From 4704a1d5a06e61a8273c8522fc66e8438e9299b0 Mon Sep 17 00:00:00 2001
From: Ku6epXBOCTuK <Ku6epXBOCTuK@gmail.com>
Date: Sun, 12 Jul 2026 21:02:51 +0500
Subject: [PATCH] feat: add sidebar panel

---
 src/extension.ts              | 18 +++++++
 src/views/taskTreeProvider.ts | 88 +++++++++++++++++++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100644 src/views/taskTreeProvider.ts

diff --git a/src/extension.ts b/src/extension.ts
index e866325..b5a44bc 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -1,10 +1,28 @@
+import * as path from "path";
 import * as vscode from "vscode";
 import { ConfigStore } from "./storage/configStore";
 import { TaskStore } from "./storage/taskStore";
+import { TaskTreeProvider } from "./views/taskTreeProvider";
 
 export function activate(context: vscode.ExtensionContext) {
 	const taskStore = new TaskStore();
 	const configStore = new ConfigStore();
+	const taskTreeProvider = new TaskTreeProvider();
+
+	vscode.window.registerTreeDataProvider(
+		"projectTasks.tasks",
+		taskTreeProvider,
+	);
+
+	const projectPath = configStore.getProjectTaskPath();
+	if (projectPath) {
+		const taskPattern = path.join(projectPath, "*.task.md").replace(/\\/g, "/");
+		const watcher = vscode.workspace.createFileSystemWatcher(taskPattern);
+		watcher.onDidCreate(() => taskTreeProvider.refresh());
+		watcher.onDidChange(() => taskTreeProvider.refresh());
+		watcher.onDidDelete(() => taskTreeProvider.refresh());
+		context.subscriptions.push(watcher);
+	}
 
 	const statusBarItem = vscode.window.createStatusBarItem(
 		vscode.StatusBarAlignment.Left,
diff --git a/src/views/taskTreeProvider.ts b/src/views/taskTreeProvider.ts
new file mode 100644
index 0000000..d13185c
--- /dev/null
+++ b/src/views/taskTreeProvider.ts
@@ -0,0 +1,88 @@
+import * as vscode from "vscode";
+import { Task, TaskStatus } from "../model/task";
+import { TaskStore } from "../storage/taskStore";
+import { ConfigStore } from "../storage/configStore";
+
+const STATUS_ORDER: TaskStatus[] = ["todo", "in-progress", "done", "cancelled"];
+
+const STATUS_ICONS: Record<TaskStatus, vscode.ThemeIcon> = {
+	todo: new vscode.ThemeIcon("circle-outline"),
+	"in-progress": new vscode.ThemeIcon("sync"),
+	done: new vscode.ThemeIcon("check"),
+	cancelled: new vscode.ThemeIcon("close"),
+};
+
+class TaskGroupTreeItem extends vscode.TreeItem {
+	constructor(
+		label: string,
+		public readonly tasks: Task[],
+		icon: vscode.ThemeIcon,
+	) {
+		super(label, vscode.TreeItemCollapsibleState.Collapsed);
+		this.iconPath = icon;
+		this.description = `(${tasks.length})`;
+	}
+}
+
+export class TaskTreeProvider implements vscode.TreeDataProvider<vscode.TreeItem> {
+	private _onDidChangeTreeData = new vscode.EventEmitter<
+		vscode.TreeItem | undefined | null | void
+	>();
+	readonly onDidChangeTreeData = this._onDidChangeTreeData.event;
+
+	private taskStore = new TaskStore();
+	private configStore = new ConfigStore();
+
+	refresh(): void {
+		this._onDidChangeTreeData.fire();
+	}
+
+	getTreeItem(element: vscode.TreeItem): vscode.TreeItem {
+		return element;
+	}
+
+	async getChildren(element?: vscode.TreeItem): Promise<vscode.TreeItem[]> {
+		if (!element) {
+			return this.getRootChildren();
+		}
+		return this.getTaskChildren(element as TaskGroupTreeItem);
+	}
+
+	private async getRootChildren(): Promise<vscode.TreeItem[]> {
+		const projectPath = this.configStore.getProjectTaskPath();
+		if (!projectPath) {
+			return [new vscode.TreeItem("Open a workspace folder to start")];
+		}
+
+		const tasks = await this.taskStore.listTasks(projectPath);
+
+		return STATUS_ORDER.map((status) => {
+			const groupTasks = tasks.filter((t) => t.status === status);
+			const label = status === "todo" ? "To Do"
+				: status === "in-progress" ? "In Progress"
+				: status === "done" ? "Done"
+				: "Cancelled";
+			const item = new TaskGroupTreeItem(
+				label,
+				groupTasks,
+				STATUS_ICONS[status],
+			);
+			item.id = `group-${status}`;
+			item.contextValue = "taskGroup";
+			return item;
+		});
+	}
+
+	private getTaskChildren(group: TaskGroupTreeItem): vscode.TreeItem[] {
+		return group.tasks.map((task) => {
+			const item = new vscode.TreeItem(task.title);
+			item.id = task.id;
+			item.description = task.priority;
+			item.tooltip = new vscode.MarkdownString(
+				`**${task.title}**\n\nPriority: ${task.priority}\nStatus: ${task.status}${task.assignee ? `\nAssignee: ${task.assignee}` : ""}`,
+			);
+			item.contextValue = "task";
+			return item;
+		});
+	}
+}