const { ipcRenderer } = require('electron');
const path = require('path');

// Declare variables for selected Wine binary and game executable
let winePath = null;
let selectedGameExe = null;

// Tab switching logic
document.getElementById('downloadsTab').addEventListener('click', () => {
    switchTab('downloads');
});

document.getElementById('libraryTab').addEventListener('click', () => {
    switchTab('library');
});

function switchTab(tabName) {
    const tabs = document.querySelectorAll('.sidebar-button');
    const sections = document.querySelectorAll('.section');
    
    // Reset all tabs and sections
    tabs.forEach(tab => tab.classList.remove('active'));
    sections.forEach(section => section.classList.remove('active'));

    // Activate the selected tab and section
    if (tabName === 'downloads') {
        document.getElementById('libraryTab').classList.remove('active');
        document.getElementById('librarySection').classList.remove('active');
        document.getElementById('downloadsTab').classList.add('active');
        document.getElementById('downloadsSection').classList.add('active');
    } else if (tabName === 'library') {
        document.getElementById('downloadsTab').classList.remove('active');
        document.getElementById('downloadsSection').classList.remove('active');
        document.getElementById('libraryTab').classList.add('active');
        document.getElementById('librarySection').classList.add('active');
        loadLibrary();  // Load the library when switching to this tab
    }
}

// Default to Downloads tab active
switchTab('downloads');

// Back and Forward buttons for webview navigation
const gameBrowser = document.getElementById('gameBrowser');
document.getElementById('backButton').addEventListener('click', () => {
    gameBrowser.goBack();
});

document.getElementById('forwardButton').addEventListener('click', () => {
    gameBrowser.goForward();
});

// Listen for a "download" request from the webview
gameBrowser.addEventListener('did-start-navigation', (event) => {
    const downloadUrl = event.url;
    if (downloadUrl && downloadUrl.endsWith('.zip')) {
        // Trigger download automatically when a .zip file is detected
        handleDownload(downloadUrl);
    }
});

async function handleDownload(downloadUrl) {
    try {
        // Prompt the user to choose a library folder
        const libraryFolder = await ipcRenderer.invoke('select-library-folder');
        if (!libraryFolder) return;

        const fileName = path.basename(downloadUrl); // Use the URL to get the file name

        // Download and extract the ZIP file
        const result = await ipcRenderer.invoke('download-and-extract', downloadUrl, libraryFolder, fileName);
        
        if (result.success) {
            console.log('Game downloaded and extracted successfully!');
        } else {
            console.error('Error downloading or extracting the game:', result.error);
        }
    } catch (error) {
        console.error('Error handling download:', error);
    }
}

// Load the Library content (list of .exe files)
async function loadLibrary() {
    const libraryFolder = await ipcRenderer.invoke('select-library-folder');
    if (libraryFolder) {
        const gameList = await ipcRenderer.invoke('scan-library', libraryFolder);

        // Show the list of executables in the library
        const gameListDiv = document.getElementById('gameList');
        gameListDiv.innerHTML = ''; // Clear previous content

        if (gameList.length === 0) {
            gameListDiv.innerHTML = 'No games found in the library.';
        } else {
            gameList.forEach(game => {
                const gameItem = document.createElement('div');
                gameItem.className = 'game-item';
                gameItem.textContent = game; // Show the game path or name
                gameListDiv.appendChild(gameItem);
            });
        }
    }
}

// Select Wine binary
document.getElementById('selectWineButton').addEventListener('click', async () => {
    winePath = await ipcRenderer.invoke('select-wine-binary');
    if (winePath) {
        document.getElementById('wineStatus').textContent = `Wine Binary Selected: ${winePath}`;
    } else {
        document.getElementById('wineStatus').textContent = 'No Wine Binary Selected';
    }
});

// Select Library Folder and list `.exe` files
document.getElementById('selectLibraryFolder').addEventListener('click', async () => {
    const result = await ipcRenderer.invoke('select-library-folder');
    if (result && result.libraryFolderPath) {
        document.getElementById('wineStatus').textContent = `Library Folder Selected: ${result.libraryFolderPath}`;
        displayGameList(result.exeFiles);
    } else {
        document.getElementById('wineStatus').textContent = 'No Library Folder Selected';
    }
});

// Display the list of `.exe` files
function displayGameList(gameList) {
    const gameListContainer = document.getElementById('gameList');
    gameListContainer.innerHTML = ''; // Clear the existing list
    
    if (gameList.length === 0) {
        gameListContainer.innerHTML = 'No games found in the selected library.';
        return;
    }
  
    gameList.forEach((gameExe) => {
        const gameButton = document.createElement('button');
        gameButton.textContent = path.basename(gameExe);
        gameButton.addEventListener('click', () => {
            selectedGameExe = gameExe;
            document.getElementById('wineStatus').textContent = `Selected Game: ${path.basename(gameExe)}`;
        });
        gameListContainer.appendChild(gameButton);
    });
}

// Run game using Wine
document.getElementById('runGameButton').addEventListener('click', async () => {
    if (!winePath) {
        document.getElementById('wineStatus').textContent = 'Please select a Wine binary first.';
        return;
    }

    if (!selectedGameExe) {
        document.getElementById('wineStatus').textContent = 'Please select a game to run.';
        return;
    }

    // Run the game via Wine
    const result = await ipcRenderer.invoke('run-game-with-wine', selectedGameExe);

    if (result.success) {
        document.getElementById('wineStatus').textContent = 'Game is running!';
    } else {
        document.getElementById('wineStatus').textContent = `Error: ${result.message}`;
    }
});