diff --git a/dataext/lruMap_test.go b/dataext/lruMap_test.go index 802d6e7..4a439cc 100644 --- a/dataext/lruMap_test.go +++ b/dataext/lruMap_test.go @@ -1,7 +1,7 @@ package dataext import ( - "go.mongodb.org/mongo-driver/bson/primitive" + "gogs.mikescher.com/BlackForestBytes/goext/langext" "math/rand" "strconv" "testing" @@ -251,18 +251,21 @@ func randomKey() string { } func randomVal() LRUData { - v := primitive.NewObjectID() + v, err := langext.NewHexUUID() + if err != nil { + panic(err) + } return &v } func eq(a LRUData, b LRUData) bool { - v1, ok1 := a.(*primitive.ObjectID) - v2, ok2 := b.(*primitive.ObjectID) + v1, ok1 := a.(*string) + v2, ok2 := b.(*string) if ok1 && ok2 { if v1 == nil || v2 == nil { return false } - return v1.Hex() == v2.Hex() + return v1 == v2 } return false diff --git a/go.mod b/go.mod index 7586b97..ef6d022 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,9 @@ module gogs.mikescher.com/BlackForestBytes/goext go 1.19 + +require ( + golang.org/x/term v0.1.0 +) + +require golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..207eeaf --- /dev/null +++ b/go.sum @@ -0,0 +1,43 @@ +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +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/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= +github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM= +github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk= +github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= +github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= +github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= +github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc= +github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0= +github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk= +github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI= +github.com/xdg-go/scram v1.1.1/go.mod h1:RaEWvsqvNKKvBPvcKeFjrG2cJqOkHTiyTpzz23ni57g= +github.com/xdg-go/stringprep v1.0.3/go.mod h1:W3f5j4i+9rC0kuIEJL0ky1VpHXQU3ocBgklLGvcBnW8= +github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA= +go.mongodb.org/mongo-driver v1.10.3 h1:XDQEvmh6z1EUsXuIkXE9TaVeqHw6SwS1uf93jFs0HBA= +go.mongodb.org/mongo-driver v1.10.3/go.mod h1:z4XpeoU6w+9Vht+jAFyLgVrD+jGSQQe0+CBWFHNiHt8= +golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4= +golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= +golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4= +golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw= +golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= +golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/langext/bool.go b/langext/bool.go new file mode 100644 index 0000000..cc5dc74 --- /dev/null +++ b/langext/bool.go @@ -0,0 +1,9 @@ +package langext + +func FormatBool(v bool, strTrue string, strFalse string) string { + if v { + return strTrue + } else { + return strFalse + } +} diff --git a/langext/bytes.go b/langext/bytes.go index 50353b2..746d1a3 100644 --- a/langext/bytes.go +++ b/langext/bytes.go @@ -1,6 +1,9 @@ package langext -import "fmt" +import ( + "errors" + "fmt" +) func FormatBytesToSI(b uint64) string { const unit = 1000 @@ -14,3 +17,30 @@ func FormatBytesToSI(b uint64) string { } return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp]) } + +func BytesXOR(a []byte, b []byte) ([]byte, error) { + if len(a) != len(b) { + return nil, errors.New("length mismatch") + } + + r := make([]byte, len(a)) + + for i := 0; i < len(a); i++ { + r[i] = a[i] ^ b[i] + } + + return r, nil +} + +func FormatBytes(b int64) string { + const unit = 1024 + if b < unit { + return fmt.Sprintf("%d B", b) + } + div, exp := int64(unit), 0 + for n := b / unit; n >= unit; n /= unit { + div *= unit + exp++ + } + return fmt.Sprintf("%.1f %ciB", float64(b)/float64(div), "KMGTPE"[exp]) +} diff --git a/langext/generics.go b/langext/generics.go new file mode 100644 index 0000000..e295033 --- /dev/null +++ b/langext/generics.go @@ -0,0 +1,5 @@ +package langext + +type IntConstraint interface { + int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 +} diff --git a/langext/json.go b/langext/json.go