Initial commit

.gitignore

@@ -1,12 +1,13 @@
 # vscode
 .vscode
+.vscode-test
 
 # Intellij
 *.iml
 .idea
 
 # npm
-node_modules
+node_modules/
 
 # Don't include the compiled main.js file in the repo.
 # They should be uploaded to GitHub releases instead.
@@ -20,3 +21,74 @@ data.json
 
 # Exclude macOS Finder (System Explorer) View States
 .DS_Store
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.*
+!.env.example
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Vite files
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*
+.vite/
+
+# pnpm
+.pnpm-store
+
+# yarn v3
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

CLAUDE.md

@@ -0,0 +1,97 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Type
+
+This is an Obsidian community plugin written in TypeScript and bundled to JavaScript using esbuild.
+
+## Build Commands
+
+```bash
+# Install dependencies
+npm install
+
+# Development mode (watch mode, auto-recompiles on changes)
+npm run dev
+
+# Production build (type checks, then bundles with minification)
+npm run build
+
+# Lint code
+npm run lint
+```
+
+## Architecture
+
+### Entry Points & Build Process
+- Source code lives in `src/`
+- Main entry point: `src/main.ts` (plugin lifecycle management)
+- Build target: `main.js` (bundled output at root)
+- Bundler: **esbuild** (configured in `esbuild.config.mjs`)
+- Required release artifacts: `main.js`, `manifest.json`, `styles.css` (if present)
+
+### Code Organization Pattern
+- **Keep `main.ts` minimal**: Only plugin lifecycle (onload, onunload, command registration)
+- Delegate feature logic to separate modules
+- Settings are defined in `src/settings.ts`
+- Organize larger features into subdirectories:
+  - `commands/` for command implementations
+  - `ui/` for modals, views, and UI components
+  - `utils/` for helper functions
+
+### Plugin Architecture
+- Extends `Plugin` class from `obsidian` package
+- Settings are loaded/saved using `this.loadData()` / `this.saveData()`
+- All event listeners, intervals, and DOM events must use `this.register*()` helpers for proper cleanup
+- Commands are registered via `this.addCommand()` with stable IDs
+
+## Key Constraints
+
+### Obsidian-Specific
+- **Bundle everything**: No external runtime dependencies (except `obsidian`, `electron`, CodeMirror packages)
+- **External packages**: Listed in `esbuild.config.mjs` external array; never bundle these
+- **Mobile compatibility**: Avoid Node/Electron APIs unless `isDesktopOnly: true` in manifest
+- **Network requests**: Default to offline; require explicit user consent for any external calls
+- **No remote code execution**: Never fetch/eval scripts or auto-update outside normal releases
+
+### Manifest (`manifest.json`)
+- Never change `id` after initial release
+- Use semantic versioning for `version`
+- Keep `minAppVersion` accurate when using newer Obsidian APIs
+- Update both `manifest.json` and `versions.json` when bumping versions
+
+## Development Workflow
+
+### Testing Locally
+1. Build the plugin: `npm run dev` or `npm run build`
+2. Copy `main.js`, `manifest.json`, `styles.css` to:
+   ```
+   <Vault>/.obsidian/plugins/<plugin-id>/
+   ```
+3. Reload Obsidian and enable plugin in Settings → Community plugins
+
+### Type Checking
+- TypeScript strict mode enabled in `tsconfig.json`
+- Build command runs `tsc -noEmit -skipLibCheck` before bundling
+- Fix type errors before considering build successful
+
+## Important Files
+
+- `src/main.ts` - Plugin class and lifecycle
+- `src/settings.ts` - Settings interface, defaults, and settings tab UI
+- `manifest.json` - Plugin metadata (never commit with wrong version)
+- `esbuild.config.mjs` - Build configuration
+- `eslint.config.mts` - ESLint configuration with Obsidian-specific rules
+- `styles.css` - Optional plugin styles
+
+## Code Quality Guidelines
+
+From AGENTS.md and Obsidian best practices:
+- Split files when they exceed ~200-300 lines
+- Use clear module boundaries (single responsibility per file)
+- Prefer `async/await` over promise chains
+- Register all cleanup via `this.register*()` helpers to prevent memory leaks
+- Keep startup lightweight; defer heavy work until needed
+- Use stable command IDs (don't rename after release)
+- Provide sensible defaults for all settings

manifest.json

@@ -1,9 +1,9 @@
 {
-	"id": "sample-plugin",
-	"name": "Sample Plugin",
+	"id": "todo-tracker",
+	"name": "Todo Tracker",
 	"version": "1.0.0",
 	"minAppVersion": "0.15.0",
-	"description": "Demonstrates some of the capabilities of the Obsidian API.",
+	"description": "Track and manage todos from your notes in a sidebar panel. Toggle checkboxes and move todos between notes.",
 	"author": "Obsidian",
 	"authorUrl": "https://obsidian.md",
 	"fundingUrl": "https://obsidian.md/pricing",

