import * as Checkbox from "@radix-ui/react-checkbox";
import * as Tabs from "@radix-ui/react-tabs";
import { generatePrivateKey, nip19 } from "nostr-tools";
import React, { useState, useCallback, useEffect } from "react";
import QRCode from "react-qr-code";
import browser from "webextension-polyfill";
import { removePermissions } from "./common";
import { LogoIcon } from "./icons";

function Options() {
	const [privKey, setPrivKey] = useState("");
	const [relays, setRelays] = useState([]);
	const [newRelayURL, setNewRelayURL] = useState("");
	const [policies, setPermissions] = useState([]);
	const [protocolHandler, setProtocolHandler] = useState(
		"https://njump.me/{raw}",
	);
	const [hidingPrivateKey, hidePrivateKey] = useState(true);
	const [showNotifications, setNotifications] = useState(false);
	const [messages, setMessages] = useState([]);
	const [handleNostrLinks, setHandleNostrLinks] = useState(false);
	const [showProtocolHandlerHelp, setShowProtocolHandlerHelp] = useState(false);
	const [unsavedChanges, setUnsavedChanges] = useState([]);

	const showMessage = useCallback((msg) => {
		messages.push(msg);
		setMessages(messages);
		setTimeout(() => setMessages([]), 3000);
	});

	useEffect(() => {
		browser.storage.local
			.get(["private_key", "relays", "protocol_handler", "notifications"])
			.then((results) => {
				if (results.private_key) {
					setPrivKey(nip19.nsecEncode(results.private_key));
				}
				if (results.relays) {
					const relaysList = [];
					for (const url in results.relays) {
						relaysList.push({
							url,
							policy: results.relays[url],
						});
					}
					setRelays(relaysList);
				}
				if (results.protocol_handler) {
					setProtocolHandler(results.protocol_handler);
					setHandleNostrLinks(true);
					setShowProtocolHandlerHelp(false);
				}
				if (results.notifications) {
					setNotifications(true);
				}
			});
	}, []);

	useEffect(() => {
		loadPermissions();
	}, []);

	async function loadPermissions() {
		const { policies = {} } = await browser.storage.local.get("policies");
		const list = [];

		// biome-ignore lint/complexity/noForEach: TODO: fix this
		Object.entries(policies).forEach(([host, accepts]) => {
			// biome-ignore lint/complexity/noForEach: TODO: fix this
			Object.entries(accepts).forEach(([accept, types]) => {
				// biome-ignore lint/complexity/noForEach: TODO: fix this
				Object.entries(types).forEach(([type, { conditions, created_at }]) => {
					list.push({
						host,
						type,
						accept,
						conditions,
						created_at,
					});
				});
			});
		});

