// The module 'vscode' contains the VS Code extensibility API
// Import the module and reference it with the alias vscode in your code below
const vscode = require('vscode');
const openFilesAndURLs = require('./openFilesAndUrls.js')
// const path = require('path');

// This method is called when your extension is activated
// Your extension is activated the very first time the command is executed

/**
 * 
 * @param {vscode.ExtensionContext} context
 */
console.log("ITK LOGS!!!!!")
let treeView;
let _context;

function activate(context) {
    console.log('Congratulations, your extension "itk" is now active!');

    initTreeView(context);
    initCmdInVsCodeTerminal(context)

    initOpenChromeUrl(context)
    initCloseTabs(context)
    initHtml(context, getTemplate())
    initWelcome(context)
    initTests(context)
    initGetTabs(context)

    startAction(context);

}

async function startAction(context) {
    _context = context;
    updateCount(127)

    openFilesAndURLs({beforeFn: closeAllTabs})
    // openHtml()
    // openWelcomeFrame()
    // openTestsFrame()

    setTimeout(() => {
        getTabs();
    })
    // openTabsDirectly()
    // openUrlInChrome();
}

async function openStartTabs(groups) {
    const openPromises = [];
    const workspaceFolder = vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders[0];


    let columnIndex = 1;  // Start from the first column

    groups.forEach((group, index) => {
        group.forEach((file) => {
            if (file.url) {
                // If the object contains a URL, open it in a Webview (iframe)
                // openPromises.push(    runFrame(file));
                runFrame(file,  columnIndex + index)

            } else if (file.relPath) {
                // Resolve the file path relative to the workspace folder
                const filePath = vscode.Uri.joinPath(workspaceFolder.uri, file.relPath);

                // Open the file in a new tab (in a new column, if needed)
                openPromises.push(vscode.workspace.openTextDocument(filePath)
                    .then(doc => {
                        // If it's the first file of a group, open it in the first column
                        const columnToUse = columnIndex + index;

                        // Show the document in the appropriate column
                        vscode.window.showTextDocument(doc, { viewColumn: columnToUse, preview: false });

                        // Move to the next column after opening each file

                    }));
            }

        });
    });


}



function initGetTabs(context) {
    let disposable = vscode.commands.registerCommand('itk.getTabs', () => {
        getTabs()
    });

    // Add to your extension's subscriptions
    context.subscriptions.push(disposable);
}

function getTabs() {
    const tabGroups = vscode.window.tabGroups.all;


    if (tabGroups.length === 0) {
        vscode.window.showInformationMessage('No open tabs found.');
        return;
    }

    let tabInfo = [];

    tabGroups.forEach((group, index) => {
        group.tabs.forEach(tab => {
            let filePath = "Unknown";

            // Check if the tab is a text file and extract its full path
            if (tab.input instanceof vscode.TabInputText) {
                filePath = tab.input.uri.fsPath;
            }

            tabInfo.push(`Group ${index + 1}: ${tab.label} - ${filePath}`);
        });
    });


    vscode.window.showInformationMessage(`Opened Tabs:\n${tabInfo.join('\n')}`);

    console.log('tabInfo', tabInfo)
    return tabGroups;
}

function initOpenChromeUrl(context) {
    let disposable = vscode.commands.registerCommand('itk.openUrlInBrowser', async () => {
        openUrlInChrome()
    });

    context.subscriptions.push(disposable);
}
async function openUrlInChrome() {
    let url = 'https://new.csb.app';

    //   if (url) {
    //     try {
    //       new URL(url); // Validate URL
    //     } catch (error) {
    //       vscode.window.showErrorMessage("Invalid URL: " + error.message);
    //       return;
    //     }

    //     // Dynamic import:
    //     try {
    //       const open = await import('open'); // Correct way to import ES module
    //       await open.default(url); // Use open.default to call the function
    //     } catch (error) {
    //       vscode.window.showErrorMessage("Could not open URL: " + error.message);
    //       console.error("Open URL Error:", error);
    //     }
    //   }
}
function initCloseTabs(context) {
    let disposable = vscode.commands.registerCommand('itk.closeAllTabs', () => {
        // Call your close all tabs logic here (the code from above)
        closeAllTabs()
    });

    context.subscriptions.push(disposable);
}
async function closeAllTabs() {
    try {
        await vscode.commands.executeCommand('workbench.action.closeAllEditors');
    } catch (e) {
        vscode.window.showInformationMessage("Tabs Closing Error");
    }
}

function initHtml(context, defaultUrl) {
    context.subscriptions.push(
        vscode.commands.registerCommand('itk.openWelcome', () => {
            openHtml(context, defaultUrl);
        })
    );
}
function openHtml(context, html) {
    context = context || _context;
    html = html || getTemplate();
    const panel = vscode.window.createWebviewPanel(
        'HTML ITK', // Identifies the webview
        'ITK HTML', // Title of the panel
        vscode.ViewColumn.One, // Show in the first column
        {
            enableScripts: true, // Allows JavaScript execution
        }
    );

    // Set HTML content for the Webview
    panel.webview.html = html
    panel.webview.onDidReceiveMessage(message => {
        console.log('message', message, message.command)
        switch (message.command) {
            case 'buttonClicked':
                vscode.window.showInformationMessage('Button clicked!' + new Date().getTime());
                return;
        }
    }, undefined, context.subscriptions);

