use clap::{Parser, Subcommand};
use serde::{Deserialize, Serialize};

#[derive(Parser)]
#[command(name = "todo")]
#[command(about = "A simple todo list manager")]
struct Cli {
    #[command(subcommand)]
    command: Commands,
}

#[derive(Subcommand)]
enum Commands {
    Add { task: String },
    List,
    Complete { id: usize },
    Remove { id: usize },
}

#[derive(Serialize, Deserialize, Debug)]
struct Task {
    id: usize,
    description: String,
    completed: bool,
}

#[derive(Serialize, Deserialize, Debug)]
struct TodoList {
    tasks: Vec<Task>,
    next_id: usize,
}

fn main() {
    let cli = Cli::parse();
    match cli.command {
        Commands::Add { task } => {
            println!("Adding task: {}", task);
        }
        Commands::List => {
            println!("Listing tasks");
        }
        Commands::Complete { id } => {
            println!("Completing task with id: {}", id);
        }
        Commands::Remove { id } => {
            println!("Removing task with id: {}", id);
        }
    }
}