		setPermissions(list);
	}

	return (
		<div className="w-screen h-screen flex flex-col items-center justify-center">
			<div className="p-8 shadow-primary border border-primary rounded-2xl max-w-xl mx-auto flex flex-col gap-4">
				<div className="flex items-center gap-4">
					<LogoIcon />
					<div>
						<h1 className="text-lg font-semibold">Nostr Connect</h1>
						<p className="text-sm text-muted font-medium">Nostr signer</p>
					</div>
				</div>
				<div className="flex flex-col">
					<div className="mb-4 flex flex-col gap-2">
						<div className="font-semibold text-base">Private key:</div>
						<div>
							<div className="flex gap-2">
								<input
									type={hidingPrivateKey ? "password" : "text"}
									value={privKey}
									onChange={handleKeyChange}
									className="flex-1 h-9 bg-transparent border border-primary px-3 py-1 rounded-lg"
								/>
								<div className="shrink-0">
									{!privKey && (
										<button
											type="button"
											onClick={generate}
											className="px-3 h-9 font-semibold border w-24 border-primary shadow-sm rounded-lg inline-flex items-center justify-center disabled:text-muted"
										>
											Generate
										</button>
									)}
									{privKey && hidingPrivateKey && (
										<button
											type="button"
											onClick={() => hidePrivateKey(false)}
											className="px-3 h-9 font-bold border w-24 border-primary shadow-sm rounded-lg inline-flex items-center justify-center disabled:text-muted"
										>
											Show key
										</button>
									)}
									{privKey && !hidingPrivateKey && (
										<button
											type="button"
											onClick={() => hidePrivateKey(true)}
											className="px-3 h-9 font-bold border w-24 border-primary shadow-sm rounded-lg inline-flex items-center justify-center disabled:text-muted"
										>
											Hide key
										</button>
									)}
								</div>
							</div>
							<div className="mt-1 text-sm">
								{privKey && !isKeyValid() ? (
									<p className="text-red-500">Private key is invalid!</p>
								) : (
									<p className="text-gray-500">
										Your key is stored locally. The developer has no way of
										seeing your keys.
									</p>
								)}
							</div>
							{!hidingPrivateKey && isKeyValid() && (
								<div className="mt-5 flex flex-col items-center">
									<QRCode
										size={256}
										value={privKey.toUpperCase()}
										viewBox="0 0 256 256"
										className="w-full max-w-full"
									/>
								</div>
							)}
						</div>
					</div>
					<Tabs.Root className="mb-4" defaultValue="relays">
						<Tabs.List className="mb-4 w-full border-b border-primary h-11 flex items-center gap-6">
							<Tabs.Trigger
								className="font-medium flex items-center text-muted gap-2 h-11 data-[state=active]:text-primary data-[state=active]:border-b data-[state=active]:border-secondary"
								value="relays"
							>
								Relays
								<span className="px-3 h-6 inline-flex items-center justify-center bg-muted data-[state=active]:text-primary rounded-full">
									{relays.length}
								</span>
							</Tabs.Trigger>
							<Tabs.Trigger
								className="font-medium flex items-center text-muted gap-2 h-11 data-[state=active]:text-primary data-[state=active]:border-b data-[state=active]:border-secondary"
								value="permissions"
							>
								Permissions
								<span className="px-3 h-6 inline-flex items-center justify-center bg-muted data-[state=active]:text-primary rounded-full">
									{policies.length}
								</span>
							</Tabs.Trigger>
						</Tabs.List>
						<Tabs.Content value="relays">
							<div className="flex flex-col gap-2">
								<div className="font-semibold text-base">Preferred Relays:</div>
								<div className="flex flex-col gap-2">
									{relays.map(({ url, policy }, i) => (
										<div key={url} className="flex items-center gap-4">
											<input
												value={url}
												onChange={changeRelayURL.bind(null, i)}
												className="flex-1 h-9 bg-transparent border px-3 py-1 border-primary rounded-lg placeholder:text-muted"
											/>
											<div className="flex items-center gap-2">
												<div className="inline-flex items-center gap-2">
													<Checkbox.Root
														id={`read-${i}`}
														checked={policy.read}
														onCheckedChange={toggleRelayPolicy.bind(
															null,
															i,
															"read",
														)}
														className="flex h-6 w-6 appearance-none items-center justify-center rounded-lg bg-white outline-none border border-primary data-[state=checked]:bg-primary data-[state=checked]:border-secondary"
