//! Rules management command handler

use std::io;

pub fn handle_rules(
    action: &str,
    verbose: bool,
) -> io::Result<()> {
    match action {
        "list" => {
            if verbose {
                eprintln!("Listing available rule templates...");
            }

            println!("Available rule templates:");
            println!("  - trim_whitespace");
            println!("  - remove_duplicates");
            println!("  - normalize_quotes");
            println!("  - fix_indentation");
            println!("  - remove_comments");
            println!();
            println!("Usage:");
            println!("  anyrepair rules list");
            println!("  anyrepair rules add --id <rule_id> --format <format> --pattern <pattern> --replacement <replacement>");
            println!("  anyrepair rules remove <rule_id>");
            println!("  anyrepair rules enable <rule_id>");
            println!("  anyrepair rules disable <rule_id>");

            Ok(())
        }
        "show" => {
            if verbose {
                eprintln!("Showing rule templates...");
            }

            println!("Rule templates available for custom repair rules");
            println!("Use --config to specify custom rules");

            Ok(())
        }
        "add" => {
            if verbose {
                eprintln!("Adding new custom rule...");
            }
            println!("Error: Rule addition requires additional arguments:");
            println!("  anyrepair rules add --id <rule_id> --format <format> --pattern <pattern> --replacement <replacement> [--priority <priority>]");
            println!();
            println!("Example:");
            println!("  anyrepair rules add --id fix_trailing --format json --pattern ',\\s*}}' --replacement '}}' --priority 95");
            Err(io::Error::new(io::ErrorKind::InvalidInput, "Missing required arguments"))
        }
        "remove" => {
            if verbose {
                eprintln!("Removing custom rule...");
            }
            println!("Error: Rule removal requires a rule ID:");
            println!("  anyrepair rules remove <rule_id>");
            println!();
            println!("Example:");
            println!("  anyrepair rules remove fix_trailing");
            Err(io::Error::new(io::ErrorKind::InvalidInput, "Missing rule ID"))
        }
        "enable" => {
            if verbose {
                eprintln!("Enabling custom rule...");
            }
            println!("Error: Rule enable requires a rule ID:");
            println!("  anyrepair rules enable <rule_id>");
            println!();
            println!("Example:");
            println!("  anyrepair rules enable fix_trailing");
            Err(io::Error::new(io::ErrorKind::InvalidInput, "Missing rule ID"))
        }
        "disable" => {
            if verbose {
                eprintln!("Disabling custom rule...");
            }
            println!("Error: Rule disable requires a rule ID:");
            println!("  anyrepair rules disable <rule_id>");
            println!();
            println!("Example:");
            println!("  anyrepair rules disable fix_trailing");
            Err(io::Error::new(io::ErrorKind::InvalidInput, "Missing rule ID"))
        }
        _ => {
            Err(io::Error::new(
                io::ErrorKind::InvalidInput,
                format!("Unknown rules action: {}. Available actions: list, show, add, remove, enable, disable", action),
            ))
        }
    }
}
