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options.go
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options.go
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package instagram
import (
"fmt"
"github.com/spf13/pflag"
)
type Options struct {
Limit int
Order string
Output string
SortBy string
}
func NewOptions(flags *pflag.FlagSet) (*Options, error) {
limit, err := flags.GetInt(FlagLimit)
if err != nil {
return nil, err
}
order, err := flags.GetString(FlagOrder)
if err != nil {
return nil, err
}
output, err := flags.GetString(FlagOutput)
if err != nil {
return nil, err
}
sortBy, err := flags.GetString(FlagSortBy)
if err != nil {
return nil, err
}
return &Options{
Limit: limit,
Order: order,
Output: output,
SortBy: sortBy,
}, nil
}
func NewEmptyOptions() *Options {
return &Options{
Output: OutputNone,
}
}
func (o *Options) Validate() error {
if err := validateLimit(o.Limit); err != nil {
return err
}
if err := validateOrder(o.Order); err != nil {
return err
}
if err := validateOutput(o.Output); err != nil {
return err
}
if err := validateSortBy(o.SortBy); err != nil {
return err
}
return nil
}
func validateLimit(value int) error {
if value < 0 {
return fmt.Errorf("invalid limit: %d", value)
}
return nil
}
func validateOrder(value string) error {
switch value {
case OrderAsc, OrderDesc:
return nil
default:
return fmt.Errorf("invalid order direction: %s", value)
}
}
func validateOutput(value string) error {
switch value {
case OutputNone, OutputJson, OutputTable, OutputYaml:
return nil
default:
return fmt.Errorf("invalid output format: %s", value)
}
}
func validateSortBy(value string) error {
switch value {
case FieldTimestamp, FieldUsername:
return nil
default:
return fmt.Errorf("invalid sort by field: %s", value)
}
}