													>
														<Checkbox.Indicator className="text-white">
															<svg
																xmlns="http://www.w3.org/2000/svg"
																fill="none"
																viewBox="0 0 24 24"
																strokeWidth={1.5}
																stroke="currentColor"
																className="w-4 h-4"
															>
																<path
																	strokeLinecap="round"
																	strokeLinejoin="round"
																	d="M4.5 12.75l6 6 9-13.5"
																/>
															</svg>
														</Checkbox.Indicator>
													</Checkbox.Root>
													<label
														htmlFor={`read-${i}`}
														className="text-muted font-medium"
													>
														Read
													</label>
												</div>
												<div className="inline-flex items-center gap-2">
													<Checkbox.Root
														id={`write-${i}`}
														checked={policy.write}
														onCheckedChange={toggleRelayPolicy.bind(
															null,
															i,
															"write",
														)}
														className="flex h-6 w-6 appearance-none items-center justify-center rounded-lg bg-white outline-none border border-primary data-[state=checked]:bg-primary data-[state=checked]:border-secondary"
													>
														<Checkbox.Indicator className="text-white">
															<svg
																xmlns="http://www.w3.org/2000/svg"
																fill="none"
																viewBox="0 0 24 24"
																strokeWidth={1.5}
																stroke="currentColor"
																className="w-4 h-4"
															>
																<path
																	strokeLinecap="round"
																	strokeLinejoin="round"
																	d="M4.5 12.75l6 6 9-13.5"
																/>
															</svg>
														</Checkbox.Indicator>
													</Checkbox.Root>
													<label
														htmlFor={`write-${i}`}
														className="text-muted font-medium"
													>
														Write
													</label>
												</div>
											</div>
											<button
												type="button"
												onClick={removeRelay.bind(null, i)}
												className="shrink-0 px-3 w-24 h-9 font-semibold border border-primary shadow-sm rounded-lg inline-flex items-center justify-center disabled:text-muted"
											>
												Remove
											</button>
										</div>
									))}
									<div className="flex gap-2">
										<input
											value={newRelayURL}
											onChange={(e) => setNewRelayURL(e.target.value)}
											onKeyDown={(e) => {
												if (e.key === "Enter") addNewRelay();
											}}
											placeholder="wss://"
											className="flex-1 h-9 bg-transparent border px-3 py-1 border-primary rounded-lg placeholder:text-muted"
										/>
										<button
											type="button"
											disabled={!newRelayURL}
											onClick={addNewRelay}
											className="shrink-0 px-3 w-24 h-9 font-semibold border border-primary shadow-sm rounded-lg inline-flex items-center justify-center disabled:text-muted"
										>
											Add Relay
										</button>
									</div>
								</div>
							</div>
						</Tabs.Content>
						<Tabs.Content value="permissions">
							<div className="flex flex-col gap-2">
								<div className="font-semibold text-base">Permissions:</div>
								{!policies.length ? (
									<div className="text-muted">
										You haven't granted any permissions to any apps yet
									</div>
								) : (
									<table className="table-auto">
										<thead>
											<tr className="mb-2">
												<th className="text-left border-b-8 border-transparent">
													Domain
												</th>
												<th className="text-left border-b-8 border-transparent">
													Permission
												</th>
												<th className="text-left border-b-8 border-transparent">
													Answer
												</th>
												<th className="text-left border-b-8 border-transparent">
													Conditions
												</th>
												<th className="text-left border-b-8 border-transparent">
													Since
												</th>
												<th />
											</tr>
										</thead>
										<tbody>
											{policies.map(
												({ host, type, accept, conditions, created_at }) => (
													<tr
														key={
															host + type + accept + JSON.stringify(conditions)
														}
													>
														<td className="font-semibold">{host}</td>
														<td className="text-muted">{type}</td>
														<td className="text-muted">
															{accept === "true" ? "allow" : "deny"}
														</td>
														<td className="text-muted">
															{conditions.kinds
