import "./DownloadButton.css";
import type { AudioFile, Directory } from "music-server-shared/types";
import { download, signalMap, type SignalMapEntry } from "../offline";
import { createSignal, type Accessor, type Signal } from "solid-js";
import type { AppOptions } from "../types";
import { formatBytes, joinPath } from "../utils";
import { DownloadSVG, RefreshSVG } from "./SVG";
import { LoadingSpinner } from "./LoadingScreen";

interface DownloadButtonProps {
	item: AudioFile | Directory;
	currentDir: Accessor<string>;
	options: Accessor<AppOptions>;
}

export function DownloadButton(props: DownloadButtonProps) {
	const fullPath = joinPath(props.currentDir(), props.item.name);
	let signal = signalMap.get(fullPath);
	if (!signal) {
		signal = createSignal<SignalMapEntry>();
		signalMap.set(fullPath, signal);
	}
	const [getProgress] = signal;

	return (
		<div
			class="download-item"
			onClick={(event) => {
				event.stopPropagation();
				download(props.item, props.currentDir(), props.options());
			}}
		>
			{(() => {
				const progress = getProgress();
				if (progress === undefined)
					return (
						<button>
							<DownloadSVG />
						</button>
					);
				if (progress === "DirectoryProgress") return <LoadingSpinner center={true} />;
				if (progress === "CachedFile")
					return (
						<button>
							<RefreshSVG />
						</button>
					);
				if ("bytes" in progress) return <span>{formatBytes(progress.bytes)}</span>;
				console.log(progress);
				console.error("Unexpected", progress);
			})()}
		</div>
	);
}