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package main
import (
"fmt"
"log"
"time"
"xengineering.eu/homematic-go/homematic"
)
func HomematicRun(config HomematicConfig, tx chan MQTTMessage) {
req, inventory, err := Start(config.CCU)
if err != nil {
log.Fatalf("Failed startup process: %v", err)
}
cache := NewCache(tx)
pollingPeriod, err := time.ParseDuration(config.PollingPeriod)
if err != nil {
log.Fatalf("Failed to parse Homematic polling period: %v", err)
}
for {
start := time.Now()
states, _ := Poll(req, inventory)
cache.Update(states)
WaitUntil(start.Add(pollingPeriod))
}
}
func Start(ccu string) (homematic.Requester, homematic.Devices, error) {
var req homematic.Requester
var inventory homematic.Devices
var err error
req = homematic.NewRequester(ccu)
log.Printf("Created Homematic requester (%s).", ccu)
inventory, err = req.ListDevices()
if err != nil {
return req, inventory, fmt.Errorf("Failed getting initial device list: %w", err)
}
log.Printf("Retrieved Homematic inventory with %d devices.", len(inventory))
return req, inventory, nil
}
func Poll(req homematic.Requester, inventory homematic.Devices) (States, error) {
states := make(States)
for _, device := range inventory {
if device.Type == `SHUTTER_CONTACT` {
state, err := req.GetValue(device.Address)
if err != nil {
return states, fmt.Errorf("Failed to get value: %w", err)
}
states[device.Address] = state
}
}
return states, nil
}
func WaitUntil(deadline time.Time) {
duration := time.Until(deadline)
if duration > 0 {
time.Sleep(duration)
}
}
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