package models

import (
	"time"

	"gorm.io/gorm"
)

// AlertRule 告警规则模型
type AlertRule struct {
	ID          uint           `gorm:"primarykey" json:"id"`
	Name        string         `gorm:"size:128;not null" json:"name"`
	Description string         `gorm:"size:500" json:"description"`
	Type        string         `gorm:"size:32;not null" json:"type"` // metric, log, event
	Source      string         `gorm:"size:64;not null" json:"source"` // prometheus, zabbix, custom
	Expression  string         `gorm:"type:text;not null" json:"expression"`
	Severity    string         `gorm:"size:32;default:warning" json:"severity"` // info, warning, critical
	Duration    int            `json:"duration"` // 持续时间(秒)
	Enabled     bool           `gorm:"default:true" json:"enabled"`
	Labels      string         `gorm:"type:text" json:"labels"` // JSON
	Annotations string         `gorm:"type:text" json:"annotations"` // JSON
	NotifyChannels string      `gorm:"type:text" json:"notify_channels"` // JSON
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (AlertRule) TableName() string {
	return "alert_rules"
}

// AlertEvent 告警事件模型
type AlertEvent struct {
	ID          uint           `gorm:"primarykey" json:"id"`
	RuleID      uint           `json:"rule_id"`
	RuleName    string         `gorm:"size:128" json:"rule_name"`
	Severity    string         `gorm:"size:32" json:"severity"`
	Status      string         `gorm:"size:32;default:firing" json:"status"` // firing, resolved
	Target      string         `gorm:"size:255" json:"target"`
	Message     string         `gorm:"type:text" json:"message"`
	Value       float64        `json:"value"`
	Labels      string         `gorm:"type:text" json:"labels"`
	StartedAt   time.Time      `json:"started_at"`
	ResolvedAt  *time.Time     `json:"resolved_at"`
	Acknowledged bool          `json:"acknowledged"`
	AcknowledgedBy *uint       `json:"acknowledged_by"`
	AcknowledgedAt *time.Time  `json:"acknowledged_at"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`

	// 关联
	Rule *AlertRule `json:"rule,omitempty"`
}

// TableName 表名
func (AlertEvent) TableName() string {
	return "alert_events"
}

// NotifyChannel 通知渠道模型
type NotifyChannel struct {
	ID       uint   `gorm:"primarykey" json:"id"`
	Name     string `gorm:"size:64;not null" json:"name"`
	Type     string `gorm:"size:32;not null" json:"type"` // email, sms, webhook, dingtalk, wechat
	Config   string `gorm:"type:text" json:"config"` // JSON
	Enabled  bool   `gorm:"default:true" json:"enabled"`
	TestStatus string `gorm:"size:32" json:"test_status"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (NotifyChannel) TableName() string {
	return "notify_channels"
}

// MetricData 监控指标数据
type MetricData struct {
	ID        uint      `gorm:"primarykey" json:"id"`
	ServerID  *uint     `json:"server_id"`
	ClusterID *uint     `json:"cluster_id"`
	Name      string    `gorm:"size:64" json:"name"`
	Value     float64   `json:"value"`
	Labels    string    `gorm:"type:text" json:"labels"`
	Timestamp time.Time `json:"timestamp"`
}

// TableName 表名
func (MetricData) TableName() string {
	return "metric_data"
}

// CreateAlertRuleRequest 创建告警规则请求
type CreateAlertRuleRequest struct {
	Name           string   `json:"name" binding:"required"`
	Description    string   `json:"description"`
	Type           string   `json:"type" binding:"required,oneof=metric log event"`
	Source         string   `json:"source" binding:"required"`
	Expression     string   `json:"expression" binding:"required"`
	Severity       string   `json:"severity" binding:"omitempty,oneof=info warning critical"`
	Duration       int      `json:"duration"`
	Labels         string   `json:"labels"`
	Annotations    string   `json:"annotations"`
	NotifyChannels []string `json:"notify_channels"`
}

// UpdateAlertRuleRequest 更新告警规则请求
type UpdateAlertRuleRequest struct {
	Name           string   `json:"name"`
	Description    string   `json:"description"`
	Expression     string   `json:"expression"`
	Severity       string   `json:"severity" binding:"omitempty,oneof=info warning critical"`
	Duration       int      `json:"duration"`
	Enabled        *bool    `json:"enabled"`
	Labels         string   `json:"labels"`
	Annotations    string   `json:"annotations"`
	NotifyChannels []string `json:"notify_channels"`
}

// AlertStats 告警统计
type AlertStats struct {
	Total       int64 `json:"total"`
	Firing      int64 `json:"firing"`
	Resolved    int64 `json:"resolved"`
	Critical    int64 `json:"critical"`
	Warning     int64 `json:"warning"`
	Info        int64 `json:"info"`
	TodayCount  int64 `json:"today_count"`
	WeekCount   int64 `json:"week_count"`
}

// AcknowledgeAlertRequest 确认告警请求
type AcknowledgeAlertRequest struct {
	Message string `json:"message"`
}