//go:build windows

// Copyright (c) 2026.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ui

import (
	"os"

	"golang.org/x/sys/windows"
)

func terminalSize() (int, int) {
	handle := windows.Handle(os.Stdout.Fd())
	var info windows.ConsoleScreenBufferInfo
	if err := windows.GetConsoleScreenBufferInfo(handle, &info); err != nil {
		return 80, 24
	}
	width := int(info.Window.Right - info.Window.Left + 1)
	height := int(info.Window.Bottom - info.Window.Top + 1)
	if width <= 0 || height <= 0 {
		return 80, 24
	}
	return width, height
}

func enableVirtualTerminalProcessing() {
	handle := windows.Handle(os.Stdout.Fd())
	var mode uint32
	if err := windows.GetConsoleMode(handle, &mode); err != nil {
		return
	}
	mode |= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
	_ = windows.SetConsoleMode(handle, mode)
}