new file mode 100644 index 0000000..13b0519 --- /dev/null +++ b/langext/json.go @@ -0,0 +1,65 @@ +package langext + +import ( + "bytes" + "encoding/json" + "fmt" +) + +type H map[string]any + +type A []any + +func TryPrettyPrintJson(str string) string { + var prettyJSON bytes.Buffer + if err := json.Indent(&prettyJSON, []byte(str), "", " "); err != nil { + return str + } + return prettyJSON.String() +} + +func PrettyPrintJson(str string) (string, bool) { + var prettyJSON bytes.Buffer + if err := json.Indent(&prettyJSON, []byte(str), "", " "); err != nil { + return str, false + } + return prettyJSON.String(), true +} + +func PatchJson[JV string | []byte](rawjson JV, key string, value any) (JV, error) { + var err error + + var jsonpayload map[string]any + err = json.Unmarshal([]byte(rawjson), &jsonpayload) + if err != nil { + return *new(JV), fmt.Errorf("failed to unmarshal payload: %w", err) + } + + jsonpayload[key] = value + + newjson, err := json.Marshal(jsonpayload) + if err != nil { + return *new(JV), fmt.Errorf("failed to re-marshal payload: %w", err) + } + + return JV(newjson), nil +} + +func PatchRemJson[JV string | []byte](rawjson JV, key string) (JV, error) { + var err error + + var jsonpayload map[string]any + err = json.Unmarshal([]byte(rawjson), &jsonpayload) + if err != nil { + return *new(JV), fmt.Errorf("failed to unmarshal payload: %w", err) + } + + delete(jsonpayload, key) + + newjson, err := json.Marshal(jsonpayload) + if err != nil { + return *new(JV), fmt.Errorf("failed to re-marshal payload: %w", err) + } + + return JV(newjson), nil +} diff --git a/langext/maps.go b/langext/maps.go new file mode 100644 index 0000000..a0e5b25 --- /dev/null +++ b/langext/maps.go @@ -0,0 +1,9 @@ +package langext + +func MapKeyArr[T comparable, V any](v map[T]V) []T { + result := make([]T, 0, len(v)) + for k := range v { + result = append(result, k) + } + return result +} diff --git a/langext/os.go b/langext/os.go new file mode 100644 index 0000000..37a0e21 --- /dev/null +++ b/langext/os.go @@ -0,0 +1,11 @@ +package langext + +import "os" + +func FileExists(filename string) bool { + info, err := os.Stat(filename) + if os.IsNotExist(err) { + return false + } + return !info.IsDir() +} diff --git a/langext/rand.go b/langext/rand.go new file mode 100644 index 0000000..f934abe --- /dev/null +++ b/langext/rand.go @@ -0,0 +1,38 @@ +package langext + +import ( + "crypto/rand" + "io" + "math" + "math/big" +) + +func RandBytes(size int) []byte { + b := make([]byte, size) + _, err := io.ReadFull(rand.Reader, b) + if err != nil { + panic(err) + } + return b +} + +func RandBase62(rlen int) string { + ecs := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" + + bi52 := big.NewInt(int64(len(ecs))) + + randMax := big.NewInt(math.MaxInt64) + + r := "" + + for i := 0; i < rlen; i++ { + v, err := rand.Int(rand.Reader, randMax) + if err != nil { + panic(err) + } + + r += string(ecs[v.Mod(v, bi52).Int64()]) + } + + return r +} diff --git a/langext/string.go b/langext/string.go index 34e43aa..53a9417 100644 --- a/langext/string.go +++ b/langext/string.go @@ -61,3 +61,49 @@ func ConvertStringerArray[T fmt.Stringer](inarr []T) []string { } return result } + +func StrRunePadLeft(str string, pad string, padlen int) string { + if pad == "" { + pad = " " + } + + if len([]rune(str)) >= padlen { + return str + } + + return strings.Repeat(pad, padlen-len([]rune(str)))[0:(padlen-len([]rune(str)))] + str +} + +func StrRunePadRight(str string, pad string, padlen int) string { + if pad == "" { + pad = " " + } + + if len([]rune(str)) >= padlen { + return str + } + + return str + strings.Repeat(pad, padlen-len([]rune(str)))[0:(padlen-len([]rune(str)))] +} + +func Indent(str string, pad string) string { + eonl := strings.HasSuffix(str, "\n") + r := "" + for _, v := range strings.Split(str, "\n") { + r += pad + v + "\n" + } + + if eonl { + r = r[0 : len(r)-1] + } + + return r +} + +func NumToStringOpt[V IntConstraint](v *V, fallback string) string { + if v == nil { + return fallback + } else { + return fmt.Sprintf("%d", v) + } +} diff --git a/langext/uuid.go b/langext/uuid.go