cmc/learn
My personal learning area.
clone: git clone https://gitbay.org/cmc/learn.git
0828f6d7fbf59165980e17d126b1c4730c0a3ee0
verified · cmc
author: Christian Cleberg <hello@cleberg.net> · 2025-05-05T23:51:06Z
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.about("Echoes tasks to a file") + .arg( + Arg::new("task") + .short('t') + .long("task") + .value_name("TASK") + .help("Sets the task to be saved") + .num_args(1..), + ) + .arg( + Arg::new("done") + .short('d') + .long("done") + .value_name("TASK_ID") + .help("Marks the specified task(s) as complete") + .num_args(1..), + ) + .get_matches(); + + let file_path = "tasks.txt"; + + // Handle task completion + if let Some(ids) = matches.get_many::<String>("done") { + let mut tasks = load_tasks(file_path); + let mut completed_tasks = Vec::new(); + for id in ids { + if let Ok(index) = id.parse::<usize>() { + if index > 0 && index <= tasks.len() { + tasks[index - 1].completed = true; // Mark task as complete + } else { + completed_tasks.push(id.clone()); // Collect invalid task IDs + } + } + } + save_tasks(file_path, &tasks); + + // Alert for nonexistent tasks + if !completed_tasks.is_empty() { + for id in completed_tasks { + println!("Task {} doesn't exist.", id); + } + } else { + println!("Tasks marked as complete."); + } + + // Display the updated task list + display_tasks(file_path); + } + + // Handle new tasks + if let Some(new_tasks) = matches.get_many::<String>("task") { + let mut tasks = load_tasks(file_path); + let next_id = tasks.len() + 1; // Determine the next task ID + for task_desc in new_tasks { + tasks.push(Task { + id: next_id, + description: task_desc.to_string(), + completed: false, + }); + } + save_tasks(file_path, &tasks); + println!("Tasks saved to {}", file_path); + + // Display the updated task list + display_tasks(file_path); + } + + // Display saved tasks if no new tasks or done tasks were provided + if !matches.contains_id("task") && !matches.contains_id("done") { + display_tasks(file_path); + } +} + +fn load_tasks(file_path: &str) -> Vec<Task> { + let mut tasks = Vec::new(); + if Path::new(file_path).exists() { + let contents = fs::read_to_string(file_path).expect("Unable to read file"); + for (id, line) in contents.lines().enumerate() { + let completed = line.starts_with("[X]"); + let description = line[4..].trim().to_string(); + tasks.push(Task { + id: id + 1, + description, + completed, + }); + } + } + tasks +} + +fn save_tasks(file_path: &str, tasks: &[Task]) { + let mut file = OpenOptions::new() + .create(true) + .write(true) + .truncate(true) // Clear the file before writing + .open(file_path) + .expect("Unable to open file"); + + for task in tasks { + writeln!(file, "{}", task.to_string()).expect("Unable to write to file"); + } +} + +fn display_tasks(file_path: &str) { + let tasks = load_tasks(file_path); + if tasks.is_empty() { + println!("No tasks saved yet."); + } else { + println!("Saved tasks:"); + for task in tasks { + // Pad the task ID to a width of 3 for alignment + println!("{:>3}: {}", task.id, task.to_string()); // Display task ID + } + } +}