package model

import (
	"time"
)

// AgentCredential 每台 Agent 独立凭证，只保存 bcrypt 哈希，明文仅在签发时返回。 // Logan.Li
type AgentCredential struct {
	ID          uint       `gorm:"primarykey" json:"id"`
	Hostname    string     `gorm:"size:255;uniqueIndex;not null" json:"hostname"`
	TokenPrefix string     `gorm:"size:32;uniqueIndex;not null" json:"token_prefix"`
	TokenHash   string     `gorm:"size:255;not null" json:"-"`
	Status      string     `gorm:"size:16;default:active;index" json:"status"`
	IssuedBy    string     `gorm:"size:128" json:"issued_by"`
	LastUsedAt  *time.Time `json:"last_used_at"`
	ExpiresAt   *time.Time `json:"expires_at"`
	RotatedAt   time.Time  `json:"rotated_at"`
	CreatedAt   time.Time  `json:"created_at"`
	UpdatedAt   time.Time  `json:"updated_at"`
}

func (AgentCredential) TableName() string { return "monitor_agent_credentials" }

// AgentReport Agent 上报的原始指标数据 // Logan.Li
type AgentReport struct {
	ID           uint    `gorm:"primarykey" json:"id"`
	Hostname     string  `gorm:"size:255;index;not null" json:"hostname"`
	CPUUsage     float64 `gorm:"type:decimal(6,2)" json:"cpu_usage"`
	CPUIOwait    float64 `gorm:"type:decimal(6,2)" json:"cpu_iowait"`
	CPUCores     int     `json:"cpu_cores"`
	Load1        float64 `gorm:"type:decimal(8,2)" json:"load1"`
	Load5        float64 `gorm:"type:decimal(8,2)" json:"load5"`
	Load15       float64 `gorm:"type:decimal(8,2)" json:"load15"`
	MemTotal     float64 `gorm:"type:decimal(10,2)" json:"mem_total"`
	MemUsed      float64 `gorm:"type:decimal(10,2)" json:"mem_used"`
	MemUsage     float64 `gorm:"type:decimal(6,2)" json:"mem_usage"`
	MemAvailable float64 `gorm:"type:decimal(10,2)" json:"mem_available"`
	MemSwapUsed  float64 `gorm:"type:decimal(10,2)" json:"mem_swap_used"`
	DiskInfo     string  `gorm:"type:text" json:"disk_info"`
	PortInfo     string  `gorm:"type:text" json:"port_info"`
	NetInfo      string  `gorm:"type:text" json:"net_info"`
	DiskIOInfo   string  `gorm:"type:text" json:"disk_io_info"`
	// ──── v2.0 新增字段 ────
	SwapInfo       string `gorm:"type:text" json:"swap_info"`        // Swap JSON
	ProcessTopInfo string `gorm:"type:text" json:"process_top_info"` // 进程 TOP JSON
	FDInfo         string `gorm:"type:text" json:"fd_info"`          // FD 句柄 JSON
	CSInfo         string `gorm:"type:text" json:"cs_info"`          // 上下文切换 JSON
	HeartbeatInfo  string `gorm:"type:text" json:"heartbeat_info"`   // Agent 心跳 JSON
	// ──────────────────────────
	ReportTime time.Time `json:"report_time"`
	CreatedAt  time.Time `json:"created_at"`
	UpdatedAt  time.Time `json:"updated_at"`
}

func (AgentReport) TableName() string {
	return "monitor_agent_reports"
}

// AgentLatestResponse Agent 最新状态（含服务器元信息）
type AgentLatestResponse struct {
	ServerID   uint    `json:"server_id"`
	Hostname   string  `json:"hostname"`
	IP         string  `json:"ip"`
	CPUUsage   float64 `json:"cpu_usage"`
	CPUCores   int     `json:"cpu_cores"`
	MemUsage   float64 `json:"mem_usage"`
	MemTotal   float64 `json:"mem_total"`
	MemUsed    float64 `json:"mem_used"`
	DiskUsage  float64 `json:"disk_usage"`
	DiskTotal  int64   `json:"disk_total"`
	DiskInfo   string  `json:"disk_info"`
	PortInfo   string  `json:"port_info"`
	NetInfo    string  `json:"net_info"`
	DiskIOInfo string  `json:"disk_io_info"`
	// ──── v2.0 新增 ────
	SwapInfo       string `json:"swap_info"`
	ProcessTopInfo string `json:"process_top_info"`
	FDInfo         string `json:"fd_info"`
	CSInfo         string `json:"cs_info"`
	HeartbeatInfo  string `json:"heartbeat_info"`
	// ─────────────────
	ReportTime   string `json:"report_time"`
	AgentVersion string `json:"agent_version"`
	AgentStatus  string `json:"agent_status"`
	OS           string `json:"os"`
	Kernel       string `json:"kernel"`
	Uptime       int64  `json:"uptime"`
	Region       string `json:"region"`
	HasAuth      bool   `json:"has_auth"`
}