																? `kinds: ${Object.keys(conditions.kinds).join(
																		", ",
																	)}`
																: "always"}
														</td>
														<td className="text-muted">
															{new Date(created_at * 1000)
																.toISOString()
																.split(".")[0]
																.split("T")
																.join(" ")}
														</td>
														<td>
															<button
																type="button"
																onClick={handleRevoke}
																data-host={host}
																data-accept={accept}
																data-type={type}
																className="text-primary font-semibold"
															>
																Revoke
															</button>
														</td>
													</tr>
												),
											)}
											{!policies.length && (
												<tr>
													{Array(5)
														.fill("N/A")
														.map((v) => (
															<td key={v}>{v}</td>
														))}
												</tr>
											)}
										</tbody>
									</table>
								)}
							</div>
						</Tabs.Content>
					</Tabs.Root>
					<div className="mb-3">
						<div className="flex items-center gap-2">
							<Checkbox.Root
								id="notification"
								className="flex h-6 w-6 appearance-none items-center justify-center rounded-lg bg-white outline-none border border-primary data-[state=checked]:bg-primary data-[state=checked]:border-secondary"
								checked={showNotifications}
								onCheckedChange={handleNotifications}
							>
								<Checkbox.Indicator className="text-white">
									<svg
										xmlns="http://www.w3.org/2000/svg"
										fill="none"
										viewBox="0 0 24 24"
										strokeWidth={1.5}
										stroke="currentColor"
										className="w-4 h-4"
									>
										<path
											strokeLinecap="round"
											strokeLinejoin="round"
											d="M4.5 12.75l6 6 9-13.5"
										/>
									</svg>
								</Checkbox.Indicator>
							</Checkbox.Root>
							<label htmlFor="notification">
								Show desktop notifications when a permissions has been used
							</label>
						</div>
					</div>
					<div>
						<details>
							<summary className="flex items-center justify-between">
								<div className="font-semibold text-base">Advanced</div>
								<div>
									<svg
										xmlns="http://www.w3.org/2000/svg"
										fill="none"
										viewBox="0 0 24 24"
										strokeWidth={1.5}
										stroke="currentColor"
										className="w-5 h-5"
									>
										<path
											strokeLinecap="round"
											strokeLinejoin="round"
											d="M19.5 8.25l-7.5 7.5-7.5-7.5"
										/>
									</svg>
								</div>
							</summary>
							<div className="mt-3">
								<div className="flex items-center gap-2">
									<Checkbox.Root
										id="nostrlink"
										className="flex h-6 w-6 appearance-none items-center justify-center rounded-lg bg-white outline-none border border-primary data-[state=checked]:bg-primary data-[state=checked]:border-secondary"
										checked={handleNostrLinks}
										onCheckedChange={changeHandleNostrLinks}
									>
										<Checkbox.Indicator className="text-white">
											<svg
												xmlns="http://www.w3.org/2000/svg"
												fill="none"
												viewBox="0 0 24 24"
												strokeWidth={1.5}
												stroke="currentColor"
												className="w-4 h-4"
											>
												<path
													strokeLinecap="round"
													strokeLinejoin="round"
													d="M4.5 12.75l6 6 9-13.5"
												/>
											</svg>
										</Checkbox.Indicator>
									</Checkbox.Root>
									<label htmlFor="nostrlink">Handle nostr links</label>
								</div>
								{handleNostrLinks && (
									<div className="mt-3">
										<div className="flex">
											<input
												placeholder="url template"
												value={protocolHandler}
												onChange={handleChangeProtocolHandler}
											/>
											{!showProtocolHandlerHelp && (
												<button
													type="button"
													onClick={changeShowProtocolHandlerHelp}
												>
													?
												</button>
											)}
										</div>
										{showProtocolHandlerHelp && (
											<pre className="bg-muted px-2 rounded-xl overflow-scroll">{`
{raw} = anything after the colon, i.e. the full nip19 bech32 string
{hex} = hex pubkey for npub or nprofile, hex event id for note or nevent
{p_or_e} = "p" for npub or nprofile, "e" for note or nevent
{u_or_n} = "u" for npub or nprofile, "n" for note or nevent
{relay0} = first relay in a nprofile or nevent
{relay1} = second relay in a nprofile or nevent
{relay2} = third relay in a nprofile or nevent
{hrp} = human-readable prefix of the nip19 string

