package entity

import (
	"strings"
	"time"
)

const (
	DeviceIOS     = "ios"
	DeviceAndroid = "android"
	DeviceHarmony = "harmony"
	DeviceWindows = "windows"
	DeviceMacOS   = "macos"
	DeviceWeb     = "web"
)

var deviceTypes = map[string]struct{}{
	DeviceIOS:     {},
	DeviceAndroid: {},
	DeviceHarmony: {},
	DeviceWindows: {},
	DeviceMacOS:   {},
	DeviceWeb:     {},
}

// UserDeviceLink is one user bound to one physical device (no app_id on this row).
type UserDeviceLink struct {
	ID           int64
	UserID       int64
	DeviceID     uint64
	LastLoginAt  time.Time
	LastActiveAt *time.Time
	CreatedAt    time.Time
}

// LoginDevice is the device snapshot supplied at login.
type LoginDevice struct {
	DeviceID   uint64
	AppID      uint8
	DeviceType string
	Platform   string
	DeviceName string
	AppVersion string
	Language   string
	RealIP     string
	IDFV       string
	AndroidID  string
}

func NormalizeDeviceType(s string) string {
	return strings.ToLower(strings.TrimSpace(s))
}

func ValidDeviceType(s string) bool {
	_, ok := deviceTypes[NormalizeDeviceType(s)]
	return ok
}

func DeviceTypeOf(d *LoginDevice) string {
	if d == nil {
		return ""
	}
	if t := NormalizeDeviceType(d.DeviceType); ValidDeviceType(t) {
		return t
	}
	return NormalizeDeviceType(d.Platform)
}