internal/config/config.go (view raw)
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import (
"log/slog"
"maps"
"net/url"
"os"
"time"
"github.com/pelletier/go-toml/v2"
"github.com/pkg/errors"
)
var Version string
type URL struct {
*url.URL
}
func (u *URL) MarshalText() ([]byte, error) {
return []byte(u.URL.String()), nil
}
func (u *URL) UnmarshalText(text []byte) (err error) {
u.URL, err = url.Parse(string(text))
if err != nil {
return errors.WithMessagef(err, "could not parse URL %s", string(text))
}
return nil
}
type Duration struct {
time.Duration
}
func (d *Duration) MarshalText() ([]byte, error) {
return []byte(d.Duration.String()), nil
}
func (d *Duration) UnmarshalText(text []byte) (err error) {
d.Duration, err = time.ParseDuration(string(text))
if err != nil {
return errors.WithMessagef(err, "could not parse duration %s", string(text))
}
return nil
}
func mustURL(in string) (u URL) {
var err error
u.URL, err = url.Parse(in)
if err != nil {
panic(errors.Errorf("URL cannot be parsed: %s", in))
}
return u
}
// this type is necessary as nix's `fromTOML` doesn't support TOML date/time formats
type LocalTime struct {
toml.LocalTime
}
func (t *LocalTime) MarshalText() ([]byte, error) {
b, err := t.LocalTime.MarshalText()
if err != nil {
return nil, errors.WithMessage(err, "could not marshal time value")
}
return b, nil
}
func (t *LocalTime) UnmarshalText(in []byte) (err error) {
err = t.LocalTime.UnmarshalText(in)
if err != nil {
return errors.WithMessage(err, "could not parse time value")
}
return nil
}
func mustLocalTime(in string) (time LocalTime) {
err := time.UnmarshalText([]byte(in))
if err != nil {
panic(errors.Errorf("Could not parse time: %s", in))
}
return
}
func GetConfig(filename string) (*Config, error) {
config := defaultConfig
if filename != "" {
slog.Debug("reading config", "filename", filename)
f, err := os.Open(filename)
if err != nil {
return nil, errors.Wrap(err, "reading config failed")
}
defer f.Close()
dec := toml.NewDecoder(f)
dec.DisallowUnknownFields()
err = dec.Decode(&config)
if err != nil {
var tomlError *toml.DecodeError
if errors.As(err, &tomlError) {
return nil, errors.WithMessage(err, tomlError.Error())
}
var missingConfigError *toml.StrictMissingError
if errors.As(err, &missingConfigError) {
return nil, errors.Errorf("unexpected config: %s", missingConfigError.String())
}
return nil, errors.Wrap(err, "config error")
}
}
maps.DeleteFunc(config.Importer.Sources, func(_ string, v *Source) bool {
return !v.Enable
})
return &config, nil
}
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