import { useState } from "react";
import * as tus from "tus-js-client";
import { env } from "../env";
import { getCompressedImageUrl } from "@nice/utils";

interface UploadResult {
	compressedUrl: string;
	url: string;
	fileId: string;
	fileName: string;
}

export function useTusUpload() {
	const [uploadProgress, setUploadProgress] = useState<
		Record<string, number>
	>({});
	const [isUploading, setIsUploading] = useState(false);
	const [uploadError, setUploadError] = useState<string | null>(null);

	const getFileId = (url: string) => {
		const parts = url.split("/");
		const uploadIndex = parts.findIndex((part) => part === "upload");
		if (uploadIndex === -1 || uploadIndex + 4 >= parts.length) {
			throw new Error("Invalid upload URL format");
		}
		return parts.slice(uploadIndex + 1, uploadIndex + 5).join("/");
	};
	const getResourceUrl = (url: string) => {
		const parts = url.split("/");
		const uploadIndex = parts.findIndex((part) => part === "upload");
		if (uploadIndex === -1 || uploadIndex + 4 >= parts.length) {
			throw new Error("Invalid upload URL format");
		}
		const resUrl = `http://${env.SERVER_IP}:${env.FILE_PORT}/uploads/${parts.slice(uploadIndex + 1, uploadIndex + 6).join("/")}`;
		return resUrl;
	};
	const handleFileUpload = async (
		file: File | Blob,
		onSuccess: (result: UploadResult) => void,
		onError: (error: Error) => void,
		fileKey: string // 添加文件唯一标识
	) => {
		// console.log()
		setIsUploading(true);
		setUploadProgress((prev) => ({ ...prev, [fileKey]: 0 }));
		setUploadError(null);

		try {
			// 如果是Blob，需要转换为File
			let fileName = "uploaded-file";
			if (file instanceof Blob && !(file instanceof File)) {
				// 根据MIME类型设置文件扩展名
				const extension = file.type.split('/')[1];
				fileName = `uploaded-file.${extension}`;
			}
			const uploadFile = file instanceof Blob && !(file instanceof File)
				? new File([file], fileName, { type: file.type })
				: file as File;
			console.log(`http://${env.SERVER_IP}:${env.SERVER_PORT}/upload`);
			const upload = new tus.Upload(uploadFile, {
				endpoint: `http://${env.SERVER_IP}:${env.SERVER_PORT}/upload`,
				retryDelays: [0, 1000, 3000, 5000],
				metadata: {
					filename: uploadFile.name,
					filetype: uploadFile.type,
					size: uploadFile.size as any,
				},
				onProgress: (bytesUploaded, bytesTotal) => {
					const progress = Number(
						((bytesUploaded / bytesTotal) * 100).toFixed(2)
					);
					setUploadProgress((prev) => ({
						...prev,
						[fileKey]: progress,
					}));
				},
				onSuccess: async (payload) => {
					if (upload.url) {
						const fileId = getFileId(upload.url);
						//console.log(fileId)
						const url = getResourceUrl(upload.url);
						setIsUploading(false);
						setUploadProgress((prev) => ({
							...prev,
							[fileKey]: 100,
						}));
						onSuccess({
							compressedUrl: getCompressedImageUrl(url),
							url,
							fileId,
							fileName: uploadFile.name,
						});
					}
				},
				onError: (error) => {
					const err =
							error instanceof Error
								? error
								: new Error("Unknown error");
					setIsUploading(false);
					setUploadError(error.message);
					console.log(error);
					onError(err);
				},
			});
			upload.start();
		} catch (error) {
			const err =
				error instanceof Error ? error : new Error("Upload failed");
			setIsUploading(false);
			setUploadError(err.message);
			onError(err);
		}
	};

	return {
		uploadProgress,
		isUploading,
		uploadError,
		handleFileUpload,
	};
}