}



function initWelcome(context, defaultUrl) {
    context.subscriptions.push(
        vscode.commands.registerCommand('itk.openWelcomeFrame', () => {
            openWelcomeFrame();
        })
    );
}
function initTests(context, defaultUrl) {
    context.subscriptions.push(
        vscode.commands.registerCommand('itk.openTests', () => {
            openTestsFrame();
        })
    );
}
function openWelcomeFrame() {
    runFrame({ url: 'https://itrum.ru', name: 'ITK Welcome Frame', id: 'itkWelcomeFrame' })
}
function openTestsFrame() {
    runFrame({ url: 'https://itrum.ru', name: 'ITK Tests', id: 'itkTests' })
}
function runFrame({ url, name, id} , groupId) {
    const panel = vscode.window.createWebviewPanel(
        id, // Identifies the webview
        name, // Title of the panel
        vscode.ViewColumn.One, // Show in the first column
        {
            enableScripts: true, // Allows JavaScript execution
            localResourceRoots: []  // Define where local resources can be loaded from (if needed)
        }
    );

    panel.reveal(vscode.ViewColumn.One + groupId - 1); 
    console.log('groupId', groupId)
    // Set HTML content for the Webview
    panel.webview.html = getWebviewContent(url);
    function getWebviewContent(url) {
        return `<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ITK Academy</title>
    <style>
        body { margin: 0; padding: 0; display: flex; height: 100vh; }
        iframe { width: 100%; height: 100%; border: none; }
    </style>
</head>
<body>
    <iframe src="${url}"></iframe>
</body>
</html>`;
    }
}

function updateCount(newMessagesCount) {
    treeView.badge = {
        value: newMessagesCount,
        tooltip: `You have ${newMessagesCount} new documentation`
    };
}

function initCmdInVsCodeTerminal(context) {
    const disposable = vscode.commands.registerCommand('itk.openTabs', () => openTabsDirectly());
    context.subscriptions.push(disposable);
}
function initTreeView(context) {

    const view = vscode.window.createTreeView('itk.mainView', {
        treeDataProvider: new TabSaverTreeDataProvider(['HTML', 'Preview', 'Close Tabs'])
    });
    context.subscriptions.push(view);
    treeView = view;


    const view2 = vscode.window.createTreeView('itk.runView', {
        treeDataProvider: new TabSaverTreeDataProvider(['Run Tests', 'Close Tabs'])
    });
    context.subscriptions.push(view);
    context.subscriptions.push(view2);

    console.log('view', view)
    view.onDidChangeSelection((event) => treeClickHandler(event, context));
    view2.onDidChangeSelection((event) => treeClickHandler(event, context));



}
function treeClickHandler(event, context) {
    if (event.selection.length > 0) {
        const selectedItem = event.selection[0];
        console.log(`Clicked on: ${selectedItem}`); // Log the clicked item's label
        let cmds = {
            Preview: openWelcomeFrame,
            HTML: () => openHtml(null, '<h1>asdfasdf</h1>'),
            'Run Tests': openTestsFrame,
            'Close Tabs': closeAllTabs
        }
        let fn = cmds[selectedItem];
        fn && fn();
    }
}



class TabSaverTreeDataProvider {
    constructor(tabs) {
        this.tabs = tabs;
    }

    getTreeItem(element) {
        console.log('element', element);
        return new vscode.TreeItem(element);
    }

    getChildren(element) {
        console.log('element', element);
        // If no element is provided, return the root elements (tabs)
        if (!element) {
            return Promise.resolve(this.tabs);
        }
        // If an element is provided, you can handle it accordingly
        return Promise.resolve([]);
    }
}

function openTabsDirectly(tabs) {
    setTimeout(() => {

        if (tabs.length === 0) {
            vscode.window.showInformationMessage('No tabs saved yet.');
            return;
        }

        // JSON.parse(fs.readFileSync(saveFilePath, 'utf-8')); // No need for "as string[]"

        console.log("tabssssss", tabs)
        tabs.forEach(tabPath => {
            const uri = vscode.Uri.file(tabPath); // Create a Uri object

            vscode.workspace.openTextDocument(uri).then(doc => {
                vscode.window.showTextDocument(doc, { viewColumn: vscode.ViewColumn.Beside }); // Open beside
            }, error => {
                console.error(`Error opening ${tabPath}: ${error}`);
                vscode.window.showErrorMessage(`Error opening ${tabPath}: ${error}`);
            });
        });


        vscode.window.showInformationMessage('Hello World from itk!');
    }, 500)
}


function getTemplate() {
    return `<!DOCTYPE html>
        <html lang="en">
        <head>
            <meta charset="UTF-8">
            <meta name="viewport" content="width=device-width, initial-scale=1.0">
            <title>Cat Coding</title>
        </head>
        <body>
                  <h1>Welcome to ITK.academy!!!!!</h1>
           <p>This is a custom welcome view.</p>
            <p>You can add your own HTML content here.</p>
            <button id="myButton">Click Me</button>

            <script>
                const vscode = acquireVsCodeApi();

                document.getElementById('myButton').addEventListener('click', () => {
                    vscode.postMessage({ command: 'buttonClicked' });
                });
            </script>
        </body>
        </html>`;
}
// This method is called when your extension is deactivated
function deactivate() {
    console.log("ITK DEACTIVE")
}

module.exports = {
    activate,
    deactivate
}