Implement daily stats

helpers/helpers.go

@@ -2,6 +2,9 @@ package helpers
 
 import (
 	"fmt"
+	"math"
+	"pool-stats/models"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -37,3 +40,41 @@ func FormatCreateDate(createdate string) string {
 	}
 	return "-"
 }
+
+func CalculateAverageHashrate(shares []models.ShareLog) float64 {
+	if len(shares) == 0 {
+		return 0.0
+	}
+
+	sort.Slice(shares, func(i, j int) bool {
+		return shares[i].CreateDate < shares[j].CreateDate
+	})
+
+	first := ParseCreateDate(shares[0].CreateDate)
+	last := ParseCreateDate(shares[len(shares)-1].CreateDate)
+	timeSpan := last.Sub(first).Seconds()
+	if timeSpan <= 0 {
+		return 0.0
+	}
+
+	var totalAssignedDiff float64
+	for _, s := range shares {
+		totalAssignedDiff += s.Diff
+	}
+
+	avgAssignedDiff := totalAssignedDiff / float64(len(shares))
+
+	// Hashrate = avg diff * 2^32 / avg time per share
+	hashrate := (avgAssignedDiff * math.Pow(2, 32)) / (timeSpan / float64(len(shares)))
+	return hashrate
+}
+
+func FormatHashrate(hps float64) string {
+	units := []string{"H/s", "kH/s", "MH/s", "GH/s", "TH/s", "PH/s", "EH/s"}
+	i := 0
+	for hps >= 1000 && i < len(units)-1 {
+		hps /= 1000
+		i++
+	}
+	return fmt.Sprintf("%.2f %s", hps, units[i])
+}