package.json

@@ -8,12 +8,14 @@
 		"dev": "node esbuild.config.mjs",
 		"build": "tsc -noEmit -skipLibCheck && node esbuild.config.mjs production",
 		"version": "node version-bump.mjs && git add manifest.json versions.json",
-		"lint": "eslint ."
+		"lint": "eslint .",
+		"test": "vitest run",
+		"test:watch": "vitest"
 	},
 	"keywords": [],
 	"license": "0-BSD",
 	"devDependencies": {
-		"@types/node": "^16.11.6",
+		"@types/node": "^20.0.0",
 		"esbuild": "0.25.5",
 		"eslint-plugin-obsidianmd": "0.1.9",
 		"globals": "14.0.0",
@@ -21,7 +23,8 @@
 		"typescript": "^5.8.3",
 		"typescript-eslint": "8.35.1",
 		"@eslint/js": "9.30.1",
-		"jiti": "2.6.1"
+		"jiti": "2.6.1",
+		"vitest": "^3.0.0"
 	},
 	"dependencies": {
 		"obsidian": "latest"

src/core/todo-parser.test.ts

@@ -0,0 +1,124 @@
+import { describe, it, expect } from 'vitest';
+import { parseTodos } from './todo-parser';
+
+describe('parseTodos', () => {
+	it('should parse unchecked todos with dash marker', () => {
+		const content = '- [ ] Buy groceries';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]).toEqual({
+			id: 'line-0',
+			text: 'Buy groceries',
+			completed: false,
+			lineNumber: 0,
+			rawLine: '- [ ] Buy groceries',
+		});
+	});
+
+	it('should parse checked todos with lowercase x', () => {
+		const content = '- [x] Done task';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.completed).toBe(true);
+		expect(result.todos[0]?.text).toBe('Done task');
+	});
+
+	it('should parse checked todos with uppercase X', () => {
+		const content = '- [X] Completed item';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.completed).toBe(true);
+	});
+
+	it('should parse multiple todos', () => {
+		const content = '- [ ] First\n- [x] Second\n- [ ] Third';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(3);
+		expect(result.todos[0]?.lineNumber).toBe(0);
+		expect(result.todos[1]?.lineNumber).toBe(1);
+		expect(result.todos[2]?.lineNumber).toBe(2);
+	});
+
+	it('should handle asterisk list marker', () => {
+		const content = '* [ ] Asterisk todo';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Asterisk todo');
+	});
+
+	it('should handle plus list marker', () => {
+		const content = '+ [ ] Plus todo';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Plus todo');
+	});
+
+	it('should handle mixed content with non-todo lines', () => {
+		const content = '# Heading\nSome text\n- [ ] A todo\n- Regular list item\nMore text';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.lineNumber).toBe(2);
+		expect(result.todos[0]?.text).toBe('A todo');
+	});
+
+	it('should handle indented todos', () => {
+		const content = '  - [ ] Indented todo';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Indented todo');
+		expect(result.todos[0]?.rawLine).toBe('  - [ ] Indented todo');
+	});
+
+	it('should handle tab-indented todos', () => {
+		const content = '\t- [ ] Tab indented';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Tab indented');
+	});
+
+	it('should return empty array for content with no todos', () => {
+		const content = '# Just a heading\nSome paragraph text.\n- Regular list item';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(0);
+	});
+
+	it('should return empty array for empty content', () => {
+		const content = '';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(0);
+	});
+
+	it('should handle todos with extra whitespace after checkbox', () => {
+		const content = '- [ ]   Extra spaces';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Extra spaces');
+	});
+
+	it('should preserve full rawLine for each todo', () => {
+		const content = '- [ ] Simple task\n  - [x] Nested done';
+		const result = parseTodos(content);
+		expect(result.todos[0]?.rawLine).toBe('- [ ] Simple task');
+		expect(result.todos[1]?.rawLine).toBe('  - [x] Nested done');
+	});
+
+	it('should generate unique ids based on line numbers', () => {
+		const content = '- [ ] First\n\n- [ ] Second';
+		const result = parseTodos(content);
+		expect(result.todos[0]?.id).toBe('line-0');
+		expect(result.todos[1]?.id).toBe('line-2');
+	});
+
+	it('should not match checkboxes without proper spacing', () => {
+		const content = '-[ ] No space before bracket\n-[x]No space after';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(0);
+	});
+
+	it('should handle todos with special characters in text', () => {
+		const content = '- [ ] Task with `code` and **bold** and [link](url)';
+		const result = parseTodos(content);
+		expect(result.todos).toHaveLength(1);
+		expect(result.todos[0]?.text).toBe('Task with `code` and **bold** and [link](url)');
+	});
+});

