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package services
import (
"context"
"fmt"
"git.aiterp.net/lucifer/new-server/app/config"
"git.aiterp.net/lucifer/new-server/models"
"log"
"math"
"sort"
"strconv"
"strings"
"sync"
"time"
)
func StartEventHandler() {
config.EventChannel <- models.Event{Name: "LuciferStarted"}
go func() {
for event := range config.EventChannel {
responses := handleEvent(event)
for _, response := range responses {
handleEvent(response)
}
}
}()
// Generate TimeChanged event
go func() {
drift := time.Now().Add(time.Minute).Truncate(time.Minute).Sub(time.Now())
time.Sleep(drift + time.Millisecond*5)
for range time.NewTicker(time.Minute).C {
config.EventChannel <- models.Event{Name: "TimeChanged", Payload: map[string]string{
"weekdayName": time.Now().In(loc).Format("Monday"),
"month": time.Now().In(loc).Format("01"),
"year": time.Now().In(loc).Format("2006"),
}}
}
}()
}
var loc, _ = time.LoadLocation("Europe/Oslo")
var ctx = context.Background()
func handleEvent(event models.Event) (responses []models.Event) {
startTime := time.Now()
defer func() {
duration := time.Since(startTime)
if duration > time.Millisecond*250 {
log.Println(event.Name, "took long to handle:", duration)
}
}()
if !event.HasPayload("hour") {
event.AddPayload("hour", time.Now().In(loc).Format("15"))
}
if !event.HasPayload("minute") {
event.AddPayload("minute", time.Now().In(loc).Format("04"))
}
err := handleSpecial(event)
if err != nil {
log.Printf("Special event handler error (%s): %v", event.Name, err)
return
}
paramStrings := make([]string, 0, 8)
for key, value := range event.Payload {
paramStrings = append(paramStrings, fmt.Sprintf("%s=%s", key, value))
}
sort.Strings(paramStrings)
log.Printf("Event %s(%s)", event.Name, strings.Join(paramStrings, ", "))
handlers, err := config.EventHandlerRepository().FetchAll(ctx)
if err != nil {
log.Printf("Error fetchin' event halders: %s", err)
return
}
allDevices := make([]models.Device, 0, 16)
actions := make(map[int]models.EventAction, 16)
priorities := make(map[int]int, 16)
highestPriority := 0
var prioritizedEvent *models.Event
for _, handler := range handlers {
if handler.EventName != event.Name {
continue
}
devices, err := config.DeviceRepository().FetchByReference(ctx, handler.TargetKind, handler.TargetValue)
if err != nil {
log.Printf("Error fetchin' event devices: %s", err)
return
}
if !handler.MatchesEvent(event, devices) {
continue
}
if handler.Priority > highestPriority {
highestPriority = handler.Priority
prioritizedEvent = handler.Actions.FireEvent
}
for _, device := range devices {
_, ok := actions[device.ID]
if !ok {
allDevices = append(allDevices, device)
actions[device.ID] = handler.Actions
priorities[device.ID] = handler.Priority
} else if handler.Priority > priorities[device.ID] {
actions[device.ID] = handler.Actions
priorities[device.ID] = handler.Priority
}
}
}
if prioritizedEvent != nil {
responses = append(responses, *prioritizedEvent)
}
for i, device := range allDevices {
action := actions[device.ID]
newState := models.NewDeviceState{}
newState.Color = action.SetColor
newState.Power = action.SetPower
if action.SetIntensity != nil {
newState.Intensity = action.SetIntensity
} else if action.AddIntensity != nil {
newIntensity := math.Max(0, math.Min(1, device.State.Intensity+*action.AddIntensity))
newState.Intensity = &newIntensity
}
err = allDevices[i].SetState(newState)
if err != nil {
log.Println("Error updating state for device", device.ID, "err:", err)
}
}
config.PublishChannel <- allDevices
wg := sync.WaitGroup{}
for _, device := range allDevices {
wg.Add(1)
go func(device models.Device) {
err := config.DeviceRepository().Save(context.Background(), &device)
if err != nil {
log.Println("Failed to save device for state:", err)
}
wg.Done()
}(device)
}
wg.Wait()
return
}
func handleSpecial(event models.Event) error {
switch event.Name {
case models.ENBridgeConnected:
bridgeId, _ := strconv.Atoi(event.Payload["bridgeId"])
bridge, err := config.BridgeRepository().Find(ctx, bridgeId)
if err != nil {
return err
}
devices, err := config.DeviceRepository().FetchByReference(ctx, models.RKBridgeID, event.Payload["bridgeId"])
if err != nil {
return err
}
driver, err := config.DriverProvider().Provide(bridge.Driver)
if err != nil {
return err
}
return driver.Publish(ctx, bridge, devices)
default:
return nil
}
}