module main

import os

fn test_trim_symlink_command_accepts_forwarded_subcommand() {
    assert trim_symlink_command([]string{}) == []string{}
    assert trim_symlink_command(['symlink']) == []string{}
    assert trim_symlink_command(['symlink', '~/.local/bin']) == ['~/.local/bin']
    assert trim_symlink_command(['~/.local/bin']) == ['~/.local/bin']
}

fn test_parse_symlink_options_defaults_to_default_location() {
    options := parse_symlink_options([]string{}) or { panic(err) }
    assert options == SymlinkOptions{}
}

fn test_parse_symlink_options_accepts_custom_directory() {
    options := parse_symlink_options(['symlink', '~/.local/bin']) or { panic(err) }
    assert options.github_ci == false
    assert options.link_dir == '~/.local/bin'
}

fn test_parse_symlink_options_supports_githubci() {
    options := parse_symlink_options(['symlink', '-githubci']) or { panic(err) }
    assert options.github_ci
    assert options.link_dir == ''
}

fn test_parse_symlink_options_rejects_multiple_arguments() {
    if options := parse_symlink_options(['symlink', '/tmp/bin', 'extra']) {
        assert false, 'expected an error, got ${options}'
    } else {
        assert err.msg() == symlink_usage
    }
}

fn test_normalized_link_dir_expands_tilde() {
    path := os.join_path('~', '.local', 'bin')
    expected := os.join_path(os.home_dir(), '.local', 'bin')
    assert normalized_link_dir(path) == expected
}

fn test_symlink_path_uses_platform_binary_name() {
    $if windows {
        assert symlink_path(r'C:\tools\vbin') == os.join_path(r'C:\tools\vbin', 'v.exe')
    } $else {
        assert symlink_path('/tmp/vbin') == os.join_path('/tmp/vbin', 'v')
    }
}