feat: api key authentication (#291)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

frontend/src/lib/components/ui/calendar/calendar-day.svelte

@@ -0,0 +1,42 @@
+<script lang="ts">
+	import { Calendar as CalendarPrimitive } from "bits-ui";
+	import { buttonVariants } from "$lib/components/ui/button/index.js";
+	import { cn } from "$lib/utils/style.js";
+
+	type $$Props = CalendarPrimitive.DayProps;
+	type $$Events = CalendarPrimitive.DayEvents;
+
+	export let date: $$Props["date"];
+	export let month: $$Props["month"];
+	let className: $$Props["class"] = undefined;
+	export { className as class };
+</script>
+
+<CalendarPrimitive.Day
+	on:click
+	{date}
+	{month}
+	class={cn(
+		buttonVariants({ variant: "ghost" }),
+		"h-9 w-9 p-0 font-normal ",
+		"[&[data-today]:not([data-selected])]:bg-accent [&[data-today]:not([data-selected])]:text-accent-foreground",
+		// Selected
+		"data-[selected]:bg-primary data-[selected]:text-primary-foreground data-[selected]:hover:bg-primary data-[selected]:hover:text-primary-foreground data-[selected]:focus:bg-primary data-[selected]:focus:text-primary-foreground data-[selected]:opacity-100",
+		// Disabled
+		"data-[disabled]:text-muted-foreground data-[disabled]:opacity-50",
+		// Unavailable
+		"data-[unavailable]:text-destructive-foreground data-[unavailable]:line-through",
+		// Outside months
+		"data-[outside-month]:text-muted-foreground [&[data-outside-month][data-selected]]:bg-accent/50 [&[data-outside-month][data-selected]]:text-muted-foreground data-[outside-month]:pointer-events-none data-[outside-month]:opacity-50 [&[data-outside-month][data-selected]]:opacity-30",
+		className
+	)}
+	{...$$restProps}
+	let:selected
+	let:disabled
+	let:unavailable
+	let:builder
+>
+	<slot {selected} {disabled} {unavailable} {builder}>
+		{date.day}
+	</slot>
+</CalendarPrimitive.Day>