68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"os"
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"time"
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)
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type CacheEntry struct {
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Date string `json:"date""`
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GreenEnergyPercentage float32 `json:"green_energy_percentage"`
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PolledSmartEnergySummation float32 `json:"polled_smart_energy_summation"`
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}
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type CacheFile []CacheEntry
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func (config Config) updateCache() {
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now := time.Now()
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h, m, s := now.Clock()
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start := now.AddDate(0, 0, -7).Add(-(time.Duration(h)*time.Hour + time.Duration(m)*time.Minute + time.Duration(s)*time.Second))
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greenEnergyPercentage, err := config.historyAverageAndConvertToGreen(config.Sensors.FossilPercentage, start, now)
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if err != nil {
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fmt.Println("Error updating cached data for FossilPercentage -" + err.Error())
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return
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}
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historyPolledSmartEnergySummation, err := config.historyDelta(config.Sensors.PolledSmartEnergySummation, start, now)
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if err != nil {
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fmt.Println("Error updating cached data for PolledSmartEnergySummation -" + err.Error())
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return
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}
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var cacheEntries []CacheEntry
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for key, day := range greenEnergyPercentage {
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cacheEntries = append(cacheEntries, CacheEntry{
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Date: day.DayTime.Format("02/01"),
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GreenEnergyPercentage: greenEnergyPercentage[key].Value,
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PolledSmartEnergySummation: historyPolledSmartEnergySummation[key].Value,
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})
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}
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out, _ := json.Marshal(cacheEntries)
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err = os.WriteFile("cache.json", out, 0666)
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if err != nil {
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fmt.Println("Error saving cached data to file -" + err.Error())
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}
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}
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func readCache() (CacheFile, error) {
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data, err := os.ReadFile("cache.json")
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if err != nil {
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return CacheFile{}, err
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}
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var cache CacheFile
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err = json.Unmarshal(data, &cache)
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if err != nil {
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return CacheFile{}, err
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}
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return cache, nil
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}
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