✨ Add tools.ParseDate

tools/parse_date.go

@@ -0,0 +1,45 @@
+package tools
+
+import (
+	"time"
+
+	dp "github.com/markusmobius/go-dateparser"
+	"github.com/markusmobius/go-dateparser/date"
+)
+
+const (
+	day = time.Hour * 24
+)
+
+// These are somewhat arbitrary, but reasonably useful min and max times
+var (
+	MinTime = time.Unix(-2208988800, 0) // Jan 1, 1900
+	MaxTime = MinTime.Add(1<<63 - 1)
+)
+
+func ParseDate(in string) (t time.Time, err error) {
+	if in == "min" {
+		return MinTime, nil
+	}
+	if in == "max" {
+		return MaxTime, nil
+	}
+
+	d, err := dp.Parse(nil, in)
+	if err != nil {
+		return
+	}
+	t = d.Time.Local()
+	trunc := time.Second
+	switch d.Period {
+	case date.Minute:
+		trunc = time.Minute
+	case date.Hour:
+		trunc = time.Hour
+	case date.Day:
+		trunc = day
+		// @todo Handle other cases separately
+	}
+	t = t.Truncate(trunc)
+	return
+}