const vscode = require('vscode');
let templateFn = require('./iframeTemplateFn.js')


// Example array with files and URLs (Webview links)
let openTabs = require('./openTabs.js')

// Track the last tab in each group for tab order
let groupTabs = {};  // Tracks the last opened tab in each group

// Function to open files or URLs based on the group
async function openFilesAndURLs({beforeFn}) {
    const openPromises = [];

    const workspaceFolder = vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders[0];

    if (!workspaceFolder) {
        vscode.window.showErrorMessage('No workspace folder is open. Please open a folder or workspace.');
        return;
    }
    if (openTabs?.isIgnore) {
        return;
    }
    let groups = openTabs?.groups || []

    if (beforeFn) {
        await beforeFn();

    }


    groups.forEach((group, groupIndex) => {
        const groupId = groupIndex + 1;  // Group ID corresponds to column
        
        // Open files first, in order
        group.filter(item => item.relPath).forEach((item, index) => {
            const filePath = vscode.Uri.joinPath(workspaceFolder.uri, item.relPath);
            openPromises.push(vscode.workspace.openTextDocument(filePath)
                .then(doc => {
                    // Use groupId as the column index
                    const columnToUse = groupId;

                    // Manage the tab order per group
                    let lastTab = groupTabs[groupId] || 1;  // Start at tab 1 by default
                    vscode.window.showTextDocument(doc, { viewColumn: columnToUse, preview: false }).then(() => {
                        groupTabs[groupId] = lastTab + 1;  // Increment tab order for next file
                    });
                }));
        });

        // After files, open Webview (iframe) last for this group
        group.filter(item => item.url).forEach(item => {
            openPromises.push(openWebview(item.url, groupId));
        });
    });

    // Wait for all files/URLs to be opened
    Promise.all(openPromises).then(() => {
        console.log('All files and URLs have been opened.');
    }).catch(err => {
        console.error('Error opening files or URLs:', err);
    });
}

// Function to open a URL in a Webview (iframe) with an editable command line and refresh button
function openWebview(url, groupId) {
    const panel = vscode.window.createWebviewPanel(
        'urlPreview',  // Panel ID
        'Webview Preview!!',  // Panel title
        vscode.ViewColumn.One,  // Default to the first column
        {
            enableScripts: true,  // Allow running JavaScript in the Webview
            localResourceRoots: []  // Define where local resources can be loaded from (if needed)
        }
    );

    // Adjust the column index to match the groupId
    panel.reveal(vscode.ViewColumn.One + groupId - 1);  // Adjust column index based on groupId

    // Initialize the HTML content for the Webview with a command line input and refresh button
    panel.webview.html = getWebviewContent(url);

    // Add a message listener to handle the URL refresh command from the webview
    panel.webview.onDidReceiveMessage((message) => {
        if (message.command === 'refreshUrl') {
            // Update the iframe URL with the new one entered in the input field
            panel.webview.html = getWebviewContent(message.url);
        }
    });
}

// Helper function to generate the HTML for the Webview with an editable command line and refresh button

function getWebviewContent(url) {

    return templateFn(url);
}


module.exports = openFilesAndURLs