class TextFile {
    constructor(name, content) {
        this.name = name;
        this.content = content;
        this.lastModified = new Date();
    }

    updateContent(newContent) {
        this.content = newContent;
        this.lastModified = new Date();
    }
}

class FileManager {
    constructor() {
        this.files = [];
        this.currentFile = null;
    }

    addFile(file) {
        this.files.push(file);
    }

    getFileByName(name) {
        return this.files.find(file => file.name === name);
    }

    removeFile(name) {
        this.files = this.files.filter(file => file.name !== name);
    }

    saveCurrentFile(content) {
        if (this.currentFile) {
            this.currentFile.updateContent(content);
            return true;
        }
        return false;
    }
}

const fileManager = new FileManager();

// Demo files
fileManager.addFile(new TextFile('Example File 1', 'This is an example text file.\nYou can edit this content.'));
fileManager.addFile(new TextFile('Example File 2', 'Another example file with some text.\nEdit me!'));

function initFileManager() {
    const fileList = document.querySelector('#file-list');
    const editor = document.querySelector('#editor');
    const saveBtn = document.querySelector('#save-btn');
    const newFileBtn = document.querySelector('#new-file-btn');
    
    function loadFileIntoEditor(file) {
        fileManager.currentFile = file;
        editor.value = file.content;
    }
    
    function refreshFileList() {
        fileList.innerHTML = '';
        fileManager.files.forEach(file => {
            const fileItem = document.createElement('div');
            fileItem.className = 'p-3 hover:bg-gray-100 rounded cursor-pointer';
            fileItem.innerHTML = `
                <div class="flex items-center">
                    <i data-feather="file-text" class="mr-2 text-gray-500"></i>
                    <span>${file.name}</span>
                </div>
                <div class="text-xs text-gray-500 mt-1">
                    Last modified: ${file.lastModified.toLocaleString()}
                </div>
            `;
            fileItem.addEventListener('click', () => loadFileIntoEditor(file));
            fileList.appendChild(fileItem);
        });
        feather.replace();
    }
    
    saveBtn.addEventListener('click', () => {
        if (fileManager.currentFile) {
            fileManager.saveCurrentFile(editor.value);
            refreshFileList();
            alert('File saved successfully!');
        } else {
            alert('No file selected!');
        }
    });
    
    newFileBtn.addEventListener('click', () => {
        const fileName = prompt('Enter new file name:');
        if (fileName) {
            const newFile = new TextFile(fileName, '');
            fileManager.addFile(newFile);
            loadFileIntoEditor(newFile);
            refreshFileList();
        }
    });
    
    refreshFileList();
    if (fileManager.files.length > 0) {
        loadFileIntoEditor(fileManager.files[0]);
    }
}

document.addEventListener('DOMContentLoaded', initFileManager);