<script lang="ts">
	import { BedarfsausweisWohnenClient, GEGNachweisWohnenClient, ObjektClient, UnterlageClient, VerbrauchsausweisGewerbeClient, VerbrauchsausweisWohnenClient } from "./Ausweis/types.js";
	import { Trash, Upload } from "radix-svelte-icons";
	import HelpLabel from "#components/labels/HelpLabel.svelte";
	
	export let kategorie: string = "";
	export let files: UnterlageClient[] = [];
	export let max: number = Infinity;
	export let min: number = 1;
	export let name: string = "";
	export let ausweis: VerbrauchsausweisWohnenClient | VerbrauchsausweisGewerbeClient | BedarfsausweisWohnenClient | GEGNachweisWohnenClient;
	export let objekt: ObjektClient;
	import mime from "mime-types";
	import { api } from "astro-typesafe-api/client";


		function getAllFiles(this: HTMLInputElement) {
			const fileArray = this.files || [];
	
			if (fileArray.length == max) {
				this.value = "";
				return;
			}
			
			for (let i = 0; i < fileArray.length; i++) {
				const file = fileArray[i];
	
				if (i == max) {
					break;
				}
	
				const reader = new FileReader();
	
				reader.onload = async () => {
					if (reader.readyState != reader.DONE) {
						return;
					}
	
					if (!reader.result) {
						return;
					}

					const mimeType = mime.types[file.name.split(".").pop() as string]

					const { uid } = await api.unterlage.PUT.fetch({
						data: reader.result as string,
						kategorie,
						mime: mimeType,
						name: file.name
					})
	
					files.push({ uid, kategorie, name: file.name, mime: mimeType });
					files = files;
					

					if (i == (Math.min(fileArray.length, max) - 1)) {
						this.value = "";
					}
				}
	
				reader.readAsDataURL(file);
			}
		}
	
		let fileUpload: HTMLInputElement;

		export const upload = () => {
			fileUpload.click()
		}
</script>

<div class="flex flex-col gap-4">
	<!-- Falls die maximale Anzahl Dokumente erreicht wurde grauen wir den input aus und zeigen einen Hilfstext -->
	{#if files.filter((file) => file.kategorie === kategorie).length === max}
		<span class="bg-base-200 border px-4 py-2">Maximale Anzahl Dokumente wurde erreicht.</span>
	{:else if max > 1}
	<div class="input-standard">
		<input type="file" class="file-input file-input-ghost h-[38px]" bind:this={fileUpload} {name} multiple on:change={getAllFiles} />
		<div class="help-label">
			<HelpLabel>
				<slot />
			</HelpLabel>
		</div>
	
	</div>
	{:else}
	<div class="input-standard">
		<input type="file" class="file-input file-input-ghost h-[38px]" bind:this={fileUpload} {name} on:change={getAllFiles} />
		<div class="help-label">
			<HelpLabel>
				<slot />
			</HelpLabel>
		</div>
	
	</div>
	{/if}
	<div class="grid grid-cols-2 gap-2">
		{#each files as file, i}
			{#if file.kategorie == kategorie}
				<div class="relative group">
					<div
						class="h-full max-h-96 w-full rounded-lg border-2 group-hover:contrast-50 object-cover transition-all text-center items-center flex p-4 text-opacity-75 text-black"
					>{file.name}</div>
					<div class="invisible group-hover:visible absolute left-[50%] top-[50%] translate-x-[-50%] translate-y-[-50%] flex flex-row gap-2">
						<button
						type="button"
						class="rounded-full w-[30px] h-[30px] flex items-center justify-center p-0 bg-[rgba(0,0,0,0.4)]"
						on:click={() => {
							delete files[i];
							files = files.filter((x) => x);
						}}
					>
						<Trash size={20} color="#fff"></Trash>
					</button>
					</div>
				</div>
			{/if}
		{/each}

		<!-- Wir zeigen Platzhalter an, damit der Nutzer sieht wie viele Bilder er hochladen soll -->
		{#each { length: Math.max(0, Math.min(max, 4) - files.filter(image => image.kategorie === kategorie).length) } as _, i}
		<div class="relative group">
			<img
				src="/placeholder.png"
				alt={kategorie}
				class="h-full max-h-32 w-full rounded-lg border-2 group-hover:contrast-50 object-cover transition-all"
				class:opacity-35={i >= min}
			/>
			<div class="invisible group-hover:visible absolute left-[50%] top-[50%] translate-x-[-50%] translate-y-[-50%] flex flex-row gap-2">
				<button
					type="button"
					class="rounded-full w-[30px] h-[30px] flex items-center justify-center p-0 bg-[rgba(0,0,0,0.4)]"
					on:click={upload}
				>
					<Upload size={20} color="#fff"></Upload>
				</button>
			</div>
		</div>
		{/each}
	</div>
</div>