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use super::Instance;
use crate::error::CobbleResult;
use crate::minecraft::launch::{build_launch_command, launch};
use crate::minecraft::launch_options::LaunchOptions;
use crate::minecraft::process_handle::GameProcessHandle;
use std::process::{Command, Stdio};

impl Instance {
    /// Builds the command that launches the game.
    /// It is required to install all game resources or the game will exit immediately.
    ///
    /// This function enables to consume to make modifications to the command.
    pub fn launch_command(&self, options: &LaunchOptions) -> CobbleResult<Command> {
        let version_data = self.read_version_data()?;

        let command = build_launch_command(
            &version_data,
            self.dot_minecraft_path(),
            self.libraries_path(),
            self.assets_path(),
            self.natives_path(),
            self.log_configs_path(),
            options,
        )?;

        Ok(command)
    }

    /// Launches the game.
    /// It is required to install all game resources or the game will exit immediately.
    /// Returns a handle to the game process.
    pub fn launch(&self, options: &LaunchOptions) -> CobbleResult<GameProcessHandle> {
        let mut command = self.launch_command(options)?;

        command
            .stdout(Stdio::null())
            .stdin(Stdio::null())
            .stderr(Stdio::null());

        launch(command)
    }
}