src/core/todo-parser.ts

@@ -0,0 +1,52 @@
+import type { ParseResult, TodoItem } from './types';
+
+/**
+ * Regex pattern for markdown todo checkboxes.
+ * Matches: optional whitespace, list marker (-, *, +), space, checkbox [ ] or [x]/[X], space(s), text
+ */
+const TODO_PATTERN = /^(\s*[-*+]\s+\[)([xX ]?)(\]\s+)(.*)$/;
+
+/**
+ * Parse a single line and return a TodoItem if it's a todo, null otherwise.
+ */
+export function parseTodoLine(line: string, lineNumber: number): TodoItem | null {
+	const match = line.match(TODO_PATTERN);
+	if (!match) {
+		return null;
+	}
+
+	const checkboxContent = match[2];
+	const text = match[4]?.trim() ?? '';
+
+	return {
+		id: `line-${lineNumber}`,
+		text,
+		completed: checkboxContent === 'x' || checkboxContent === 'X',
+		lineNumber,
+		rawLine: line,
+	};
+}
+
+/**
+ * Parse markdown content and extract all todo items.
+ */
+export function parseTodos(content: string): ParseResult {
+	if (!content) {
+		return { todos: [] };
+	}
+
+	const lines = content.split('\n');
+	const todos: TodoItem[] = [];
+
+	for (let i = 0; i < lines.length; i++) {
+		const line = lines[i];
+		if (line === undefined) continue;
+
+		const todo = parseTodoLine(line, i);
+		if (todo) {
+			todos.push(todo);
+		}
+	}
+
+	return { todos };
+}

src/core/todo-transformer.test.ts

@@ -0,0 +1,183 @@
+import { describe, it, expect } from 'vitest';
+import {
+	toggleTodo,
+	removeTodoLine,
+	insertTodoAtEnd,
+	insertTodoUnderHeading,
+} from './todo-transformer';
+
+describe('toggleTodo', () => {
+	it('should check an unchecked todo', () => {
+		const content = '- [ ] Todo item';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('- [x] Todo item');
+	});
+
+	it('should uncheck a checked todo with lowercase x', () => {
+		const content = '- [x] Done item';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('- [ ] Done item');
+	});
+
+	it('should uncheck a checked todo with uppercase X', () => {
+		const content = '- [X] Done item';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('- [ ] Done item');
+	});
+
+	it('should preserve surrounding content', () => {
+		const content = 'Line 1\n- [ ] Todo\nLine 3';
+		const result = toggleTodo(content, 1);
+		expect(result).toBe('Line 1\n- [x] Todo\nLine 3');
+	});
+
+	it('should handle toggling first line', () => {
+		const content = '- [ ] First\nSecond line';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('- [x] First\nSecond line');
+	});
+
+	it('should handle toggling last line', () => {
+		const content = 'First line\n- [ ] Last';
+		const result = toggleTodo(content, 1);
+		expect(result).toBe('First line\n- [x] Last');
+	});
+
+	it('should preserve indentation when toggling', () => {
+		const content = '  - [ ] Indented';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('  - [x] Indented');
+	});
+
+	it('should handle asterisk marker', () => {
+		const content = '* [ ] Asterisk todo';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('* [x] Asterisk todo');
+	});
+
+	it('should return unchanged content if line is not a todo', () => {
+		const content = 'Not a todo\n- [ ] Real todo';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('Not a todo\n- [ ] Real todo');
+	});
+
+	it('should handle single line content', () => {
+		const content = '- [x] Only line';
+		const result = toggleTodo(content, 0);
+		expect(result).toBe('- [ ] Only line');
+	});
+});
+
+describe('removeTodoLine', () => {
+	it('should remove a line from the middle', () => {
+		const content = 'Line 1\n- [ ] Todo\nLine 3';
+		const result = removeTodoLine(content, 1);
+		expect(result).toBe('Line 1\nLine 3');
+	});
+
+	it('should remove the first line', () => {
+		const content = '- [ ] First\nSecond\nThird';
+		const result = removeTodoLine(content, 0);
+		expect(result).toBe('Second\nThird');
+	});
+
+	it('should remove the last line', () => {
+		const content = 'First\nSecond\n- [ ] Last';
+		const result = removeTodoLine(content, 2);
+		expect(result).toBe('First\nSecond');
+	});
+
+	it('should handle single line content', () => {
+		const content = '- [ ] Only line';
+		const result = removeTodoLine(content, 0);
+		expect(result).toBe('');
+	});
+
+	it('should handle removing from two-line content', () => {
+		const content = '- [ ] First\n- [ ] Second';
+		const result = removeTodoLine(content, 0);
+		expect(result).toBe('- [ ] Second');
+	});
+
+	it('should handle out of bounds line number gracefully', () => {
+		const content = 'Line 1\nLine 2';
+		const result = removeTodoLine(content, 5);
+		expect(result).toBe('Line 1\nLine 2');
+	});
+});
+
+describe('insertTodoAtEnd', () => {
+	it('should append todo to end of file', () => {
+		const content = '# Heading\nContent';
+		const result = insertTodoAtEnd(content, '- [ ] New todo');
+		expect(result).toBe('# Heading\nContent\n- [ ] New todo');
+	});
+
+	it('should handle empty file', () => {
+		const content = '';
+		const result = insertTodoAtEnd(content, '- [ ] New todo');
+		expect(result).toBe('- [ ] New todo');
+	});
+
+	it('should handle file ending with newline', () => {
+		const content = 'Content\n';
+		const result = insertTodoAtEnd(content, '- [ ] New todo');
+		expect(result).toBe('Content\n- [ ] New todo');
+	});
+
+	it('should handle file ending with multiple newlines', () => {
+		const content = 'Content\n\n';
+		const result = insertTodoAtEnd(content, '- [ ] New todo');
+		expect(result).toBe('Content\n\n- [ ] New todo');
+	});
+
+	it('should preserve indentation of the todo being inserted', () => {
+		const content = 'Content';
+		const result = insertTodoAtEnd(content, '  - [ ] Indented todo');
+		expect(result).toBe('Content\n  - [ ] Indented todo');
+	});
+});
+
+describe('insertTodoUnderHeading', () => {
+	it('should insert after heading when no next heading', () => {
+		const content = '# Heading\nExisting content';
+		const result = insertTodoUnderHeading(content, 0, '- [ ] New todo');
+		expect(result).toBe('# Heading\n- [ ] New todo\nExisting content');
+	});
+
+	it('should insert before next heading', () => {
+		const content = '# Heading 1\nContent 1\n# Heading 2\nContent 2';
+		const result = insertTodoUnderHeading(content, 0, '- [ ] New todo', 2);
+		expect(result).toBe('# Heading 1\nContent 1\n- [ ] New todo\n# Heading 2\nContent 2');
+	});
+
+	it('should insert at end of section when section is empty (back to back headings)', () => {
+		const content = '# Empty Section\n# Next Section';
+		const result = insertTodoUnderHeading(content, 0, '- [ ] New todo', 1);
+		expect(result).toBe('# Empty Section\n- [ ] New todo\n# Next Section');
+	});
+
+	it('should insert after nested heading', () => {
+		const content = '# H1\n## H2\nContent\n# H1 again';
+		const result = insertTodoUnderHeading(content, 1, '- [ ] Under H2', 3);
+		expect(result).toBe('# H1\n## H2\nContent\n- [ ] Under H2\n# H1 again');
+	});
+
+	it('should handle heading at end of file', () => {
+		const content = 'Some content\n# Final heading';
+		const result = insertTodoUnderHeading(content, 1, '- [ ] New todo');
+		expect(result).toBe('Some content\n# Final heading\n- [ ] New todo');
+	});
+
+	it('should handle file with only a heading', () => {
+		const content = '# Only heading';
+		const result = insertTodoUnderHeading(content, 0, '- [ ] New todo');
+		expect(result).toBe('# Only heading\n- [ ] New todo');
+	});
+
+	it('should preserve indentation of inserted todo', () => {
+		const content = '# Heading\nContent';
+		const result = insertTodoUnderHeading(content, 0, '  - [ ] Indented');
+		expect(result).toBe('# Heading\n  - [ ] Indented\nContent');
+	});
+});

