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package internal
import (
"encoding/json"
"errors"
"fmt"
"os"
"regexp"
)
type Passport struct {
SubjectID string `json:"subject_id"`
CertificateID string `json:"certificate_id"`
Issuer string `json:"issuer"`
PrivateKey string `json:"private_key"`
PublicKey string `json:"public_key"`
}
func LoadPassportFile(location string) (*Passport, error) {
file, err := os.Open(location)
if err != nil {
return nil, fmt.Errorf("failed to open passport file: %w", err)
}
defer func() { _ = file.Close() }()
var passport Passport
err = json.NewDecoder(file).Decode(&passport)
if err != nil {
return nil, fmt.Errorf("failed to parse passport file: %w", err)
}
err = passport.validate()
if err != nil {
return nil, fmt.Errorf("passport file validation failed: %w", err)
}
return &passport, nil
}
func (passport *Passport) validate() error {
if passport.Issuer == "" {
return errors.New("issuer is empty")
}
if passport.CertificateID == "" {
return errors.New("certificate ID is empty")
}
if passport.PrivateKey == "" {
return errors.New("private key is missing")
}
if passport.SubjectID == "" {
return errors.New("subject is empty")
}
return nil
}
func (passport *Passport) ExtractProjectID() (string, error) {
re := regexp.MustCompile("iam/project/([a-zA-Z0-9]+)")
parts := re.FindStringSubmatch(passport.SubjectID)
if len(parts) != 2 {
return "", fmt.Errorf("failed to extract project ID from subject ID: %s", passport.SubjectID)
}
return parts[1], nil
}
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