/
query_decoder.go
79 lines (63 loc) · 1.47 KB
/
query_decoder.go
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package uri
import (
"net/url"
"github.com/go-faster/errors"
)
type QueryDecoder struct {
values url.Values
}
func NewQueryDecoder(values url.Values) *QueryDecoder {
return &QueryDecoder{
values: values,
}
}
type QueryParameterDecodingConfig struct {
Name string
Style QueryStyle
Explode bool
Fields []QueryParameterObjectField // Only for object param.
}
type QueryParameterObjectField struct {
Name string
Required bool
}
func (d *QueryDecoder) HasParam(cfg QueryParameterDecodingConfig) error {
if len(cfg.Fields) > 0 {
var (
case1 = cfg.Style == QueryStyleForm && cfg.Explode
case2 = cfg.Style == QueryStyleDeepObject && cfg.Explode
)
if case1 || case2 {
found := false
for _, field := range cfg.Fields {
qparam := field.Name
if case2 {
qparam = cfg.Name + "[" + field.Name + "]"
}
_, ok := d.values[qparam]
if !ok && field.Required {
return errors.Errorf("parameter %q not set", qparam)
}
found = true
}
if !found {
return errors.Errorf("none of parameters (%+v) are set", cfg.Fields)
}
return nil
}
}
if _, ok := d.values[cfg.Name]; !ok {
return errors.Errorf("parameter %q not set", cfg.Name)
}
return nil
}
func (d *QueryDecoder) DecodeParam(cfg QueryParameterDecodingConfig, f func(Decoder) error) error {
p := &queryParamDecoder{
values: d.values,
objectFields: cfg.Fields,
paramName: cfg.Name,
style: cfg.Style,
explode: cfg.Explode,
}
return f(p)
}