use super::{Django, Link, Postgres, Store};
use clap::builder::styling::{AnsiColor, Effects, Styles};

use clap::{Parser, Subcommand};
use clap_complete::Shell;

/// A program for interacting with various dockerized applications
#[derive(Parser, Debug)]
#[command(version, about, long_about = None)]
#[command(styles = help_styles())]
pub struct Ahab {
    #[command(subcommand)]
    pub command: Commands,

    /// Print each docker command as it runs
    #[arg(short, long, global = true)]
    pub verbose: bool,

    /// Print only what was asked for, not the progress along the way
    #[arg(short, long, global = true, conflicts_with = "verbose")]
    pub quiet: bool,

    /// Print the docker commands that would run, without running them
    #[arg(long, global = true)]
    pub dry_run: bool,
}
#[derive(Debug, Subcommand)]
pub enum Commands {
    /// Django related subcommands
    Django {
        #[command(subcommand)]
        command: Django,
    },

    /// Postgres related subcommands
    Postgres {
        #[command(subcommand)]
        command: Postgres,
    },

    /// Out-of-repo store related subcommands
    Link {
        #[command(subcommand)]
        command: Link,
    },

    /// Show what ahab makes of this project
    Status {
        #[command(flatten)]
        store: Store,
    },

    /// Print a shell completion script on stdout
    Completions {
        /// Shell to generate the script for
        shell: Shell,
    },
}

// clap styles headers bold by default but adds no colour
fn help_styles() -> Styles {
    Styles::styled()
        .header(AnsiColor::Green.on_default() | Effects::BOLD)
        .usage(AnsiColor::Green.on_default() | Effects::BOLD)
        .literal(AnsiColor::Cyan.on_default() | Effects::BOLD)
        .placeholder(AnsiColor::Cyan.on_default())
}

#[cfg(test)]
mod tests {
    use super::Ahab;
    use clap::CommandFactory;

    #[test]
    fn the_command_is_well_formed() {
        Ahab::command().debug_assert();
    }
}