use std::{collections::HashSet, error::Error, path::PathBuf};

use fomod_manager::{
    instance::{files_to_install_mod, insert_mod_to_instance},
    types::{Link, RootConfig},
};

fn get_parent() -> PathBuf {
    PathBuf::from(file!()).parent().unwrap().to_owned()
}

fn load_root() -> RootConfig {
    RootConfig::load_from_file(get_parent().join("data/root_config_complex.toml")).unwrap()
}

#[test]
fn add_simple_mod() -> Result<(), Box<dyn Error>> {
    let root_config = load_root();
    let mut instance = root_config.load_instance_by_id("instance_minimal")?;
    let mod_to_install = root_config.mod_by_id("add_test_1").expect("Mod not found");
    let files_to_add = files_to_install_mod(&root_config, &instance, &mod_to_install)?;

    insert_mod_to_instance(&mut instance, &mod_to_install, &files_to_add, 0)?;

    let installed_mods = instance.mods();

    assert_eq!(installed_mods.len(), 1);

    let the_mod = installed_mods.first().expect("Asserted before");

    assert_eq!(the_mod.mod_id(), "add_test_1");
    assert_eq!(the_mod.priority(), 0);

    let expected_files: HashSet<_> = [Link::new("plugin.esp", "Data/plugin.esp")]
        .into_iter()
        .collect();

    assert_eq!(
        *the_mod.files(),
        expected_files,
        "Installed files missmatch"
    );

    Ok(())
}