import * as vscode from 'vscode';
import { validateTplDocument } from './core/TplLinter';
import { TplCodeActionProvider } from './providers/TplCodeActionProvider';
import { TplDocumentFormatter } from './providers/TplDocumentFormatter';
import { TplCompletionProvider } from './providers/TplCompletionProvider';
import { TplHoverProvider } from './providers/TplHoverProvider';
import { workspaceIndex } from './core/WorkspaceIndex'; // <-- Index importiert

export function activate(context: vscode.ExtensionContext) {
    const diagnosticCollection = vscode.languages.createDiagnosticCollection('tpl-scanner');
    context.subscriptions.push(diagnosticCollection);

    // LIVE INDEXING & LINTING
    vscode.workspace.onDidOpenTextDocument(doc => {
        if (doc.languageId === 'tpl') {
            workspaceIndex.updateFile(doc.uri, doc.getText());
            validateTplDocument(doc, diagnosticCollection);
        }
    });
    
    vscode.workspace.onDidChangeTextDocument(event => {
        if (event.document.languageId === 'tpl') {
            workspaceIndex.updateFile(event.document.uri, event.document.getText());
            validateTplDocument(event.document, diagnosticCollection);
        }
    });

    // Aufräumen, wenn Dateien gelöscht werden
    vscode.workspace.onDidDeleteFiles(event => {
        for (const uri of event.files) {
            workspaceIndex.removeFile(uri);
        }
    });
    
    vscode.workspace.onDidChangeConfiguration(e => {
        if (e.affectsConfiguration('tpl')) {
            scanWorkspace(diagnosticCollection);
        }
    });

    // Provider registrieren
    context.subscriptions.push(vscode.languages.registerCodeActionsProvider('tpl', new TplCodeActionProvider(), { providedCodeActionKinds: [vscode.CodeActionKind.QuickFix] }));
    context.subscriptions.push(vscode.languages.registerDocumentFormattingEditProvider('tpl', new TplDocumentFormatter()));
    context.subscriptions.push(vscode.languages.registerCompletionItemProvider('tpl', new TplCompletionProvider(), '.'));
    context.subscriptions.push(vscode.languages.registerHoverProvider('tpl', new TplHoverProvider()));

    context.subscriptions.push(vscode.commands.registerCommand('tpl.scanWorkspace', () => {
        scanWorkspace(diagnosticCollection);
        vscode.window.showInformationMessage("TPL: Workspace-Scan gestartet.");
    }));

    // Initialer Scan beim Start
    scanWorkspace(diagnosticCollection);
}

// Füttert RAM und Linter
async function scanWorkspace(collection: vscode.DiagnosticCollection) {
    const files = await vscode.workspace.findFiles('**/*.tpl', '**/node_modules/**');
    
    for (const file of files) {
        const doc = await vscode.workspace.openTextDocument(file);
        
        // ZUERST in den RAM laden...
        workspaceIndex.updateFile(doc.uri, doc.getText());
        
        // ... DANN linten
        validateTplDocument(doc, collection);
    }
}