package main

import (
	"time"
)

// Advanced monitoring and analytics
type MonitoringConfig struct {
	Prometheus struct {
		Enable bool   `json:"enable"`
		Port   int    `json:"port"`
		Path   string `json:"path"`
	} `json:"prometheus"`

	Grafana struct {
		Enable    bool   `json:"enable"`
		Dashboard string `json:"dashboard_url"`
	} `json:"grafana"`

	Logging struct {
		Level      string `json:"level"`
		Format     string `json:"format"` // json, text
		Output     string `json:"output"` // file, stdout, syslog
		Structured bool   `json:"structured"`
	} `json:"logging"`
}

// Metrics collection
type ServerMetrics struct {
	// Connection metrics
	TotalConnections     int64   `metric:"total_connections"`
	ActiveConnections    int     `metric:"active_connections"`
	ConnectionsPerSecond float64 `metric:"connections_per_second"`
	FailedConnections    int64   `metric:"failed_connections"`

	// Message metrics
	MessagesPerSecond float64 `metric:"messages_per_second"`
	TotalMessages     int64   `metric:"total_messages"`
	PrivateMessages   int64   `metric:"private_messages"`
	ChannelMessages   int64   `metric:"channel_messages"`

	// Channel metrics
	TotalChannels      int     `metric:"total_channels"`
	AverageChannelSize float64 `metric:"average_channel_size"`
	LargestChannel     int     `metric:"largest_channel"`

	// Performance metrics
	CPUUsage       float64       `metric:"cpu_usage"`
	MemoryUsage    int64         `metric:"memory_usage"`
	GoroutineCount int           `metric:"goroutine_count"`
	ResponseTime   time.Duration `metric:"response_time"`

	// Network metrics
	BytesSent      int64         `metric:"bytes_sent"`
	BytesReceived  int64         `metric:"bytes_received"`
	NetworkLatency time.Duration `metric:"network_latency"`
}

// Real-time analytics
type AnalyticsEngine struct {
	UserActivity     map[string]*UserActivityMetrics
	ChannelAnalytics map[string]*ChannelAnalytics
	NetworkHealth    *NetworkHealthMetrics
}

type UserActivityMetrics struct {
	MessagesPerHour []int          `json:"messages_per_hour"`
	ChannelsJoined  []string       `json:"channels_joined"`
	CommandsUsed    map[string]int `json:"commands_used"`
	ConnectionTime  time.Duration  `json:"connection_time"`
	LastActivity    time.Time      `json:"last_activity"`
}

type ChannelAnalytics struct {
	MessageCount    int64    `json:"message_count"`
	UniqueUsers     int      `json:"unique_users"`
	AverageUsers    float64  `json:"average_users"`
	PeakUsers       int      `json:"peak_users"`
	MostActiveUsers []string `json:"most_active_users"`
	TopicChanges    int      `json:"topic_changes"`
}

type NetworkHealthMetrics struct {
	Uptime            time.Duration `json:"uptime"`
	ServerLoad        float64       `json:"server_load"`
	ErrorRate         float64       `json:"error_rate"`
	ResponseTime      time.Duration `json:"response_time"`
	LinkedServerCount int           `json:"linked_servers"`
	NetworkSplit      bool          `json:"network_split"`
}

// Alert system
type AlertManager struct {
	Rules    []AlertRule    `json:"rules"`
	Channels []AlertChannel `json:"channels"`
}

type AlertRule struct {
	Name      string   `json:"name"`
	Condition string   `json:"condition"` // "cpu_usage > 80"
	Threshold float64  `json:"threshold"`
	Duration  int      `json:"duration"` // seconds
	Severity  string   `json:"severity"` // info, warning, critical
	Actions   []string `json:"actions"`
}

type AlertChannel struct {
	Type   string            `json:"type"` // email, slack, discord, webhook
	Config map[string]string `json:"config"`
}

// Performance profiling
func (s *Server) StartProfiling() {
	// Enable CPU and memory profiling
}

func (s *Server) GeneratePerformanceReport() *PerformanceReport {
	// Generate detailed performance report
	return &PerformanceReport{}
}

type PerformanceReport struct {
	Timestamp       time.Time      `json:"timestamp"`
	CPUProfile      []CPUSample    `json:"cpu_profile"`
	MemoryProfile   []MemorySample `json:"memory_profile"`
	Bottlenecks     []string       `json:"bottlenecks"`
	Recommendations []string       `json:"recommendations"`
}

type CPUSample struct {
	Function string  `json:"function"`
	Usage    float64 `json:"usage"`
}

type MemorySample struct {
	Object string `json:"object"`
	Size   int64  `json:"size"`
}