// AgentReportRequest Agent 上报请求体
type AgentReportRequest struct {
	Hostname     string           `json:"hostname" binding:"required"`
	IP           string           `json:"ip"`
	Timestamp    string           `json:"timestamp"`
	AgentVersion string           `json:"agent_version"`
	CPU          CPUMetric        `json:"cpu"`
	Memory       MemMetric        `json:"memory"`
	Swap         *SwapMetric      `json:"swap,omitempty"`
	Disks        []DiskMetric     `json:"disks"`
	Ports        []PortMetric     `json:"ports"`
	Network      NetworkStatModel `json:"network"`
	DiskIO       DiskIOStatModel  `json:"disk_io"`
	System       *SystemStatModel `json:"system,omitempty"`
	// ──── v2.0 新增 ────
	ProcessTop      []ProcessMetric     `json:"process_top,omitempty"`
	FD              *FDMetric           `json:"fd,omitempty"`
	ContextSwitches *CSMetric           `json:"context_switches,omitempty"`
	Heartbeat       HeartbeatMetric     `json:"heartbeat"`
	ProbeResults    []HealthProbeResult `json:"probe_results,omitempty"` // v2.1 健康探针结果
}

// ──── v2.0 新增上报类型 ────

type SwapMetric struct {
	TotalGB      float64 `json:"total_gb"`
	UsedGB       float64 `json:"used_gb"`
	UsagePercent float64 `json:"usage_percent"`
}

type ProcessMetric struct {
	PID      int     `json:"pid"`
	Name     string  `json:"name"`
	Cmdline  string  `json:"cmdline"`
	User     string  `json:"user"`
	CPUPct   float64 `json:"cpu_pct"`
	MemPct   float64 `json:"mem_pct"`
	MemoryMB float64 `json:"memory_mb"`
	FDCount  int     `json:"fd_count"`
	Threads  int     `json:"threads"`
}

type FDMetric struct {
	Allocated int     `json:"allocated"`
	Max       int64   `json:"max"`
	UsagePct  float64 `json:"usage_pct"`
}

type CSMetric struct {
	CTXPerSec float64 `json:"ctx_per_sec"`
	IRQPerSec float64 `json:"irq_per_sec"`
}

type HeartbeatMetric struct {
	Version   string  `json:"version"`
	UptimeSec int64   `json:"uptime_sec"`
	LastErr   string  `json:"last_err,omitempty"`
	SelfCPU   float64 `json:"self_cpu_pct"`
	SelfRSSMB float64 `json:"self_rss_mb"`
	ReportSeq uint64  `json:"report_seq"`
}

// ──── 已有类型 ────

type SystemStatModel struct {
	OSVersion string `json:"os_version"`
	Kernel    string `json:"kernel"`
	Uptime    int64  `json:"uptime"`
}

type CPUMetric struct {
	UsagePercent float64 `json:"usage_percent"`
	IOWait       float64 `json:"iowait"`
	CoreCount    int     `json:"core_count"`
	Load1        float64 `json:"load1"`
	Load5        float64 `json:"load5"`
	Load15       float64 `json:"load15"`
}

type MemMetric struct {
	TotalGB      float64 `json:"total_gb"`
	UsedGB       float64 `json:"used_gb"`
	CachedGB     float64 `json:"cached_gb"`
	AvailableGB  float64 `json:"available_gb"`
	SwapUsedGB   float64 `json:"swap_used_gb"`
	UsagePercent float64 `json:"usage_percent"`
}

type DiskMetric struct {
	Mount         string  `json:"mount"`
	Device        string  `json:"device"`
	TotalGB       float64 `json:"total_gb"`
	UsedGB        float64 `json:"used_gb"`
	UsagePercent  float64 `json:"usage_percent"`
	InodeUsagePct float64 `json:"inode_usage_pct"`
}

type PortMetric struct {
	Port     int    `json:"port"`
	Protocol string `json:"protocol"`
	Process  string `json:"process"`
	PID      int    `json:"pid"`
}

type NetworkStatModel struct {
	TCPEstablished int     `json:"tcp_established"`
	TCPTimeWait    int     `json:"tcp_time_wait"`
	TCPCloseWait   int     `json:"tcp_close_wait"`
	TCPTotal       int     `json:"tcp_total"`
	NicName        string  `json:"nic_name"`
	NetRxBPS       float64 `json:"net_rx_bps"`
	NetTxBPS       float64 `json:"net_tx_bps"`
	NetRxErrors    int64   `json:"net_rx_errors"`
	NetTxErrors    int64   `json:"net_tx_errors"`
}

type DiskIOStatModel struct {
	ReadBPS   float64 `json:"read_bps"`
	WriteBPS  float64 `json:"write_bps"`
	ReadIOPS  float64 `json:"read_iops"`
	WriteIOPS float64 `json:"write_iops"`
	Util      float64 `json:"util"`
}

// AgentPortPolicy 主机端口监控策略 // Logan.Li
type AgentPortPolicy struct {
	ID             uint   `gorm:"primarykey" json:"id"`
	Hostname       string `gorm:"size:255;uniqueIndex;not null" json:"hostname"`
	PortFilterMode string `gorm:"size:20;default:whitelist;not null" json:"port_filter_mode"` // whitelist / blacklist
	PortWhitelist  string `gorm:"type:text" json:"port_whitelist"`                            // JSON 数组，如 [80,443,3306,6379]
}

func (AgentPortPolicy) TableName() string {
	return "monitor_agent_port_policies"
}

// AgentPortPolicyDTO 前端交互用的端口策略格式（含已解析的数组）
type AgentPortPolicyDTO struct {
	Hostname       string `json:"hostname"`
	PortFilterMode string `json:"port_filter_mode"`
	PortWhitelist  []int  `json:"port_whitelist"`
}