package edge_node

import (
	"time"

	common "git.ilapage.cn/ila/yovision/Sense/server/common/models"
)

const (
	StatusOnline     = "online"
	StatusOffline    = "offline"
	StatusRecovering = "recovering"

	ChannelReady       = "ready"
	ChannelUnavailable = "unavailable"
	BackfillIdle       = "idle"
	BackfillPending    = "pending"
)

// Node is the Sense-owned last-known projection of one edge runtime. It is
// deliberately not a shared identity or a cross-product protocol model.
type Node struct {
	ID                  string    `gorm:"size:64;primaryKey" json:"id"`
	Name                string    `gorm:"size:128;not null" json:"name"`
	Location            string    `gorm:"size:256;not null;default:''" json:"location"`
	RuntimeVersion      string    `gorm:"size:64;not null;default:''" json:"runtimeVersion"`
	ModelVersion        string    `gorm:"size:64;not null;default:''" json:"modelVersion"`
	StartedAt           time.Time `gorm:"not null" json:"startedAt"`
	LastHeartbeatAt     time.Time `gorm:"not null;index" json:"lastHeartbeatAt"`
	LastCollectedAt     time.Time `gorm:"not null" json:"lastCollectedAt"`
	LoadUsed            int       `gorm:"not null;default:0" json:"loadUsed"`
	LoadCapacity        int       `gorm:"not null;default:0" json:"loadCapacity"`
	ControlTunnelStatus string    `gorm:"size:32;not null;default:'unavailable'" json:"controlTunnelStatus"`
	ControlTunnelDetail string    `gorm:"size:256;not null;default:''" json:"controlTunnelDetail"`
	ControlLatencyMs    int       `gorm:"not null;default:0" json:"controlLatencyMs"`
	VideoPlaneStatus    string    `gorm:"size:32;not null;default:'unavailable'" json:"videoPlaneStatus"`
	VideoPlaneDetail    string    `gorm:"size:256;not null;default:''" json:"videoPlaneDetail"`
	ActiveStreamCount   int       `gorm:"not null;default:0" json:"activeStreamCount"`
	BackfillStatus      string    `gorm:"size:32;not null;default:'idle'" json:"backfillStatus"`
	BackfillQueueDepth  int       `gorm:"not null;default:0" json:"backfillQueueDepth"`
	RecoveryPhase       string    `gorm:"size:32;not null;default:''" json:"recoveryPhase"`
	ProjectionVersion   int64     `gorm:"not null;default:1" json:"projectionVersion"`
	common.ControlBy
	common.ModelTime
}

func (Node) TableName() string { return "sense_edge_nodes" }

// Event records projection state transitions without storing credentials or
// raw heartbeat payloads.
type Event struct {
	ID         uint64    `gorm:"primaryKey;autoIncrement" json:"id"`
	NodeID     string    `gorm:"size:64;not null;index" json:"nodeId"`
	EventType  string    `gorm:"size:32;not null;index" json:"eventType"`
	FromStatus string    `gorm:"size:32;not null;default:''" json:"fromStatus"`
	ToStatus   string    `gorm:"size:32;not null" json:"toStatus"`
	Detail     string    `gorm:"size:256;not null;default:''" json:"detail"`
	OccurredAt time.Time `gorm:"not null;index" json:"occurredAt"`
}

func (Event) TableName() string { return "sense_edge_node_events" }