date and gz helper methods

date/date.go

@@ -0,0 +1,89 @@
+// Copyright 2025 Patial Tech (Ankit Patial).
+//
+// This file is part of code.patial.tech/go/appcore, which is MIT licensed.
+// See http://opensource.org/licenses/MIT
+
+package date
+
+import (
+	"time"
+)
+
+// ParseISODate ISO date format to utc
+func ParseISODate(dt string) (time.Time, error) {
+	d, err := time.Parse(time.RFC3339, dt)
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	return d.UTC(), nil
+}
+
+func CountWorkingDays(from, end time.Time) int {
+	workingDays := 0
+	start := from // from.AddDate(0, 0, 1)
+	for d := start; d.Before(end) || d.Equal(end); d = d.AddDate(0, 0, 1) {
+		weekday := d.Weekday()
+		if weekday != time.Saturday && weekday != time.Sunday {
+			workingDays++
+		}
+	}
+
+	return workingDays
+}
+
+func StartOfDay(date time.Time) time.Time {
+	year, month, day := date.Date()
+	return time.Date(year, month, day, 0, 0, 0, 0, date.Location())
+}
+
+func EndOfDay(date time.Time) time.Time {
+	year, month, day := date.Date()
+	return time.Date(year, month, day, 23, 59, 59, 0, date.Location())
+}
+
+func StartOfMonth(date time.Time) time.Time {
+	year, month, _ := date.Date()
+	return time.Date(year, month, 1, 0, 0, 0, 0, date.Location())
+}
+
+func EndOfMonth(date time.Time) time.Time {
+	return EndOfDay(date.AddDate(0, 1, -date.Day()))
+}
+
+func StartOfWeek(date time.Time) time.Time {
+	return StartOfDay(date.AddDate(0, 0, int(time.Sunday)-int(date.Weekday())))
+}
+
+func EndOfWeek(date time.Time) time.Time {
+	return EndOfDay(date.AddDate(0, 0, int(time.Saturday-date.Weekday())))
+}
+
+func StartOfYear(date time.Time) time.Time {
+	year, _, _ := date.Date()
+	return time.Date(year, 1, 1, 0, 0, 0, 0, date.Location())
+}
+
+func EndOfYear(date time.Time) time.Time {
+	return EndOfDay(date.AddDate(0, int(time.December-date.Month())+1, -date.Day()))
+}
+
+func LastWeek(date time.Time) time.Time {
+	return date.AddDate(0, 0, -7)
+}
+
+func LastMonth(date time.Time) time.Time {
+	return date.AddDate(0, -1, 0)
+}
+
+func SubtractMonths(date time.Time, m int) time.Time {
+	return date.AddDate(0, -m, 0)
+}
+
+func SubtractDays(date time.Time, d int) time.Time {
+	return date.AddDate(0, 0, -d)
+}
+
+func SubtractAYear(date time.Time) time.Time {
+	return date.AddDate(-1, 0, 0)
+}

go.mod

@@ -11,11 +11,11 @@ require (
 )
 
 require (
-	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.9 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
-	golang.org/x/net v0.34.0 // indirect
+	golang.org/x/net v0.41.0 // indirect
 	golang.org/x/sys v0.33.0 // indirect
 	golang.org/x/text v0.26.0 // indirect
 )

go.sum

@@ -2,6 +2,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
 github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
+github.com/gabriel-vasile/mimetype v1.4.9 h1:5k+WDwEsD9eTLL8Tz3L0VnmVh9QxGjRmjBvAG7U/oYY=
+github.com/gabriel-vasile/mimetype v1.4.9/go.mod h1:WnSQhFKJuBlRyLiKohA/2DtIlPFAbguNaG7QCHcyGok=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
 github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
@@ -26,6 +28,8 @@ golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
 golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
 golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
+golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
+golang.org/x/net v0.41.0/go.mod h1:B/K4NNqkfmg07DQYrbwvSluqCJOOXwUjeb/5lOisjbA=
 golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
 golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/text v0.26.0 h1:P42AVeLghgTYr4+xUnTRKDMqpar+PtX7KWuNQL21L8M=

gz/gz.go

@@ -0,0 +1,46 @@
+// Copyright 2025 Patial Tech (Ankit Patial).
+//
+// This file is part of code.patial.tech/go/appcore, which is MIT licensed.
+// See http://opensource.org/licenses/MIT
+
+package gz
+
+import (
+	"bytes"
+	"compress/gzip"
+	"io"
+)
+
+func Zip(data []byte) ([]byte, error) {
+	var b bytes.Buffer
+	gz := gzip.NewWriter(&b)
+	if _, err := gz.Write(data); err != nil {
+		return nil, err
+	}
+
+	if err := gz.Flush(); err != nil {
+		return nil, err
+	}
+
+	if err := gz.Close(); err != nil {
+		return nil, err
+	}
+
+	return b.Bytes(), nil
+}
+
+func UnZip(data []byte) ([]byte, error) {
+	b := bytes.NewBuffer(data)
+	var r io.Reader
+	r, err := gzip.NewReader(b)
+	if err != nil {
+		return nil, err
+	}
+
+	var resB bytes.Buffer
+	if _, err := resB.ReadFrom(r); err != nil {
+		return nil, err
+	}
+
+	return resB.Bytes(), nil
+}

ptr/ptr.go

@@ -22,7 +22,7 @@ func Str(v string) *string {
 	return &v
 }
 
-func NumStr(v *string) string {
+func GetStr(v *string) string {
 	if v == nil {
 		return ""
 	}