use apt_ostree::lib::error::{AptOstreeError, AptOstreeResult};
use crate::commands::Command;

/// Container command - Container-related operations
pub struct ContainerCommand;

impl ContainerCommand {
    pub fn new() -> Self {
        Self
    }
}

impl Command for ContainerCommand {
    fn execute(&self, args: &[String]) -> AptOstreeResult<()> {
        if args.is_empty() || args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {
            self.show_help();
            return Ok(());
        }

        let subcommand = &args[0];
        let sub_args = &args[1..];

        match subcommand.as_str() {
            "install" => self.handle_install(sub_args),
            "uninstall" => self.handle_uninstall(sub_args),
            "list" => self.handle_list(sub_args),
            "info" => self.handle_info(sub_args),
            _ => {
                println!("Unknown container subcommand: {}", subcommand);
                println!("Use 'apt-ostree container --help' for available subcommands");
                Ok(())
            }
        }
    }

    fn name(&self) -> &'static str {
        "container"
    }

    fn description(&self) -> &'static str {
        "Container-related operations"
    }

    fn show_help(&self) {
        println!("Usage: apt-ostree container <SUBCOMMAND> [OPTIONS]");
        println!();
        println!("Container-related operations for apt-ostree.");
        println!("Manage containers and container images.");
        println!();
        println!("Subcommands:");
        println!("  install               Install container image");
        println!("  uninstall             Uninstall container image");
        println!("  list                  List installed containers");
        println!("  info                  Show container information");
        println!();
        println!("Options:");
        println!("  --help, -h            Show this help message");
        println!();
        println!("Examples:");
        println!("  apt-ostree container install docker://nginx:latest");
        println!("  apt-ostree container list");
        println!("  apt-ostree container info my-container");
    }
}

impl ContainerCommand {
    fn handle_install(&self, args: &[String]) -> AptOstreeResult<()> {
        if args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {
            println!("Usage: apt-ostree container install <IMAGE> [OPTIONS]");
            println!();
            println!("Install a container image.");
            println!();
            println!("Arguments:");
            println!("  IMAGE                Container image to install");
            println!();
            println!("Options:");
            println!("  --name <NAME>         Name for the container");
            println!("  --tag <TAG>          Specific tag to install");
            println!("  --help, -h           Show this help message");
            return Ok(());
        }

        if args.is_empty() {
            return Err(AptOstreeError::InvalidArgument("install requires an image argument".to_string()));
        }

        let image = &args[0];
        let mut name = None;
        let mut tag = None;

        let mut i = 1;
        while i < args.len() {
            match args[i].as_str() {
                "--name" => {
                    if i + 1 < args.len() {
                        name = Some(args[i + 1].clone());
                        i += 1;
                    }
                }
                "--tag" => {
                    if i + 1 < args.len() {
                        tag = Some(args[i + 1].clone());
                        i += 1;
                    }
                }
                _ => {}
            }
            i += 1;
        }

        println!("🐳 Installing Container Image");
        println!("=============================");
        println!("Image: {}", image);
        if let Some(ref n) = name {
            println!("Name: {}", n);
        }
        if let Some(ref t) = tag {
            println!("Tag: {}", t);
        }
        println!();

        println!("Status: Container installation initiated");
        println!("Next: Implement real container logic when daemon is ready");
        println!();
        println!("Note: This is a container management feature");

        Ok(())
    }

    fn handle_uninstall(&self, args: &[String]) -> AptOstreeResult<()> {
        if args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {
            println!("Usage: apt-ostree container uninstall <CONTAINER> [OPTIONS]");
            println!();
            println!("Uninstall a container image.");
            println!();
            println!("Arguments:");
            println!("  CONTAINER            Container name or ID to uninstall");
            println!();
            println!("Options:");
            println!("  --force              Force uninstallation");
            println!("  --help, -h           Show this help message");
            return Ok(());
        }

        if args.is_empty() {
            return Err(AptOstreeError::InvalidArgument("uninstall requires a container argument".to_string()));
        }

        let container = &args[0];
        let force = args.contains(&"--force".to_string());

        println!("🗑️  Uninstalling Container");
        println!("==========================");
        println!("Container: {}", container);
        if force {
            println!("Force: enabled");
        }
        println!();

        println!("Status: Container uninstallation initiated");
        println!("Next: Implement real container logic when daemon is ready");
        println!();
        println!("Note: This is a container management feature");

        Ok(())
    }

    fn handle_list(&self, args: &[String]) -> AptOstreeResult<()> {
        if args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {
            println!("Usage: apt-ostree container list [OPTIONS]");
            println!();
            println!("List installed containers.");
            println!();
            println!("Options:");
            println!("  --all                 Show all containers (including stopped)");
            println!("  --quiet               Show only container IDs");
            println!("  --help, -h            Show this help message");
            return Ok(());
        }

        let all = args.contains(&"--all".to_string());
        let quiet = args.contains(&"--quiet".to_string());

        println!("📋 Container List");
        println!("=================");
        if all {
            println!("Show all containers: enabled");
        }
        if quiet {
            println!("Quiet mode: enabled");
        }
        println!();

        println!("Status: Container listing initiated");
        println!("Next: Implement real container logic when daemon is ready");
        println!();
        println!("Note: This is a container management feature");

        Ok(())
    }

    fn handle_info(&self, args: &[String]) -> AptOstreeResult<()> {
        if args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {
            println!("Usage: apt-ostree container info <CONTAINER> [OPTIONS]");
            println!();
            println!("Show container information.");
            println!();
            println!("Arguments:");
            println!("  CONTAINER            Container name or ID");
            println!();
            println!("Options:");
            println!("  --help, -h           Show this help message");
            return Ok(());
        }

        if args.is_empty() {
            return Err(AptOstreeError::InvalidArgument("info requires a container argument".to_string()));
        }

        let container = &args[0];

        println!("ℹ️  Container Information");
        println!("=========================");
        println!("Container: {}", container);
        println!();

        println!("Status: Container info retrieval initiated");
        println!("Next: Implement real container logic when daemon is ready");
        println!();
        println!("Note: This is a container management feature");

        Ok(())
    }
}