new file mode 100644 index 0000000..b00914e --- /dev/null +++ b/langext/uuid.go @@ -0,0 +1,134 @@ +package langext + +import ( + "crypto/rand" + "encoding/hex" + "io" + "strings" +) + +func NewUUID() ([16]byte, error) { + var uuid [16]byte + _, err := io.ReadFull(rand.Reader, uuid[:]) + if err != nil { + return [16]byte{}, err + } + uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4 + uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10 + return uuid, nil +} + +func NewHexUUID() (string, error) { + uuid, err := NewUUID() + if err != nil { + return "", err + } + + // Result: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx + + var dst = make([]byte, 36) + + hex.Encode(dst, uuid[:4]) + dst[8] = '-' + hex.Encode(dst[9:13], uuid[4:6]) + dst[13] = '-' + hex.Encode(dst[14:18], uuid[6:8]) + dst[18] = '-' + hex.Encode(dst[19:23], uuid[8:10]) + dst[23] = '-' + hex.Encode(dst[24:], uuid[10:]) + + return string(dst), nil +} + +func NewUpperHexUUID() (string, error) { + uuid, err := NewUUID() + if err != nil { + return "", err + } + + // Result: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX + + var dst = make([]byte, 36) + + hex.Encode(dst, uuid[:4]) + dst[8] = '-' + hex.Encode(dst[9:13], uuid[4:6]) + dst[13] = '-' + hex.Encode(dst[14:18], uuid[6:8]) + dst[18] = '-' + hex.Encode(dst[19:23], uuid[8:10]) + dst[23] = '-' + hex.Encode(dst[24:], uuid[10:]) + + return strings.ToUpper(string(dst)), nil +} + +func NewRawHexUUID() (string, error) { + uuid, err := NewUUID() + if err != nil { + return "", err + } + + // Result: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx + + var dst = make([]byte, 32) + + hex.Encode(dst, uuid[:4]) + hex.Encode(dst[8:12], uuid[4:6]) + hex.Encode(dst[12:16], uuid[6:8]) + hex.Encode(dst[16:20], uuid[8:10]) + hex.Encode(dst[20:], uuid[10:]) + + return strings.ToUpper(string(dst)), nil +} + +func NewBracesUUID() (string, error) { + uuid, err := NewUUID() + if err != nil { + return "", err + } + + // Result: {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} + + var dst = make([]byte, 38) + + dst[0] = '{' + hex.Encode(dst, uuid[:5]) + dst[9] = '-' + hex.Encode(dst[10:14], uuid[4:6]) + dst[14] = '-' + hex.Encode(dst[15:19], uuid[6:8]) + dst[19] = '-' + hex.Encode(dst[20:24], uuid[8:10]) + dst[24] = '-' + hex.Encode(dst[25:], uuid[10:]) + dst[37] = '}' + + return strings.ToUpper(string(dst)), nil +} + +func NewParensUUID() (string, error) { + uuid, err := NewUUID() + if err != nil { + return "", err + } + + // Result: (XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX) + + var dst = make([]byte, 38) + + dst[0] = '(' + hex.Encode(dst, uuid[:5]) + dst[9] = '-' + hex.Encode(dst[10:14], uuid[4:6]) + dst[14] = '-' + hex.Encode(dst[15:19], uuid[6:8]) + dst[19] = '-' + hex.Encode(dst[20:24], uuid[8:10]) + dst[24] = '-' + hex.Encode(dst[25:], uuid[10:]) + dst[37] = ')' + + return strings.ToUpper(string(dst)), nil +} diff --git a/termext/colors.go b/termext/colors.go new file mode 100644 index 0000000..87dc61c --- /dev/null +++ b/termext/colors.go @@ -0,0 +1,45 @@ +package termext + +const ( + colorReset = "\033[0m" + colorRed = "\033[31m" + colorGreen = "\033[32m" + colorYellow = "\033[33m" + colorBlue = "\033[34m" + colorPurple = "\033[35m" + colorCyan = "\033[36m" + colorGray = "\033[37m" + colorWhite = "\033[97m" +) + +func Red(v string) string { + return colorRed + v + colorReset +} + +func Green(v string) string { + return colorGreen + v + colorReset +} + +func Yellow(v string) string { + return colorYellow + v + colorReset +} + +func Blue(v string) string { + return colorBlue + v + colorReset +} + +func Purple(v string) string { + return colorPurple + v + colorReset +} + +func Cyan(v string) string { + return colorCyan + v + colorReset +} + +func Gray(v string) string { + return colorGray + v + colorReset +} + +func White(v string) string { + return colorWhite + v + colorReset +} diff --git a/termext/osutil.go b/termext/osutil.go new file mode 100644 index 0000000..d611aba --- /dev/null +++ b/termext/osutil.go @@ -0,0 +1,5 @@ +package termext + +func enableColor() bool { + return true +} diff --git