<script lang="ts" module>
export let menu_is_open = writable(true)
</script>
<script lang="ts">
import { highlight_current_page } from "lib/HighlightCurrentPage";
import { user } from "lib/UserStore";
import Euro from "util/Euro.svelte";
import { formatDataVolume } from "util/Formatting";
import Router from "wrap/Router.svelte";
import Bookmarks from "./Bookmarks.svelte";
import { onMount } from "svelte";
import { fs_get_node } from "lib/FilesystemAPI.svelte";
import { css_from_path } from "filesystem/edit_window/Branding";
import { loading_run, loading_store } from "lib/Loading";
import Spinner from "util/Spinner.svelte";
import { get_user } from "lib/PixeldrainAPI";
import Tree from "./Tree.svelte";
import MenuEntry from "./MenuEntry.svelte";
import { writable } from "svelte/store";

onMount(() => {
	if (document.documentElement.clientWidth < 1000) {
		menu_close()
	}

	loading_run(async () => {
		const user = await get_user()
		if (user.username === undefined || user.username === "") {
			return
		}
		const root = await fs_get_node("/me")
		document.documentElement.style = css_from_path(root.path)
	})
})

// Dead zone before the swipe action gets detected
const swipe_initial_offset = 50
const min_screen_size_fullscreen_menu = 500

let menu: HTMLDivElement
let nav: HTMLElement
let dragging: boolean = false
let start_x: number
let render_offset: number
let initial_offset: number
const touchstart = (e: TouchEvent) => {
	start_x = e.touches[0].clientX
	const rect = menu.getBoundingClientRect()
	if (start_x < Math.max(swipe_initial_offset, (rect.width+rect.left))) {
		dragging = true
	}

	render_offset = rect.left
	initial_offset = rect.left
}

const touchmove = (e: TouchEvent) => {
	if (!dragging) {
		return
	}
	set_offset(initial_offset+(e.touches[0].clientX - start_x))
}

const touchend = (e: TouchEvent) => {
	if (!dragging) {
		return
	}
	dragging = false

	const menu_width = menu.getBoundingClientRect().width
	if (render_offset > -(menu_width/2)) {
		menu_open()
	} else {
		menu_close()
	}
}

const toggle_menu = (e: MouseEvent) => {
	if (menu.style.transform === "") {
		menu_close()
	} else {
		menu_open()
	}
}
const menu_open = () => {
	set_offset(0)
	menu_is_open.set(true)
	if (document.documentElement.clientWidth < min_screen_size_fullscreen_menu) {
		menu.style.position = "fixed"
		menu.style.width = "100%"
		nav.style.width = "100%"
		nav.style.maxWidth = "100%"
	} else {
		menu.style.position = "relative"
		menu.style.width = ""
		nav.style.width = ""
		nav.style.maxWidth = ""
	}
}
const menu_close = () => {
	set_offset(-menu.getBoundingClientRect().width)
	menu_is_open.set(false)
	menu.style.position = "fixed"

	if (document.documentElement.clientWidth >= min_screen_size_fullscreen_menu) {
		menu.style.width = ""
		nav.style.width = ""
		nav.style.maxWidth = ""
	}
}

const set_offset = (off: number) => {
	render_offset = off

	if (off > -swipe_initial_offset) {
		// Clear the transformation if the offset is zero
		menu.style.transform = ""
	} else {
		menu.style.transform = "translateX(" + off + "px)"
	}
}
</script>

<svelte:window ontouchstart={touchstart} ontouchmove={touchmove} ontouchend={touchend}/>

<button class="button_toggle_navigation" onclick={toggle_menu}>
	<i class="icon">menu</i>
</button>

<div class="nav_container" bind:this={menu}>
	<div class="scroll_container">
		<nav class="nav" bind:this={nav}>
			<a class="button" href="/" use:highlight_current_page>
				<i class="icon">home</i>
				<span>Home</span>
			</a>

