use anyhow::Result;
use tracing::info;

use crate::Router;

impl Router {
    /// Verify opkg is available, returning a clear error if not.
    pub fn opkg_check(&self) -> Result<()> {
        let (_, code) = self.run("test -x /usr/bin/opkg")?;
        if code != 0 {
            anyhow::bail!(
                "opkg not found at /usr/bin/opkg — this router's firmware may not \
                 support package management (TollGate requires a standard OpenWrt build)"
            );
        }
        Ok(())
    }

    /// `opkg update` — refresh package lists.
    pub fn opkg_update(&self) -> Result<()> {
        info!("[{}] opkg update", self.host);
        self.run_ok("/usr/bin/opkg update")?;
        Ok(())
    }

    /// Install a package, skipping if already installed.
    pub fn opkg_install(&self, package: &str) -> Result<()> {
        // Check if already installed to avoid unnecessary network traffic.
        let (_, code) = self.run(&format!("/usr/bin/opkg list-installed | grep -q '^{} '", package))?;
        if code == 0 {
            info!("[{}] {} already installed", self.host, package);
            return Ok(());
        }

        info!("[{}] opkg install {}", self.host, package);
        self.run_ok(&format!("/usr/bin/opkg install {}", package))?;
        Ok(())
    }

    /// Remove a package.
    pub fn opkg_remove(&self, package: &str) -> Result<()> {
        info!("[{}] opkg remove {}", self.host, package);
        self.run_ok(&format!("/usr/bin/opkg remove {}", package))?;
        Ok(())
    }
}