import { api, protectedFetch } from "./api.js?v=__ASSET_VERSION__";
import { initSideNav, loadNavUser } from "./nav.js?v=__ASSET_VERSION__";
import { showToast } from "./toast.js?v=__ASSET_VERSION__";
import {
	BREW_CATEGORIES,
	BREW_METHODS,
	BREW_SILHOUETTES,
} from "/shared/brew-data.js?v=__ASSET_VERSION__";

const SVG_NS = "http://www.w3.org/2000/svg";
let gear = { brewers: [], grinders: [] };
let saveTimer = null;
// Never save over the server until we've successfully read its state: the PUT replaces both
// arrays wholesale, so saving after a failed load would wipe the user's stored equipment.
let loaded = false;

function silhouetteSvg(methodKey) {
	const svg = document.createElementNS(SVG_NS, "svg");
	svg.setAttribute("viewBox", "0 0 64 64");
	svg.setAttribute("width", 42);
	svg.setAttribute("height", 42);
	svg.setAttribute("aria-hidden", "true");
	for (const d of BREW_SILHOUETTES[methodKey] ?? []) {
		const path = document.createElementNS(SVG_NS, "path");
		path.setAttribute("d", d);
		path.setAttribute("fill", "currentColor");
		svg.append(path);
	}
	return svg;
}

// Saves shortly after the last toggle rather than needing a Save button — an equipment page
// is set-and-forget, so every change should just stick.
function scheduleSave() {
	if (!loaded) {
		showToast("Equipment didn't load — reload the page before making changes.", "fail");
		return;
	}
	clearTimeout(saveTimer);
	saveTimer = setTimeout(async () => {
		try {
			const body = await api("/api/gear", {
				method: "PUT",
				body: JSON.stringify(gear),
			});
			gear = body.gear;
			showToast("Equipment saved.");
		} catch (error) {
			showToast(error.message, "fail");
		}
	}, 500);
}

function renderCount() {
	document.getElementById("brewers-count").textContent = gear.brewers.length
		? `${gear.brewers.length} selected`
		: "none selected — Brews shows all";
}

function renderBrewerPicker() {
	const mount = document.getElementById("gear-brewer-picker");
	mount.replaceChildren();
	for (const category of BREW_CATEGORIES) {
		const title = document.createElement("div");
		title.className = "brewer-cat-title";
		title.textContent = category.name;
		mount.append(title);
		const grid = document.createElement("div");
		grid.className = "brewer-grid";
		for (const method of BREW_METHODS.filter((m) => m.category === category.key)) {
			const tile = document.createElement("button");
			tile.type = "button";
			tile.className = "brewer-tile";
			const owned = () => gear.brewers.includes(method.key);
			tile.classList.toggle("selected", owned());
			tile.setAttribute("aria-pressed", String(owned()));
			tile.append(silhouetteSvg(method.key));
			const name = document.createElement("span");
			name.className = "brewer-name";
			name.textContent = method.name;
			tile.append(name);
			tile.addEventListener("click", () => {
				gear.brewers = owned()
					? gear.brewers.filter((k) => k !== method.key)
					: [...gear.brewers, method.key];
				tile.classList.toggle("selected", owned());
				tile.setAttribute("aria-pressed", String(owned()));
				renderCount();
				scheduleSave();
			});
			grid.append(tile);
		}
		mount.append(grid);
	}
	renderCount();
}

function renderGrinders() {
	const list = document.getElementById("grinder-list");
	if (!gear.grinders.length) {
		list.replaceChildren(
			Object.assign(document.createElement("li"), {
				textContent: "No grinders yet.",
				className: "muted",
			}),
		);
		return;
	}
	list.replaceChildren(
		...gear.grinders.map((grinder) => {
			const li = document.createElement("li");
			li.style.display = "flex";
			li.style.alignItems = "center";
			li.style.gap = "10px";
			const name = document.createElement("span");
			name.textContent = grinder;
			const remove = document.createElement("button");
			remove.className = "ghost-btn small";
			remove.type = "button";
			remove.textContent = "Remove";
			remove.addEventListener("click", () => {
				gear.grinders = gear.grinders.filter((g) => g !== grinder);
				renderGrinders();
				scheduleSave();
			});
			li.append(name, remove);
			return li;
		}),
	);
}

document.getElementById("grinder-form").addEventListener("submit", (event) => {
	event.preventDefault();
	const input = document.getElementById("grinder-name");
	const name = input.value.trim();
	if (!name) return;
	if (!gear.grinders.includes(name)) gear.grinders = [...gear.grinders, name];
	input.value = "";
	renderGrinders();
	scheduleSave();
});

document.getElementById("btn-logout").addEventListener("click", async () => {
	await protectedFetch("/api/auth/logout", { method: "POST" });
	location.assign("/");
});

async function init() {
	initSideNav();
	const user = await loadNavUser();
	if (!user) return;
	try {
		gear = (await api("/api/gear")).gear;
		loaded = true;
	} catch {
		showToast("Could not load equipment.", "fail");
	}
	renderBrewerPicker();
	renderGrinders();
}

init();