src/core/todo-transformer.ts

@@ -0,0 +1,98 @@
+/**
+ * Regex pattern for markdown todo checkboxes (for toggling).
+ */
+const TODO_PATTERN = /^(\s*[-*+]\s+\[)([xX ]?)(\].*)$/;
+
+/**
+ * Toggle the checkbox state at the specified line number.
+ * Returns the modified content.
+ */
+export function toggleTodo(content: string, lineNumber: number): string {
+	const lines = content.split('\n');
+
+	if (lineNumber < 0 || lineNumber >= lines.length) {
+		return content;
+	}
+
+	const line = lines[lineNumber];
+	if (line === undefined) {
+		return content;
+	}
+
+	const match = line.match(TODO_PATTERN);
+	if (!match) {
+		return content;
+	}
+
+	const checkboxContent = match[2];
+	const isChecked = checkboxContent === 'x' || checkboxContent === 'X';
+	const newCheckbox = isChecked ? ' ' : 'x';
+
+	lines[lineNumber] = `${match[1]}${newCheckbox}${match[3]}`;
+	return lines.join('\n');
+}
+
+/**
+ * Remove the line at the specified line number.
+ * Returns the modified content.
+ */
+export function removeTodoLine(content: string, lineNumber: number): string {
+	const lines = content.split('\n');
+
+	if (lineNumber < 0 || lineNumber >= lines.length) {
+		return content;
+	}
+
+	lines.splice(lineNumber, 1);
+	return lines.join('\n');
+}
+
+/**
+ * Insert a todo line at the end of the content.
+ * Handles files with/without trailing newlines.
+ */
+export function insertTodoAtEnd(content: string, todoLine: string): string {
+	if (!content) {
+		return todoLine;
+	}
+
+	// If content ends with newline(s), append directly
+	if (content.endsWith('\n')) {
+		return content + todoLine;
+	}
+
+	// Otherwise add a newline before the todo
+	return content + '\n' + todoLine;
+}
+
+/**
+ * Insert a todo line under a specific heading.
+ * @param content - The file content
+ * @param headingLineNumber - The line number of the heading (0-based)
+ * @param todoLine - The todo line to insert
+ * @param nextHeadingLineNumber - Optional line number of the next heading (for section boundary)
+ */
+export function insertTodoUnderHeading(
+	content: string,
+	headingLineNumber: number,
+	todoLine: string,
+	nextHeadingLineNumber?: number
+): string {
+	const lines = content.split('\n');
+
+	// Determine where to insert
+	let insertPosition: number;
+
+	if (nextHeadingLineNumber !== undefined) {
+		// Insert just before the next heading (at the end of this section)
+		insertPosition = nextHeadingLineNumber;
+	} else {
+		// No next heading - insert right after the heading line
+		insertPosition = headingLineNumber + 1;
+	}
+
+	// Insert the todo line
+	lines.splice(insertPosition, 0, todoLine);
+
+	return lines.join('\n');
+}

