'use client';

import { useState, useEffect } from 'react';
import { useNotification } from '@/app/context/NotificationContext';
import GrantSudoLink from "@/app/components/GrantSudoLink";

export default function TFTPPage() {
    const [files, setFiles] = useState([]);
    const [selectedFile, setSelectedFile] = useState(null);
    const { showNotification } = useNotification();

    const fetchFiles = async () => {
        try {
            const response = await fetch('/api/tftp/files');
            const data = await response.json();
            if (response.ok) {
                setFiles(data.files);
                showNotification('File list refreshed successfully.', 'success');
            } else {
                showNotification(data.error, 'error');
            }
        } catch (error) {
            showNotification('Failed to fetch files.', 'error');
        }
    };

    const handleDownload = (filename) => {
        window.location.href = `/api/tftp/files/${filename}`;
    };

    const handleDelete = async (filename) => {
        if (confirm(`Are you sure you want to delete ${filename}?`)) {
            try {
                const response = await fetch(`/api/tftp/files/${filename}`, {
                    method: 'DELETE',
                });
                const data = await response.json();
                if (response.ok) {
                    showNotification('File deleted successfully.', 'success');
                    fetchFiles();
                } else {
                    showNotification(data.error, 'error');
                }
            } catch (error) {
                showNotification('Failed to delete file.', 'error');
            }
        }
    };

    const handleUpload = async (event) => {
        event.preventDefault();
        if (!selectedFile) return;

        const formData = new FormData();
        formData.append('file', selectedFile);

        try {
            const response = await fetch('/api/tftp/files/upload', {
                method: 'POST',
                body: formData,
            });
            const data = await response.json();
            if (response.ok) {
                showNotification('File uploaded successfully.', 'success');
                fetchFiles();
            } else {
                showNotification(data.error, 'error');
            }
        } catch (error) {
            showNotification('Failed to upload file.', 'error');
        }
    };

    useEffect(() => {
        fetchFiles();
    }, []);

    return (
        <div className="container mt-5">
            <h1 className="mb-4">TFTP Server Files</h1>

            <div className="mb-3">
                <input
                    type="file"
                    className="form-control"
                    id="fileUpload"
                    onChange={(e) => setSelectedFile(e.target.files[0])}
                />
                <button className="btn btn-primary mt-2" onClick={handleUpload}>
                    Upload File
                </button>
                <button className="btn btn-secondary mt-2 ml-2" onClick={fetchFiles}>
                    Refresh
                </button>
            </div>
            <div className="mb-3">
                <div>
                    If upload fails: <GrantSudoLink text="Grant Sudo Rights"/>
                </div>
            </div>
            <table className="table table-striped">
                <thead>
                <tr>
                    <th scope="col">Filename</th>
                    <th scope="col">Size (bytes)</th>
                    <th scope="col">Actions</th>
                </tr>
                </thead>
                <tbody>
                {files.map((file) => (
                    <tr key={file.name}>
                        <td>{file.name}</td>
                        <td>{file.size}</td>
                        <td>
                            <button className="btn btn-success btn-sm mr-2" onClick={() => handleDownload(file.name)}>
                                Download
                            </button>
                            <button className="btn btn-danger btn-sm" onClick={() => handleDelete(file.name)}>
                                Delete
                            </button>
                        </td>
                    </tr>
                ))}
                </tbody>
            </table>
        </div>
    );
}