package models

import "sync"

type Device struct {
	DeviceID            string      `json:"device_id"`
	Hostname            string      `json:"hostname,omitempty"`
	IP                  string      `json:"ip"`
	AgentPort           int         `json:"agent_port"`
	MediaPort           int         `json:"media_port"`
	DeviceAlias         string      `json:"device_alias,omitempty"`
	DeviceName          string      `json:"device_name"`
	InstanceName        string      `json:"instance_name,omitempty"`
	InstanceDisplayName string      `json:"instance_display_name,omitempty"`
	Version             string      `json:"version"`
	BuildID             string      `json:"build_id,omitempty"`
	GitSha              string      `json:"git_sha"`
	UptimeSec           int64       `json:"uptime_sec,omitempty"`
	LastSeenMs          int64       `json:"last_seen_ms"`
	Online              bool        `json:"online"`
	Graphs              interface{} `json:"graphs,omitempty"` // 摘要或详情
}

type DeviceRegistry struct {
	Mu      sync.RWMutex
	Devices map[string]*Device
}

func NewDeviceRegistry() *DeviceRegistry {
	return &DeviceRegistry{
		Devices: make(map[string]*Device),
	}
}

func (d *Device) DisplayName() string {
	if d == nil {
		return ""
	}
	if d.DeviceAlias != "" {
		return d.DeviceAlias
	}
	if d.DeviceName != "" {
		return d.DeviceName
	}
	if d.Hostname != "" {
		return d.Hostname
	}
	if d.DeviceID != "" {
		return d.DeviceID
	}
	return "-"
}

func (d *Device) TechnicalName() string {
	if d == nil {
		return ""
	}
	if d.Hostname != "" && d.Hostname != d.DeviceAlias {
		return d.Hostname
	}
	if d.DeviceName != "" && d.DeviceName != d.DeviceAlias {
		return d.DeviceName
	}
	return ""
}