			{#if $user.username !== undefined && $user.username !== ""}
				<MenuEntry id="subscription_info" collapsed={false}>
					{#snippet title()}
						<div class="username">{$user.username}</div>
					{/snippet}

					{#snippet body()}
						<div class="stats_table">
							<div>Subscription</div>
							<div>{$user.subscription.name}</div>

							{#if $user.subscription.type === "prepaid"}
								<div>Credit</div>
								<div><Euro amount={$user.balance_micro_eur}/></div>
							{/if}

							<div>Storage used</div>
							<div>{formatDataVolume($user.filesystem_storage_used, 3)}</div>
							<div>Transfer used</div>
							<div>{formatDataVolume($user.monthly_transfer_used, 3)}</div>
						</div>
					{/snippet}
				</MenuEntry>

				<a class="button" href="/d/me" use:highlight_current_page>
					<i class="icon">folder</i>
					<span>Filesystem</span>
				</a>
				<a class="button" href="/user" use:highlight_current_page>
					<i class="icon">person</i>
					<span>Account</span>
				</a>
				{#if $user.is_admin}
					<a class="button" href="/admin" use:highlight_current_page>
						<i class="icon">admin_panel_settings</i>
						<span>Admin Panel</span>
					</a>
				{/if}
			{:else}
				<a class="button" href="/login" use:highlight_current_page>
					<i class="icon">login</i>
					<span>Login</span>
				</a>
				<a class="button" href="/register" use:highlight_current_page>
					<i class="icon">how_to_reg</i>
					<span>Register</span>
				</a>
			{/if}

			<div class="separator"></div>

			<a class="button" href="/speedtest" use:highlight_current_page>
				<i class="icon">speed</i>
				<span>Speedtest</span>
			</a>
			<a class="button" href="/appearance" use:highlight_current_page>
				<i class="icon">palette</i>
				<span>Themes</span>
			</a>

			<Bookmarks menu_collapsed={false}/>
			<Tree menu_collapsed={false}/>
		</nav>
	</div>
</div>

<div class="page">
	<Router/>
</div>


{#if $loading_store !== 0}
	<div class="spinner">
		<Spinner/>
	</div>
{/if}

<style>
:global(body) {
	display: flex;
	flex-direction: row;

	color: var(--body_text_color);
	background-image: var(--background_image);
	background-color: var(--background_pattern_color);
	background-size: var(--background_image_size, initial);
	background-position: var(--background_image_position, initial);
	background-repeat: var(--background_image_repeat, repeat);
	background-attachment: fixed;
}
.button_toggle_navigation {
	position: fixed;
	backface-visibility: hidden;
	z-index: 10;
	top: 0;
	left: 0;
	background: none;
	box-shadow: none;
	margin: 0;
	padding: 4px;
	border-radius: 0;
	border-bottom-right-radius: 0px;
	border-bottom-right-radius: 2px;
	backdrop-filter: blur(6px);
}
.nav_container {
	flex: 0 0 auto;
	border-right: 1px solid var(--separator);
	background: var(--shaded_background);
	backdrop-filter: blur(6px);
	z-index: 9;
}
.scroll_container {
	position: sticky;
	top: 0;
	overflow-x: hidden;
	overflow-y: auto;
	max-height: 100vh;
	height: 100vh;
}
.nav {
	display: flex;
	flex-direction: column;
	width: 15em;
	min-width: 10em;
	max-width: 15em;
	padding-top: 2em;
}
.nav > .button {
	background: none;
	box-shadow: none;
}
.page {
	flex: 1 1 auto;
	overflow-x: hidden;
	max-width: 100%;
}
.username {
	flex: 1 1 auto;
	text-align: center;
	margin: 3px;
}

.separator {
	height: 1px;
	width: 100%;
	background-color: var(--separator);
}
.stats_table {
	display: grid;
	grid-template-columns: auto auto;
	gap: 0.2em 1em;
	margin: 5px;
}

.spinner {
	position: fixed;
	top: 10px;
	right: 10px;
	height: 120px;
	width: 120px;
}
</style>
