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use std::process::exit;
use crate::{File, yes_or_no};
use crate::buildsystem::BuildSystem;


/// This is the best build system rusty-ci supports right now.
/// It writes the dependency installation instructions to a shell script file,
/// And tells you how to use them.
/// The process for building the master and the workers is set to the default.
pub struct BashBuildSystem;
impl BashBuildSystem {
    pub fn new() -> Self { Self {} }
}


impl BuildSystem for BashBuildSystem {
    /// Writes install script to `install.sh` for user to run
    fn install(&mut self) -> Result<(), String> {
        info!("Writing install file to `./install.sh`");
        File::write("install.sh", "#!/bin/sh

sudo apt-get install python3-dev -y
sudo apt-get install python3-pip -y
sudo apt-get install python3-venv -y

python3 -m venv venv
. venv/bin/activate; python3 -m pip install -U pip; python3 -m pip install 'buildbot[bundle]';
. venv/bin/activate; python3 -m pip install buildbot-worker setuptools-trial
")?;
        info!("Successfully wrote install file");
        warn!("To install dependencies run `install.sh`");
        warn!("Before building from a YAML file, be sure to run `. venv/bin/activate`");
        Ok(())
    }

    /// Prompts user to confirm they've already ran the install subcommand    
    fn prebuild(&mut self) -> Result<(), String> {
        if yes_or_no("Did you already run the install subcommand? (y/n) ") {
            Ok(())
        } else {
            error!("You must run the install subcommand before the build subcommand!");
            exit(0);
        }
    }

    fn install_python(&mut self) -> Result<(), String> {Ok(())}
    fn install_buildbot(&mut self) -> Result<(), String> {Ok(())}
}