examples:
  - https://njump.me/{raw}
  - https://snort.social/{raw}
  - https://nostr.band/{raw}
                `}</pre>
										)}
									</div>
								)}
							</div>
						</details>
					</div>
				</div>
				<button
					type="button"
					disabled={!unsavedChanges.length}
					onClick={saveChanges}
					className="w-full h-10 bg-primary rounded-xl font-bold inline-flex items-center justify-center text-white disabled:cursor-not-allowed disabled:opacity-70 transform active:translate-y-1 transition-transform ease-in-out duration-75"
				>
					Save
				</button>
			</div>
		</div>
	);

	async function handleKeyChange(e) {
		const key = e.target.value.toLowerCase().trim();
		setPrivKey(key);
		addUnsavedChanges("private_key");
	}

	async function generate() {
		setPrivKey(nip19.nsecEncode(generatePrivateKey()));
		addUnsavedChanges("private_key");
	}

	async function saveKey() {
		if (!isKeyValid()) {
			showMessage("PRIVATE KEY IS INVALID! did not save private key.");
			return;
		}

		let hexOrEmptyKey = privKey;

		try {
			const { type, data } = nip19.decode(privKey);
			if (type === "nsec") hexOrEmptyKey = data;
		} catch (_) {}

		await browser.storage.local.set({
			private_key: hexOrEmptyKey,
		});

		if (hexOrEmptyKey !== "") {
			setPrivKey(nip19.nsecEncode(hexOrEmptyKey));
		}

		showMessage("saved private key!");
	}

	function isKeyValid() {
		if (privKey === "") return true;
		if (privKey.match(/^[a-f0-9]{64}$/)) return true;
		try {
			if (nip19.decode(privKey).type === "nsec") return true;
		} catch (_) {}
		return false;
	}

	function changeRelayURL(i, ev) {
		setRelays([
			...relays.slice(0, i),
			{ url: ev.target.value, policy: relays[i].policy },
			...relays.slice(i + 1),
		]);
		addUnsavedChanges("relays");
	}

	function toggleRelayPolicy(i, cat) {
		setRelays([
			...relays.slice(0, i),
			{
				url: relays[i].url,
				policy: { ...relays[i].policy, [cat]: !relays[i].policy[cat] },
			},
			...relays.slice(i + 1),
		]);
		addUnsavedChanges("relays");
	}

	function removeRelay(i) {
		setRelays([...relays.slice(0, i), ...relays.slice(i + 1)]);
		addUnsavedChanges("relays");
	}

	function addNewRelay() {
		if (newRelayURL.trim() === "") return;
		if (!newRelayURL.startsWith("wss://")) return;
		relays.push({
			url: newRelayURL,
			policy: { read: true, write: true },
		});
		setRelays(relays);
		addUnsavedChanges("relays");
		setNewRelayURL("");
	}

	async function handleRevoke(e) {
		const { host, accept, type } = e.target.dataset;
		if (
			window.confirm(
				`revoke all ${
					accept === "true" ? "accept" : "deny"
				} ${type} policies from ${host}?`,
			)
		) {
			await removePermissions(host, accept, type);
			showMessage("removed policies");
			loadPermissions();
		}
	}

	function handleNotifications() {
		setNotifications(!showNotifications);
		addUnsavedChanges("notifications");
		if (!showNotifications) requestBrowserNotificationPermissions();
	}

	async function requestBrowserNotificationPermissions() {
		const granted = await browser.permissions.request({
			permissions: ["notifications"],
		});
		if (!granted) setNotifications(false);
	}

	async function saveNotifications() {
		await browser.storage.local.set({ notifications: showNotifications });
		showMessage("saved notifications!");
	}

	async function saveRelays() {
		await browser.storage.local.set({
			relays: Object.fromEntries(
				relays
					.filter(({ url }) => url.trim() !== "")
					.map(({ url, policy }) => [url.trim(), policy]),
			),
		});
		showMessage("saved relays!");
	}

	function changeShowProtocolHandlerHelp() {
		setShowProtocolHandlerHelp(true);
	}

	function changeHandleNostrLinks() {
		if (handleNostrLinks) {
			setProtocolHandler("");
			addUnsavedChanges("protocol_handler");
		} else setShowProtocolHandlerHelp(true);
		setHandleNostrLinks(!handleNostrLinks);
	}

	function handleChangeProtocolHandler(e) {
		setProtocolHandler(e.target.value);
		addUnsavedChanges("protocol_handler");
	}

	async function saveNostrProtocolHandlerSettings() {
		await browser.storage.local.set({ protocol_handler: protocolHandler });
		showMessage("saved protocol handler!");
	}

	function addUnsavedChanges(section) {
		if (!unsavedChanges.find((s) => s === section)) {
			unsavedChanges.push(section);
			setUnsavedChanges(unsavedChanges);
		}
	}

	async function saveChanges() {
		for (const section of unsavedChanges) {
			switch (section) {
				case "private_key":
					await saveKey();
					break;
				case "relays":
					await saveRelays();
					break;
				case "protocol_handler":
					await saveNostrProtocolHandlerSettings();
					break;
				case "notifications":
					await saveNotifications();
					break;
			}
		}
		setUnsavedChanges([]);
	}
}

const container = document.getElementById("main");
const root = createRoot(container);

root.render(<Options />);