extern crate bumpalo;
extern crate roc_collections;
extern crate roc_load;
extern crate roc_module;
extern crate tempfile;

use roc_command_utils::root_dir;
use std::env;
use std::path::PathBuf;

pub fn path_to_roc_binary() -> PathBuf {
    path_to_binary(if cfg!(windows) { "roc.exe" } else { "roc" })
}

pub fn path_to_binary(binary_name: &str) -> PathBuf {
    // Adapted from https://github.com/volta-cli/volta/blob/cefdf7436a15af3ce3a38b8fe53bb0cfdb37d3dd/tests/acceptance/support/sandbox.rs#L680
    // by the Volta Contributors - license information can be found in
    // the legal_details file in the root directory of this distribution.
    //
    // Thank you, Volta contributors!
    let mut path = env::var_os("CARGO_BIN_PATH")
            .map(PathBuf::from)
            .or_else(|| {
                env::current_exe().ok().map(|mut path| {
                    path.pop();
                    if path.ends_with("deps") {
                        path.pop();
                    }
                    path
                })
            })
            .unwrap_or_else(|| panic!("CARGO_BIN_PATH wasn't set, and couldn't be inferred from context. Can't run CLI tests."));

    path.push(binary_name);

    path
}

pub fn dir_from_root(dir_name: &str) -> PathBuf {
    let mut path = root_dir();

    path.extend(dir_name.split('/')); // Make slashes cross-target

    path
}

pub fn file_from_root(dir_name: &str, file_name: &str) -> PathBuf {
    let mut path = dir_from_root(dir_name);

    path.push(file_name);

    path
}