firehol/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

package confopt

import (
    "encoding/json"
    "fmt"
    "strconv"
    "time"
)

type Duration time.Duration

func (d Duration) Duration() time.Duration {
    return time.Duration(d)
}

func (d Duration) String() string {
    return d.Duration().String()
}

func (d *Duration) UnmarshalYAML(unmarshal func(any) error) error {
    var s string

    if err := unmarshal(&s); err != nil {
        return err
    }

    if v, err := time.ParseDuration(s); err == nil {
        *d = Duration(v)
        return nil
    }
    if v, err := strconv.ParseInt(s, 10, 64); err == nil {
        *d = Duration(time.Duration(v) * time.Second)
        return nil
    }
    if v, err := strconv.ParseFloat(s, 64); err == nil {
        *d = Duration(v * float64(time.Second))
        return nil
    }

    return fmt.Errorf("unparsable duration format '%s'", s)
}

func (d Duration) MarshalYAML() (any, error) {
    seconds := float64(d) / float64(time.Second)
    return seconds, nil
}

func (d *Duration) UnmarshalJSON(b []byte) error {
    s := string(b)

    if v, err := time.ParseDuration(s); err == nil {
        *d = Duration(v)
        return nil
    }
    if v, err := strconv.ParseInt(s, 10, 64); err == nil {
        *d = Duration(time.Duration(v) * time.Second)
        return nil
    }
    if v, err := strconv.ParseFloat(s, 64); err == nil {
        *d = Duration(v * float64(time.Second))
        return nil
    }

    return fmt.Errorf("unparsable duration format '%s'", s)
}

func (d Duration) MarshalJSON() ([]byte, error) {
    seconds := float64(d) / float64(time.Second)
    return json.Marshal(seconds)
}