utils.py

import csv
import sys
import termios
import tty

def load_tasks(file_path="tasks.csv"):
    """Load tasks from a CSV file and return a list of dictionaries."""
    tasks = []
    try:
        with open(file_path, "r", newline="", encoding="utf-8") as file:
            reader = csv.DictReader(file)
            for row in reader:
                # Convert string "True"/"False" to boolean
                row["is_complete"] = row["is_complete"] == "True"
                tasks.append(row)
    except FileNotFoundError:
        # File doesn't exist yet - that's okay! Return empty list
        print(f"Task file not found. Starting with empty task list.")
        return []

    return tasks

def save_tasks(tasks, file_path="tasks.csv"):
    """Save tasks to a CSV file."""
    with open(file_path, "w", newline="", encoding="utf-8") as file:
        fieldnames = ["label", "is_complete", "priority", "location"]
        writer = csv.DictWriter(file, fieldnames=fieldnames)
        writer.writeheader()

        for task in tasks:
            # Convert boolean back to string for CSV
            task_copy = task.copy()
            task_copy["is_complete"] = str(task["is_complete"])
            writer.writerow(task_copy)

    print(f"Saved {len(tasks)} tasks to {file_path}.")

def get_key():
    """Capture a single keypress, including arrow keys."""
    fd = sys.stdin.fileno()
    old_settings = termios.tcgetattr(fd)
    try:
        tty.setraw(sys.stdin.fileno())
        ch = sys.stdin.read(1)

        # Arrow keys send escape sequences: \x1b[A (up), \x1b[B (down), etc.
        if ch == '\x1b' and sys.stdin.read(1) == '[':
            arrow_keys = {'A': 'up', 'B': 'down', 'C': 'right', 'D': 'left'}
            return arrow_keys.get(sys.stdin.read(1), ch)

        # Special keys
        if ch in ('\r', '\n'):
            return 'enter'
        if ch in ('\x7f', '\x08'):
            return 'delete'
        if ch == '\x03':
            return 'exit'

        return ch
    finally:
        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)

def clear_screen():
    """Clear the terminal screen."""
    print("\033[2J\033[H", end="")