Initial zhanlu OpenAI proxy

internal/auth/credentials.go

@@ -0,0 +1,58 @@
+package auth
+
+import (
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+type Credentials struct {
+	AccessKey string    `json:"access_key"`
+	SecretKey string    `json:"secret_key"`
+	Token     string    `json:"token"`
+	BaseURL   string    `json:"base_url,omitempty"`
+	SavedAt   time.Time `json:"saved_at"`
+}
+
+func (c Credentials) Validate() error {
+	if strings.TrimSpace(c.AccessKey) == "" {
+		return errors.New("access_key is required")
+	}
+	if strings.TrimSpace(c.SecretKey) == "" {
+		return errors.New("secret_key is required")
+	}
+	if strings.TrimSpace(c.Token) == "" {
+		return errors.New("token is required")
+	}
+	return nil
+}
+
+func LoadCredentials(path string) (Credentials, error) {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return Credentials{}, err
+	}
+	var c Credentials
+	if err := json.Unmarshal(b, &c); err != nil {
+		return Credentials{}, err
+	}
+	return c, c.Validate()
+}
+
+func SaveCredentials(path string, c Credentials) error {
+	if err := c.Validate(); err != nil {
+		return err
+	}
+	c.SavedAt = time.Now()
+	b, err := json.MarshalIndent(c, "", "  ")
+	if err != nil {
+		return err
+	}
+	if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil {
+		return err
+	}
+	return os.WriteFile(path, b, 0o600)
+}