src/core/types.ts

@@ -0,0 +1,34 @@
+/**
+ * Represents a parsed to-do item from markdown
+ */
+export interface TodoItem {
+	/** Unique identifier based on line number */
+	id: string;
+	/** The text content after the checkbox */
+	text: string;
+	/** Whether the checkbox is checked */
+	completed: boolean;
+	/** 0-based line number in the source file */
+	lineNumber: number;
+	/** The full original line text (for accurate replacement) */
+	rawLine: string;
+}
+
+/**
+ * Result of parsing a note's content
+ */
+export interface ParseResult {
+	todos: TodoItem[];
+}
+
+/**
+ * Represents a heading in a note
+ */
+export interface HeadingInfo {
+	/** The heading text without # symbols */
+	text: string;
+	/** Heading level (1-6) */
+	level: number;
+	/** 0-based line number */
+	lineNumber: number;
+}

src/main.ts

@@ -1,76 +1,64 @@
-import {App, Editor, MarkdownView, Modal, Notice, Plugin} from 'obsidian';
-import {DEFAULT_SETTINGS, MyPluginSettings, SampleSettingTab} from "./settings";
+import { Plugin, WorkspaceLeaf } from 'obsidian';
+import { DEFAULT_SETTINGS, MyPluginSettings, SampleSettingTab } from './settings';
+import { TodoSidebarView, TODO_VIEW_TYPE } from './views/todo-sidebar-view';
 
-// Remember to rename these classes and interfaces!
-
-export default class MyPlugin extends Plugin {
+export default class TodoTrackerPlugin extends Plugin {
 	settings: MyPluginSettings;
 
 	async onload() {
 		await this.loadSettings();
 
-		// This creates an icon in the left ribbon.
-		this.addRibbonIcon('dice', 'Sample', (evt: MouseEvent) => {
-			// Called when the user clicks the icon.
-			new Notice('This is a notice!');
+		// Register the todo sidebar view
+		this.registerView(TODO_VIEW_TYPE, (leaf: WorkspaceLeaf) => {
+			return new TodoSidebarView(leaf);
 		});
 
-		// This adds a status bar item to the bottom of the app. Does not work on mobile apps.
-		const statusBarItemEl = this.addStatusBarItem();
-		statusBarItemEl.setText('Status bar text');
+		// Add ribbon icon to open todo tracker
+		this.addRibbonIcon('check-square', 'Open Todo Tracker', () => {
+			this.activateView();
+		});
 
-		// This adds a simple command that can be triggered anywhere
+		// Add command to toggle todo tracker
 		this.addCommand({
-			id: 'open-modal-simple',
-			name: 'Open modal (simple)',
+			id: 'open-todo-tracker',
+			name: 'Open Todo Tracker',
 			callback: () => {
-				new SampleModal(this.app).open();
-			}
-		});
-		// This adds an editor command that can perform some operation on the current editor instance
-		this.addCommand({
-			id: 'replace-selected',
-			name: 'Replace selected content',
-			editorCallback: (editor: Editor, view: MarkdownView) => {
-				editor.replaceSelection('Sample editor command');
-			}
-		});
-		// This adds a complex command that can check whether the current state of the app allows execution of the command
-		this.addCommand({
-			id: 'open-modal-complex',
-			name: 'Open modal (complex)',
-			checkCallback: (checking: boolean) => {
-				// Conditions to check
-				const markdownView = this.app.workspace.getActiveViewOfType(MarkdownView);
-				if (markdownView) {
-					// If checking is true, we're simply "checking" if the command can be run.
-					// If checking is false, then we want to actually perform the operation.
-					if (!checking) {
-						new SampleModal(this.app).open();
-					}
-
-					// This command will only show up in Command Palette when the check function returns true
-					return true;
-				}
-				return false;
-			}
+				this.activateView();
+			},
 		});
 