a/termext/osutil_windows.go b/termext/osutil_windows.go new file mode 100644 index 0000000..7d2fcfb --- /dev/null +++ b/termext/osutil_windows.go @@ -0,0 +1,24 @@ +package termext + +func enableColor() bool { + handle, err := windows.GetStdHandle(windows.STD_OUTPUT_HANDLE) + if err != nil { + return false + } + + var mode uint32 + err = windows.GetConsoleMode(handle, &mode) + if err != nil { + return false + } + + if mode&windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING != windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING { + mode = mode | windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING + err = windows.SetConsoleMode(handle, mode) + if err != nil { + return false + } + } + + return true +} diff --git a/termext/termcolor.go b/termext/termcolor.go new file mode 100644 index 0000000..24a7ba3 --- /dev/null +++ b/termext/termcolor.go @@ -0,0 +1,90 @@ +package termext + +import ( + "golang.org/x/term" + "os" + "regexp" + "strconv" + "strings" +) + +// -> partly copied from [ https://github.com/jwalton/go-supportscolor/tree/master ] + +func SupportsColors() bool { + + if isatty := term.IsTerminal(int(os.Stdout.Fd())); !isatty { + return false + } + + termenv := os.Getenv("TERM") + + if termenv == "dumb" { + return false + } + + if osColorEnabled := enableColor(); !osColorEnabled { + return false + } + + if _, ci := os.LookupEnv("CI"); ci { + var ciEnvNames = []string{"TRAVIS", "CIRCLECI", "APPVEYOR", "GITLAB_CI", "GITHUB_ACTIONS", "BUILDKITE", "DRONE"} + for _, ciEnvName := range ciEnvNames { + _, exists := os.LookupEnv(ciEnvName) + if exists { + return true + } + } + + if os.Getenv("CI_NAME") == "codeship" { + return true + } + + return false + } + + if teamCityVersion, isTeamCity := os.LookupEnv("TEAMCITY_VERSION"); isTeamCity { + versionRegex := regexp.MustCompile(`^(9\.(0*[1-9]\d*)\.|\d{2,}\.)`) + if versionRegex.MatchString(teamCityVersion) { + return true + } + return false + } + + if os.Getenv("COLORTERM") == "truecolor" { + return true + } + + if termProgram, termProgramPreset := os.LookupEnv("TERM_PROGRAM"); termProgramPreset { + switch termProgram { + case "iTerm.app": + termProgramVersion := strings.Split(os.Getenv("TERM_PROGRAM_VERSION"), ".") + version, err := strconv.ParseInt(termProgramVersion[0], 10, 64) + if err == nil && version >= 3 { + return true + } + return true + case "Apple_Terminal": + return true + + default: + // No default + } + } + + var term256Regex = regexp.MustCompile("(?i)-256(color)?$") + if term256Regex.MatchString(termenv) { + return true + } + + var termBasicRegex = regexp.MustCompile("(?i)^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux") + + if termBasicRegex.MatchString(termenv) { + return true + } + + if _, colorTerm := os.LookupEnv("COLORTERM"); colorTerm { + return true + } + + return false +} diff --git a/timeext/duration.go b/timeext/duration.go index 5b8b614..8c2a32b 100644 --- a/timeext/duration.go +++ b/timeext/duration.go @@ -1,6 +1,9 @@ package timeext -import "time" +import ( + "fmt" + "time" +) func FromSeconds(v int) time.Duration { return time.Duration(int64(v) * int64(time.Second)) @@ -53,3 +56,36 @@ func FromMilliseconds(v int) time.Duration { func FromMillisecondsFloat(v float64) time.Duration { return time.Duration(int64(v * float64(time.Millisecond))) } + +func FormatNaturalDurationEnglish(iv time.Duration) string { + if sec := int64(iv.Seconds()); sec < 180 { + if sec == 1 { + return "1 second ago" + } else { + return fmt.Sprintf("%d seconds ago", sec) + } + } + + if min := int64(iv.Minutes()); min < 180 { + return fmt.Sprintf("%d minutes ago", min) + } + + if hours := int64(iv.Hours()); hours < 72 { + return fmt.Sprintf("%d hours ago", hours) + } + + if days := int64(iv.Hours() / 24.0); days < 21 { + return fmt.Sprintf("%d days ago", days) + } + + if weeks := int64(iv.Hours() / 24.0 / 7.0); weeks < 12 { + return fmt.Sprintf("%d weeks ago", weeks) + } + + if months := int64(iv.Hours() / 24.0 / 7.0 / 30); months < 36 { + return fmt.Sprintf("%d months ago", months) + } + + years := int64(iv.Hours() / 24.0 / 7.0 / 365) + return fmt.Sprintf("%d years ago", years) +}