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:     {},
}

// Device is a login device row for one user.
type Device struct {
	ID          int64 // table AUTO_INCREMENT; business key is (UserID, DeviceID)
	UserID      int64
	DeviceID    uint64
	DeviceType  string
	DeviceName  string
	AppVersion  string
	Language    string
	LastIP      string
	LastLoginAt time.Time
	CreatedAt   time.Time
}

// LoginDevice is the device snapshot supplied at login (not a table row).
type LoginDevice struct {
	DeviceID   uint64
	DeviceType string
	Platform   string // alias of DeviceType; HTTP still accepts `platform`
	DeviceName string
	AppVersion string
	Language   string
	RealIP     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)
}