-		// This adds a settings tab so the user can configure various aspects of the plugin
+		// Add settings tab
 		this.addSettingTab(new SampleSettingTab(this.app, this));
-
-		// If the plugin hooks up any global DOM events (on parts of the app that doesn't belong to this plugin)
-		// Using this function will automatically remove the event listener when this plugin is disabled.
-		this.registerDomEvent(document, 'click', (evt: MouseEvent) => {
-			new Notice("Click");
-		});
-
-		// When registering intervals, this function will automatically clear the interval when the plugin is disabled.
-		this.registerInterval(window.setInterval(() => console.log('setInterval'), 5 * 60 * 1000));
-
 	}
 
 	onunload() {
+		// Detach all leaves of this view type to ensure clean unload
+		this.app.workspace.detachLeavesOfType(TODO_VIEW_TYPE);
+	}
+
+	async activateView(): Promise<void> {
+		const { workspace } = this.app;
+
+		// Check if view already exists
+		const existingLeaves = workspace.getLeavesOfType(TODO_VIEW_TYPE);
+		if (existingLeaves.length > 0) {
+			// Reveal the existing view
+			const leaf = existingLeaves[0];
+			if (leaf) {
+				workspace.revealLeaf(leaf);
+			}
+			return;
+		}
+
+		// Create new leaf in right sidebar
+		const leaf = workspace.getRightLeaf(false);
+		if (leaf) {
+			await leaf.setViewState({
+				type: TODO_VIEW_TYPE,
+				active: true,
+			});
+			workspace.revealLeaf(leaf);
+		}
 	}
 
 	async loadSettings() {
@@ -81,19 +69,3 @@ export default class MyPlugin extends Plugin {
 		await this.saveData(this.settings);
 	}
 }
-
-class SampleModal extends Modal {
-	constructor(app: App) {
-		super(app);
-	}
-
-	onOpen() {
-		let {contentEl} = this;
-		contentEl.setText('Woah!');
-	}
-
-	onClose() {
-		const {contentEl} = this;
-		contentEl.empty();
-	}
-}

src/modals/heading-select-modal.ts

@@ -0,0 +1,92 @@
+import { App, FuzzySuggestModal, TFile, HeadingCache } from 'obsidian';
+import type { TodoItem } from '../core/types';
+import { removeTodoLine, insertTodoAtEnd, insertTodoUnderHeading } from '../core/todo-transformer';
+
+interface HeadingOption {
+	heading: HeadingCache | null;
+	displayText: string;
+}
+
+export class HeadingSelectModal extends FuzzySuggestModal<HeadingOption> {
+	private todo: TodoItem;
+	private sourceFile: TFile;
+	private targetFile: TFile;
+	private headings: HeadingCache[];
+
+	constructor(
+		app: App,
+		todo: TodoItem,
+		sourceFile: TFile,
+		targetFile: TFile,
+		headings: HeadingCache[]
+	) {
+		super(app);
+		this.todo = todo;
+		this.sourceFile = sourceFile;
+		this.targetFile = targetFile;
+		this.headings = headings;
+		this.setPlaceholder('Select a heading (or end of file)...');
+	}
+
+	getItems(): HeadingOption[] {
+		const items: HeadingOption[] = [];
+
+		// Add "End of file" option first
+		items.push({
+			heading: null,
+			displayText: 'End of file',
+		});
+
+		// Add all headings
+		for (const heading of this.headings) {
+			const indent = '  '.repeat(heading.level - 1);
+			items.push({
+				heading,
+				displayText: `${indent}${'#'.repeat(heading.level)} ${heading.heading}`,
+			});
+		}
+
+		return items;
+	}
+
+	getItemText(option: HeadingOption): string {
+		return option.displayText;
+	}
+
+	async onChooseItem(option: HeadingOption): Promise<void> {
+		await this.moveTodo(option.heading);
+	}
+
+	private async moveTodo(selectedHeading: HeadingCache | null): Promise<void> {
+		const todoLine = this.todo.rawLine;
+
+		// Remove from source file
+		await this.app.vault.process(this.sourceFile, (content) => {
+			return removeTodoLine(content, this.todo.lineNumber);
+		});
+
+		// Add to target file
+		if (selectedHeading) {
+			// Find the next heading (if any) to determine section boundary
+			const headingIndex = this.headings.findIndex(
+				(h) => h.position.start.line === selectedHeading.position.start.line
+			);
+			const nextHeading = this.headings[headingIndex + 1];
+			const nextHeadingLine = nextHeading?.position.start.line;
+
+			await this.app.vault.process(this.targetFile, (content) => {
+				return insertTodoUnderHeading(
+					content,
+					selectedHeading.position.start.line,
+					todoLine,
+					nextHeadingLine
+				);
+			});
+		} else {
+			// End of file
+			await this.app.vault.process(this.targetFile, (content) => {
+				return insertTodoAtEnd(content, todoLine);
+			});
+		}
+	}
+}

