use clap::{Args, Parser, Subcommand};
use std::path::PathBuf;

#[derive(Debug, Parser)]
#[command(name = "yarr")]
#[command(about = "A TUI for managing Sonarr")]
#[command(version)]
pub struct Cli {
    /// Path to config file
    #[arg(short, long, global = true)]
    pub config: Option<PathBuf>,

    /// Sonarr URL (overrides config file)
    #[arg(long, global = true, env = "YARR_SONARR_URL")]
    pub sonarr_url: Option<String>,

    /// Sonarr API key (overrides config file)
    #[arg(long, global = true, env = "YARR_SONARR_API_KEY")]
    pub sonarr_api_key: Option<String>,

    #[command(subcommand)]
    pub command: Option<Commands>,
}

#[derive(Debug, Subcommand)]
pub enum Commands {
    /// Add a new series
    Add(AddArgs),

    /// List series
    List(ListArgs),

    /// Start the TUI interface (default)
    Tui,

    /// Generate shell completions
    Completions {
        /// The shell to generate completions for
        #[arg(value_enum)]
        shell: clap_complete::Shell,
    },

    /// Configuration management
    Config(ConfigArgs),
}

#[derive(Debug, Args)]
pub struct AddArgs {
    /// Name of the series to add
    #[arg(short, long)]
    pub name: String,
}

#[derive(Debug, Args)]
pub struct ListArgs {
    /// Show only monitored series
    #[arg(short, long)]
    pub monitored: bool,
}

#[derive(Debug, Args)]
pub struct ConfigArgs {
    #[command(subcommand)]
    pub action: ConfigAction,
}

#[derive(Debug, Subcommand)]
pub enum ConfigAction {
    /// Show current configuration
    Show,

    /// Create a sample config file
    Init {
        /// Path where to create the config file
        #[arg(short, long)]
        path: Option<PathBuf>,
    },

    /// Show possible config file locations
    Paths,
}

impl Cli {
    pub fn generate_completions(shell: clap_complete::Shell) {
        let mut command = <Cli as clap::CommandFactory>::command();
        clap_complete::generate(
            shell,
            &mut command,
            env!("CARGO_BIN_NAME"),
            &mut std::io::stdout(),
        );
    }
}