import icon from "data-base64:~assets/icon.png";
import { Storage } from "@plasmohq/storage";
import { ReloadIcon } from "@radix-ui/react-icons";
import { useState } from "react";
import { useNavigate } from "react-router-dom";
import { Button } from "~/routes/ui/button";
import { ConnectionSettingsButton } from "~/routes/ui/connection-settings-button";
import { buildBackendUrl } from "~utils/backend-url";

const ApiKeyForm = () => {
	const navigation = useNavigate();
	const [apiKey, setApiKey] = useState("");
	const [error, setError] = useState("");
	const [loading, setLoading] = useState(false);
	const storage = new Storage({ area: "local" });

	const validateForm = () => {
		if (!apiKey) {
			setError("Personal access token is required");
			return false;
		}
		setError("");
		return true;
	};

	const handleSubmit = async (event: { preventDefault: () => void }) => {
		event.preventDefault();
		if (!validateForm()) return;
		setLoading(true);

		try {
			const response = await fetch(await buildBackendUrl("/verify-token"), {
				method: "GET",
				headers: {
					Authorization: `Bearer ${apiKey}`,
				},
			});

			setLoading(false);

			if (response.ok) {
				// Store the PAT as the bearer token for existing background handlers.
				await storage.set("token", apiKey);
				navigation("/");
			} else {
				setError("Invalid personal access token. Please check and try again.");
			}
		} catch (error) {
			setLoading(false);
			setError("An error occurred. Please try again later.");
		}
	};

	return (
		<div className="min-h-screen bg-gradient-to-br from-gray-900 to-gray-800 flex flex-col items-center justify-center p-6">
			<div className="w-full max-w-md mx-auto space-y-8">
				<div className="flex justify-end">
					<ConnectionSettingsButton />
				</div>

				<div className="flex flex-col items-center space-y-2">
					<div className="bg-gray-800 p-3 rounded-full ring-2 ring-gray-700 shadow-lg">
						<img className="w-12 h-12" src={icon} alt="SurfSense" />
					</div>
					<h1 className="text-3xl font-semibold tracking-tight text-white mt-4">SurfSense</h1>
				</div>

				<div className="bg-gray-800/70 backdrop-blur-sm rounded-xl shadow-xl border border-gray-700 p-6">
					<div className="space-y-6">
						<h2 className="text-xl font-medium text-white">Enter your personal access token</h2>
						<p className="text-gray-400 text-sm">
							Your personal access token connects this extension to SurfSense.
						</p>

						<form onSubmit={handleSubmit} className="space-y-4">
							<div className="space-y-2">
								<label htmlFor="apiKey" className="text-sm font-medium text-gray-300">
									Personal access token
								</label>
								<input
									type="text"
									id="apiKey"
									value={apiKey}
									onChange={(e) => setApiKey(e.target.value)}
									className="w-full px-3 py-2 bg-gray-900/50 border border-gray-700 rounded-md focus:outline-none focus:ring-2 focus:ring-teal-500 text-white placeholder:text-gray-500"
									placeholder="Enter your personal access token"
								/>
								{error && <p className="text-red-400 text-sm mt-1">{error}</p>}
							</div>

							<Button
								type="submit"
								disabled={loading}
								className="w-full bg-teal-600 hover:bg-teal-500 text-white py-2 px-4 rounded-md transition-colors"
							>
								{loading ? (
									<>
										<ReloadIcon className="mr-2 h-4 w-4 animate-spin" />
										Verifying...
									</>
								) : (
									"Connect"
								)}
							</Button>
						</form>

						<div className="text-center mt-4">
							<p className="text-sm text-gray-400">
								Need a personal access token?{" "}
								<a
									href="https://www.surfsense.com"
									target="_blank"
									className="text-teal-400 hover:text-teal-300 hover:underline"
									rel="noopener"
								>
									Sign up
								</a>
							</p>
						</div>
					</div>
				</div>
			</div>
		</div>
	);
};

export default ApiKeyForm;