src/modals/note-select-modal.ts

@@ -0,0 +1,65 @@
+import { App, FuzzySuggestModal, TFile } from 'obsidian';
+import type { TodoItem } from '../core/types';
+import { HeadingSelectModal } from './heading-select-modal';
+import { removeTodoLine, insertTodoAtEnd } from '../core/todo-transformer';
+
+export class NoteSelectModal extends FuzzySuggestModal<TFile> {
+	private todo: TodoItem;
+	private sourceFile: TFile;
+
+	constructor(app: App, todo: TodoItem, sourceFile: TFile) {
+		super(app);
+		this.todo = todo;
+		this.sourceFile = sourceFile;
+		this.setPlaceholder('Select a note to move the todo to...');
+	}
+
+	getItems(): TFile[] {
+		return this.app.vault.getMarkdownFiles();
+	}
+
+	getItemText(file: TFile): string {
+		return file.path;
+	}
+
+	async onChooseItem(file: TFile): Promise<void> {
+		// Get headings from the target file
+		const fileCache = this.app.metadataCache.getFileCache(file);
+		const headings = fileCache?.headings ?? [];
+
+		if (headings.length > 0) {
+			// Show heading selection modal
+			new HeadingSelectModal(
+				this.app,
+				this.todo,
+				this.sourceFile,
+				file,
+				headings
+			).open();
+		} else {
+			// No headings - move directly to end of file
+			await this.moveTodo(file);
+		}
+	}
+
+	private async moveTodo(targetFile: TFile, headingLineNumber?: number, nextHeadingLineNumber?: number): Promise<void> {
+		const todoLine = this.todo.rawLine;
+
+		// Remove from source file
+		await this.app.vault.process(this.sourceFile, (content) => {
+			return removeTodoLine(content, this.todo.lineNumber);
+		});
+
+		// Add to target file
+		if (headingLineNumber !== undefined) {
+			const { insertTodoUnderHeading } = await import('../core/todo-transformer');
+			await this.app.vault.process(targetFile, (content) => {
+				return insertTodoUnderHeading(content, headingLineNumber, todoLine, nextHeadingLineNumber);
+			});
+		} else {
+			await this.app.vault.process(targetFile, (content) => {
+				return insertTodoAtEnd(content, todoLine);
+			});
+		}
+	}
+}

src/settings.ts

@@ -1,5 +1,5 @@
 import {App, PluginSettingTab, Setting} from "obsidian";
-import MyPlugin from "./main";
+import TodoTrackerPlugin from "./main";
 
 export interface MyPluginSettings {
 	mySetting: string;
@@ -10,9 +10,9 @@ export const DEFAULT_SETTINGS: MyPluginSettings = {
 }
 
 export class SampleSettingTab extends PluginSettingTab {
-	plugin: MyPlugin;
+	plugin: TodoTrackerPlugin;
 
-	constructor(app: App, plugin: MyPlugin) {
+	constructor(app: App, plugin: TodoTrackerPlugin) {
 		super(app, plugin);
 		this.plugin = plugin;
 	}

src/views/todo-item-component.ts

@@ -0,0 +1,55 @@
+import { Menu, setIcon } from 'obsidian';
+import type { TodoItem } from '../core/types';
+
+export interface TodoItemCallbacks {
+	onToggle: () => void;
+	onMoveClick: () => void;
+}
+
+/**
+ * Creates a DOM element for a todo item with checkbox and menu.
+ */
+export function createTodoItemEl(
+	container: HTMLElement,
+	todo: TodoItem,
+	callbacks: TodoItemCallbacks
+): HTMLElement {
+	const itemEl = container.createEl('li', { cls: 'todo-tracker-item' });
+
+	// Checkbox
+	const checkboxEl = itemEl.createEl('input', { type: 'checkbox' });
+	checkboxEl.checked = todo.completed;
+	checkboxEl.addEventListener('change', () => {
+		callbacks.onToggle();
+	});
+
+	// Text content
+	const textEl = itemEl.createEl('span', { cls: 'todo-tracker-item-text' });
+	textEl.setText(todo.text);
+	if (todo.completed) {
+		textEl.addClass('todo-tracker-item-completed');
+	}
+
+	// Menu button (ellipsis)
+	const menuBtn = itemEl.createEl('button', { cls: 'todo-tracker-menu-btn' });
+	setIcon(menuBtn, 'more-vertical');
+	menuBtn.setAttribute('aria-label', 'Todo options');
+
+	menuBtn.addEventListener('click', (evt) => {
+		evt.stopPropagation();
+
+		const menu = new Menu();
+		menu.addItem((item) => {
+			item
+				.setTitle('Move to...')
+				.setIcon('arrow-right')
+				.onClick(() => {
+					callbacks.onMoveClick();
+				});
+		});
+
+		menu.showAtMouseEvent(evt);
+	});
+
+	return itemEl;
+}

