import * as vscode from 'vscode';
import { RoadmapTreeProvider, RoadmapItem } from './roadmapTree';
import * as path from 'path';

export function activate(context: vscode.ExtensionContext) {
	const checklistFile = path.join(vscode.workspace.workspaceFolders?.[0].uri.fsPath || '', 'Development Checklist.md');
	console.log('[Extension] Using checklist path:', checklistFile);

	const roadmapProvider = new RoadmapTreeProvider(checklistFile, context);
	vscode.window.registerTreeDataProvider('roadmapChecklist', roadmapProvider);
	const treeView = vscode.window.createTreeView('roadmapChecklist', {
		treeDataProvider: roadmapProvider
	});

	context.subscriptions.push(
		vscode.commands.registerCommand('roadmap.toggleCheckbox', async (item: RoadmapItem) => {
			const doc = vscode.workspace.textDocuments.find(d => d.uri.fsPath === checklistFile);
			if (!doc) { return; }

			const edit = new vscode.WorkspaceEdit();
			const lines = doc.getText().split('\n');
			const index = lines.findIndex(line =>
				line.trim().match(/^[-*]\s+\[[ xX]\]/) &&
				line.includes(item.label)
			);
			if (index === -1) { return; }

			const line = lines[index];
			const toggledLine = line.replace(/\[(x| )\]/i, item.checked ? '[ ]' : '[x]');
			const range = new vscode.Range(new vscode.Position(index, 0), new vscode.Position(index, line.length));
			edit.replace(doc.uri, range, toggledLine);

			await vscode.workspace.applyEdit(edit);
			await doc.save(); // ✅ Triggers the existing onDidSaveTextDocument → refresh()
		}),
		vscode.commands.registerCommand('roadmapChecklist.reveal', async (item: RoadmapItem) => {
			treeView.reveal(item, { expand: true });
		})
	);

	function escapeRegex(str: string) {
		return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
	}
}

export function deactivate() {}