📌 Project Plan: Personal Task Manager (CLI App in Go)

A command-line application to manage tasks (like TODOs), with file-based persistence, concurrency features, and modular design.

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🎯 Goals

• Strengthen understanding of Go basics (structs, interfaces, slices, maps).
• Practice concurrency (goroutines, channels, worker pools).
• Work with file I/O (JSON, CSV, or custom format).
• Explore Go modules, packages, error handling, and testing.
• Implement a CLI with commands and subcommands.
• Gain experience with dependency management and project organization.

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🏗️ Features & Milestones

Phase 1: Core Task Management

• Define a Task struct (ID, Title, Description, Status, CreatedAt, DueDate).

• Store tasks in memory (slice/map).

• Implement CRUD operations:

  • add a task
  • list tasks
  • update task status
  • delete a task

Phase 2: File Persistence

• Save tasks to a JSON file on disk.
• Load tasks from file at startup.
• Implement export (CSV) and import commands.

Phase 3: CLI Interaction

• Implement a text-based menu system or command-line flags (task add "Buy milk").
• Support filtering tasks by status, due date, etc.
• Pretty-print tasks in tabular format.

Phase 4: Concurrency

• Use goroutines + channels for:

  • Running background reminders for due tasks.
  • Parallel file save/load (simulate worker pool).

• Add a "bulk import" that processes multiple files concurrently.

Phase 5: Enhancements

• Add task categories/tags.
• Add priority levels (low/medium/high).
• Support undo/redo (stack-based approach).
• Optional encryption for saved files (practice with crypto).

🧪 Testing Plan

• Unit tests for:

  • Adding/updating/deleting tasks
  • File read/write
  • Import/export

• Integration tests:

  • CLI command flow
  • Concurrency tests (timeouts, reminders)