import { services } from "@/config/services";
import {
	getServiceIconPath,
	getServiceUrl,
	searchServices,
} from "@/utils/service";

export class ServiceSearch {
	private isOpen = false;
	private query = "";
	private results: typeof services = [];
	private selectedIndex = 0;
	private container: HTMLDivElement | null = null;
	private searchButton: HTMLButtonElement | null = null;

	constructor() {
		this.init();
	}

	private init() {
		// Create search button
		this.searchButton = document.createElement("button");
		this.searchButton.className =
			"fixed bottom-4 right-4 md:hidden bg-primary text-primary-foreground p-3 rounded-full shadow-lg z-40";
		this.searchButton.innerHTML = `
			<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
				<circle cx="11" cy="11" r="8"></circle>
				<path d="m21 21-4.3-4.3"></path>
			</svg>
		`;
		this.searchButton.addEventListener("click", () => this.open());
		document.body.appendChild(this.searchButton);

		// Create container
		this.container = document.createElement("div");
		this.container.className =
			"fixed inset-0 bg-black/50 flex items-start justify-center pt-[10vh] md:pt-[20vh] z-50 hidden";
		this.container.innerHTML = `
			<div class="w-full max-w-2xl mx-4">
				<div class="bg-background rounded-lg shadow-lg">
					<div class="p-4 flex items-center gap-2">
						<input
							type="text"
							placeholder="Search services... (Press Esc to close)"
							class="w-full px-4 py-2 bg-muted rounded-md focus:outline-none focus:ring-2 focus:ring-ring text-base"
						/>
						<button class="p-2 text-muted-foreground hover:text-foreground transition-colors" aria-label="Close search">
							<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
								<path d="M18 6 6 18"></path>
								<path d="m6 6 12 12"></path>
							</svg>
						</button>
					</div>
					<div class="max-h-[70vh] md:max-h-[60vh] overflow-y-auto"></div>
				</div>
			</div>
		`;

		document.body.appendChild(this.container);

		// Get elements
		const input = this.container.querySelector("input");
		const resultsContainer = this.container.querySelector(".max-h-\\[70vh\\]");
		const closeButton = this.container.querySelector("button");

		if (!input || !resultsContainer || !closeButton) return;

		// Add event listeners
		input.addEventListener("input", (e) => {
			this.query = (e.target as HTMLInputElement).value;
			this.updateResults();
		});

		closeButton.addEventListener("click", () => this.close());

		document.addEventListener("keydown", this.handleKeyDown.bind(this));
	}

	private handleKeyDown(e: KeyboardEvent) {
		// Open search with Ctrl+K or Cmd+K
		if ((e.ctrlKey || e.metaKey) && e.key === "k") {
			e.preventDefault();
			this.open();
		}

		// Close search with Escape
		if (e.key === "Escape") {
			this.close();
		}

		// Navigate results with arrow keys
		if (this.isOpen) {
			if (e.key === "ArrowDown") {
				e.preventDefault();
				this.selectedIndex = Math.min(
					this.selectedIndex + 1,
					this.results.length - 1,
				);
				this.updateResults();
			} else if (e.key === "ArrowUp") {
				e.preventDefault();
				this.selectedIndex = Math.max(this.selectedIndex - 1, 0);
				this.updateResults();
			} else if (e.key === "Enter" && this.results[this.selectedIndex]) {
				e.preventDefault();
				const service = this.results[this.selectedIndex];
				window.open(getServiceUrl(service), "_blank");
				this.close();
			}
		}
	}

	private updateResults() {
		if (!this.container) return;

		const resultsContainer = this.container.querySelector(".max-h-\\[70vh\\]");
		if (!resultsContainer) return;

		if (this.query.trim()) {
			this.results = searchServices(services, this.query);
		} else {
			this.results = [];
		}

		if (this.results.length > 0) {
			resultsContainer.innerHTML = this.results
				.map(
					(service, index) => `
						<button
							type="button"
							class="w-full px-4 py-4 text-left hover:bg-accent hover:text-accent-foreground transition-colors text-base flex items-center gap-3 ${
								index === this.selectedIndex
									? "bg-accent text-accent-foreground"
									: ""
							}"
						>
							<div class="flex-shrink-0 w-8 h-8">
								<img
									src="${getServiceIconPath(service)}"
									alt=""
									class="w-full h-full"
									width="32"
									height="32"
									loading="lazy"
								/>
							</div>
							<span>${service.serviceName}</span>
						</button>
					`,
				)
				.join("");

			// Add click handlers
			resultsContainer.querySelectorAll("button").forEach((button, index) => {
				button.addEventListener("click", () => {
					const service = this.results[index];
					window.open(getServiceUrl(service), "_blank");
					this.close();
				});
			});
		} else if (this.query) {
			resultsContainer.innerHTML = `
				<div class="px-4 py-4 text-muted-foreground text-base">
					No services found
				</div>
			`;
		} else {
			resultsContainer.innerHTML = "";
		}
	}

	private open() {
		if (!this.container) return;
		this.isOpen = true;
		this.container.classList.remove("hidden");
		const input = this.container.querySelector("input");
		if (input) {
			input.value = "";
			input.focus();
		}
		this.query = "";
		this.results = [];
		this.selectedIndex = 0;
		this.updateResults();
	}

	private close() {
		if (!this.container) return;
		this.isOpen = false;
		this.container.classList.add("hidden");
	}
}