package baseview

import (
	"context"
	"git.haelnorr.com/h/oslstats/internal/contexts"
	"git.haelnorr.com/h/oslstats/internal/db"
)

type NavItem struct {
	Name string
	Href string
}

type ProfileItem struct {
	Name string
	Href string
}

// Main navigation items (centralized)
func getNavItems() []NavItem {
	return []NavItem{
		{Name: "Seasons", Href: "/seasons"},
		{Name: "Leagues", Href: "/leagues"},
		{Name: "Teams", Href: "/teams"},
	}
}

// Profile dropdown items (context-aware for admin and preview mode)
func getProfileItems(ctx context.Context) []ProfileItem {
	items := []ProfileItem{
		{Name: "Profile", Href: "/profile"},
		{Name: "Account", Href: "/account"},
	}

	// Check if we're in preview mode
	previewRole := contexts.GetPreviewRole(ctx)
	if previewRole != nil {
		// In preview mode: show stop viewing button instead of admin panel
		return items
	}

	// Not in preview mode: show admin panel if user is admin
	cache := contexts.Permissions(ctx)
	if cache != nil && cache.Roles["admin"] {
		items = append(items, ProfileItem{
			Name: "Admin Panel",
			Href: "/admin",
		})
	}

	return items
}

// Main navbar component
templ Navbar() {
	{{ navItems := getNavItems() }}
	{{ user := db.CurrentUser(ctx) }}
	{{ profileItems := getProfileItems(ctx) }}
	<div x-data="{ open: false }">
		<header class="bg-crust">
			<div class="mx-auto flex h-16 max-w-7xl items-center gap-8 px-4 sm:px-6 lg:px-8">
				<!-- Logo -->
				<a class="block" href="/">
					<span class="text-3xl font-bold transition hover:text-green">
						OSL Stats
					</span>
				</a>
				<div class="flex flex-1 items-center justify-end sm:justify-between">
					<!-- Desktop nav links -->
					@desktopNav(navItems)
					<!-- User menu / Login button -->
					@userMenu(user, profileItems)
				</div>
			</div>
		</header>
		<!-- Mobile side nav -->
		@mobileNav(navItems, user)
	</div>
}

// Desktop navigation (private helper)
templ desktopNav(navItems []NavItem) {
	<nav aria-label="Global" class="hidden sm:block">
		<ul class="flex items-center gap-6 text-xl">
			for _, item := range navItems {
				<li>
					<a
						class="text-subtext1 hover:text-green transition"
						href={ templ.SafeURL(item.Href) }
					>
						{ item.Name }
					</a>
				</li>
			}
		</ul>
	</nav>
}

// User menu section (private helper)
templ userMenu(user *db.User, profileItems []ProfileItem) {
	<div class="flex items-center gap-2">
		<div class="sm:flex sm:gap-2">
			if user != nil {
				@profileDropdown(user, profileItems)
			} else {
				@loginButton()
			}
		</div>
		@mobileMenuButton()
	</div>
}

// Profile dropdown (private helper)
templ profileDropdown(user *db.User, items []ProfileItem) {
	{{ previewRole := contexts.GetPreviewRole(ctx) }}
	<div x-data="{ isActive: false }" class="relative">
		<div
			class="inline-flex items-center overflow-hidden rounded-lg
                bg-sapphire hover:bg-sapphire/75 transition"
		>
			<button
				x-on:click="isActive = !isActive"
				class="h-full py-2 px-4 text-mantle hover:cursor-pointer"
			>
				<span class="sr-only">Profile</span>
				{ user.Username }
			</button>
		</div>
		<div
			class="absolute end-0 z-10 mt-2 w-48 divide-y divide-surface2
                rounded-lg border border-surface1 bg-surface0 shadow-lg"
			role="menu"
			x-cloak
			x-transition
			x-show="isActive"
			x-on:click.away="isActive = false"
			x-on:keydown.escape.window="isActive = false"
		>
			<!-- Preview Mode Stop Buttons -->
			if previewRole != nil {
				<div class="p-2 bg-yellow/10 border-b border-yellow/30 space-y-2">
					<p class="text-xs text-yellow/80 px-2 font-semibold">
						Viewing as: { previewRole.DisplayName }
					</p>
					<div class="flex gap-2">
						<form method="POST" action="/admin/roles/preview-stop?stay=true" class="flex-1">
							<button
								type="submit"
								class="w-full rounded-lg px-3 py-2
                                text-sm text-mantle bg-green font-semibold hover:bg-teal hover:cursor-pointer transition"
								role="menuitem"
								@click="isActive=false"
							>
								Stop Preview
							</button>
						</form>
						<form method="POST" action="/admin/roles/preview-stop" class="flex-1">
							<button
								type="submit"
								class="w-full rounded-lg px-3 py-2
                                text-sm text-mantle bg-blue font-semibold hover:bg-sky hover:cursor-pointer transition"
								role="menuitem"
								@click="isActive=false"
							>
								Return to Admin
							</button>
						</form>
					</div>
				</div>
			}
			<!-- Profile links -->
			<div class="p-2">
				for _, item := range items {
					<a
						href={ templ.SafeURL(item.Href) }
						class="block rounded-lg px-4 py-2 text-md hover:bg-crust"
						role="menuitem"
					>
						{ item.Name }
					</a>
				}
			</div>
			<!-- Logout -->
			<div class="p-2">
				<form hx-post="/logout">
					<button
						type="submit"
						class="flex w-full items-center gap-2 rounded-lg px-4 py-2
                            text-md text-red hover:bg-red/25 hover:cursor-pointer"
						role="menuitem"
						@click="isActive=false"
					>
						Logout
					</button>
				</form>
			</div>
		</div>
	</div>
}

// Login button (private helper)
templ loginButton() {
	<button
		class="hidden rounded-lg px-4 py-2 sm:block hover:cursor-pointer
            bg-green hover:bg-green/75 text-mantle transition"
		hx-post="/login"
		hx-swap="none"
	>
		Login
	</button>
}

// Mobile menu toggle (private helper)
templ mobileMenuButton() {
	<button
		@click="open = !open"
		class="block rounded-lg p-2.5 sm:hidden transition
            bg-surface0 text-subtext0 hover:text-overlay2/75"
	>
		<span class="sr-only">Toggle menu</span>
		<svg
			xmlns="http://www.w3.org/2000/svg"
			class="size-5"
			fill="none"
			viewBox="0 0 24 24"
			stroke="currentColor"
			stroke-width="2"
		>
			<path
				stroke-linecap="round"
				stroke-linejoin="round"
				d="M4 6h16M4 12h16M4 18h16"
			></path>
		</svg>
	</button>
}

// Mobile navigation drawer (private helper)
templ mobileNav(navItems []NavItem, user *db.User) {
	<div
		x-show="open"
		x-transition
		class="absolute w-full bg-mantle sm:hidden z-10"
	>
		<div class="px-4 py-6">
			<ul class="space-y-1">
				for _, item := range navItems {
					<li>
						<a
							href={ templ.SafeURL(item.Href) }
							class="block rounded-lg px-4 py-2 text-lg
                                bg-surface0 text-text transition hover:bg-surface2"
						>
							{ item.Name }
						</a>
					</li>
				}
			</ul>
		</div>
		if user == nil {
			<div class="px-4 pb-6">
				<ul class="space-y-1">
					<li class="flex justify-center items-center gap-2">
						<a
							class="w-26 px-4 py-2 rounded-lg bg-green text-mantle
                                transition hover:bg-green/75 text-center"
							href="/login"
						>
							Login
						</a>
					</li>
				</ul>
			</div>
		}
	</div>
}