Fix the retarded duration parsing

esi/sso.go

@@ -11,7 +11,6 @@ import (
 	"io"
 	"net/http"
 	"net/url"
-	"os"
 	"strconv"
 	"strings"
 	"sync"
@@ -280,16 +279,6 @@ func (s *SSO) processCallback(isGet bool, code, state string, writeResponse func
 	}{code, state, nil}
 }
 
-// parseTokenExpiryBufferSeconds parses the token expiry buffer from Go duration format to seconds
-func parseTokenExpiryBufferSeconds() int {
-	duration, err := time.ParseDuration(options.GlobalOptions.TokenExpiryBuffer)
-	if err != nil {
-		logger.Error("Invalid token expiry buffer duration %s: %v", options.GlobalOptions.TokenExpiryBuffer, err)
-		os.Exit(1)
-	}
-	return int(duration.Seconds())
-}
-
 func (s *SSO) waitForCallback() (code, state string, err error) {
 	// Parse SSO callback timeout ONCE at initialization
 	callbackTimeout, err := time.ParseDuration(options.GlobalOptions.SSOCallbackTimeout)
@@ -349,11 +338,19 @@ func (s *SSO) exchangeCodeForToken(ctx context.Context, code, verifier string) (
 	name, _ := parseTokenCharacter(tr.AccessToken)
 	logger.Info("Successfully exchanged code for token, character: %s", name)
 
+	expiryBuffer, err := time.ParseDuration(options.GlobalOptions.TokenExpiryBuffer)
+	if err != nil {
+		return nil, fmt.Errorf("invalid token expiry buffer duration %s: %w", options.GlobalOptions.TokenExpiryBuffer, err)
+	}
+
+	expiresIn := time.Duration(tr.ExpiresIn) * time.Second
+	expiresAt := time.Now().Add(expiresIn).Add(-expiryBuffer)
+
 	return &types.Character{
 		CharacterName: name,
 		AccessToken:   tr.AccessToken,
 		RefreshToken:  tr.RefreshToken,
-		ExpiresAt:     time.Now().Add(time.Duration(tr.ExpiresIn-parseTokenExpiryBufferSeconds()) * time.Second),
+		ExpiresAt:     expiresAt,
 	}, nil
 }
 
@@ -394,7 +391,13 @@ func (s *SSO) refreshToken(ctx context.Context, char *types.Character) error {
 		char.RefreshToken = tr.RefreshToken
 	}
 	if tr.ExpiresIn > 0 {
-		char.ExpiresAt = time.Now().Add(time.Duration(tr.ExpiresIn-parseTokenExpiryBufferSeconds()) * time.Second)
+		expiryBuffer, err := time.ParseDuration(options.GlobalOptions.TokenExpiryBuffer)
+		if err != nil {
+			return fmt.Errorf("invalid token expiry buffer duration %s: %w", options.GlobalOptions.TokenExpiryBuffer, err)
+		}
+
+		expiresIn := time.Duration(tr.ExpiresIn) * time.Second
+		char.ExpiresAt = time.Now().Add(expiresIn).Add(-expiryBuffer)
 	}
 
 	logger.Debug("Saving refreshed token to database for character %s", char.CharacterName)