renderEmpty() {
        return `
            <div class="text-center py-12 slide-up">
                <i data-feather="cloud" class="w-12 h-12 text-gray-400 mx-auto mb-4"></i>
                <p class="text-gray-600">No weather data available</p>
            </div>
        `;
    }
}

customElements.define('weather-widget', WeatherWidget);