package models

import "time"

// All timestamps in the metrics tables are int64 unix seconds (events: unix
// milliseconds) so range queries behave the same on SQLite and Postgres.

// MetricSeries identifies one time series: a metric name plus a fixed label set
// reported by one service instance.
type MetricSeries struct {
	ID        uint   `gorm:"primaryKey" json:"id"`
	Service   string `gorm:"size:64;not null;uniqueIndex:ux_metric_series,priority:1" json:"service"`
	Instance  string `gorm:"size:128;not null;uniqueIndex:ux_metric_series,priority:2" json:"instance"`
	Name      string `gorm:"size:96;not null;uniqueIndex:ux_metric_series,priority:3;index" json:"name"`
	Labels    string `gorm:"size:512;not null;uniqueIndex:ux_metric_series,priority:4" json:"labels"` // canonical JSON object
	Kind      string `gorm:"size:16;not null" json:"kind"`                                            // counter|gauge|summary|histogram
	Bounds    string `gorm:"type:text" json:"bounds"`                                                 // JSON []float64, histograms only
	Help      string `gorm:"size:256" json:"help"`
	CreatedAt time.Time
	LastSeen  int64 `gorm:"index" json:"lastSeen"`
}

// MetricPoint is one aggregated bucket of a series. Resolution is the bucket
// width in seconds (60 = raw minute data, 3600 = hourly rollup).
type MetricPoint struct {
	SeriesID   uint    `gorm:"primaryKey;autoIncrement:false"`
	Resolution int     `gorm:"primaryKey;autoIncrement:false;index:idx_metric_points_res_bucket,priority:1"`
	Bucket     int64   `gorm:"primaryKey;autoIncrement:false;index:idx_metric_points_res_bucket,priority:2"`
	Count      int64   `gorm:"not null;default:0"`
	Sum        float64 `gorm:"not null;default:0"`
	Min        float64 `gorm:"not null;default:0"`
	Max        float64 `gorm:"not null;default:0"`
	Last       float64 `gorm:"not null;default:0"`
	Hist       string  `gorm:"type:text"` // JSON []uint64, histograms only
}

// ServiceInstance is one running process (indexer, scraper, the API itself)
// that reports telemetry. Every telemetry push counts as a heartbeat.
type ServiceInstance struct {
	ID                   uint      `gorm:"primaryKey" json:"id"`
	Service              string    `gorm:"size:64;not null;uniqueIndex:ux_service_instance,priority:1" json:"service"`
	Instance             string    `gorm:"size:128;not null;uniqueIndex:ux_service_instance,priority:2" json:"instance"`
	Version              string    `gorm:"size:64" json:"version"`
	Status               string    `gorm:"size:16" json:"status"` // self-reported: ok|degraded|error
	StatusMessage        string    `gorm:"size:512" json:"statusMessage"`
	StartedAt            int64     `json:"startedAt"`
	LastSeen             int64     `gorm:"index" json:"lastSeen"`
	HeartbeatIntervalSec int       `json:"heartbeatIntervalSec"`
	RemoteAddr           string    `gorm:"size:64" json:"remoteAddr"`
	Meta                 string    `gorm:"type:text" json:"meta"` // JSON object
	CreatedAt            time.Time `json:"createdAt"`
	UpdatedAt            time.Time `json:"updatedAt"`
}

// ServiceEvent is a log line reported by a service. Admin actions are recorded
// here too (service "main", fields.kind "audit").
type ServiceEvent struct {
	ID       uint   `gorm:"primaryKey" json:"id"`
	Service  string `gorm:"size:64;index:idx_service_events_svc_ts,priority:1" json:"service"`
	Instance string `gorm:"size:128" json:"instance"`
	Level    string `gorm:"size:8;index" json:"level"` // debug|info|warn|error
	Message  string `gorm:"size:1024" json:"message"`
	Fields   string `gorm:"type:text" json:"fields"`                                    // JSON object
	TS       int64  `gorm:"index:idx_service_events_svc_ts,priority:2;index" json:"ts"` // unix ms
}

// DailyTopItem counts how often something was requested on one UTC day
// (Kind "addon": addon lookups, Kind "search": search queries).
type DailyTopItem struct {
	Day   string `gorm:"primaryKey;size:10"` // YYYY-MM-DD
	Kind  string `gorm:"primaryKey;size:16"`
	Item  string `gorm:"primaryKey;size:128"`
	Count int64
}