module vshare

import os
import time

fn test_copy_to_clipboard_with_commands_returns_false_without_candidates() {
    assert copy_to_clipboard_with_commands('https://play.vlang.io/p/test', []) == false
}

fn test_copy_to_clipboard_with_commands_uses_the_first_working_command() {
    test_dir := os.join_path(os.vtmp_dir(), 'vshare_test_${os.getpid()}_${time.now().unix_micro()}')
    os.mkdir_all(test_dir)!
    defer {
        os.rmdir_all(test_dir) or {}
    }
    output_path := os.join_path(test_dir, 'clipboard.out')
    fake_clip := os.join_path(test_dir, fake_clipboard_executable_name())
    os.write_file(fake_clip, fake_clipboard_script())!
    $if !windows {
        os.chmod(fake_clip, 0o700)!
    }
    original_path := os.getenv('PATH')
    original_output_path := os.getenv('VSHARE_TEST_OUTPUT')
    new_path := if original_path.len == 0 {
        test_dir
    } else {
        '${test_dir}${os.path_delimiter}${original_path}'
    }
    os.setenv('PATH', new_path, true)
    os.setenv('VSHARE_TEST_OUTPUT', output_path, true)
    defer {
        os.setenv('PATH', original_path, true)
        if original_output_path.len == 0 {
            os.unsetenv('VSHARE_TEST_OUTPUT')
        } else {
            os.setenv('VSHARE_TEST_OUTPUT', original_output_path, true)
        }
    }
    assert copy_to_clipboard_with_commands('https://play.vlang.io/p/test', [
        ClipboardCommand{
            executable: 'missing-clipboard-command'
            command:    'missing-clipboard-command < @FILE@'
        },
        ClipboardCommand{
            executable: fake_clipboard_executable_name()
            command:    fake_clipboard_command()
        },
    ])
    output := os.read_file(output_path)!
    $if windows {
        assert output.trim_right('\r\n') == 'https://play.vlang.io/p/test'
    } $else {
        assert output == 'https://play.vlang.io/p/test'
    }
}

fn fake_clipboard_command() string {
    return '${fake_clipboard_executable_name()} < @FILE@'
}

fn fake_clipboard_executable_name() string {
    $if windows {
        return 'fakeclip.bat'
    } $else {
        return 'fakeclip'
    }
}

fn fake_clipboard_script() string {
    $if windows {
        return '@echo off\r\nmore > "%VSHARE_TEST_OUTPUT%"\r\n'
    } $else {
        return '#!/bin/sh\ncat > "\$VSHARE_TEST_OUTPUT"\n'
    }
}