more refactors :)

internal/db/discordtokens.go

@@ -80,7 +80,7 @@ func (u *User) GetDiscordToken(ctx context.Context, tx bun.Tx) (*DiscordToken, e
 		Limit(1).
 		Scan(ctx)
 	if err != nil {
-		if err == sql.ErrNoRows {
+		if errors.Is(err, sql.ErrNoRows) {
 			return nil, nil
 		}
 		return nil, errors.Wrap(err, "tx.NewSelect")
@@ -90,10 +90,12 @@ func (u *User) GetDiscordToken(ctx context.Context, tx bun.Tx) (*DiscordToken, e
 
 // Convert reverts the token back into a *discord.Token
 func (t *DiscordToken) Convert() *discord.Token {
+	expiresIn := t.ExpiresAt - time.Now().Unix()
+	expiresIn = max(expiresIn, 0)
 	token := &discord.Token{
 		AccessToken:  t.AccessToken,
 		RefreshToken: t.RefreshToken,
-		ExpiresIn:    int(t.ExpiresAt - time.Now().Unix()),
+		ExpiresIn:    int(expiresIn),
 		Scope:        t.Scope,
 		TokenType:    t.TokenType,
 	}