src/views/todo-sidebar-view.ts

@@ -0,0 +1,117 @@
+import { ItemView, TFile, WorkspaceLeaf } from 'obsidian';
+import type { TodoItem } from '../core/types';
+import { parseTodos } from '../core/todo-parser';
+import { toggleTodo } from '../core/todo-transformer';
+import { createTodoItemEl } from './todo-item-component';
+
+export const TODO_VIEW_TYPE = 'todo-tracker-view';
+
+export class TodoSidebarView extends ItemView {
+	private currentFile: TFile | null = null;
+
+	constructor(leaf: WorkspaceLeaf) {
+		super(leaf);
+	}
+
+	getViewType(): string {
+		return TODO_VIEW_TYPE;
+	}
+
+	getDisplayText(): string {
+		return 'Todo Tracker';
+	}
+
+	getIcon(): string {
+		return 'check-square';
+	}
+
+	async onOpen(): Promise<void> {
+		await this.refresh();
+
+		// Listen for active leaf changes
+		this.registerEvent(
+			this.app.workspace.on('active-leaf-change', () => {
+				this.refresh();
+			})
+		);
+
+		// Listen for file modifications
+		this.registerEvent(
+			this.app.vault.on('modify', (file) => {
+				if (this.currentFile && file.path === this.currentFile.path) {
+					this.refresh();
+				}
+			})
+		);
+	}
+
+	async onClose(): Promise<void> {
+		// Cleanup is handled automatically by registerEvent
+	}
+
+	async refresh(): Promise<void> {
+		const activeFile = this.app.workspace.getActiveFile();
+
+		// Check if it's a markdown file
+		if (!activeFile || activeFile.extension !== 'md') {
+			this.currentFile = null;
+			this.renderEmpty('Open a markdown file to see its todos');
+			return;
+		}
+
+		this.currentFile = activeFile;
+
+		const content = await this.app.vault.read(activeFile);
+		const { todos } = parseTodos(content);
+
+		if (todos.length === 0) {
+			this.renderEmpty('No todos in this note');
+			return;
+		}
+
+		this.renderTodos(todos, activeFile);
+	}
+
+	private renderEmpty(message: string): void {
+		const container = this.contentEl;
+		container.empty();
+		container.addClass('todo-tracker-container');
+
+		const emptyEl = container.createDiv({ cls: 'todo-tracker-empty' });
+		emptyEl.setText(message);
+	}
+
+	private renderTodos(todos: TodoItem[], file: TFile): void {
+		const container = this.contentEl;
+		container.empty();
+		container.addClass('todo-tracker-container');
+
+		// Header with file name
+		const headerEl = container.createDiv({ cls: 'todo-tracker-header' });
+		headerEl.setText(file.basename);
+
+		// Todo list
+		const listEl = container.createEl('ul', { cls: 'todo-tracker-list' });
+
+		for (const todo of todos) {
+			const itemEl = createTodoItemEl(listEl, todo, {
+				onToggle: () => this.handleToggle(file, todo),
+				onMoveClick: () => this.handleMoveClick(todo, file),
+			});
+			listEl.appendChild(itemEl);
+		}
+	}
+
+	private async handleToggle(file: TFile, todo: TodoItem): Promise<void> {
+		await this.app.vault.process(file, (content) => {
+			return toggleTodo(content, todo.lineNumber);
+		});
+	}
+
+	private handleMoveClick(todo: TodoItem, file: TFile): void {
+		// Import dynamically to avoid circular dependencies
+		import('../modals/note-select-modal').then(({ NoteSelectModal }) => {
+			new NoteSelectModal(this.app, todo, file).open();
+		});
+	}
+}

styles.css

@@ -1,8 +1,77 @@
-/*
+/* Todo Tracker Styles */
 
-This CSS file will be included with your plugin, and
-available in the app when your plugin is enabled.
+.todo-tracker-container {
+	padding: 10px;
+}
 
-If your plugin does not need CSS, delete this file.
+.todo-tracker-header {
+	font-weight: 600;
+	font-size: 14px;
+	padding-bottom: 10px;
+	border-bottom: 1px solid var(--background-modifier-border);
+	margin-bottom: 10px;
+	color: var(--text-muted);
+}
 
-*/
+.todo-tracker-empty {
+	color: var(--text-muted);
+	font-style: italic;
+	padding: 20px 0;
+	text-align: center;
+}
+
+.todo-tracker-list {
+	list-style: none;
+	padding: 0;
+	margin: 0;
+}
+
+.todo-tracker-item {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	padding: 6px 4px;
+	border-radius: 4px;
+}
+
+.todo-tracker-item:hover {
+	background-color: var(--background-modifier-hover);
+}
+
+.todo-tracker-item input[type="checkbox"] {
+	flex-shrink: 0;
+	cursor: pointer;
+}
+
+.todo-tracker-item-text {
+	flex: 1;
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+}
+
+.todo-tracker-item-completed {
+	text-decoration: line-through;
+	color: var(--text-muted);
+}
+
+.todo-tracker-menu-btn {
+	flex-shrink: 0;
+	background: none;
+	border: none;
+	padding: 4px;
+	border-radius: 4px;
+	cursor: pointer;
+	color: var(--text-muted);
+	opacity: 0;
+	transition: opacity 0.15s ease;
+}
+
+.todo-tracker-item:hover .todo-tracker-menu-btn {
+	opacity: 1;
+}
+
+.todo-tracker-menu-btn:hover {
+	background-color: var(--background-modifier-hover);
+	color: var(--text-normal);
+}

vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	test: {
+		include: ['src/**/*.test.ts'],
+		environment: 'node',
+	},
+});