package appcontext

import (
	"encoding/json"
	"time"

	"github.com/AFASystems/presence/internal/pkg/kafkaclient"
)

// ServiceStatus represents the health of an external service (e.g. Kafka, database).
type ServiceStatus struct {
	Status  string `json:"status"`  // "up", "down", "unknown"
	Message string `json:"message,omitempty"`
}

type BaseHealth struct {
	Uptime        time.Duration `json:"uptime"`
	ActiveReaders []string      `json:"activeReaders" gorm:"type:jsonb"`
	ActiveWriters []string      `json:"activeWriters" gorm:"type:jsonb"`
	ActiveBeacons []string      `json:"activeBeacons" gorm:"type:jsonb"`
}

type DecoderHealth struct {
	BaseHealth
	// current active configs ? dont know yet how
}

type LocationHealth struct {
	BaseHealth
	ActiveSettings []Settings `json:"activeSettings" gorm:"type:jsonb"`
}

type BridgeHealth struct {
	BaseHealth
}

type Health struct {
	Location LocationHealth `json:"location" gorm:"embedded;embeddedPrefix:loc_"`
	Decoder  DecoderHealth  `json:"decoder" gorm:"embedded;embeddedPrefix:dec_"`
	Bridge   BridgeHealth   `json:"bridge" gorm:"embedded;embeddedPrefix:brg_"`
	Kafka    ServiceStatus  `json:"kafka"`
	Database ServiceStatus  `json:"database"`
}

func (b *BaseHealth) GetUptime(startTime time.Time) {
	b.Uptime = time.Since(startTime)
}

func (b *BaseHealth) GetActiveReaders(m *kafkaclient.KafkaManager) {
	b.ActiveReaders = m.GetReaders()
}

func (b *BaseHealth) GetActiveWriters(m *kafkaclient.KafkaManager) {
	b.ActiveWriters = m.GetWriters()
}

func (b *BaseHealth) GetActiveBeacons(m *AppState) {
	beacons := m.GetAllBeacons()
	for beacon := range beacons {
		b.ActiveBeacons = append(b.ActiveBeacons, beacon)
	}
}

func (d *DecoderHealth) Marshal() ([]byte, error) {
	return json.Marshal(d)
}

func (l *LocationHealth) Marshal() ([]byte, error) {
	return json.Marshal(l)
}

func (b *BridgeHealth) Marshal() ([]byte, error) {
	return json.Marshal(b)
}