// Copyright 2017 The Ebiten Authors
//
// 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 web

import (
	"strings"
	"syscall/js"
)

func IsBrowser() bool {
	return true
}

var (
	isIOSSafari     bool
	isAndroidChrome bool
)

func init() {
	nav := js.Global().Get("navigator")
	if !nav.Truthy() {
		return
	}
	userAgent := nav.Get("userAgent").String()
	isIOSSafari = strings.Contains(userAgent, "iPhone") || strings.Contains(userAgent, "iPad")
	isAndroidChrome = strings.Contains(userAgent, "Android") && strings.Contains(userAgent, "Chrome")
}

func IsMobileBrowser() bool {
	return isIOSSafari || isAndroidChrome
}