chrly/mojang/provider.go
ErickSkrauch dac3ca9001
[BREAKING]
Introduce universal profile entity
Remove fs-based capes serving
Rework management API
Rework Redis storage schema
Reducing amount of the bus emitter usage
2024-01-30 09:05:04 +01:00

60 lines
1.3 KiB
Go

package mojang
import (
"errors"
"regexp"
"strings"
"github.com/brunomvsouza/singleflight"
)
var InvalidUsername = errors.New("the username passed doesn't meet Mojang's requirements")
// https://help.minecraft.net/hc/en-us/articles/4408950195341#h_01GE5JX1Z0CZ833A7S54Y195KV
var allowedUsernamesRegex = regexp.MustCompile(`(?i)^[0-9a-z_]{3,16}$`)
type UuidsProvider interface {
GetUuid(username string) (*ProfileInfo, error)
}
type TexturesProvider interface {
GetTextures(uuid string) (*ProfileResponse, error)
}
type MojangTexturesProvider struct {
UuidsProvider
TexturesProvider
group singleflight.Group[string, *ProfileResponse]
}
func (p *MojangTexturesProvider) GetForUsername(username string) (*ProfileResponse, error) {
if !allowedUsernamesRegex.MatchString(username) {
return nil, InvalidUsername
}
username = strings.ToLower(username)
result, err, _ := p.group.Do(username, func() (*ProfileResponse, error) {
profile, err := p.UuidsProvider.GetUuid(username)
if err != nil {
return nil, err
}
if profile == nil {
return nil, nil
}
return p.TexturesProvider.GetTextures(profile.Id)
})
return result, err
}
type NilProvider struct {
}
func (*NilProvider) GetForUsername(username string) (*ProfileResponse, error) {
return nil, nil
}